CN113985599B - Transmission type optical switch, lighting device and electronic equipment - Google Patents
Transmission type optical switch, lighting device and electronic equipment Download PDFInfo
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- CN113985599B CN113985599B CN202111153164.4A CN202111153164A CN113985599B CN 113985599 B CN113985599 B CN 113985599B CN 202111153164 A CN202111153164 A CN 202111153164A CN 113985599 B CN113985599 B CN 113985599B
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The embodiment of the disclosure discloses a transmission type optical switch, a lighting device and electronic equipment, wherein the transmission type optical switch comprises a frame, and a channel is formed on the frame; a light shielding member suspended on the passage, the light shielding member being configured to open or close the passage; a stopper located in the passage and below the light shielding element; and a drive assembly, the drive assembly comprising: a connecting part arranged in the middle of the shading element; the driving device is connected with the frame at one end, and is connected with the connecting part at the other end, and can be bent and flattened; in a state that the driving device is bent, the stop block forms a block on part of the shading element so as to enable the shading element to rotate around the connecting part to open the channel.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of transmission type optical switches, and more particularly relates to a transmission type optical switch, a lighting device and electronic equipment.
Background
The MEMS transmission type optical switch is used for controlling the light passing rate. Therefore, it can be applied to many optical scenes. With the application of the MEMS transmission type optical switch, the MEMS transmission type optical switch with greatly reduced volume is widely applied to the fields of intelligent windows, intelligent car lamps, optical detection and the like.
Common ways to drive MEMS transmissive optical switches are electrostatic drive and electrothermal drive. When using electrothermal driving, a larger shading element can be provided to form a larger shading area.
However, the electrothermal driving device occupies large volume, is unfavorable for miniaturization of the MEMS transmission type optical switch, and has low light transmittance.
Disclosure of Invention
It is an object of the present disclosure to provide a new technical solution for a transmissive optical switch, a lighting device and an electronic apparatus.
According to a first aspect of the present disclosure, there is provided a transmissive optical switch comprising a frame formed with a channel; a light shielding member suspended on the passage, the light shielding member being configured to open or close the passage; a stopper located in the passage and below the light shielding element; and a drive assembly, the drive assembly comprising: a connecting part arranged in the middle of the shading element; the driving device is connected with the frame at one end, and is connected with the connecting part at the other end, and can be bent and flattened; in a state that the driving device is bent, the stop block forms a block on part of the shading element so as to enable the shading element to rotate around the connecting part to open the channel.
Optionally, two driving assemblies are included, and the two driving assemblies are symmetrically arranged relative to the shading element.
Optionally, a concave structure is formed on a side, close to the driving device, of the shading element, and the driving device and the connecting portion are located in the concave structure.
Optionally, the light shielding device comprises two driving components, wherein the two driving components are symmetrically arranged relative to the light shielding element, the light shielding element forms two concave structures, the two driving components are respectively positioned in the two concave structures, and the area of the light shielding element between the two concave structures is opposite to the stop block.
Optionally, the driving device is an electrothermal driving device or a piezoelectric driving device.
Optionally, the driving device comprises a heating element, a first material layer and a second material layer, wherein the first material layer and the second material layer are arranged layer by layer and are connected together, the heating element is connected with the first material layer and/or the second material layer, and the thermal expansion coefficients of the first material layer and the second material layer are different.
Optionally, the light shielding element includes a first functional layer and a second functional layer, where the first functional layer and the second functional layer are stacked and connected together, the first functional layer is made of a metal material, and the second functional layer is made of an inorganic nonmetallic material.
Optionally, the frame and the stop are formed as a unitary structure.
Optionally, the connecting portion is S-shaped.
Optionally, in the opened state, the shading element is attached to the side wall of the stop block.
Optionally, a plurality of the light shielding elements are included, and the plurality of the light shielding elements jointly cover the channel.
Optionally, in an initial state, the driving device is flattened to close the channel; after a voltage is applied to the driving device, the driving device bends to enable the shading element to rotate around the connecting part so as to open the channel.
Optionally, in an initial state, the driving device is bent, and the shading element is attached to the side wall of the stop block so as to open the channel; after a voltage is applied to the driving device, the driving device is flattened, so that the shading element rotates around the connecting part, and the shading element is in a horizontal state to close the channel.
According to a second aspect of the present disclosure, there is provided a lighting device comprising a light source and a transmissive optical switch, the transmissive optical switch being plural, the plural transmissive optical switches constituting a switch array, the switch array being opposite to the light source.
According to a third aspect of the present disclosure, there is provided an electronic apparatus including an apparatus body and a lighting device provided on the apparatus body.
Through the technical scheme of the transmission type optical switch, the volume of a driving assembly can be effectively reduced, the area proportion of a transmission type optical switch channel is improved, the miniaturization of the transmission type optical switch is facilitated, and the working efficiency of the transmission type optical switch is improved.
Other features of the present specification and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic structural diagram of a transmissive optical switch according to an embodiment of the disclosure.
Fig. 2 is a schematic structural diagram of the light shielding element in the transmissive optical switch in fig. 1 in different open states.
Fig. 3-5 are top views of a transmissive optical switch in an embodiment of the present disclosure.
Reference numerals illustrate:
1. a frame; 2. a channel; 3. a light shielding member; 4. A drive assembly; 101. a stop block; 102. a step structure; 103. a groove; 301. a recessed structure; 401. a driving device; 402. and a connecting part.
Detailed Description
Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present disclosure and are not to be construed as limiting the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
The features of the disclosure, both in the description and in the claims, may be expressed in terms of "first", "second", or in terms of comprising one or more of such features. In the description of the present disclosure, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present disclosure, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.
In the description of the present disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.
According to one embodiment of the present disclosure, referring to fig. 1-4, a transmissive optical switch is provided, comprising a frame 1. The transmission type optical switch is manufactured by adopting MEMS technology.
The frame 1 is used to support components in a transmissive optical switch. The frame 1 may be of semiconductor material. Silicon, silicon compounds such as silicon dioxide, silicon nitride and silicon carbide; germanium and gallium arsenide, piezoelectric crystals, and ceramic compounds are also possible.
The frame 1 is formed by removing unwanted material from the substrate by etching processes, i.e. dry etching processes and wet etching processes, to form the geometry of the frame 1 in the present disclosure.
The frame 1 is formed with a channel 2.
For example, the frame 1 encloses a cavity, which is a channel 2. The light source is arranged opposite to the transmissive optical switch and the light emitted by the light source propagates forward through the channel 2.
It is also possible that the side depressions of the frame 1 form channels 2.
The stopper 101, the stopper 101 is located in the passage 2, and is located below the light shielding member 3.
The position of the stopper 101 below the light shielding element 3 means that the stopper 101 is positioned at the front of the rotation direction of the light shielding element 3 when the light shielding element 3 is rotated during the bending or flattening process of the driving device 401.
In this way, a fulcrum can be provided for rotation of the light shielding element 3, so that the light shielding element 3 can be rotated with respect to the driving device 401.
According to one embodiment of the present disclosure, as shown in fig. 1, a stopper 101 protruding toward the passage 2 is provided on the frame 1. The frame 1 forms an integral structure with the stop 101.
During the manufacturing process, two grooves 103 may be formed in the side walls of the frame 1 to form a stopper 101 in the middle of the frame 1. The stop 101 is located between the two grooves 103 and extends into the channel 2.
Referring to fig. 2, fig. 2 is a longitudinal sectional view of the transmissive optical switch. On one side of the frame 1, a step structure 102 is formed by etching. The upper end of the step structure 102 is fixed with a driving component 4, and the lower end of the step structure 102 is a stop block 101.
In other embodiments of the present disclosure, the stopper 101 is a separate structure from the frame 1, and is two different structures formed separately.
The transmissive optical switch comprises a shading element 3. The light shielding element 3 is used to block light from the light source from propagating along the channel 2.
The shading element 3 is suspended on the channel 2. The shading element 3 is configured to open or close the channel 2. Referring to fig. 1 to 5, in the case where the passage 2 is closed, the light shielding member 3 is in a horizontal state and parallel to the surface of the frame 1, and the light is blocked by the light shielding member 3 and cannot continue to propagate. When the passage 2 is opened, the light shielding member 3 is retracted from the passage 2, and the light from the light source continues to propagate through the passage 2.
The transmission type optical switch comprises a driving component 4, wherein the driving component 4 comprises a connecting part 402 and a driving device 401 which are arranged in the middle of the shading element 3. One end of the driving device 401 is connected to the frame 1, and the other end of the driving device 401 is connected to the connection part 402.
For example, one end of the driving device 401 is fixed to the upper end of the step structure on the frame 1, and the other end of the driving device 401 drives the light shielding element to close or open the passage 2 through the connection part 402 connected thereto. Thereby turning on or off the transmissive optical switch.
For example, the driving device 401 is formed on the frame 1 by a MEMS process, and will not be described in detail herein.
The driving means 401 can be bent and flattened. When the driving device 401 is bent to drive the light shielding element 3 to move towards the inside of the channel, and when the driving device 401 continues to be bent to drive the light shielding element 3 to move towards the inside of the channel, the stop block 101 forms a block on part of the light shielding element 3, so that the light shielding element 3 rotates around the connecting part 402 to open the channel 2.
When the driving device 401 changes from bending to flattening, the driving device 401 drives the shading element 3 to move, the shading element 3 contacts with the stop block 101, and the stop block 101 serves as a fulcrum of the shading element 3 to enable the shading element 3 to rotate around the driving component 4 so that the shading element 3 covers the channel 2 to close the channel 2.
In this way, the driving force to open or close the passage 2 can be effectively reduced.
In addition, the light shielding element 3 in the present disclosure moves in the channel 2 to open or close the channel 2, which saves more space and is beneficial to miniaturization of the optical switch. The efficiency of the transmissive optical switch is increased.
Referring to fig. 2, fig. 2 is a schematic structural view of the shading element 3 in the transmission type optical switch in different opening states.
When the driving means 401 is in the flattened state, i.e. the first state in fig. 2, the transmissive optical switch is in the closed state. The shading element 3 is parallel to the surface of the frame 1, and light from the light source is blocked.
As shown in the second state in fig. 2: a set voltage is applied to the driving device 401, so that the driving device 401 is bent downward, thereby driving the light shielding element 3 to rotate downward. The stop 101 forms a stop for a part of the shading element 3, the shading element 3 contacting the edge of the stop 101.
As shown in the third state in fig. 2: when the driving device 401 continues to bend, the shading element 3 is supported by the edge of the stop block 101, and continues to rotate downwards to avoid the channel 2. Finally, the light shielding member 3 is attached to the side wall of the stopper 101. In this way, the shading element 3 is completely clear of the channel 2, and the luminous flux is maximized.
In some embodiments of the present disclosure, the drive 401 is an electrothermal drive 401 or a piezoelectric drive 401.
For example, the driving device 401 is an electrothermal driving device 401. The driving means 401 comprises a heating element, a first material layer and a second material layer, which are arranged one above the other and are connected together, the heating element being connected to the first material layer and/or the second material layer, the first material layer and the second material layer having different coefficients of thermal expansion.
According to one embodiment of the present disclosure, the first material layer of the driving device 401 is a metal, such as aluminum, copper, or platinum, and the second material layer is an inorganic non-metal, such as silicon dioxide, silicon nitride, or silicon carbide.
A heating element is also provided, which may be provided between the first material layer and the second material layer, or may be connected to only the first material layer, or to only the second material layer. The heating element is, for example, a resistor, such as platinum, titanium or tungsten, but may be other resistive materials sufficient to provide a heat source for the first material layer and the second material layer, and is not limited thereto. When the control unit applies a voltage to the resistor, the resistor generates heat to raise the temperature of the driving device 401.
The first material layer and the second material layer have different coefficients of thermal expansion, and when the temperature increases, the coefficient of thermal expansion of aluminum is higher, and the driving device 401 bends clockwise to drive the salt of the light shielding element 3 to bend clockwise. When the voltage applied to the resistor by the control unit is reduced, the driving device 401 is bent counterclockwise to drive the light shielding element 3 to bend counterclockwise until the light shielding element 3 returns to the horizontal position.
In some embodiments of the present disclosure, the driving device 401 is a piezoelectric drive, the first material layer is silicon dioxide, and the second material layer is a material having an inverse piezoelectric effect, such as a piezoelectric ceramic. When the control unit applies voltage to the piezoelectric ceramic, the piezoelectric ceramic deforms, and drives the driving device 401 to rotate clockwise so as to drive the shading element 3 to rotate clockwise to open the channel 2.
When the control unit reduces the voltage applied to the piezoelectric ceramic, the deformation of the piezoelectric ceramic is reduced, and the driving device 401 returns to the flattened state, so that the light shielding member 3 closes the passage 2.
In this way, the shading element 3 can be rotated to a set angle so that the transmission type light can be switched on to adapt to the requirements of the light quantity under different environments.
It will be appreciated that in the above embodiments, the first material layer may be formed by the first material layer or may be omitted. As long as the drive means can be made to form the desired curvature.
In some embodiments of the present disclosure, the driving means 401 is protruded outwardly to form the connection part 402. For example, the connection 402 is silicon dioxide.
The cross section along the axial direction of the connecting portion 402 is bar-shaped, or s-shaped.
Referring to fig. 1, 4 or 5, the connection part 402 is in the shape of a bar.
Referring to fig. 3, fig. 3 shows a transmissive optical switch with an s-shaped connection 402. By setting the cross section of the connection portion 402 to be s-shaped, the rotational spring coefficient of the connection portion 402 is reduced, so that the light shielding element 3 is easier to rotate around the connection portion 402, and simultaneously, the stress of the light shielding element 3 in response to the driving portion is relieved, thereby avoiding occurrence of damage to the light shielding portion due to excessive stress.
In some embodiments of the present disclosure, the light shielding element 3 includes a first functional layer and a second functional layer, which are stacked and connected together. The first functional layer is used for blocking light transmission, and is made of opaque material, such as metal, for example aluminum.
The second functional layer serves to increase the rigidity of the light shielding element 3. For example, an inorganic nonmetallic material such as silica.
The order in which the first functional layer and the second functional layer are stacked is not limited herein. It is also possible to provide only the first functional layer, so that the first functional layer can have a suitable rigidity while also blocking light propagation.
For example, the second functional layer protrudes outward to form the connection 402. The connection 402 is made of an inorganic non-metallic material, such as silicon-on-two or other materials.
In some embodiments of the present disclosure, in the initial state, both the driving device 401 and the light shielding element 3 are in a flattened state, so that the channel 2 is closed; after applying a voltage to the driving means 401, the driving means 401 bends to rotate the light shielding element 3 around the connection 402 to open the channel 2.
The initial state refers to a case where no voltage is applied to the driving device 401. That is, in the present embodiment, the transmission type optical switch is in the off state in the initial state, that is, the driving device 401 and the light shielding element 3 are both in the flattened state.
When a preset voltage is applied to the driving device 401, the driving device 401 can be deformed, so that the driving device 401 is gradually bent from a flattened state, and the light shielding element 3 is driven to rotate clockwise by taking the stop block 101 as a pivot point, so that the channel 2 is opened.
In some embodiments of the present disclosure, the initial state driving device 401 is in a bent state, the light shielding element 3 is attached to the side wall of the stop block 101, and the channel 2 is in an open state. After applying a voltage to the driving means 401, the driving means flattens out so that the shading element 3 rotates around the connecting portion, and finally is in a flattened state to close the channel.
The initial state is a state in which the transmissive optical switch is on. For example, the driving device 401 is in a curved state, the light shielding member 3 is attached to the side wall of the stopper 101, and the transmission type optical switch is in a maximally opened state.
After a preset voltage is applied to the driving device 401, the driving device 401 is gradually flattened, so as to drive the shading element 3 to rotate anticlockwise. When the light shielding member 3 rotates counterclockwise, the light shielding member contacts the stopper 101 and rotates with respect to the driving device 401 about the stopper 101 as a fulcrum.
Example 1
Referring to fig. 1 and 3, fig. 1 is a top view of a transmissive optical switch in one embodiment of the present disclosure. There is provided a transmissive optical switch comprising a frame 1, the frame 1 being formed with a channel 2. The frame 1 is provided with a stop 101 protruding towards the channel 2.
The light shielding element 3, the light shielding element 3 comprises an aluminum layer for preventing light rays from passing through. A silicon layer or an oxide layer is laminated under the aluminum layer to provide rigidity to the light shielding member 3.
Two drive assemblies 4 are also included, the two drive assemblies 4 being symmetrically arranged with respect to the shading element 3.
The side of the shading element 3 close to the driving means 401 forms a recess structure 301, the driving means 401 and the connecting portion 402 being located inside the recess structure 301.
As shown in fig. 1 and 3, two concave structures 301 are formed on one side of the light shielding element 3 near the driving device 401, and two driving components 4 are respectively located in the two concave structures 301, and the light shielding element 3 is located in a region between the two concave structures 301 and is opposite to the stop block 101.
The region of the light shielding member 3 opposite to the stopper 101 forms an overlapping region (not shown in the drawings), and the position where the connection portion 402 is connected to the light shielding member 3 is disposed apart from the overlapping region. The driving device 401 and the connection portion 402 are integrally formed with the light shielding member 3.
And a control unit (not shown in the figure) which is electrically and communicatively connected with the transmission type optical switch.
When the driving means 401 is in a curved state, the transmissive optical switch is in an on state.
A set voltage is applied to the driving device 401 so that when the driving device 401 is flattened upward, the light shielding element 3 is driven to rotate counterclockwise. The stop 101 forms a stop for a part of the shading element 3, the shading element 3 contacting the edge of the stop 101.
When the driving device 401 continues to be flattened upwards, the shading element 3 is supported by the edge of the stop block 101 and continues to rotate anticlockwise. Finally, the shading element 3 is in a horizontal state, parallel to the surface of the frame 1, light from the light source is blocked, and the transmissive optical switch is turned off.
< example two >
Referring to fig. 1 and 3, fig. 1 is a top view of a transmissive optical switch in one embodiment of the present disclosure. There is provided a transmissive optical switch comprising a frame 1, the frame 1 being formed with a channel 2. The frame 1 is provided with a stop 101 protruding towards the channel 2.
The light shielding element 3, the light shielding element 3 comprises an aluminum layer for preventing light rays from passing through. A silicon layer or an oxide layer is laminated under the aluminum layer to provide rigidity to the light shielding member 3.
Two drive assemblies 4 are also included, the two drive assemblies 4 being symmetrically arranged with respect to the shading element 3.
The side of the shading element 3 close to the driving means 401 forms a recess structure 301, the driving means 401 and the connecting portion 402 being located inside the recess structure 301.
As shown in fig. 1 and 3, two concave structures 301 are formed on one side of the light shielding element 3 near the driving device 401, and two driving components 4 are respectively located in the two concave structures 301, and the light shielding element 3 is located in a region between the two concave structures 301 and is opposite to the stop block 101.
The region of the light shielding member 3 opposite to the stopper 101 forms an overlapping region (not shown in the drawings), and the position where the connection portion 402 is connected to the light shielding member 3 is disposed apart from the overlapping region. The driving device 401 and the connection portion 402 are integrally formed with the light shielding member 3.
And a control unit (not shown in the figure) which is electrically and communicatively connected with the transmission type optical switch.
The driving device 401 is initially bent downward by the attractive force, thereby driving the light shielding member 3 to rotate downward. The stopper 101 partially blocks the light shielding element 3, and the light shielding element 3 contacts the edge of the stopper 101 and continues to rotate clockwise with the edge of the stopper 101 as a support. Finally, the light shielding element 3 is attached to the side wall of the stopper 101, and the passage 2 is in an opened state.
When a set voltage is applied to the driving device 401, the driving device 401 is flattened upwards, so that the shading element 3 is driven to rotate and finally parallel to the surface of the frame 1 of the channel 2, and light from the light source is blocked.
Example III
Referring to fig. 4, fig. 4 is a schematic top view of a transmissive optical switch according to another embodiment of the present disclosure. There is provided a transmissive optical switch comprising a plurality of light shielding elements 3, the light shielding elements 3 together covering a channel 2.
The plurality of light shielding elements 3 are arranged in parallel, and the plurality of light shielding elements 3 can be integrally formed or have a split structure. The light shielding element 3 in this embodiment is of a split structure.
Two symmetrical concave structures are formed on one side of each shading element 3 close to the stop block 101, and the driving device 401 is arranged in the concave structures. The end of the same driving device 401 extends outwards perpendicularly to the connecting portion 402 of the driving device 401. The driving device 401 is connected with the middle part of the connecting part 402, and two ends of the connecting part 402 are positioned in the concave structure and are connected with two adjacent shading elements 3.
In this way, a plurality of driving devices 401 can bend at the same angle at the same time, so that the shading elements 3 are driven to realize linkage, and the transmission type optical switch is jointly turned on or off.
It is also possible, see fig. 5, that every two driving devices 401 drive one shading element 3, in such a way that an individual control of the shading element 3 by the control unit can be achieved. So as to realize different angles of rotation of the shading element 3 and adapt to luminous flux requirements of different situations.
The present disclosure also provides a lighting device including a light source and a transmissive optical switch, the transmissive optical switch being a plurality of, the plurality of transmissive optical switches forming a switch array, the switch array being opposite to the light source.
Light from the light source propagates through the channel 2 and the control unit passes through the drive assembly 4 to achieve different angles of rotation of the shading elements.
The disclosure also provides an electronic device, which comprises a device body and a lighting device, wherein the lighting device is arranged on the device body. To provide a device with a flux-adjustable illumination. The electronic equipment can be traffic equipment such as electric automobiles, electric bicycles, high-speed rails or subways and the like. And the intelligent device can also be an intelligent device, such as an electric curtain, an optical detector and the like.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. A transmission-type optical switch, characterized in that: comprising
A frame formed with a channel;
a light shielding member suspended on the passage, the light shielding member being configured to open or close the passage;
a stopper located in the passage and below the light shielding element; and
A drive assembly, the drive assembly comprising:
a connecting part arranged in the middle of the shading element; and
One end of the driving device is connected with the frame, the other end of the driving device is connected with the connecting part, and the driving device can be bent and flattened;
in a state that the driving device is bent, the stop block forms a block on part of the shading element so as to enable the shading element to rotate around the connecting part to open the channel.
2. The transmissive optical switch of claim 1, wherein: the light shielding device comprises two driving assemblies, wherein the two driving assemblies are symmetrically arranged relative to the light shielding element.
3. The transmissive optical switch of claim 1, wherein: a concave structure is formed on one side, close to the driving device, of the shading element, and the driving device and the connecting portion are located in the concave structure.
4. A transmissive optical switch as claimed in claim 3, wherein: the light shielding device comprises two driving assemblies, wherein the two driving assemblies are symmetrically arranged relative to the light shielding element, the light shielding element forms two concave structures, the two driving assemblies are respectively positioned in the two concave structures, and the area, between the two concave structures, of the light shielding element is opposite to the stop block.
5. The transmissive optical switch of any of claims 1-4, wherein: the driving device is an electrothermal driving device or a piezoelectric driving device.
6. The transmissive optical switch of any of claims 1-4, wherein: the driving device comprises a heating element, a first material layer and a second material layer, wherein the first material layer and the second material layer are arranged in a layer-by-layer mode and are connected together, the heating element is connected with the first material layer and/or the second material layer, and the thermal expansion coefficients of the first material layer and the second material layer are different.
7. The transmissive optical switch of any of claims 1-4, wherein: the shading element comprises a first functional layer and a second functional layer, wherein the first functional layer and the second functional layer are arranged in a laminated mode and are connected together, the first functional layer is made of a metal material, and the second functional layer is made of an inorganic nonmetallic material.
8. The transmissive optical switch of any of claims 1-4, wherein: the frame and the stop block are formed into an integral structure.
9. The transmissive optical switch of any of claims 1-4, wherein: the connecting part is S-shaped.
10. The transmissive optical switch of any of claims 1-4, wherein: in the opened state, the shading element is attached to the side wall of the stop block.
11. The transmissive optical switch of any of claims 1-4, wherein: the light shielding device comprises a plurality of light shielding elements, and the light shielding elements jointly cover the channels.
12. The transmissive optical switch of any of claims 1-4, wherein: in an initial state, the driving device is flattened to close the channel;
after a voltage is applied to the driving device, the driving device bends to enable the shading element to rotate around the connecting part so as to open the channel.
13. The transmissive optical switch of any of claims 1-4, wherein: in an initial state, the driving device is bent, and the shading element is attached to the side wall of the stop block so as to open the channel;
after a voltage is applied to the driving device, the driving device is flattened, so that the shading element rotates around the connecting part, and the shading element is in a horizontal state to close the channel.
14. A lighting device, characterized by: comprising a light source and a transmissive optical switch according to any of claims 1-13, said transmissive optical switch being a plurality, a plurality of said transmissive optical switches constituting a switch array, said switch array being opposite to said light source.
15. An electronic device, characterized in that: comprising an apparatus body and the lighting device according to claim 14, said lighting device being provided on said apparatus body.
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| CN202111153164.4A CN113985599B (en) | 2021-09-29 | 2021-09-29 | Transmission type optical switch, lighting device and electronic equipment |
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| CN202111153164.4A CN113985599B (en) | 2021-09-29 | 2021-09-29 | Transmission type optical switch, lighting device and electronic equipment |
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| CN109814252A (en) * | 2019-04-02 | 2019-05-28 | 华域视觉科技(上海)有限公司 | Transmissive MEMS chips, MEMS lighting systems and automobiles |
| CN116679364A (en) * | 2023-06-12 | 2023-09-01 | 中国科学院上海技术物理研究所 | Energy-saving glass based on thermosensitive self-adaptive micromirror, energy-saving glass window and manufacturing method |
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