CN108873556A - Compound liquid-crystal device for light beam deflection - Google Patents
Compound liquid-crystal device for light beam deflection Download PDFInfo
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- CN108873556A CN108873556A CN201811026899.9A CN201811026899A CN108873556A CN 108873556 A CN108873556 A CN 108873556A CN 201811026899 A CN201811026899 A CN 201811026899A CN 108873556 A CN108873556 A CN 108873556A
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- Prior art keywords
- liquid crystal
- liquid
- film
- dielectric film
- polarization gratings
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Classifications
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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
- G02F1/292—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 by controlled diffraction or phased-array beam steering
-
- 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
- G02F1/01—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 intensity, phase, polarisation or colour
- G02F1/13—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 intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
Abstract
The invention discloses the compound liquid-crystal devices deflected for light beam, including：Liquid crystal cell, dielectric film and the liquid crystal polarization gratings of adjustable liquid crystal half-wave piece；The liquid crystal cell, for controlling the direction of rotation of incident circularly polarized light by automatically controlled switching；The liquid crystal polarization gratings, for being deflected to the circularly polarized light after the liquid crystal cell；The liquid crystal cell and the liquid crystal polarization gratings share a glass substrate；The dielectric film is plated on the surface of the liquid crystal cell, and the liquid crystal polarization gratings are attached on the dielectric film；The dielectric film transmits the operation wavelength of the compound liquid-crystal device, and reflects light orientation exposure wavelength.Compound liquid-crystal device of the invention, it is compact-sized, thickness is smaller, improve the optical loss characteristic of entire light deflection, and the light orientation structure inside the liquid crystal cell of adjustable liquid crystal half-wave piece can be prevented in the fabrication process by secondary erasable.
Description
Technical field
The present invention relates to optical device fields, in particular to the compound liquid-crystal device for light beam deflection.
Background technique
Liquid crystal polarization gratings as a kind of novel beam deflection controller part, have deflection angle is big, diffraction efficiency is high,
It is small in size, light-weight, low in energy consumption, can multi-disc cascade carry out it is automatically controlled scanning etc. excellent characteristics, laser electric scanning, photoelectronic imaging with
The fields such as detection, target pointing, laser sensing and space communication have important application value.
It is general by the way of multi-disc liquid crystal polarization gratings stacking when current liquid crystal polarization gratings are deflected for light beam,
Realize the automatically controlled scanning of multiple angles.With the increase of deflection angle number Q, the piece number N that liquid crystal polarization gratings stack also with
Increase, the quantitative relationship between them is：Q=2N.In the very more application deflection angle number Q, liquid crystal polarization gratings
The piece number N of stacking also increases to ten or more.
Light beam can generate loss, the piece number N especially stacked in liquid crystal polarization gratings when passing through liquid-crystal polarized-light gate device
When larger, multi-disc liquid crystal polarization gratings, which stack generated optical loss, to be become can not be ignored, and the integral thickness of device
As a problem in need of consideration, these problems, which become, restricts an important factor for beam deflection angle degree mesh further increases,
It needs to be resolved.
Summary of the invention
The embodiment of the invention provides the compound liquid-crystal devices deflected for light beam.It is some for the embodiment to disclosure
Aspect has a basic understanding, and simple summary is shown below.The summarized section is not extensive overview, nor to determine
Key/critical component or the protection scope for describing these embodiments.Its sole purpose is presented with simple form
Concept, in this, as the preamble of following detailed description.
The embodiment of the present invention provides a kind of compound liquid-crystal device for light beam deflection, including：Adjustable liquid crystal half-wave piece
Liquid crystal cell, liquid crystal polarization gratings and dielectric film；
The liquid crystal cell, for controlling the direction of rotation of incident circularly polarized light by automatically controlled switching；
The liquid crystal polarization gratings, for being deflected to the circularly polarized light after the liquid crystal cell；
The liquid crystal cell and the liquid crystal polarization gratings share a glass substrate；
The dielectric film is plated on the surface of the liquid crystal cell, and the liquid crystal polarization gratings are attached to the dielectric film
On；
The dielectric film transmits the operation wavelength of the compound liquid-crystal device, and reflects light orientation exposure wavelength.
Based on the compound liquid-crystal device, as optional first embodiment, the liquid crystal cell, including：Along normal direction
The top glass substrate that successively fits closely, upper conductive film, upper liquid crystal oriented film, liquid crystal layer, lower liquid crystal aligning film, under lead
Conductive film and lower glass substrate；
The dielectric film is plated on the outer surface of the lower glass substrate.
Based on the first embodiment, as optional second embodiment, the lower glass substrate is vertical with the normal
Two surfaces, handled through optical polish.
Based on the first embodiment, as optional 3rd embodiment, the liquid crystal layer is nematic crystal layer, double frequency
Liquid crystal layer, network polymer liquid crystal layer or ferroelectric liquid crystal layer.
Based on the first embodiment, as optional fourth embodiment, the liquid crystal polarization gratings, including：Described in
The liquid crystal photo-alignment film and liquid crystal polarization gratings film that normal direction successively fits closely；
The liquid crystal photo-alignment film, is attached on the dielectric film.
Based on the fourth embodiment, as optional 5th embodiment, the outer surface of the top glass substrate and described
At least one of the outer surface of liquid crystal polarization gratings film, is coated with optical anti-reflective film.
Based on the compound liquid-crystal device, as optional sixth embodiment, the surface of the liquid crystal cell incident light and institute
At least one of the surface for stating liquid crystal polarization gratings emergent light, is coated with optical anti-reflective film.
Based on the compound liquid-crystal device or the first embodiment, as optional 7th embodiment, the medium is thin
The transmissivity of film transmission is higher than the first setting value, and the reflectivity of the dielectric film reflection is higher than the second setting value.
The compound liquid-crystal device that the present exemplary embodiment provides, achieves following beneficial effect：
1, it since the liquid crystal cell and liquid crystal polarization gratings of adjustable liquid crystal half-wave piece share a glass substrate, is saved in structure
A substrate of glass has been gone, therefore has reduced optical loss, has facilitated the optical loss characteristic for improving entire light deflection；
2, structure is more compact, reduces thickness of detector；
3, dielectric film can prevent the light orientation structure inside adjustable liquid crystal half-wave piece, when manufacturing compound liquid-crystal device
By secondary erasable.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the structure chart of compound liquid-crystal device in an exemplary embodiment；
Fig. 2 is the working principle diagram of compound liquid-crystal device shown in Fig. 1；
Fig. 3 is the sectional view of compound liquid-crystal device in an exemplary embodiment.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Embodiment only represents possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and
And the sequence of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The range of embodiment of the present invention includes the entire scope of claims and the institute of claims
There is obtainable equivalent.Herein, each embodiment can individually or generally be indicated that this is only with term " invention "
It is merely for convenience, and if in fact disclosing the invention more than one, it is not meant to automatically limit the range of the application
For any single invention or inventive concept.Herein, relational terms such as first and second and the like are used only for one
Entity, which is perhaps operated, to be distinguished and exists without requiring or implying between these entities or operation with another entity or operation
Any actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method or equipment not only include those elements, but also including
Other elements that are not explicitly listed.Each embodiment herein is described in a progressive manner, and each embodiment stresses
Be the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.
In one exemplary embodiment, as shown in Figure 1, the compound liquid-crystal device 200 for light beam deflection includes：Adjustable liquid
Liquid crystal cell 201, dielectric film 203 and the liquid crystal polarization gratings 202 of brilliant half-wave plate.
The liquid crystal cell 201 of adjustable liquid crystal half-wave piece, for controlling the rotation side of incident circularly polarized light by automatically controlled switching
To.
Liquid crystal polarization gratings 202, it is inclined for being carried out to the circularly polarized light after the liquid crystal cell 201 of adjustable liquid crystal half-wave piece
Turn.
The liquid crystal cell 201 and liquid crystal polarization gratings 202 of adjustable liquid crystal half-wave piece share a glass substrate.
Dielectric film 203 is plated on the surface of the liquid crystal cell 201 of adjustable liquid crystal half-wave piece, and liquid crystal polarization gratings 202 are attached to
On dielectric film 203.
Dielectric film 203 transmits the operation wavelength of compound liquid-crystal device 200, and reflects light orientation exposure wavelength.It can
Choosing, dielectric film 203 is high pass light filter film.Optionally, above-mentioned operation wavelength can be longer wavelengths of near infrared light, on
Stating light orientation exposure wavelength can be the shorter blue violet light of wavelength.
Above-mentioned light orientation exposure wavelength refers to the exposure wave of light orientation material in the manufacturing process of compound liquid-crystal device 200
It is long.
Fig. 2 shows the working principle of the compound liquid-crystal device 200 in the present exemplary embodiment, compound liquid-crystal devices 200
For in automatically controlled scanning means.Become Left-hand circular polarization after the quarter wave plate that linearly polarized light is placed by one with its direction at 45 °
Light after the left circularly polarized light is incident on the liquid crystal cell 201 of adjustable liquid crystal half-wave piece, may be implemented phase based on voltage control and prolong
It is late respectively the automatically controlled switching of 0 and π two states, when phase delay is 0, above-mentioned left circularly polarized light still maintains left-handed circle
Polarized light state, polarization and deflection direction occur for beam direction to the left when continuing to be incident on liquid crystal polarization gratings 202.Work as phase
When delay is π, above-mentioned left circularly polarized light becomes right-circularly polarized light, light beam side when continuing to be incident on liquid crystal polarization gratings 202
To generation polarization and deflect direction to the right.Then, the liquid crystal cell 201 based on adjustable liquid crystal half-wave piece is to incident ray polarized light
The automatically controlled scanning in light beam deflection direction is realized in left-handed and dextrorotation conversion.
Compound liquid-crystal device 200 in the present exemplary embodiment, achieves following beneficial effect：
1, it since the liquid crystal cell 201 and liquid crystal polarization gratings 202 of adjustable liquid crystal half-wave piece share a glass substrate, is tying
A substrate of glass is eliminated on structure, therefore reduces optical loss, and the optical loss for helping to improve entire light deflection is special
Sign property；
2, structure is more compact, reduces thickness of detector；
3, dielectric film 203 can prevent the light orientation structure inside adjustable liquid crystal half-wave piece 201, in manufacture compound liquid-crystal
By secondary erasable when device.
In one exemplary embodiment, as shown in figure 3, the compound liquid-crystal device 200 for light beam deflection includes：Adjustable liquid
Liquid crystal cell 201, dielectric film 203 and the liquid crystal polarization gratings 202 of brilliant half-wave plate.
The liquid crystal cell 201 of adjustable liquid crystal half-wave piece realizes Polarization Control function, may include：It is successively tight along normal direction
The top glass substrate 211 of closely connected conjunction, upper conductive film 212, liquid crystal aligning film 213, liquid crystal layer 214, lower liquid crystal aligning film
215, lower conductive film 216 and lower glass substrate 217.
As optional embodiment, upper conductive film 212 and lower conductive film 216 are transparent membrane.
As optional embodiment, two tables vertical with the normal of compound liquid-crystal device 200 of lower glass substrate 217
Face, i.e. lower glass substrate 217 and the lower adjacent surface of conductive film 216 and the surface adjacent with dielectric film 203, can be through
Optical polish processing, to be more suitable for adhering to.
As optional embodiment, liquid crystal layer 214 can be nematic crystal layer, dual-frequency liquid crystal layer, network polymer
Liquid crystal layer or ferroelectric liquid crystal layer.
Liquid crystal polarization gratings 202 realize light beam deflection, may include：The liquid successively fitted closely along normal direction
Brilliant light orientation film 218 and liquid crystal polarization gratings film 219.
Liquid crystal photo-alignment film 218 is attached on dielectric film 203.
Dielectric film 203 is plated on the outer surface of lower glass substrate 217.Work of the dielectric film 203 to compound liquid-crystal device 200
Make wavelength transmission, and light orientation exposure wavelength is reflected.
In view of the special construction of compound liquid-crystal device 200 in the present exemplary embodiment, manufacturing process also has particularity.
When manufacturing the film that liquid crystal polarization gratings 202 include, if the liquid crystal cell 201 of the adjustable liquid crystal half-wave piece as substrate is by light
Alignment agent is made using parallel-oriented mode, then carrying out micro-structure figure in the film for including to liquid crystal polarization gratings 202
When shape exposes, due to the translucency of glass substrate, light orientation that can be produced in the liquid crystal cell 201 to adjustable liquid crystal half-wave piece
Structure damages.Therefore, dielectric film 203 is plated on the outer surface of lower glass substrate 217, is in order to above-mentioned light orientation knot
Structure carries out secondary erasable protection.
Further, as optional embodiment, the transmissivity that dielectric film 203 transmits is higher than the first setting value, medium
The reflectivity of film 203 is higher than the second setting value.What above-mentioned first setting value and the second setting value can be set as usually using
Value also can be set as being higher than the value usually used, so that operating wave of the dielectric film 203 to compound liquid-crystal device 200
It is long that there is high-transmission rate, while there is high reflectance to light orientation exposure wavelength.For example, compound liquid-crystal device 200 is used for light beam
The operation wavelength of electric scanning is 1550 nanometers, and the exposure wavelength of light orientation material is 405 nanometers in manufacturing process, and nanometer medium is thin
Film 203 can have high-transmission rate to 1550 nanometers of wavelength, and have high reflectance to 405 nanometers of wavelength.
As optional embodiment, in the outer surface of top glass substrate 211 and the outer surface of liquid crystal polarization gratings 219
At least one, optical anti-reflective film is coated with, to reduce loss brought by the Fresnel reflection of compound liquid-crystal device surface, to mention
The through performance of high entire compound liquid-crystal device 200.
It may be implemented using the compound liquid-crystal device 200 in the present exemplary embodiment when using 1 with device normal
Direction is that the automatically controlled selection of two mirror image angles of symmetry axis may be implemented 2 when using N number of series connectionNThe automatically controlled choosing of a angle
It selects.
It should be understood that the invention is not limited to the process and structure that are described above and are shown in the accompanying drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by the attached claims
System.
Claims (8)
1. a kind of compound liquid-crystal device for light beam deflection, which is characterized in that including：The liquid crystal cell of adjustable liquid crystal half-wave piece,
Liquid crystal polarization gratings and dielectric film；
The liquid crystal cell, for controlling the direction of rotation of incident circularly polarized light by automatically controlled switching；
The liquid crystal polarization gratings, for being deflected to the circularly polarized light after the liquid crystal cell；
The liquid crystal cell and the liquid crystal polarization gratings share a glass substrate；
The dielectric film is plated on the surface of the liquid crystal cell, and the liquid crystal polarization gratings are attached on the dielectric film；
The dielectric film transmits the operation wavelength of the compound liquid-crystal device, and reflects light orientation exposure wavelength.
2. compound liquid-crystal device as described in claim 1, which is characterized in that the liquid crystal cell, including：Successively along normal direction
The top glass substrate that fits closely, upper conductive film, upper liquid crystal oriented film, liquid crystal layer, lower liquid crystal aligning film, lower conductive thin
Film and lower glass substrate；
The dielectric film is plated on the outer surface of the lower glass substrate.
3. compound liquid-crystal device as claimed in claim 2, which is characterized in that the lower glass substrate is vertical with the normal
Two surfaces, are handled through optical polish.
4. compound liquid-crystal device as claimed in claim 2, which is characterized in that the liquid crystal layer is nematic crystal layer, double frequency
Liquid crystal layer, network polymer liquid crystal layer or ferroelectric liquid crystal layer.
5. compound liquid-crystal device as claimed in claim 2, which is characterized in that the liquid crystal polarization gratings, including：Along the method
The liquid crystal photo-alignment film and liquid crystal polarization gratings film that line direction successively fits closely；
The liquid crystal photo-alignment film, is attached on the dielectric film.
6. compound liquid-crystal device as claimed in claim 5, which is characterized in that the outer surface of the top glass substrate and described
At least one of the outer surface of liquid crystal polarization gratings film, is coated with optical anti-reflective film.
7. compound liquid-crystal device as described in claim 1, which is characterized in that the surface of the liquid crystal cell incident light and described
At least one of the surface of liquid crystal polarization gratings emergent light, is coated with optical anti-reflective film.
8. compound liquid-crystal device as claimed in claim 1 or 2, which is characterized in that the transmissivity of the dielectric film transmission is high
It is higher than the second setting value in the reflectivity of the first setting value, the dielectric film reflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811026899.9A CN108873556A (en) | 2018-09-04 | 2018-09-04 | Compound liquid-crystal device for light beam deflection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811026899.9A CN108873556A (en) | 2018-09-04 | 2018-09-04 | Compound liquid-crystal device for light beam deflection |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375426A (en) * | 2018-12-14 | 2019-02-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of unilateral orientation active liquid crystal polarization grating structure and preparation method thereof |
| CN110058345A (en) * | 2019-03-28 | 2019-07-26 | 深圳市速腾聚创科技有限公司 | Scan Architecture and its control method |
| CN110133865A (en) * | 2019-04-18 | 2019-08-16 | 深圳市麓邦技术有限公司 | Imaging direction selects device and method thereof |
| CN110609426A (en) * | 2019-09-24 | 2019-12-24 | 苏州汉朗光电有限公司 | Electric control light beam deflection device, cascade structure and light beam deflection driving method |
| CN111025737A (en) * | 2019-12-23 | 2020-04-17 | 中国兵器装备研究院 | Electric scanning continuous light beam orientation device |
| CN112394364A (en) * | 2019-08-14 | 2021-02-23 | 通用汽车环球科技运作有限责任公司 | Image scanning using fixed optical elements |
| CN112965279A (en) * | 2021-03-18 | 2021-06-15 | 歌尔股份有限公司 | Focusing optical system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008070508A (en) * | 2006-09-13 | 2008-03-27 | Seiko Epson Corp | Liquid crystal device and electronic equipment |
| KR20080046321A (en) * | 2006-11-22 | 2008-05-27 | 삼성전자주식회사 | Array substrate, liquid crystal display device having the array substrate and method of manufacturing the array substrate |
| CN101681064A (en) * | 2007-04-16 | 2010-03-24 | 北卡罗莱纳州立大学 | Methods of fabricating switchable liquid crystal polarization gratings on reflective substrates and related devices |
| CN104155810A (en) * | 2014-07-22 | 2014-11-19 | 京东方科技集团股份有限公司 | Mask |
| CN106959547A (en) * | 2017-03-09 | 2017-07-18 | 苏州晶萃光学科技有限公司 | A kind of liquid crystal beam deviation and scanner and method |
| CN106990618A (en) * | 2017-06-05 | 2017-07-28 | 京东方科技集团股份有限公司 | Array base palte and its manufacture method, display panel and display device |
| CN208737174U (en) * | 2018-09-04 | 2019-04-12 | 洛伦兹（北京）科技有限公司 | Compound liquid-crystal device for light beam deflection |
-
2018
- 2018-09-04 CN CN201811026899.9A patent/CN108873556A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008070508A (en) * | 2006-09-13 | 2008-03-27 | Seiko Epson Corp | Liquid crystal device and electronic equipment |
| KR20080046321A (en) * | 2006-11-22 | 2008-05-27 | 삼성전자주식회사 | Array substrate, liquid crystal display device having the array substrate and method of manufacturing the array substrate |
| CN101681064A (en) * | 2007-04-16 | 2010-03-24 | 北卡罗莱纳州立大学 | Methods of fabricating switchable liquid crystal polarization gratings on reflective substrates and related devices |
| CN104155810A (en) * | 2014-07-22 | 2014-11-19 | 京东方科技集团股份有限公司 | Mask |
| CN106959547A (en) * | 2017-03-09 | 2017-07-18 | 苏州晶萃光学科技有限公司 | A kind of liquid crystal beam deviation and scanner and method |
| CN106990618A (en) * | 2017-06-05 | 2017-07-28 | 京东方科技集团股份有限公司 | Array base palte and its manufacture method, display panel and display device |
| CN208737174U (en) * | 2018-09-04 | 2019-04-12 | 洛伦兹（北京）科技有限公司 | Compound liquid-crystal device for light beam deflection |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375426A (en) * | 2018-12-14 | 2019-02-22 | 中国科学院长春光学精密机械与物理研究所 | A kind of unilateral orientation active liquid crystal polarization grating structure and preparation method thereof |
| CN109375426B (en) * | 2018-12-14 | 2021-06-25 | 中国科学院长春光学精密机械与物理研究所 | Single-side orientation active liquid crystal polarization grating structure and preparation method thereof |
| CN110058345A (en) * | 2019-03-28 | 2019-07-26 | 深圳市速腾聚创科技有限公司 | Scan Architecture and its control method |
| CN110058345B (en) * | 2019-03-28 | 2022-07-08 | 深圳市速腾聚创科技有限公司 | Scanning structure and control method thereof |
| CN110133865A (en) * | 2019-04-18 | 2019-08-16 | 深圳市麓邦技术有限公司 | Imaging direction selects device and method thereof |
| CN110133865B (en) * | 2019-04-18 | 2021-03-26 | 深圳市麓邦技术有限公司 | Imaging direction selecting apparatus and method thereof |
| CN112394364A (en) * | 2019-08-14 | 2021-02-23 | 通用汽车环球科技运作有限责任公司 | Image scanning using fixed optical elements |
| CN110609426A (en) * | 2019-09-24 | 2019-12-24 | 苏州汉朗光电有限公司 | Electric control light beam deflection device, cascade structure and light beam deflection driving method |
| CN110609426B (en) * | 2019-09-24 | 2022-02-01 | 重庆晶朗光电有限公司 | Electric control light beam deflection device, cascade structure and light beam deflection driving method |
| CN111025737A (en) * | 2019-12-23 | 2020-04-17 | 中国兵器装备研究院 | Electric scanning continuous light beam orientation device |
| CN112965279A (en) * | 2021-03-18 | 2021-06-15 | 歌尔股份有限公司 | Focusing optical system |
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