CN102259431A - Multi-piece optical base material, manufacturing method thereof, and lens module - Google Patents

Abstract

The invention discloses a method for manufacturing a multi-piece optical substrate, which comprises the following steps: taking a first component, wherein the first component is provided with a central hole and a core part which defines a first component central line; preparing a mold set, wherein the mold set is provided with a plastic filling space and forms a mold cavity center line; placing the first member in the mold set with a predetermined portion of the first member contacting the plastic-filled space; c, positioning the core fixing part of the first component to be compared with the center line of the mold cavity of the mold set; d, taking a transparent plastic material into the plastic filling space of the mold set, and curing and forming the second member to be next to the first member to form an optical substrate; e, opening the mold set and taking out the optical substrate. In addition, the invention also provides a structure of a plurality of body optical substrates and a lens module provided with the body optical substrates.

Description

Multi-piece optical base material, manufacturing method thereof, and lens module

technical field

The present invention relates to an optical substrate, more specifically, to a multi-piece optical substrate, a manufacturing method thereof, and a lens module.

Background technique

The functional block of the optical substrate is usually in the middle part, and the peripheral part is usually fixed or decorated. Therefore, if the whole is made of a single high-priced material, the cost will be too high; therefore, multiple volume optical substrates are produced.

However, in the existing multi-piece optical substrate, in the process of molding and bonding, there are still precision errors in components such as raw molds, so the two components after molding do not have the same optical center reference, so when using When the predetermined reference of one component is used as assembly calibration, the optical center of the second component cannot accurately correspond to the preset position, thus causing various poor optical effects between the lenses.

That is to say, there are still many things that can be improved in the manufacturing method of the multi-piece volume optical substrate in the prior art; in view of this, the present inventors actively invest in research and development, innovation and improvement, and finally complete the present invention.

Contents of the invention

The main purpose of the present invention is to provide a multi-piece optical base material and its manufacturing method, which can use a predetermined position of a first member as a reference, form a second member and connect it to the first member, so that the first member An optical center of the two components refers to the datum of the first component, so that after the multi-piece optical base material is assembled and combined with other components, it has an accurate optical center corresponding effect.

In order to achieve the above object, the present invention provides a method for manufacturing a multi-piece optical substrate, which includes the following steps: a) taking a first member, the first member has a central hole and a certain stamen defined by There is a first component centerline; b) preparing a mold set, the mold set has a plastic filling space and constitutes a mold cavity centerline; the first component is placed in the mold set, and the first component predetermined part contacts the plastic Filling the space; c) aligning the fixed stamen of the first member with the center line of the mold cavity of the mold set; d) taking a transparent plastic material into the plastic filling space of the mold set to solidify and form the second The components are connected to the first component to form an optical substrate; e) open the mold set and take out the optical substrate.

Of course, the present invention can also provide a lens module, which is installed with the multi-piece optical substrate manufactured by the above-mentioned manufacturing method.

In order to achieve the above object, the present invention provides a multi-piece optical substrate, comprising a first member, the first member has a central hole and a certain stamen, which defines a centerline of the first member; a second member , connected to the central hole of the first member and solidified and adjacent to the first member, and defining a second member centerline, the second member centerline is determined based on the stamen portion of the first member and obtain.

Of course, the present invention can also provide a lens module, which is installed with the aforementioned multi-piece optical substrate.

Description of drawings

Fig. 1 is a sectional view of the first component of a preferred embodiment of the present invention;

Fig. 2 is a schematic view of a preferred embodiment of the present invention being installed in a mold;

Fig. 3 is a schematic diagram of plastic filling molding in a preferred embodiment of the present invention;

Fig. 4 is the sectional view of the finished product of a preferred embodiment of the present invention;

Fig. 5 is a sectional view of the first component of another preferred embodiment of the present invention;

Fig. 6 is another preferred embodiment of the present invention installed in the mold schematic diagram;

Fig. 7 is a schematic diagram of another preferred embodiment of the present invention for plastic filling molding;

Fig. 8 is a finished sectional view of another preferred embodiment of the present invention;

Fig. 9 is a cross-sectional view of the first component of another preferred embodiment of the present invention;

Fig. 10 is another preferred embodiment of the present invention installed in the mold schematic diagram;

Fig. 11 is a schematic diagram of another preferred embodiment of the present invention for plastic filling and molding;

Fig. 12 is a finished sectional view of another preferred embodiment of the present invention;

FIG. 13 is a combined cross-sectional view of a lens module of the present invention.

[Description of main component symbols]

Optical Substrate 1, 1A, 1B, 1C

First member 10, 10A, 10B, 10C

Center hole 11

Outer ring part 13, 13A, 13B

Inner ring part 14, 14A, 14B

Bottom 15

Top 16, 16A

First member centerline L1

Second member 20, 20A, 20B, 20C

Plastic material 20M

First member joints 24, 24A, 24B

Bottom 25

Top 26

Second member centerline L2

Envelope 30B

32B around the outer ring

lens module 100

Fixed core device C

Mold group M, MA, MB

Plastic filled space M0

Cavity center line L0

First mold M1, M1A, M1B

The second mold M2, M2A, M2B

Mold core M3B

Detailed ways

In order to describe in detail the structure, features and effects of the present invention, the following preferred embodiments are given below and are described in conjunction with the drawings, wherein:

Please refer to FIG. 1 to FIG. 4 , the manufacturing method of a multi-piece optical substrate provided by a preferred embodiment of the present invention includes the following steps:

a) Take a first member 10, the first member 10 has a central hole 11 and a certain stamen defining a first member centerline L1. The first member 10 has an outer ring portion 13 and an inner ring portion 14 , wherein the fixed core portion is the outer ring portion 13 . The first component 10 has a bottom surface 15 and a top surface 16 .

b) Prepare a mold set M, the mold set M has a plastic filling space M0 and forms a mold cavity centerline L0; place the first member 10 on the mold set M, and the predetermined part of the first member 10 contacts the plastic Fill space M0.

c) Positioning the core part of the first member 10 and the mold cavity centerline L0 of the mold set M are corrected.

d) Take a transparent plastic material 20M and enter the plastic filling space M0 of the mold set M to solidify and shape the second member 20 next to the first member 10 to form an optical substrate 1 . The filling step of the plastic material 20M is done by dispensing, injection or extrusion. Wherein the combination method of the second member 20 and the first member 10 is butt joint in this embodiment. Wherein the plastic material 20M is light hardening material or cooling hardening material.

e) Open the mold set M, and take out the optical substrate 1 .

In this embodiment, the mold cavity centerline L0 of the mold set M overlaps with the first member centerline L1 of the first member 10 .

In the above steps, a preferred embodiment of the present invention can provide an optical substrate 1, comprising: a first member 10 and a second member 20, and the second member 20 forms a first member connecting portion 24, A bottom surface 25 and a top surface 26 , and a second component centerline L2 defined by the bottom surface 25 and the top surface 26 can completely coincide with the first component centerline L1 of the first component 10 .

Through this, when the outer ring portion 13 of the first member 10 is assembled with other parts (such as a lens module), the second member centerline L2 of the second member 20 can be accurately aligned with the axis to be set. In this way, the expected accurate optical projection effect can be obtained.

Next, as shown in FIGS. 5 to 8 , another preferred embodiment of the method for manufacturing a multi-piece optical substrate according to the present invention is mostly the same as the previous embodiment, and its optical substrate 1A includes a first member 10A and A second member 20A.

The difference mainly lies in: the combination method of the second member 20A and the first member 10A in the previous embodiment is butt joint; however, the combination method of the second member 20A and the first member 10A in the present embodiment is lapping connect. That is, a first component connecting portion 24A of the second component 20A is combined with a top surface 16A of the first component 10A.

Moreover, when the centerline L1 of the first member is compared with the centerline L0 of the mold cavity of the mold group MA, the fixed core device C is used to position the inner ring portion 14A of the first member 10A correspondingly; of course, it also It can be positioned on the outer ring portion 13A (not shown) as in the previous embodiment or both.

In addition, the cavity portion of the mold set MB is relocated to the second mold M2B to facilitate positioning and/or molding.

Furthermore, as shown in Figures 9 to 12, another preferred embodiment of the manufacturing method of the multi-piece optical substrate of the present invention is also substantially the same as the previous embodiment, and its optical substrate 1B includes a first member 10B and a second member 20B, but the first member 10B further has a ring 30B covering its outer ring portion 13B.

Its difference mainly lies in: the fixed pistil part of the foregoing embodiment is taken its outer ring part, and the fixed pistil part of this embodiment locates its outer ring part and then takes an outer ring periphery 32B of this enveloping ring 30B, so that the central axis is positioned is located on the elements of the ring 30B.

In addition, the centerline L0 of the mold cavity used to locate the centerline L2 of the second member is offset from the centerline L1 of the first member parallel to each other for reference positioning, so another multi-piece optical substrate is obtained, the second The component centerline L2 is precisely formed at the relative position of the first component centerline L1.

And, its mold group MB can add another mold core M3B.

Based on the above, the present invention can be produced by the aforementioned manufacturing method, or other manufacturing methods not limited to the aforementioned, and provides a multi-piece optical substrate, which includes:

A first component 10 , 10A, 10B, the first component 10 , 10A, 10B has a central hole 11 and a stamen defining a first component centerline L1 .

A second member 20, 20A, 20B is connected to the central hole 11 of the first member 10, 10A, 10B and is solidified and adjacent to the first member 10, 10A, 10B, and defines a second member centerline L2 , the centerline L2 of the second member is determined and acquired with reference to the stamen portion of the first member 10 , 10A, 10B.

Of course, the present invention can provide a lens module 100, which is equipped with a multi-piece volume optical base material 1C, the first member 10C of the multi-piece volume optical base material 1C is installed on the cylinder body, and can be installed with other lenses and There are various arrangement sequences, and the second member 20C is axially corresponding to a light-transmitting hole of the barrel body, as shown in FIG. 13 .

In the description and examples of the above embodiments of the present invention, various manufacturing steps, materials used, and element structures can be replaced and matched; in addition, each embodiment can be changed to the following and combinations thereof:

Firstly, the first component has an outer ring part and an inner ring part, wherein the stamen part is the inner ring part.

Next, the filling step of the plastic material is done by dispensing, injection or extrusion.

In addition, except that the second member needs to be a light-transmitting material, the first member can be substantially a light-transmitting material, a semi-transparent material or an opaque material, so that the material can be used more widely, and through its Cost saving is achieved; if the first component is made of a translucent material or an opaque material, various preset light shielding effects can be provided. The material of the first member and the second member can be made of high temperature resistant resin besides glass, for example, it can withstand temperatures as high as 300°C to 350°C, and both of them can be produced by injection molding.

In addition, besides being a convex mirror, the second member can also be a concave mirror.

Furthermore, in addition to being coincident with or parallel to the centerline of the first member of the first member as mentioned above, the centerline of the mold cavity of the mold set can also form a preset angle with each other.

In addition, in addition to being overlapped or parallel to the first component centerline of the first component, the second component centerline of the second component may also form a preset angle with each other.

Based on the above, after the description of the above embodiments of the present invention, it is possible to understand the multi-piece optical substrate and its manufacturing method of the present invention, which can use a predetermined position of a first member as a reference, and form a second member and connect it to the The first component makes an optical center of the second component refer to the datum of the first component, so that after the multi-piece optical substrate is assembled and combined with other components, it has an accurate optical center corresponding effect.

Finally, it must be stated again that the constituent elements disclosed in the foregoing embodiments of the present invention are only for illustration and are not intended to limit the scope of this case. The substitution or change of other equivalent elements should also be within the scope of the patent application of this case. covered.

Claims (15)

1. A method for manufacturing a multi-piece optical substrate, comprising the steps of: a) taking a first member having a central hole and a stamen defining a centerline of the first member; b) preparing a mold set, the mold set has a plastic filling space and constitutes a mold cavity centerline; placing the first member on the mold set, and the predetermined part of the first member contacts the plastic filling space; c) positioning the stamen portion of the first member so that the centerline of the first member is compared to the centerline of the mold cavity of the mold set; d) taking a transparent plastic material into the plastic filling space of the mold set, solidifying and forming the second member next to the first member to form an optical substrate; e) Opening the mold set and taking out the optical substrate. 2. The method for manufacturing a multi-piece optical substrate according to claim 1, wherein the first member has an outer ring portion and an inner ring portion, and the core portion is the outer ring portion or the inner ring portion . 3. The method for manufacturing a multi-piece optical substrate according to claim 1, wherein the centerline of the mold cavity of the mold set and the centerline of the first member of the first member are overlapped, parallel to each other or in an an angle. 4 . The method for manufacturing a multi-piece optical substrate according to claim 1 , 2 or 3, wherein the combination of the second member and the first member is butt joint or overlap joint. 5. The method for manufacturing a multi-piece optical substrate according to claim 1, 2 or 3, wherein the step of filling the plastic material is performed by dispensing, injection or extrusion. 6 . The manufacturing method of the multi-piece optical substrate according to claim 1 , 2 or 3 , wherein the first member further comprises a ring covering the outer ring portion of the first member. 7 . 7 . The method for manufacturing a multi-piece optical substrate according to claim 6 , wherein the central axis of the first member is positioned on the surrounding ring. 8 . 8. A multi-piece optical substrate, characterized in that it comprises: a first member having a central bore and a stamen defining a first member centerline; A second component, which is connected to the central hole of the first component and is solidified and adjacent to the first component, and defines a centerline of the second component, the centerline of the second component is centered on the stamen portion of the first component Determined and obtained based on the basis. 9 . The multi-piece optical substrate according to claim 8 , wherein the first member has an outer ring portion and an inner ring portion, and the core portion is the outer ring portion or the inner ring portion. 10. The multi-piece optical substrate according to claim 8, wherein the centerline of the second member of the second member and the centerline of the first member of the first member overlap, are parallel to each other, or are parallel to each other. an angle. 11. The multi-piece optical substrate according to claim 8, 9 or 10, wherein the combination of the second member and the first member is butt joint or overlap joint. 12 . The multi-piece optical substrate according to claim 8 , 9 or 10 , wherein the filling step of the plastic material is performed by dispensing, injection or extrusion. 13 . 13 . The multi-piece optical substrate according to claim 8 , 9 or 10 , wherein the first member further comprises a ring covering the outer ring portion of the first member. 14 . 14. The multi-piece optical substrate according to claim 13, wherein the central axis of the first member is positioned on the surrounding ring. 15. A lens module, which is equipped with the optical base material made by the manufacturing method of the multi-piece optical base material according to claim 1 or 2 or 3, or is equipped with the multi-piece optical base material according to claim 8 or 9 or 10. Bulk optical substrates.

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