JP2019144381A - Semi-finished lens, method for manufacturing the same, and method for manufacturing lens - Google Patents

Abstract

To provide a semi-finished lens having a structure hardly causing a defect during post-processing.SOLUTION: A semi-finished lens 1A that is subjected to post-processing and becomes a lens of an eyewear, is configured to comprise: a transparent first substrate 10; and a film element 12 having an optical characteristics changing section that is fixed on a principal surface of the first substrate 10 and whose optical characteristics change by electric control, a cut section that is cut in post processing, and an electrode section that is provided on the cut section and is connected to the optical characteristics changing section.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a semi-finished lens, a method for manufacturing a semi-finished lens, and a method for manufacturing a lens.

  2. Description of the Related Art Conventionally, there is known a lens having an optical characteristic changing portion that changes optical characteristics such as light transmittance or refractive index by applying a voltage (see Patent Document 1). Such a lens is manufactured by subjecting a semi-finished lens to post-processing such as cutting, polishing, and coating.

Japanese Patent Laid-Open No. 07-209677

  From the viewpoint of cost reduction, a semi-finished lens having a structure in which defects are unlikely to occur during post-processing is desired.

  An object of the present invention is to provide a semi-finished lens, a method of manufacturing a semi-finished lens, and a method of manufacturing a lens with less occurrence of problems due to post-processing.

  A semi-finished lens according to the present invention is a semi-finished lens that is subjected to post-processing to become an eyewear lens, and is fixed to a transparent first substrate, a main surface of the first substrate, and electrically Is provided in the optical characteristic changing part having a liquid crystal layer whose light transmittance changes due to the change of the alignment state based on the mechanical control, the cut part to be cut by post-processing, and the cut part, and connected to the optical characteristic changing part And a film element having an electrode portion.

  When implementing the semi-finished lens according to the present invention as described above, it is preferable that the part to be cut protrudes in a direction along the main surface from a part adjacent to the part to be cut.

  When the semi-finished lens according to the present invention as described above is implemented, the semi-finished lens preferably further includes a first adhesive layer disposed between the first substrate and the film element.

  When the semi-finished lens according to the present invention as described above is implemented, it is preferable that the semi-finished lens further includes a second substrate disposed to face the main surface.

  When implementing the semi-finished lens according to the present invention as described above, the semi-finished lens includes a spacer member disposed between the first substrate and the second substrate, and the first substrate and the second substrate. It is preferable to further include a second adhesive layer disposed between the two.

  When the semi-finished lens according to the present invention as described above is implemented, the distance between the surface of the second substrate and the surface of the optical property changing portion is preferably 0.5 mm or more and 14.0 mm or less.

  When the semi-finished lens according to the present invention as described above is carried out, it is preferable that the semi-finished lens further includes a coating layer that is provided to face the main surface and covers the main surface and the film element.

  When implementing the semi-finished lens according to the present invention as described above, it is preferable that the light transmittance changes based on the change in the light absorption rate in the liquid crystal layer.

  When the semi-finished lens according to the present invention as described above is implemented, it is preferable that the light transmittance changes based on the change in the light scattering rate in the liquid crystal layer.

  A method for manufacturing a semi-finished lens according to the present invention is the above-described method for manufacturing a semi-finished lens, comprising: providing an adhesive layer on at least one of the first substrate and the film element; Adhering the film element to the surface via an adhesive layer.

  When carrying out the method for manufacturing a semi-finished lens according to the present invention as described above, the manufacturing method includes the steps of disposing a transparent second substrate facing the main surface, and the first substrate and the second substrate. Fixing a fixing member to the outer peripheral surface of the first substrate and the outer peripheral surface of the second substrate so as to surround the space between the first substrate and the step of injecting and curing a transparent curable composition into the space And further preferably.

  When implementing the manufacturing method of the semi-finished lens which concerns on this invention as mentioned above, the said manufacturing method is a step which forms a coating layer in the main surface and the surface of a film element after the step which provides a 1st contact bonding layer. It is preferable to further include.

  A method of manufacturing a lens according to the present invention is a method of manufacturing a lens for processing an eyewear lens by processing the semi-finished lens described above, and a step of subjecting the semi-finished lens to back processing, Cutting and exposing the electrode part to the outside.

  When carrying out the method for manufacturing a lens according to the present invention as described above, the manufacturing method includes a step of forming a hard coat film on at least one of the front surface and the back surface of the lens. It is preferable to provide further.

  Moreover, when implementing the manufacturing method of the lens concerning the present invention as mentioned above, the said manufacturing method forms an antireflection film in at least one surface of the surface used as the front side of a lens, and the surface used as a back side. Preferably further steps are provided.

  ADVANTAGE OF THE INVENTION According to this invention, the semifinished lens of the structure which cannot produce a malfunction easily at the time of post-processing, the manufacturing method of a semifinished lens, and the manufacturing method of a lens can be provided.

FIG. 1 is a perspective view showing an example of the configuration of the electronic glasses. FIG. 2 is a block diagram for explaining an internal circuit of the electronic glasses. FIG. 3 is a plan view of the lens. FIG. 4 is a plan view of the semi-finished lens according to the first embodiment. FIG. 5 is a cross-sectional view of the semi-finished lens taken along line AA in FIG. FIG. 6 is a schematic diagram for explaining the structure of the first adhesive layer. FIG. 7 is a cross-sectional view of only the film element taken along line AA in FIG. 8 is a cross-sectional view taken along line BB in FIG. FIG. 9A is a cross-sectional view for explaining a first step in the method of manufacturing a semifinished lens. FIG. 9B is a cross-sectional view for explaining a second step in the method of manufacturing a semifinished lens. FIG. 9C is a cross-sectional view for explaining a third step in the method of manufacturing a semifinished lens. FIG. 9D is a cross-sectional view for explaining a fourth step in the method of manufacturing a semifinished lens. FIG. 9E is a cross-sectional view for explaining a fifth step in the method of manufacturing a semifinished lens. FIG. 9F is a cross-sectional view for explaining a sixth step in the method of manufacturing a semifinished lens. FIG. 10A is a cross-sectional view for explaining a process of manufacturing a round lens from a semi-finished lens. FIG. 10B is a cross-sectional view of a round lens. FIG. 10C is a cross-sectional view for explaining a process of coating the round lens. FIG. 10D is a cross-sectional view for explaining a process of manufacturing a lens lens from a round lens. FIG. 10E is a cross-sectional view of the target lens. FIG. 11 is a cross-sectional view showing a semi-finished lens according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Embodiment 1]
FIG. 1 is a perspective view showing an example of the configuration of the electronic glasses A. FIG. 2 is a block diagram for explaining an internal circuit of the electronic glasses A. The electronic glasses A include a pair of lenses 1, a frame 2, a control unit 3, a switch 4, and a pair of power supplies 5.

  The frame 2 has a front 21 and a pair of temples 22. Hereinafter, the portion where the front 21 is disposed is referred to as the front (front) of the electronic glasses A.

  FIG. 3 shows the lens 1 arranged on the left side when the electronic glasses A are viewed from the front. The pair of lenses 1 are formed so as to be symmetric when the electronic glasses A are viewed from the front, and have the same components. Therefore, the lens 1 shown in FIG. 3 will be described below.

  The lens 1 has an optical property changing unit 120 (a portion to which an oblique lattice is added in FIGS. 1 and 3) whose optical property (light transmittance) can be changed by voltage. The lens 1 may be a spherical lens or an aspheric lens. The shape of the lens 1 can be appropriately adjusted according to the shape of the frame 2 and the like.

  The shape, size, and position of the optical property changing unit 120 can be appropriately adjusted according to the size of the lens 1, the application of the lens 1, and the like. Examples of the use of the lens 1 include sunglasses for protecting the eyes from sunlight and strong illumination. When the lens 1 is used for sunglasses, the optical characteristic changing unit 120 has an outer shape slightly smaller than the outer shape of the lens 1. In addition, the external shape of the lens 1 and the optical characteristic part 120 means the shape of the outer periphery of the lens 1 and the optical characteristic part 120 shown in FIG. A specific configuration of the optical characteristic changing unit 120 will be described later.

  The user (wearer) of the electronic glasses A switches the optical characteristic (for example, transmittance) of the optical characteristic changing unit 120 by operating (for example, touch operation) the switch 4 provided on the frame 2.

  When the switch 4 is operated by the user, the controller 3 applies a voltage to the optical characteristic changing unit 120 (hereinafter referred to as “application state”) and a state in which no voltage is applied (hereinafter referred to as “applied state”). Hereinafter, it is referred to as “non-application state”. The user can adjust the voltage by operating the switch 4. The user can change the optical characteristic (for example, transmittance) of the optical characteristic changing unit 120 gradually (continuously) or stepwise by adjusting the voltage.

  The lens 1 is manufactured by post-processing the semi-finished lens 1A shown in FIG. Note that the semi-finished lens 1A shown in FIG. 4 is processed into the lens 1 shown in FIG. 3 by post-processing.

[About semi-finished lenses]
Hereinafter, the structure of the semi-finished lens 1A will be described with reference to FIGS. The semi-finished lens 1 </ b> A includes a transparent first substrate 10 and a film element 12 fixed to a surface 101 (also referred to as a main surface) of the first substrate 10. The film element 12 is provided in the optical property changing portion 120 whose optical properties change by electrical control, the cut portion 121 to be cut by post-processing, and the cut portion 121, and connected to the optical property changing portion 120. An outer first electrode 121a and an outer second electrode 121b.

[Configuration of semi-finished lens]
Hereinafter, each configuration of the semi-finished lens 1A will be described with reference to FIGS.

  In describing each configuration of the semi-finished lens 1A, an orthogonal coordinate system (X, Y, Z) is used for convenience of description. The orthogonal coordinate system (X, Y, Z) shown in each figure is a common orthogonal coordinate system.

  The X direction coincides with the left and right direction of the user when the user wears the eyewear (hereinafter simply referred to as “wearing state”). The Y direction coincides with the vertical direction of the user in the mounted state. The Z direction coincides with the front-rear direction of the user in the mounted state.

  Further, in the following description, the “thickness direction” refers to the thickness direction of the semi-finished lens 1A and the lens 1 without particular notice. The thickness direction coincides with the Z direction of the orthogonal coordinate system described above. Further, in the case of “plan view” without particular notice, the semi-finished lens 1A and the lens 1 are viewed from the point that they exist in the normal direction of the semi-finished lens 1A and the front surface of the lens 1. It means a plan view.

  Further, the “surface” of each member is a surface on the side far from the user (Z direction + side) in the mounted state. On the other hand, the “back surface” of each member is a surface on the side close to the user (Z direction-side) in the mounted state.

  The semi-finished lens 1A of the present embodiment is processed into the lens 1 as shown in FIG. 3 by removing the removal portion 1a (the portion surrounded by the two-dot chain line in FIG. 5) by post-processing. The

  Such a semi-finished lens 1 </ b> A includes a first substrate 10, a first adhesive layer 11, a film element 12, a spacer member 13, a second substrate 14, a second adhesive layer 15, and a fixing member 16.

[About the first substrate]
The structure of the first substrate 10 (also referred to as a first substrate) will be described with reference to FIGS. The first substrate 10 is an optical element made of a transparent plate member having a pair of main surfaces (a front surface 101 and a back surface 102). Specifically, the first substrate 10 has a disk shape that curves convexly toward the Z direction + side (upper side in FIG. 5). The surface 101 of the first substrate 10 is a convex curved surface that curves in a convex shape toward the Z direction + side. The back surface 102 of the first substrate 10 is a concave curved surface that curves concavely toward the Z direction + side. The curvature and shape of the first substrate 10 can be appropriately adjusted according to the desired optical power.

  The surface 101 is finished to an optical surface by finishing. On the other hand, the back surface 102 is an unfinished surface that has not been finished. Such a back surface 102 is finished into an optical surface by post-processing.

  In the present embodiment, the surface 101 is a spherical surface having a single curvature (that is, a double curved surface). On the other hand, the back surface 102 is also a spherical surface having a single curvature (that is, a double curved surface). The curvature of the front surface 101 and the curvature of the back surface 102 are different. Specifically, in the present embodiment, the curvature of the front surface 101 is larger than the curvature of the back surface 102. Therefore, the distance between the front surface 101 and the back surface 102 is partially different. The front surface 101 and the back surface 102 are not limited to double curved surfaces (for example, spherical surfaces), but may be single curved surfaces (for example, partial cylindrical surfaces). The double curved surface means, for example, a curved surface obtained by synthesizing a curved surface that curves around the first axis and a curved surface that curves around the second axis orthogonal to the first axis. On the other hand, a single curved surface means a curved surface that is curved around only the first axis.

  Further, the curvature of the front surface 101 and the curvature of the back surface 102 may be equal. Further, at least one of the front surface 101 and the back surface 102 may be a complex curved surface having a plurality of curvatures. Further, at least one of the front surface 101 and the back surface 102 may be a flat surface.

  The first substrate 10 is made of inorganic glass or organic glass. The first substrate 10 is preferably made from organic glass. The organic glass is a thermosetting material made of thermosetting polyurethanes, polythiourethanes, polyepoxides, or polyepisulfides, or a thermoplastic material made of poly (meth) acrylates, or a copolymer thereof or Any of thermosetting (cross-linked) materials consisting of a mixture. The organic glass may be a thermoplastic material including, for example, polycarbonates or thermoplastic polyurethanes. Alternatively, the organic glass may be a diethylene glycol bisallyl carbonate polymer or copolymer.

  The first substrate 10 is preferably a normal lens that is not made based on a doctor's prescription, such as sunglasses or reading glasses with power, or an incomplete lens of the normal lens. Alternatively, the first substrate 10 is preferably an ophthalmic (medical) lens manufactured based on a doctor's prescription or an incomplete lens of the ophthalmic lens.

[About the first adhesive layer]
The first adhesive layer 11 (also referred to as an adhesive layer) will be described with reference to FIGS. The first adhesive layer 11 is disposed between the front surface 101 of the first substrate 10 and the back surface of the film element 12, and fixes the film element 12 and the first substrate 10. Such a 1st contact bonding layer 11 is a sheet-like member of the same shape as the film element 12 mentioned later by planar view. In a state of being fixed to the first substrate 10, the first adhesive layer 11 is curved in a convex shape toward the Z direction + side.

  In the state of being fixed to the first substrate 10, the thickness dimension of the first adhesive layer 11 is, for example, 10 μm or more and 300 μm or less, preferably 15 μm or more and 50 μm or less.

  The first adhesive layer 11 is made of a film-like adhesive made of, for example, an optical pressure-sensitive adhesive, a thermosetting adhesive, or an ultraviolet curable adhesive. An example of the thermosetting adhesive is an adhesive containing polyacrylate. Specific examples include LUCIACS (registered trademark) CS986 series manufactured by Nitto Denko Corporation.

  FIG. 6 shows an adhesive layer 11 </ b> X with a protective film having the first adhesive layer 11 in a state before being fixed to the first substrate 10. The protective film-attached adhesive layer 11 </ b> X includes a first adhesive layer 11, a front-side protective film 110 that covers the surface of the first adhesive layer 11, and a back-side protective film 111 that covers the back surface of the first adhesive layer 11.

  The adhesive layer 11X with a protective film is wound, for example, in a roll shape. The operator uses the protective layer-attached adhesive layer 11X by cutting it slightly larger than the film element 12.

[About film elements]
The structure of the film element 12 will be described with reference to FIGS. 4, 5, 7, and 8. The film element 12 is a film-like optical element, and includes an optical property changing part 120 and a part to be cut 121. Such a film element 12 is fixed to the surface 101 of the first substrate 10 via the first adhesive layer 11. In a state of being fixed to the first substrate 10, the film element 12 is curved in a convex shape toward the Z direction + side so as to follow the surface 101. The thickness dimension of the film element 12 is, for example, 50 μm or more and 500 μm or less.

[About the optical property changing section]
FIG. 7 is a cross-sectional view of the optical property changing section 120 in the film element 12. The optical characteristic changing unit 120 is a film-like optical element whose optical characteristics change by electrical control. Such an optical characteristic changing unit 120 includes a first film member 120a, a second film member 120b, an inner first electrode 120c, an inner second electrode 120d, a liquid crystal layer 120e, and an adhesive layer 120f.

  The first film member 120 a is disposed on the most negative side in the Z direction in the film element 12. On the other hand, the second film member 120 b is arranged on the most positive side in the Z direction in the film element 12.

  The inner first electrode 120c and the inner second electrode 120d are a pair of transparent electrodes having translucency. The inner first electrode 120c is disposed on the Z direction + side of the first film member 120a. On the other hand, the inner second electrode 120d is arranged on the Z direction-side of the second film member 120b. The inner first electrode 120c and the inner second electrode 120d are arranged over a range in which a voltage can be applied to the inner second electrode 120d.

  The material of the inner first electrode 120c and the inner second electrode 120d is not particularly limited as long as it has the desired translucency and conductivity. Examples of the material of the inner first electrode 120c and the inner second electrode 120d include indium tin oxide (ITO) or zinc oxide (ZnO). The materials of the inner first electrode 120c and the inner second electrode 120d may be the same as or different from each other.

  The liquid crystal layer 120e is disposed between the inner first electrode 120c and the inner second electrode 120d. Such a liquid crystal layer 120e contains a liquid crystal material. The alignment state of the liquid crystal material changes depending on whether voltage is applied. When the alignment state of the liquid crystal layer 120e changes, the optical characteristics of the liquid crystal layer 120e change. For example, the liquid crystal material can be composed of cholesteric liquid crystal, nematic liquid crystal, or the like.

  The optical characteristic that changes in the liquid crystal layer 120e is, for example, light transmittance. The liquid crystal layer 120e may have a configuration in which light transmittance changes based on a change in light absorption rate in the liquid crystal layer 120e. Alternatively, the liquid crystal layer may have a configuration in which light transmittance changes based on a change in light scattering rate in the liquid crystal layer 120e.

  As an example of the liquid crystal layer 120e that realizes light transmittance in the liquid crystal layer 120e by changing the light absorption rate, for example, a guest-host liquid crystal layer containing a dichroic dye and a host liquid crystal can be given.

  Such a guest-host liquid crystal layer can be switched between a transparent coloring state and a transparent state in accordance with application of a voltage. The dichroic dye is a compound that dissolves in a host liquid crystal described later and has a function of absorbing light.

  The host liquid crystal is a compound having a function of controlling the alignment state of the above-described dichroic dye dissolved as a guest by changing the alignment state according to application of voltage. The host liquid crystal employed in the present embodiment is not particularly limited as long as it can coexist with the dichroic dye.

  In addition, a compound that does not exhibit liquid crystallinity is added to the guest-host liquid crystal layer for the purpose of changing the physical properties of the host liquid crystal to a desired range (for example, setting the temperature range of the liquid crystal phase to a desired range). Also good. As such a guest-host liquid crystal, a known structure can be adopted as appropriate.

  In addition, examples of the liquid crystal layer 120e that realizes light transmittance in the liquid crystal layer 120e by changing the light scattering rate include polymer dispersed liquid crystal (PDLC) and polymer network liquid crystal (PNLC).

  The liquid crystal layer of the polymer dispersed liquid crystal (PDLC) and the liquid crystal layer of the polymer network liquid crystal (PNLC) can be switched between a scattering state and a transparent state in accordance with application of voltage.

  The polymer dispersed liquid crystal (PDLC) contains, for example, a liquid crystal material and an epoxy resin. On the other hand, polymer network liquid crystal (PNLC) contains, for example, a liquid crystal material and diacrylate. As such a liquid crystal layer of polymer dispersed liquid crystal (PDLC) and a liquid crystal layer of polymer network liquid crystal (PNLC), known structures can be appropriately employed.

  The light transmittance of the liquid crystal layer 120e in the applied state is smaller than the light transmittance of the liquid crystal layer 120e in the non-applied state.

  The optical property changing unit 120 may further include another optical element having translucency as necessary. Examples of other optical elements include an insulating layer and an alignment film.

  The insulating layer prevents conduction between the first film member 120a and the second film member 120b. For example, the insulating layers are disposed between the first film member 120a and the liquid crystal layer 120e and between the liquid crystal layer 120e and the second film member 120b, respectively. Examples of the material for the insulating layer include known materials that can be used as the light-transmitting insulating layer. The material of the insulating layer is, for example, silicon dioxide.

  The alignment film controls the alignment state of the liquid crystal material in the liquid crystal layer 120e. For example, the alignment film includes a first alignment film (not shown) disposed between the inner first electrode 120c and the liquid crystal layer 120e, and a first alignment film disposed between the liquid crystal layer 120e and the inner second electrode 120d. It has a bi-alignment film (not shown). Examples of the material of the alignment film include known materials that can be used as the alignment film of the liquid crystal material. The material of the alignment film is, for example, polyimide.

  The adhesive layer 120f fixes the outer peripheral edge of the first film member 120a and the second film member 120b over the entire circumference. In addition, although not shown, a spacer is provided between the first film member 120a and the second film member 120b to keep the distance between the first film member 120a and the second film member 120b constant. Specifically, such a spacer is provided in the liquid crystal layer 120e.

  The optical characteristic changing section 120 as described above is attached while being deformed along the surface 101 when being attached to the surface 101 of the first substrate 10 in the method of manufacturing a semi-finished lens described later. Even when deformed in this way, the distance between the first film member 120a and the second film member 120b in the optical property changing section 120 is kept constant by the above-described spacer. For this reason, the optical characteristic change part 120 can function stably over the whole.

[To be cut]
FIG. 8 is an example of a cross-sectional view of the cut portion 121 in the film element 12. The to-be-cut part 121 is provided in a part of outer periphery of the optical characteristic changing part 120, and is cut in post-processing.

  Such a part to be cut 121 includes a first film member 120a, a second film member 120b, an outer first electrode 121a, an outer second electrode 121b, and an adhesive layer 120f. The first film member 120a, the second film member 120b, and the adhesive layer 120f are members common to the optical property changing unit 120, respectively.

  The outer first electrode 121a is disposed between the first film member 120a and the second film member 120b. Such an outer first electrode 121 a is connected to the inner first electrode 120 c of the optical property changing unit 120. That is, the outer first electrode 121a is not connected to the inner second electrode 120d. The structure for connecting the outer first electrode 121a and the inner first electrode 120c is not particularly limited, and various structures can be employed. The outer first electrode 121a may be an electrode integrated with the inner first electrode 120c.

  The outer second electrode 121b is disposed between the first film member 120a and the second film member 120b. The outer second electrode 121b is spaced from the outer first electrode 121a in the direction along the outer peripheral edge of the film element 12. The outer second electrode 121b is connected to the inner second electrode 120d of the optical property changing unit 120. That is, the outer second electrode 121b is not connected to the inner first electrode 120c. The structure for connecting the outer second electrode 121b and the inner first electrode 120d is not particularly limited, and various structures can be adopted. The outer second electrode 121b may be an electrode integrated with the inner second electrode 120d.

  The outer first electrode 121a and the outer second electrode 121b are arranged at a predetermined distance in the Y direction. Therefore, the outer first electrode 121a and the outer second electrode 121b do not overlap in plan view.

  An example of the material of the outer first electrode 121a and the outer second electrode 121b is a conductive paste. An example of the conductive paste is silver paste.

  The outer first electrode 121a and the outer second electrode 121b are, for example, a rectangle having one side of 1 mm to 10 mm, preferably 2 mm to 5 mm in plan view. The thickness dimension of the outer first electrode 121a and the outer second electrode 121b is, for example, not less than 10 μm and not more than 500 μm. Such a configuration ensures that the outer first electrode 121a and the outer second electrode 121b are securely cut from the cut surface of the cut portion 121 when the cut portion 121 of the film element 12 is cut in the lens manufacturing method described later. Contributes to exposing.

  The adhesive layer 120f is disposed in a portion surrounding the liquid crystal layer 120e in the cut portion 121 between the first film member 120a and the second film member 120b. The adhesive layer 120f has a continuous annular shape so as to surround the liquid crystal layer 120e. Such an adhesive layer 120f functions as a seal member that fixes the first film member 120a and the second film member 120b and prevents leakage of the liquid crystal material constituting the liquid crystal layer 120e.

  In the case of the present embodiment, the adhesive layer 120f indirectly fixes the first film member 120a and the second film member 120c. Specifically, in the case of this embodiment, the adhesive layer 120f includes the first film member 120a and the second film member 120c, the inner first electrode 120c, the first alignment film (not shown), and the inner second layer. The electrode 120d and the second alignment film (not shown) are fixed. The adhesive layer 120f may directly fix the first film member 120a and the second film member 120c.

  The adhesive layer 120f is made of a cured product of an adhesive. The material of the adhesive is not particularly limited as long as it has the desired translucency and can appropriately bond the first film member 120a and the second film member 120b.

  In the case of this embodiment, the to-be-cut part 121 is provided at the end on the X direction + side of the outer peripheral edge of the optical property changing part 120. The to-be-cut part 121 protrudes in the X direction + side from the end part on the X direction + side in the outer periphery of the optical property changing part 120.

  In the case of the film element 12 shown in FIG. 4, the cut portion 121 is arranged on the bridge 23 side of the frame 2 in a state of being incorporated in the electronic glasses A as shown in FIG. 1. However, the position of the to-be-cut part 121 is not limited to the above-mentioned position. The position of the part to be cut 121 is appropriately determined according to the frame shape of the eyewear or the arrangement of the conductive wires provided in the frame.

  The cut part 121 as described above is cut in the post-processing. Specifically, in the present embodiment, the cut portion 121 is cut along the ZY plane in the orthogonal coordinate system shown in FIGS. 3 and 4. When the part 121 to be cut is cut, the outer first electrode 121a and the outer second electrode 121b are exposed to the outside. In addition, the edge part of the 1st film member 120a and the 2nd film member 120b is also exposed in the state by which the to-be-cut | disconnected part 121 was cut | disconnected. Moreover, the cutting direction of the to-be-cut | disconnected part 121 is not limited to the above-mentioned direction.

  Since the part to be cut 121 and the optical property changing part 120 are partitioned by the adhesive layer 120f (see FIG. 7), the liquid crystal material of the liquid crystal layer 120e leaks to the outside even when the part to be cut 121 is cut. There is no.

  In the case of the present embodiment, a structure in which the cut portion 121 protrudes from the outer peripheral edge of the optical property changing portion 120 is adopted. For this reason, the outer first electrode 121a and the outer second electrode 121b are likely to come into contact with the conductive wire provided on the frame side of the eyewear, and electrical conduction between the optical property changing unit 120 and the control unit 3 is easily ensured.

[About spacer members]
The spacer member 13 will be described with reference to FIG. The spacer member 13 is provided between the first substrate 10 and the second substrate 14 and prevents the first substrate 10 and the second substrate 14 from approaching the thickness dimension of the spacer member 13.

  Such spacer members 13 are arranged on the surface 101 of the first substrate 10 at a plurality of locations around the portion to which the film element 12 is fixed (in this embodiment, three locations). The spacer members 13 are preferably arranged at equal intervals (for example, at intervals of 120 degrees) in the circumferential direction of the first substrate 10.

  In this embodiment, the spacer member 13 is a columnar member and has a predetermined thickness dimension. The edge part (upper end part of FIG. 5) of the Z direction + side of the spacer member 13 is fixed to the back surface 141 of the 2nd board | substrate 14 with an adhesive agent, for example. On the other hand, the end portion (the lower end portion in FIG. 5) on the Z direction − side of the spacer member 13 is fixed to the surface 101 of the first substrate 10 with, for example, an adhesive.

  The thickness dimension of the spacer member 13 is 0.2 mm or more and 5 mm or less. Preferably, the thickness dimension of the spacer member 13 is 0.2 mm or more and 2 mm or less. More preferably, the thickness dimension of the spacer member 13 is T + 50 μm or more and T + 100 μm or less in relation to the thickness dimension T of the film element 12.

  By arranging the spacer member 13 between the first substrate 10 and the second substrate 14, a space 162 for arranging the second adhesive layer 15 between the first substrate 10 and the second substrate 14. Is formed. The thickness dimension of the space 162 is equal to the thickness dimension of the spacer member 13. Further, the thickness dimension of the space 162 is larger than the thickness dimension of the film element 12.

  The spacer member 13 is preferably a material that is not easily deformed due to thermal change when the second adhesive layer 15 is thermally cured. The spacer member 13 is preferably a plastic containing, for example, polyethylene, polypropylene, polyvinyl chloride, ethylene / vinyl acetate copolymer resin, or polytetrafluoroethylene from the viewpoint of ease of molding and cost reduction.

  The spacer member 13 as described above is removed in post-processing (specifically, peripheral processing).

  The spacer member may have a partial cylindrical shape having a discontinuous portion at one place in the circumferential direction. Such a partial cylindrical spacer member has an outer diameter substantially the same as the outer diameter of the first substrate 10. The partially cylindrical spacer is fixed to the surface 101 of the first substrate 10 along the outer peripheral edge of the surface 101. The discontinuous portion described above is a supply port for supplying the curable composition constituting the second adhesive layer 15 to the space 162.

  Further, the spacer member may have a cylindrical shape that is continuous over the entire circumference. Such a cylindrical spacer member has a through-hole or notch penetrating from the inner peripheral surface to the outer peripheral surface in at least one place in the circumferential direction. Such a cylindrical spacer member has substantially the same outer diameter as the outer diameter of the first substrate 10. The cylindrical spacer is fixed to the surface 101 of the first substrate 10 along the outer peripheral edge of the surface 101. The above-described through-hole or notch is a supply port for supplying the curable composition constituting the second adhesive layer 15 to the space 162.

[About the second substrate]
The second substrate 14 (also referred to as a second substrate) will be described with reference to FIG. The second substrate 14 is arranged on the Z direction + side with respect to the film element 12 and covers the film element 12 via the second adhesive layer 15.

  Such a 2nd board | substrate 14 is an optical element which consists of a transparent plate-shaped member. Specifically, the second substrate 14 has a disk shape that curves convexly toward the Z direction + side. The surface 140 of the second substrate 14 is a convex curved surface that curves convexly toward the Z direction + side. On the other hand, the back surface 141 of the second substrate 14 is a concave curved surface that curves in a concave shape toward the Z direction + side.

  The external dimensions of the second substrate 14 are preferably the same as the external dimensions of the first substrate 10. Moreover, the thickness dimension of the 2nd board | substrate 14 is 0.5 mm or more and 2.0 mm or less. Preferably, the thickness dimension of the second substrate 14 is not less than 0.8 mm and not more than 1.5 mm.

  The distance between the surface 140 of the second substrate 14 and the surface of the film element 12 is preferably 0.5 mm or greater and 14.0 mm or less.

  The front surface 140 and the back surface 141 are finished as optical surfaces by finishing. In the present embodiment, the surface 140 is a spherical surface having a single curvature. The back surface 141 is also a spherical surface having a single curvature. The curvature of the front surface 140 and the curvature of the back surface 141 are equal. Therefore, the distance between the front surface 140 and the back surface 141 is constant throughout. In the present embodiment, the curvatures of the front surface 140 and the back surface 141 of the second substrate 14 and the curvature of the front surface 101 of the first substrate 10 are equal. In the present embodiment, the curvature of the front surface 140 and the back surface 141 of the second substrate 14 is different from the curvature of the back surface 102 of the first substrate 10.

  Note that the curvature of the front surface 140 and the curvature of the back surface 141 may be different. Further, at least one surface of the front surface 140 and the back surface 141 may be a complex curved surface having a plurality of curvatures. Further, at least one of the front surface 140 and the back surface 141 of the second substrate 14 may be a flat surface.

  The second substrate 14 is made of inorganic glass or organic glass, like the first substrate 10 described above. The second substrate 14 is preferably made from organic glass. Organic glass is a thermosetting material composed of thermosetting polyurethanes, polythiourethanes, polyepoxides, polyepisulfides, poly (meth) acrylates, and thermosetting materials composed of copolymers and mixtures thereof ( Any of the cross-linked materials. The organic glass may be a thermoplastic material such as polycarbonates and thermoplastic polyurethanes. Alternatively, the organic glass may be a diethylene glycol bisallyl carbonate polymer or a copolymer. The material of the second substrate 14 is preferably the same material as the material of the first substrate 10.

[About the second adhesive layer]
The second adhesive layer 15 will be described with reference to FIG. The second adhesive layer 15 is disposed in a space 162 between the first substrate 10 and the second substrate 14 to fix the first substrate 10 and the second substrate 14 and to protect the film element 12 from impact. .

  Such a second adhesive layer 15 is an optical element made of a transparent plate member. Specifically, the second adhesive layer 15 has a disk shape that curves convexly toward the Z direction + side. The surface of the second adhesive layer 15 is a convex curved surface that curves in a convex shape toward the Z direction + side. The back surface of the second adhesive layer 15 is a concave curved surface that curves in a concave shape toward the Z direction + side. The 2nd contact bonding layer 15 has the recessed part 150 which arrange | positions the film element 12 in a back surface.

  The second adhesive layer 15 as described above is formed by injecting a curable composition into the space 162 via a communicating portion 161 of the fixing member 16 described later and curing it.

  Examples of the curable composition constituting the second adhesive layer 15 include various optical adhesives. In particular, as an example of the curable composition constituting the second adhesive layer 15, a thermosetting adhesive and a UV curable adhesive are preferable. Each of these adhesives preferably has a low viscosity.

[Fixing member]
The fixing member 16 has, for example, a tape shape, and is wound around the outer peripheral surface of the first substrate 10 and the outer peripheral surface of the second substrate 14 so as to surround the space 162. The fixing member 16 also has a function of fixing the first substrate 10 and the second substrate 14. Such a fixing member 16 has a communication portion 161 that communicates the space 162 with the external space in at least one place in the circumferential direction.

  The thickness dimension of the fixing member 16 (the horizontal dimension in FIG. 5) is, for example, 10 μm or more and 200 μm or less in terms of operability, dimensional stability of the molded product, airtightness of the overlapped portion, strength, and the like. is there.

  The fixing member 16 is, for example, polyethylene, polypropylene, polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, polyphenylene sulfide, polyester, polycarbonate, polyvinyl chloride, polytetrafluoroethylene, polysiloxane resin, polyimide resin, or cellulose, or A base substrate made of such a copolymer or mixture is coated with a siloxane-based, (meth) acrylic-based, epoxy-based or rubber-based adhesive.

  The fixing member 16 may be coated with, for example, a quartz film on which silicon oxide is deposited. The fixing member 16 may be coated with, for example, an organic coating agent, an inorganic coating agent, or a mixture thereof. Furthermore, the fixing member 16 may be bonded to another base material having a low water vapor permeability. Each of such configurations is effective in reducing the water vapor permeability of the fixing member 16.

[Method of manufacturing semi-finished lens]
Next, a method for manufacturing the semifinished lens 1A will be described with reference to FIGS. 6 and 9A to 9F.

  First, the operator cuts out the adhesive layer 11X with a protective film slightly larger than the film element 12 from the adhesive layer 11X with the protective film shown in FIG. Next, an operator peels off the front side protective film 110 of the adhesive layer 11X with protective film that has been cut out, and exposes the surface of the first adhesive layer 11.

  And an operator affixes the surface of the 1st contact bonding layer 11 on the back surface of the film element 12, and builds the 1st assembly M1 (refer FIG. 9A). In the first assembly M1, the film element 12 and the first adhesive layer 11 are not curved. In the first assembly M1, the back surface (the lower surface in FIG. 9A) of the first adhesive layer 11 is protected by the back-side protective film 111. For this reason, it is possible to distribute and store the first assembly M1 while protecting the first adhesive layer 11.

  Next, the operator peels the back side protective film 111 from the first assembly M1 to expose the back side of the first adhesive layer 11. Then, the operator attaches the back surface of the first adhesive layer 11 in the first assembly M1 to the front surface 101 of the first substrate 10 to produce the second assembly M2 (see FIG. 9B).

  The operation of attaching the first assembly M1 to the surface 101 of the first substrate 10 is performed using a jig (not shown). The jig has a holding surface capable of holding the first assembly M1. The holding surface is elastically deformed along the surface 101 when pressed against the surface 101. When the holding surface holding the film element 12 is pressed against the surface 101, the film element 12 is attached to the surface 101 while being deformed along the surface 101. Note that the second assembly M2 may be a semi-finished lens.

  Next, an operator arrange | positions the several spacer member 13 around the part to which the film element 12 was fixed in the surface 101 of the 1st board | substrate 10, and makes the 3rd assembly M3 (refer FIG. 9C). In the third assembly M3, the end portions on the Z direction − side of each spacer member 13 (lower end portions in FIG. 9C) are respectively fixed to the surface 101 of the first substrate 10 with an adhesive, for example.

  Next, an operator arrange | positions the 2nd board | substrate 14 on the Z direction + side of the 1st board | substrate 10, and makes the 4th assembly M4 (refer FIG. 9D). In the fourth assembly M4, the end portions (upper end portions in FIG. 9D) on the Z direction + side of the spacer members 13 are respectively fixed to the back surface 141 of the second substrate 14 with an adhesive, for example. In the fourth assembly M4, a space 162 exists between the first substrate 10 and the second substrate 14.

  Next, the operator wraps the fixing member 16 around the outer peripheral surface of the first substrate 10 and the outer peripheral surface of the second substrate 14, and forms the fifth assembly M <b> 5 (see FIG. 9E). In the fifth assembly M <b> 5, the opening of the space 162 is closed by a portion other than the communication portion 161 of the fixing member 16. In other words, the space 162 communicates with the external space only through the communication portion 161.

  Finally, as indicated by an arrow F in FIG. 9F, the operator supplies the curable composition constituting the second adhesive layer 15 to the space 162 via the communication portion 161 of the fixing member 16. Then, the operator cures the curable composition in the space 162 to produce the semi-finished lens 1A (see FIG. 9F).

[How to make a lens from a semi-finished lens]
Next, a method for manufacturing the lens 1 from the semi-finished lens 1A will be described with reference to FIGS. 10A to 10E. The prescription data regarding the eyewear lens is prescribed at an ophthalmologist or an eyewear store. Based on the prescription data, the lens manufacturer processes the semi-finished lens 1A to produce a precursor lens called a so-called round lens.

  In the lens manufacturer, various coating processes are performed on the surface of the round lens as necessary. At a store, a precursor lens supplied from a lens manufacturer is processed in accordance with the frame shape of eyewear to make a lens 1 called a so-called lens. The lens may be manufactured by a lens manufacturer.

  In addition, a round lens is a lens in which the shape of planar view is circular or elliptical, and S power (power related to hyperopia and myopia) and C power (power related to astigmatism) are set. On the other hand, the target lens is a lens processed into a shape that can be incorporated into an eyewear frame.

[About round lenses]
FIG. 10B is a cross-sectional view of the round lens 1c. The round lens 1c shown in FIG. 10B is obtained by subjecting the back surface of the semi-finished lens 1A (see FIG. 10A) (that is, the back surface 102 of the first substrate 10) to back processing such as cutting and polishing. It is constructed by removing the removal portion 1a1 (the portion to which the oblique lattice is added in FIG. 10A). Such back surface processing is included in post-processing.

  In the back surface processing, the semi-finished lens 1A is fixed to the processing apparatus with the back surface facing the cutting tool or the polishing tool. At this time, the surface of the semi-finished lens 1 </ b> A (that is, the surface 140 of the second substrate 14) is fixed to the processing apparatus by fixing means called so-called blocking.

  In blocking, a connector called a block piece is disposed between the surface of the semi-finished lens 1A and the processing apparatus. The semi-finished lens 1A is fixed to the processing apparatus via a block piece. The block piece needs to be securely fixed to the surface without damaging the surface of the semi-finished lens 1A. For this purpose, the block piece is fixed to the surface of the semi-finished lens 1A via a low melting point alloy (alloy), a thermoplastic resin, or wax.

  Further, the semi-finished lens 1A may be fixed to the processing apparatus by fixing means called so-called chucking. Chucking is a fixing means for fixing the semi-finished lens 1A to the processing apparatus by gripping the outer peripheral surface of the semi-finished lens 1A with the gripping means.

  The semi-finished lens 1A fixed to the processing apparatus is subjected to processing for setting the S frequency and the C frequency on the back surface. In this way, the semi-finished lens 1A is processed into a round lens.

  In the plan view of the round lens 1c, the entire film element 12 is disposed closer to the center than the outer peripheral edge of the round lens 1c. Therefore, the cut portion 121 of the film element 12 is not cut in the state of the round lens 1c.

[About coating processing]
Next, as shown in FIG. 10C, the surface of the round lens 1c (that is, the surface 140 of the second substrate 14) is coated as necessary. The surface-side coating layer 17a formed on the surface of the round lens 1c includes, for example, at least one of a primer layer, a hard coat layer, an antireflection film layer, an antifogging coat layer, an antifouling layer, and a water repellent layer. The surface side coating layer 17a may have a multilayer structure including a plurality of types of layers. However, the surface side coating layer 17a may have a single layer structure composed of one kind of layer.

  As shown in FIG. 10C, the back surface of the round lens 1c (that is, the back surface 102 of the first substrate 10) is also coated as necessary. The back side coating layer 17b formed on the back side of the round lens 1c may be the same as or different from the front side coating layer 17a.

  The coating agent constituting the back side coating layer 17b and the front side coating layer 17a includes an ultraviolet absorber, an infrared absorber, a light stabilizer, an antioxidant, a dye, a pigment, an antistatic agent, various leveling agents, and Other additives may be added.

  The ultraviolet absorber is effective in protecting the lens and eyes from ultraviolet rays. An infrared absorber is effective in protecting eyes from infrared rays. The light stabilizer and the antioxidant are effective for improving the weather resistance of the lens. Dyes and pigments are effective in improving the fashionability of lenses. Examples of the dye include a photochromic dye. Examples of pigments include photochromic pigments. Various leveling agents are effective in improving the coating property of the coating agent. Examples of other additives include known additives that contribute to the improvement of lens performance.

[Primer layer]
The primer layer is formed between the front or back surface of the round lens and the hard coat layer. The primer layer functions as an adhesive for adhering the hard coat layer to the front or back surface of the round lens.

  The thickness of the primer layer is usually 0.1 μm or more and 10 μm or less. The primer layer is formed by, for example, a coating method or a dry method.

  When the primer layer is formed by a coating method, the primer composition is applied to the surface to be coated by a known coating method. Examples of known coating methods include spin coating and dip coating. When the primer composition applied to the front or back surface of the round lens is solidified, a primer layer is formed on the front or back surface of the round lens.

  On the other hand, when the primer layer is formed by a dry method, the primer layer is formed by a known dry method such as a CVD method or a vacuum deposition method. In addition, before forming the primer layer, the front surface or the back surface of the round lens may be subjected to at least one pretreatment of alkali treatment, plasma treatment, and ultraviolet treatment. Such pretreatment is effective in improving the adhesion between the front or back surface of the round lens and the primer layer.

  The primer composition constituting the primer layer is preferably a material having high adhesion to the front or back surface of the round lens. Examples of the primer composition include a urethane resin, an epoxy resin, a polyester resin, a melanin resin, and a primer composition mainly composed of polyvinyl acetal.

  The primer composition may be solventless. However, when it is desired to adjust the clay of the primer composition, the primer composition may be a solvent having a property that does not affect the lens.

[About hard coat layer]
The hard coat layer is a coating layer for the purpose of imparting functions such as scratch resistance, abrasion resistance, moisture resistance, hot water resistance, heat resistance, and weather resistance to the front or back surface of the round lens. The thickness dimension of the hard coat layer is usually 0.3 μm or more and 30 μm or less.

  When providing the above-mentioned primer layer, the hard coat layer is formed on the surface of the primer layer. The hard coat layer may be formed directly on the front surface or the back surface of the round lens.

  When forming the hard coat layer, first, the hard coat composition is applied to the coated surface by a known application method. Next, when the applied hard coat composition is cured, a hard coat layer is formed on the coated surface. Examples of the method for applying the hard coat composition include spin coating and dip coating.

  Examples of the method of curing the hard coat composition include a method of photocuring by irradiating light energy rays such as ultraviolet rays or visible light, and a method of thermally curing by applying thermal energy. In the case of thermosetting, the curing temperature is 90 ° C. or higher and 130 ° C. or lower, preferably 100 ° C. or higher and 110 ° C. or lower. The curing time is 0.5 h or more and 3 h or less, preferably 1 h or more and 3 h or less.

  Before forming the hard coat layer, the coated surface may be subjected to pretreatment such as alkali treatment, plasma treatment, and ultraviolet treatment. Such pretreatment is effective in improving the adhesion between the coated surface and the hard coat layer.

  Examples of hard coat compositions include curable organosilicon compounds and oxide fine particles of Si, Al, Sn, Sb, Ta, Ce, La, Fe, Zn, W, Zr, In, and Ti (composite oxides) (Including fine particles).

  Further, examples of hard coat compositions include amines, amino acids, metal acetylacetonate complexes, organic acid metal salts, perchloric acids, perchloric acid salts, acids, metal chlorides, and multifunctional epoxy compounds. Can be mentioned. The hard coat composition may be solventless. However, when it is desired to adjust the viscosity of the hard coat composition, the hard coat composition may be a solvent having a property that does not affect the lens.

[Antireflection coating layer]
The antireflection layer is formed on the surface of the hard coat layer as necessary. The antireflection layer includes an inorganic antireflection layer and an organic antireflection layer.

In general, the inorganic antireflection layer is formed by a dry method such as a vacuum deposition method, a sputtering method, an ion plating method, an ion beam assist method, or a CVD method using an inorganic oxide such as SiO ₂ or TiO _2. It is formed.

A vacuum evaporation method is normally performed under the pressure of 10 ^{< -3} > Pa or more and 10 ^<-2 > Pa or less. The vapor pressure of the evaporating substance emitted from the evaporation source may be higher than this. The vapor pressure of the evaporating substance emitted from the evaporation source is suitably 10 ⁻² Pa to 1 Pa. In practice, a plurality of evaporation sources are often installed in the apparatus. The evaporation temperature is preferably 70 ° C. or higher and 100 ° C. or lower, more preferably 80 ° C. or higher and 90 ° C. or lower.

  On the other hand, the organic antireflection layer is generally formed by a wet method using a composition containing an organosilicon compound and silica-based fine particles having internal cavities.

  The antireflection layer may be a single layer or a multilayer. When the antireflection layer is a single layer, the refractive index of the reflective layer is preferably at least 0.1 or less smaller than the refractive index of the hard coat layer.

From the viewpoint of effectively exhibiting the antireflection function, the antireflection layer preferably has a multilayer structure. When the antireflection layer has a multilayer structure, it is preferable that low refractive index films and high refractive index films are alternately laminated. The difference between the refractive index of the low refractive index film and the refractive index of the high refractive index film is preferably 0.1 or more. Examples of the high refractive index film include films such as ZnO, TiO ₂ , CeO ₂ , Sb ₂ O ₅ , SnO ₂ , ZrO ₂ , and Ta ₂ O ₅ . On the other hand, examples of the low refractive index film include a SiO ₂ film. The thickness dimension of the antireflection layer is usually from 50 nm to 150 nm.

[About lens lens]
Next, a method of making the lens 1 (also referred to as a lens) shown in FIG. 10E from the round lens 1c shown in FIG. 10C will be described. For example, in the eyewear store or the lens manufacturer, the lens 1 is processed at an outer periphery (for example, a portion with a diagonal lattice in FIG. 10D) on the outer peripheral surface of the round lens 1c. , Cutting, polishing). Such peripheral processing is included in post-processing.

  In the outer periphery processing, the round lens 1c is fixed to a processing apparatus (for example, a patternless escher Lex1000 manufactured by Nidec Co., Ltd.) with the outer peripheral surface facing the cutting tool or the polishing tool. The round lens fixed to the processing apparatus is processed on the outer peripheral surface according to the frame shape of the eyewear selected by the user. In this way, the round lens 1 c is processed into the lens 1.

  In the above-described outer periphery processing, the round lens 1c is processed so as to be along the outer peripheral edge of the film element 12 other than the cut portion 121. At this time, the cut portion 121 is cut so that the end portions of the outer first electrode 121a and the outer second electrode 121b are exposed from the outer peripheral surface of the lens lens 1d. In the case of this embodiment, the part to be cut 121 has a film shape and is provided so as to protrude from the optical property changing part 120. For this reason, the cutting operation | work of the to-be-cut | disconnected part 121 can be performed easily. As a result, the occurrence of defects due to cutting work is reduced.

  In the back surface processing and the outer periphery processing described above, the optical property changing portion 120 of the film element 12 is not cut. Further, the optical property changing unit 120 is not destroyed even under a reduced pressure environment and a pressurized environment in the above-described coating process. Therefore, each processing described above is performed by the same processing as that for manufacturing a normal spectacle lens. For this reason, a new processing device is not required to process the semi-finished lens 1A according to the present embodiment.

[Operations and effects of this embodiment]
According to the present embodiment having the above-described configuration, a semi-finished lens can be provided with less occurrence of problems due to post-processing.

[Embodiment 2]
With reference to FIG. 11, the structure of the semi-finished lens 1A according to the second embodiment of the present invention will be described. FIG. 11 is a cross-sectional view of the semi-finished lens 1A according to the second embodiment.

  The semi-finished lens 1 </ b> A includes a first substrate 10, a first adhesive layer 11, a film element 12, and a coating layer 18. The 1st board | substrate 10, the 1st contact bonding layer 11, and the film element 12 are the same as that of the case of Embodiment 1 mentioned above.

[About coating layer]
The coating layer 18 is a cured layer made of a curable composition. Examples of the curable composition include various curable resins such as a thermosetting resin or a photocurable resin.

  The coating layer 18 is formed, for example, by dip coating in which the surface of the first substrate 10 to which the first adhesive layer 11 and the film element 12 are fixed is immersed in a solution of the curable composition. Further, for example, a hard coat layer or an antireflection film layer may be further provided on the coating layer 18. The method for forming the hard coat layer and the antireflection film layer is as described above. Other structures and operations / effects are the same as those of the first embodiment.

[Appendix]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the film element may be fixed to the second substrate 14. In this case, the second substrate 14 is the first substrate, and the first substrate 10 is the second substrate.

  The eyewear according to the present invention includes glasses (including electronic glasses and sunglasses) and goggles having an auxiliary mechanism for improving the user's visual acuity, such as a visual acuity correction lens. The eyewear according to the present invention includes various devices (for example, a glasses-type wearable terminal and a head-mounted display) having a mechanism for presenting information to the user's field of view or eyes.

  Further, the eyewear according to the present invention may be configured to hold an auxiliary mechanism for improving visual acuity or visibility, a mechanism for presenting information, or the like in front of or around the user's eyes. The eyewear according to the present invention is not limited to the glasses type that can be worn on both ears, but may be a type that is worn on the head or one ear. The eyewear according to the present invention is not limited to eyewear for both eyes, and may be eyewear for one eye.

  The semi-finished lens according to the present invention is not limited to glasses lenses, and can be processed into various eyewear lenses.

A Electronic glasses 1 Lens 2 Frame 21 Front 22 Temple 23 Bridge 3 Control unit
4 switch
5 Power supply
1A Semi-finished lens 10 First substrate 101 Front surface 102 Back surface 11 First adhesive layer 110 Front side protective film 111 Back side protective film 11X Adhesive layer with protective film 12 Film element 120 Optical property changing portion 120a First film member 120b Second film member 120c Inner first electrode 120d Inner second electrode 120e Liquid crystal layer 120f Adhesive layer 121 Cut portion 121a Outer first electrode 121b Outer second electrode 13 Spacer member 14 Second substrate 140 Front surface 141 Back surface 15 Second adhesive layer 150 Recess 16 Fixed Member 161 communicating portion 162 space 17a surface side coating layer 17b back surface side coating layer 18 coating layer 1a removal portion 1a1 first removal portion 1a2 second removal portion 1c round lens 1d lens lens M1 first assembly M2 second assembly M3 Third Three-dimensional M4 fourth-assembly M5 the fifth set of a three-dimensional

Claims (15)

A semi-finished lens that is post-processed to become an eyewear lens,
A transparent first substrate,
An optical property changing part having a liquid crystal layer fixed to the main surface of the first substrate and having a light transmission property changed by a change in alignment state based on electrical control, a part to be cut by the post-processing, And a film element provided in the cut part and having an electrode part connected to the optical property changing part,
Semi-finished lens.   The semi-finished lens according to claim 1, wherein the cut portion protrudes in a direction along the main surface from a portion adjacent to the cut portion.   The semi-finished lens according to claim 1, further comprising a first adhesive layer disposed between the first substrate and the film element.   The semi-finished lens according to any one of claims 1 to 3, further comprising a second substrate disposed to face the main surface. A spacer member disposed between the first substrate and the second substrate;
The semi-finished lens according to claim 4, further comprising: a second adhesive layer disposed between the first substrate and the second substrate.   The semi-finished lens according to claim 4 or 5, wherein a distance between the surface of the second substrate and the surface of the optical property changing portion is 0.5 mm or more and 14.0 mm or less.   The semi-finished lens according to any one of claims 1 to 3, further comprising a coating layer provided to face the main surface and covering the main surface and the film element.   The semi-finished lens according to any one of claims 1 to 7, wherein the light transmittance changes based on a change in light absorption rate in the liquid crystal layer.   The semi-finished lens according to claim 1, wherein the light transmittance changes based on a change in a light scattering rate in the liquid crystal layer. A method for producing a semi-finished lens according to claim 1,
Providing a first adhesive layer on at least one of the first substrate and the film element;
Adhering the film element to the main surface of the first substrate via the first adhesive layer,
Manufacturing method of semi-finished lens. Disposing a transparent second substrate facing the main surface;
Fixing a fixing member to the outer peripheral surface of the first substrate and the outer peripheral surface of the second substrate so as to surround the space between the first substrate and the second substrate;
The method for producing a semi-finished lens according to claim 10, further comprising: injecting and curing a transparent curable composition into the space.   The method of manufacturing a semi-finished lens according to claim 10, further comprising a step of forming a coating layer on the main surface and the surface of the film element after the step of providing the first adhesive layer. A method for producing a lens for producing a lens for eyewear by post-processing the semi-finished lens according to any one of claims 1 to 9,
Applying a back surface processing to the semi-finished lens;
Cutting the part to be cut and exposing the electrode part to the outside.
Lens manufacturing method.   The method of manufacturing a lens according to claim 13, further comprising a step of forming a hard coat film on at least one of a front surface and a back surface of the lens.   The method of manufacturing a lens according to claim 14, further comprising a step of forming an antireflection film on at least one of a front surface and a back surface of the lens.

Images