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公开(公告)号：US20220146846A1
公开(公告)日：2022-05-12
申请号：US17581823
申请日：2022-01-21
Applicant: LIQXTAL TECHNOLOGY INC.
Inventor： Hung-Shan Chen , Yen-Chen Chen
Abstract: An optical sensing device adopted to use structured light to detect an object is provided. The optical sensing device includes a structured light projector and a sensor. The structured light projector includes a light source and at least one beam multiplication film. The light source is configured to emit a light beam. The at least one beam multiplication film is disposed on a transmission path of the light beam and is made of anisotropic refractive index material, wherein a plurality of separated light beams are produced after the light beam from the light source passes through the at least one beam multiplication film, so as to form the structured light. The sensor is configured to sense the structured light reflected from the object. Besides, a structured light projector is also provided.
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公开(公告)号：US11269193B2
公开(公告)日：2022-03-08
申请号：US15970856
申请日：2018-05-03
Applicant: LIQXTAL TECHNOLOGY INC.
Inventor： Hung-Shan Chen , Yen-Chen Chen
IPC: G02B27/42 , G01B11/25 , G02B5/32 , G03B21/00 , G02B5/30 , H04N13/254 , G02B27/28 , G03B21/20 , G01N21/88
Abstract: An optical sensing device adopted to use structured light to detect an object is provided. The optical sensing device includes a structured light projector and a sensor. The structured light projector includes a light source and at least one beam multiplication film. The light source is configured to emit a light beam. The at least one beam multiplication film is disposed on a transmission path of the light beam and is made of anisotropic refractive index material, wherein a plurality of separated light beams are produced after the light beam from the light source passes through the at least one beam multiplication film, so as to form the structured light. The sensor is configured to sense the structured light reflected from the object. Besides, a structured light projector is also provided.
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公开(公告)号：US11126060B2
公开(公告)日：2021-09-21
申请号：US16371127
申请日：2019-04-01
Applicant: LIQXTAL TECHNOLOGY INC.
Inventor： Hung-Shan Chen , Ming-Syuan Chen
Abstract: A tunable light projector including a light source, a fixed optical phase modulator, a tunable liquid crystal panel, and a driver is provided. The light source is configured to emit a light beam. The fixed optical phase modulator is disposed on a path of the light beam and configured to modulate phases of the light beam. The tunable liquid crystal panel is disposed on the path of the light beam from the fixed optical phase modulator and configured to switch the light beam between a structured light and a flood light. The driver is electrically connected to a first electrode layer and a second electrode layer of the tunable liquid crystal panel and configured to change a voltage difference between the first electrode layer and the second electrode layer, so as to switch the light beam between the structured light and the flood light.
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公开(公告)号：US20200264442A1
公开(公告)日：2020-08-20
申请号：US16867574
申请日：2020-05-06
Applicant: LIQXTAL TECHNOLOGY INC.
Inventor： Hung-Shan Chen , Yen-Chen Chen
Abstract: A light projector including a light source, a beam multiplication film, and a tunable wave plate is provided. The light source is configured to emit a light beam. The beam multiplication film is disposed on a transmission path of the light beam and made of anisotropic refractive index material, wherein a plurality of separated light beams are produced after the light beam from the light source passes through the beam multiplication film. The tunable wave plate is disposed on transmission paths of the separated light beams from the beam multiplication film and configured to modulate the separated light beams.
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公开(公告)号：US10274719B2
公开(公告)日：2019-04-30
申请号：US15682521
申请日：2017-08-21
Applicant: LIQXTAL TECHNOLOGY INC.
Inventor： Hung-Shan Chen , Jui-Ping Chang
Abstract: An optical system including at least one liquid crystal lens and an imaging lens module is provided. The optical system is configured to form an image of an object. The at least one liquid crystal lens and the imaging lens module is disposed on a path of light from the object. The at least one liquid crystal lens includes a first substrate, a second substrate, and a liquid crystal layer. The second substrate is opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. An effective refractive index of each position on the liquid crystal layer is related to an voltage applied, and the at least one liquid crystal lens is configured to change an optical axis of the at least one liquid crystal lens by changing distribution of orientations of liquid crystal molecules of the liquid crystal layer.
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Patent Agency Ranking
公开(公告)号：US09494834B2
公开(公告)日：2016-11-15
申请号：US14170843
申请日：2014-02-03
Applicant: LIQXTAL TECHNOLOGY INC. , National Chiao Tung University
Inventor： Yi-Hsin Lin , Hung-Shan Chen
IPC: G02F1/1347 , G02F1/137 , G02F1/1333 , G02F1/1343 , G02F1/29
CPC classification number: G02F1/13473 , G02F1/133377 , G02F1/134309 , G02F1/13471 , G02F1/137 , G02F1/29 , G02F2001/294
Abstract: A liquid crystal (LC) lens comprises a first substrate, a first electrode structure, an electrically tunable LC layer structure, a second substrate and a second electrode structure, wherein the electrically tunable LC layer structure is arranged between the first substrate and the second substrate. The electrically tunable LC layer structure includes at least two LC layers stacked on top of one another, and each LC layer further includes at least one LC unit. In the stacked structure, at least one of the LC layers includes at least one partition unit to partition the LC layer into one or more LC units. The layout of the LC units of the upper LC layer differs from that of the lower LC layer. In the present invention, the shape and layout of the LC units are designed to provide better optical performance without changing the thickness of the liquid crystal lens.
Abstract translation: 液晶（LC）透镜包括第一基板，第一电极结构，电可调LC层结构，第二基板和第二电极结构，其中电可调LC层结构布置在第一基板和第二基板之间 。 电可调LC层结构包括彼此堆叠的至少两个LC层，并且每个LC层还包括至少一个LC单元。 在堆叠结构中，LC层中的至少一个包括至少一个分隔单元，以将LC层分成一个或多个LC单元。 上层LC层的LC单元的布局与下层LC层的布局不同。 在本发明中，LC单元的形状和布局被设计成在不改变液晶透镜的厚度的情况下提供更好的光学性能。
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公开(公告)号：US20150219893A1
公开(公告)日：2015-08-06
申请号：US14689919
申请日：2015-04-17
Applicant: LIQXTAL TECHNOLOGY INC. , National Chiao Tung University
Inventor： Hung-Shan CHEN , Yi-Hsin LIN
CPC classification number: G02B27/0025 , G02B3/0087 , G02B17/0856 , G02B27/0172 , G02F1/29 , G02F2001/294
Abstract: An optical system for aberration compensation comprising an optical module and an asymmetric refractive index distribution film is disclosed. The asymmetric refractive index distribution film comprises a liquid crystal and a liquid crystalline polymer, wherein the asymmetric refractive index distribution film set on an out-light surface or an in-light surface of the optical module. A display system comprising the above-mentioned optical system and an image panel are also disclosed herein. The asymmetric refractive index distribution film of the present invention has non-uniform refractive index distribution so as to effectively compensate the aberration formed by the optical module.
Abstract translation: 公开了一种用于像差补偿的光学系统，其包括光学模块和不对称折射率分布膜。 所述不对称折射率分布膜包括液晶和液晶聚合物，其中所述不对称折射率分布膜设置在所述光学模块的外光表面或光入射表面上。 本文还公开了包括上述光学系统和图像面板的显示系统。 本发明的不对称折射率分布膜具有不均匀的折射率分布，以有效地补偿由光学模块形成的像差。
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公开(公告)号：US20250076728A1
公开(公告)日：2025-03-06
申请号：US18239761
申请日：2023-08-30
Applicant: LIQXTAL TECHNOLOGY INC.
Inventor： Hung-Shan Chen , Sung-Nan Chen , Ming-Syuan Chen
IPC: G02F1/29
Abstract: A lens structure includes a first substrate, located in a first layer; a second substrate, located in a second layer; a first adhesive material layer, located in the second layer and located above the second substrate, wherein the adhesive material layer located in a first region of the second layer is a surface relief structure; a first conductive layer, located in a second region of the first layer corresponding to a projected position of the first region, and located under the first substrate; a second conductive layer, located in the second layer and located above the first adhesive material layer; and a first electrically controlled refractive index layer, located in a third region of a third layer corresponding to a projected position of the first region, wherein the third layer is beneath the first layer and above the second layer.
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公开(公告)号：US11789319B2
公开(公告)日：2023-10-17
申请号：US17129839
申请日：2020-12-21
Applicant: Liqxtal Technology Inc.
Inventor： Chih-Chan Lin , Yu-Ching Chen
IPC: G02F1/1339 , G02F1/1337 , G02F1/01 , G02F1/161 , G02F1/1679
CPC classification number: G02F1/13394 , G02F1/0107 , G02F1/133784 , G02F1/161 , G02F1/1679 , G02F1/13396 , G02F1/133738
Abstract: A liquid crystal phase modulation device includes a first substrate, a second substrate, a liquid crystal layer, at least one first spacer, and a first alignment layer. The second substrate is opposite to the first substrate. The liquid crystal layer is between the first substrate and the second substrate. The one first spacer is between the first substrate and the second substrate. The first alignment layer is adjacent to the liquid crystal layer and the first spacer, and has a first alignment direction. The first spacer has a first length in the first alignment direction and a second length in a direction perpendicular to the first alignment direction as view from top, and the first length is greater than the second length.
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公开(公告)号：US11487141B1
公开(公告)日：2022-11-01
申请号：US17700437
申请日：2022-03-21
Applicant: LIQXTAL TECHNOLOGY INC.
Inventor： Hung-Shan Chen , Ming-Syuan Chen
IPC: G02F1/133 , G02F1/1335
Abstract: A dimmer includes a liquid crystal (LC) panel and a driving circuit. The LC panel has a plurality of LCs doped with dichroic dye. The LC panel comprises a plurality of pixels. The driving circuit is electrically connected to the LC panel, and configured to control driving of the pixels of the LC panel. At least one of the pixels has a storage capacitor and an LC capacitor coupled in parallel. A ratio of a capacitance value of the LC capacitor to a capacitance value of the storage capacitor is greater than 10:1. The driving circuit is configured to control an LC angle of LCs in each of the pixels, and the dichroic dye is driven by surrounding LCs and presents an angle correlated with the LC angle of the surrounding LCs.
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