CN113376926A - Switchable liquid crystal optical device - Google Patents
Switchable liquid crystal optical device Download PDFInfo
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- CN113376926A CN113376926A CN202110690130.2A CN202110690130A CN113376926A CN 113376926 A CN113376926 A CN 113376926A CN 202110690130 A CN202110690130 A CN 202110690130A CN 113376926 A CN113376926 A CN 113376926A
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- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
- G02B30/28—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays involving active lenticular arrays
Abstract
The embodiment of the invention discloses a switchable liquid crystal optical device. The optical structure layer is positioned between the first substrate and the second substrate; a liquid crystal material between the optical structure layer and the first substrate; the electrode layer is positioned between the first substrate and the liquid crystal material, or between the second substrate and the optical structure layer, or between the optical structure layer and the liquid crystal material, and comprises an insulating layer and electrodes with different polarities, and the electrodes are used for generating electric fields on the first substrate, the second substrate and the optical structure layer; wherein, when the electrode layer is energized, the liquid crystal material is stretched along the direction of the electric field for modulating light passing through the liquid crystal material. The switchable liquid crystal optical device provided by the invention can improve the light transmittance, thereby improving the light utilization rate and reducing the power consumption.
Description
Technical Field
The embodiment of the invention relates to the field of naked eye stereoscopic display, in particular to a switchable liquid crystal optical device.
Background
In the existing naked eye three-dimensional display technology, the switchable liquid crystal lens technology has outstanding advantages, the switchable liquid crystal lens type naked eye three-dimensional display system has no loss of brightness and better three-dimensional effect, and can realize free switching of 2D/3D, so that the switchable liquid crystal lens type naked eye three-dimensional display system is the mainstream technical direction of naked eye three-dimensional display in the future. However, the currently implemented 2D/3D conversion naked eye stereoscopic display lenticular liquid crystal lens needs to set transparent electrode layers on the spacer substrate and the lens substrate respectively for generating an electric field between the spacer substrate and the lens, and the free switching of 2D/3D is implemented by applying or not applying voltage to the transparent electrodes.
Disclosure of Invention
The embodiment of the invention provides a switchable liquid crystal optical device, which reduces the light reflectivity of the optical device and improves the light transmissivity, thereby achieving the technical effects of improving the light utilization rate and reducing the power consumption.
An embodiment of the present invention provides a switchable liquid crystal optical device, including:
the optical structure layer is positioned between the first substrate and the second substrate;
a liquid crystal material between the optical structure layer and the first substrate;
the electrode layer is positioned between the first substrate and the liquid crystal material, or between the second substrate and the optical structure layer, or between the optical structure layer and the liquid crystal material, and comprises an insulating layer and electrodes with different polarities, and the electrodes are used for generating electric fields on the first substrate, the second substrate and the optical structure layer;
wherein, when the electrode layer is energized, the liquid crystal material is stretched along the direction of the electric field for modulating light passing through the liquid crystal material.
The embodiment of the invention provides a switchable liquid crystal optical device, which comprises a first substrate, a second substrate and an optical structure layer with an optical functional structure surface, wherein the optical structure layer is positioned between the first substrate and the second substrate; a liquid crystal material between the optical structure layer and the first substrate; the electrode layer is positioned between the first substrate and the liquid crystal material, between the second substrate and the optical structure layer or between the optical structure layer and the liquid crystal material, and comprises an insulating layer and electrodes with different polarities, and the electrodes are used for generating an electric field on the first substrate, the second substrate or the optical structure layer; when the electrode layer is electrified, the liquid crystal material stretches along the direction of the electric field and is used for modulating light passing through the liquid crystal material, the electric field is generated only through a single transparent electrode plate, the number of transparent media needing to penetrate through a light path is reduced, the reflectivity of the columnar liquid crystal lens device to the light is reduced, the light transmittance is improved, and the technical effects of improving the light utilization rate and reducing the power consumption are achieved.
The above summary of the present invention is merely an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description in order to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a switchable liquid crystal optical device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another switchable liquid crystal optical device according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a liquid crystal material in a form change under an electric field generated by a switchable liquid crystal optical device according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a morphological change of a further liquid crystal material under an electric field generated by a switchable liquid crystal optical device according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram illustrating an arrangement position spacing of electrodes in an electrode layer according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a switchable liquid crystal optical device with different layer electrode layers according to a second embodiment of the present application;
FIG. 7 is a schematic diagram of a switchable liquid crystal optical device with different layer electrode layers according to the second embodiment of the present application;
fig. 8 is a schematic diagram illustrating a morphological change of a liquid crystal material under an electric field generated by a switchable liquid crystal optical device with electrode layers at different layers according to a second embodiment of the present disclosure;
fig. 9 is a schematic diagram of a morphological change of another liquid crystal material under an electric field formed by a switchable liquid crystal optical device with different layer electrode layers according to the second embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example one
Fig. 1 is a schematic diagram of a switchable liquid crystal optical device structure provided in a first embodiment of the present invention, and referring to fig. 1, the switchable liquid crystal optical device structure includes:
a first substrate 110, a second substrate 120 and an optical structure layer 130 with an optical functional structure surface, wherein the optical structure layer 130 is located between the first substrate 110 and the second substrate 120;
a liquid crystal material 140 between the optical structure layer 130 and the first substrate 110;
an electrode layer 150 between the first substrate 110 and the liquid crystal material 140, or between the second substrate 120 and the optical structure layer 130, or between the optical structure layer 130 and the liquid crystal material 140, the electrode layer including an insulating layer 151 and electrodes 152 of different polarities for forming an electric field between the first substrate 110 and the second substrate 120;
wherein when the electrode layer is energized 150, the liquid crystal material 140 is stretched along the direction of the electric field for modulating the light passing through the liquid crystal material 140
As shown in fig. 1, the first substrate 110 may be a spacer substrate, the spacer substrate may be made of glass or other transparent materials or transparent flexible substrates, the second substrate 120 may be a lens substrate for carrying lenses, and the material of the lens substrate and the material of the spacer substrate may also be made of glass or other transparent materials or transparent flexible substrates. The optical structure layer 130 with the optical functional structure surface in fig. 1 is a lenticular lens, and may also be other optical structures capable of modulating transmitted light, such as optical lenses with other shapes, and the material of the optical structure layer 130 may be an organic resin material. The liquid crystal material 140 may be a blue phase liquid crystal material. In fig. 1, the electrode layer 150 is located between the second substrate 120 and the optical structure layer 130, the electrode layer may be a plane or a curved surface parallel to the substrates, and includes an insulating layer 151 and an electrode 152, the insulating layer 151 may be silicon dioxide, silicon oxide, or other transparent organic materials, the electrode 152 may be an ITO electrode, or may be other transparent conductive materials, and the electrodes 152 with different polarities in fig. 1 are all located on the same plane in the electrode layer 150.
When there is no pressure difference between the first substrate 110 and the second substrate 120, as shown in fig. 1, the blue phase liquid crystal is isotropic, has the same refractive index in each direction, and is spherical, and at this time, the refractive index of the blue phase liquid crystal is matched with the refractive index of the organic resin material of the optical structure layer 130 in any direction, so that the lens effect is not generated when viewing at a large angle in the 2D state.
Fig. 2 is a schematic diagram of another switchable liquid crystal optical device structure provided in the first embodiment of the present invention, referring to fig. 2, the switchable liquid crystal optical device structure includes:
the liquid crystal display panel comprises a first substrate 210, a second substrate 220, an optical structure layer 230, a liquid crystal material 240 and an electrode layer 250, wherein the electrode layer 250 comprises an insulating layer 251 and electrodes 252 with different polarities.
The switchable liquid crystal optical device is identical in composition to the switchable liquid crystal optical device shown in fig. 1, except that the electrode layer 250 in fig. 2 is located between the first substrate 210 and the liquid crystal material 240, attached to the lower surface of the first substrate.
Optionally, the electrode layer may be further attached to a surface of the optical structure layer between the optical structure layer and the liquid crystal material, and when the optical structure layer is a lenticular lens, the electrode layer may be attached to an upper surface of the lenticular lens, so as to generate an electric field.
By adopting the technical scheme, the single-layer electrode layer is arranged on the first substrate or the second substrate, and the electric field is generated through the single-layer electrode layer, so that the material cost is saved, the reflectivity is reduced, and the light transmittance is improved, thereby improving the light utilization rate and reducing the power consumption.
Optionally, the planar electric field is used for stretching the liquid crystal material in a direction parallel to the first substrate and the second substrate
The planar electric field is generated by electrodes with different polarities on the same plane, and the planar electric field can be formed on the plane.
As shown in fig. 3, which is a schematic diagram illustrating a change in form of a liquid crystal material in the switchable liquid crystal optical device structure shown in fig. 1 under an electric field formed by the switchable liquid crystal optical device, when a voltage difference exists between the first substrate and the second substrate, the liquid crystal material is stretched along a plane of the electrode layer, that is, a direction of a planar electric field, and a refractive index distribution of the blue phase liquid crystal is similar to an ellipsoid, so that a refractive index difference is generated between the liquid crystal material and the optical structure layer in a horizontal direction, thereby forming a lens effect to modulate the relevant light to a corresponding position. Therefore, whether the electrode layer generates an electric field or not can make the liquid crystal material keep a spherical shape or stretch, thereby realizing free switching of 2D/3D.
As shown in fig. 4, which is a schematic diagram of the liquid crystal material in the alternative switchable liquid crystal optical device structure shown in fig. 2 showing the change in morphology of the liquid crystal material under the electric field formed by the switchable liquid crystal optical device, the stretching result in fig. 4 under the planar electric field is the same as that in fig. 3.
Optionally, the electrodes with different polarities are arranged on the electrode layer at intervals, and the distance between every two adjacent electrodes is a preset distance.
Optionally, the lower limit of the preset distance is the length of the electrode, and the upper limit is four times the length of the electrode.
Optionally, the electrodes with different polarities are arranged on a first layer surface of the electrode layer to form a planar electric field, and the first layer surface is parallel to upper and lower layer surfaces of the electrode layer.
Optionally, in the electrode layer, an electrode perpendicular to the center of the optical structure layer is a positive electrode; in the electrode layer, an electrode perpendicular to the joint of the optical structure layers is a negative electrode.
Optionally, in the electrode layer, an electrode perpendicular to the center of the optical structure layer is a negative electrode; in the electrode layer, an electrode perpendicular to the joint position of the optical structure layers is a positive electrode.
In the electrode layer, the electrodes with different polarities are positioned on the same plane, the first plane is parallel to the upper layer surface and the lower layer surface of the electrode layer, the electrodes with different polarities are arranged at intervals according to a preset distance, and the polarities of the two adjacent electrodes are different.
Alternatively, as shown in fig. 5, when the period length of the lenticular lens is c, the length of the electrode is a, and the preset distance b may be any value between a and 4 a. The electrode perpendicular to the center of the lenticular lens is a positive (negative) electrode, and the electrode perpendicular to the intersection of the lenticular lens is a negative (positive) electrode.
According to the technical scheme, the electrode layer is arranged between the first substrate and the liquid crystal material or between the second substrate and the optical structure layer or between the optical structure layer and the liquid crystal material, a planar electric field is generated, when the electrode layer is electrified, the liquid crystal material stretches along the direction of the electric field and is used for modulating light passing through the liquid crystal material, the electric field is generated only through a single transparent electrode plate, the quantity of transparent media needing to penetrate through a light path is reduced, the reflectivity of the columnar liquid crystal lens device to light is reduced, the light transmittance is improved, the light utilization rate is improved, and the technical effect of reducing power consumption is achieved.
Example two
Fig. 6 is a schematic diagram of a switchable liquid crystal optical device structure with different layer electrode layers according to a first embodiment of the present invention, and referring to fig. 6, the switchable liquid crystal optical device structure includes:
the liquid crystal display panel comprises a first substrate 610, a second substrate 620, an optical structure layer 630, a liquid crystal material 640 and an electrode layer 650, wherein the electrode layer 650 further comprises electrodes 652 and insulating layers 651 with different polarities, as shown in fig. 6, the electrodes 652 with different polarities are respectively located at different layers in the electrode layer 650, the electrode with positive polarity is located in one plane, the electrode with negative polarity is located in one plane, and the two planes are parallel to the upper and lower surfaces of the electrode layer.
Fig. 7 is a schematic diagram of another switchable liquid crystal optical device structure with different layer electrode layers provided in the first embodiment of the present invention, referring to fig. 7, the switchable liquid crystal optical device structure includes:
the liquid crystal display panel comprises a first substrate 710, a second substrate 720, an optical structure layer 730, a liquid crystal material 740 and an electrode layer 750, wherein the electrode layer 750 further comprises electrodes 752 and insulating layers 751 with different polarities, as shown in fig. 7, the electrodes 752 with different polarities are respectively positioned at different levels in the electrode layer 750, the electrode with positive polarity is positioned in one plane, the electrode with negative polarity is positioned in the other plane, and the two planes are parallel to the upper surface and the lower surface of the electrode layer 750.
The switchable liquid crystal optical device is identical in composition in structure to the switchable liquid crystal optical device shown in fig. 6, except that the electrode layer 750 of the switchable liquid crystal optical device of fig. 7 is located between the optical structure layer 730 and the second substrate 720.
In the switchable liquid crystal optical device shown in fig. 6 and 7, the arrangement of the electrodes of different polarities in the electrode layers in the vertical direction of the reference lenticular lens is the same as that of the switchable liquid crystal optical device shown in fig. 1 and 2.
Optionally, the electrodes with different polarities are arranged on the electrode layer at intervals, and the distance between every two adjacent electrodes is a preset distance.
Optionally, the lower limit of the preset distance is the length of the electrode, and the upper limit is four times the length of the electrode.
Optionally, in the electrode layer, an electrode perpendicular to the center of the optical structure layer is a positive electrode; in the electrode layer, an electrode perpendicular to the joint of the optical structure layers is a negative electrode.
Optionally, in the electrode layer, an electrode perpendicular to the center of the optical structure layer is a negative electrode; in the electrode layer, an electrode perpendicular to the joint position of the optical structure layers is a positive electrode.
On the basis of the above embodiment, optionally, the electrodes with different polarities are respectively arranged on the second layer surface and the third layer surface of the electrode layer to form a fringe electric field, and the second layer surface and the third layer surface are parallel to the upper layer surface and the lower layer surface of the electrode layer.
The plane of the positive (negative) electrode is the second plane, the plane of the negative (positive) electrode is the third plane, and the second plane and the third plane are parallel to the upper layer surface and the lower layer surface of the electrode layer.
On the basis of the above embodiment, optionally, the fringe electric field is used to stretch the liquid crystal material in a direction between the two different polarity electrodes closest to each other on the second layer surface and the third layer surface.
Alternatively, as shown in fig. 5, when the period length of the lenticular lens is c, the length of the electrode is a, and the preset distance b may be any value between a and 4 a. The electrode perpendicular to the center of the lenticular lens is a positive (negative) electrode, and the electrode perpendicular to the intersection of the lenticular lens is a negative (positive) electrode.
As shown in fig. 8, which is a schematic diagram of a form change of a liquid crystal material in the switchable liquid crystal optical device structure of the different-layer electrode layer shown in fig. 6 under an electric field formed by the switchable liquid crystal optical device, a positive electrode and a negative electrode are respectively located at different layers in the electrode layers, so as to form a fringe electric field, and the liquid crystal material is stretched along a direction between two nearest electrodes with different polarities on two planes where the positive electrode and the negative electrode are located under the influence of the fringe electric field.
Fig. 9 is a schematic diagram showing the change in the liquid crystal material in the alternative switchable liquid crystal optical device structure of fig. 7 under the electric field generated by the switchable liquid crystal optical device, and the stretching result in fig. 9 under the fringe electric field is the same as that in fig. 8.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A switchable liquid crystal optical device, comprising:
the optical structure layer is positioned between the first substrate and the second substrate;
a liquid crystal material between the optical structure layer and the first substrate;
the electrode layer is positioned between the first substrate and the liquid crystal material, or between the second substrate and the optical structure layer, or between the optical structure layer and the liquid crystal material, and comprises an insulating layer and electrodes with different polarities, and the electrodes are used for generating an electric field on the first substrate, the second substrate or the optical structure layer;
wherein, when the electrode layer is energized, the liquid crystal material is stretched along the direction of the electric field for modulating light passing through the liquid crystal material.
2. The device of claim 1, wherein the liquid crystal material is a blue phase liquid crystal.
3. The device of claim 1, wherein the electrodes of different polarities are spaced apart on the electrode layer by a predetermined distance.
4. The device of claim 3, wherein the preset pitch has a lower limit of the length of the electrodes and an upper limit of four times the length of the electrodes.
5. The device of claim 3, wherein the electrodes of different polarity are arranged to form a planar electric field on a first level of the electrode layer, the first level being parallel to the upper and lower levels of the electrode layer.
6. The device of claim 3, wherein the electrodes of different polarities are arranged on second and third layers of the electrode layer respectively to form fringe electric fields, and the second and third layers are parallel to the upper and lower layers of the electrode layer.
7. The device according to claim 5 or 6, wherein in the electrode layer, an electrode perpendicular to a position at the center of the optical structure layer is a positive electrode; in the electrode layer, an electrode perpendicular to the joint of the optical structure layers is a negative electrode.
8. The device according to claim 5 or 6, wherein in the electrode layer, an electrode perpendicular to a position at the center of the optical structure layer is a negative electrode; in the electrode layer, an electrode perpendicular to the joint position of the optical structure layers is a positive electrode.
9. The device of claim 5, wherein the in-plane electric field is configured to stretch the liquid crystal material in a direction parallel to the first and second substrates.
10. The device of claim 6, wherein the fringing electric field is configured to stretch the liquid crystal material in a direction between the second layer and the nearest two different polarity electrodes on the third layer.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690130.2A CN113376926A (en) | 2021-06-22 | 2021-06-22 | Switchable liquid crystal optical device |
| CN202280002545.9A CN115087910A (en) | 2021-06-22 | 2022-03-07 | Switchable liquid crystal optical device |
| DE212022000121.4U DE212022000121U1 (en) | 2021-06-22 | 2022-03-07 | Switchable optical liquid crystal component |
| PCT/CN2022/079486 WO2022267545A1 (en) | 2021-06-22 | 2022-03-07 | Switchable liquid crystal optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110690130.2A CN113376926A (en) | 2021-06-22 | 2021-06-22 | Switchable liquid crystal optical device |
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| CN113376926A true CN113376926A (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110690130.2A Withdrawn CN113376926A (en) | 2021-06-22 | 2021-06-22 | Switchable liquid crystal optical device |
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| Country | Link |
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| CN (1) | CN113376926A (en) |
| WO (1) | WO2022267545A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267545A1 (en) * | 2021-06-22 | 2022-12-29 | 纵深视觉科技(南京)有限责任公司 | Switchable liquid crystal optical device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879911B (en) * | 2012-04-24 | 2015-10-21 | 上海群英软件有限公司 | 2d/3d switchable display device |
| CN104122712B (en) * | 2013-04-28 | 2017-09-29 | 京东方科技集团股份有限公司 | A kind of blue-phase liquid crystal display panel and blue phase liquid crystal display |
| CN205281087U (en) * | 2016-01-08 | 2016-06-01 | 京东方科技集团股份有限公司 | Optical modulation ware, backlight module and display device |
| CN111830756B (en) * | 2019-04-19 | 2022-02-01 | 京东方科技集团股份有限公司 | Liquid crystal lens and liquid crystal glasses |
| CN113376926A (en) * | 2021-06-22 | 2021-09-10 | 纵深视觉科技(南京)有限责任公司 | Switchable liquid crystal optical device |
-
2021
- 2021-06-22 CN CN202110690130.2A patent/CN113376926A/en not_active Withdrawn
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2022
- 2022-03-07 WO PCT/CN2022/079486 patent/WO2022267545A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267545A1 (en) * | 2021-06-22 | 2022-12-29 | 纵深视觉科技(南京)有限责任公司 | Switchable liquid crystal optical device |
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Application publication date: 20210910 |