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1. 发明授权

US11474366B2 Light projector 有权
公开(公告)号：US11474366B2
公开(公告)日：2022-10-18
申请号：US16867574
申请日：2020-05-06
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen , Yen-Chen Chen
IPC分类号： G02B27/42 , G02B5/30 , G02B27/09 , G01B11/22 , G01B11/25
摘要： 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.

2. 发明申请

US20220179280A1 TUNABLE ILLUMINATOR 有权
公开(公告)号：US20220179280A1
公开(公告)日：2022-06-09
申请号：US17110302
申请日：2020-12-03
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen
IPC分类号： G02F1/31
摘要： A tunable illuminator includes a light source, at least one geometric phase liquid crystal element, and a driver. The light source is configured to emit an illumination beam. The geometric phase liquid crystal element is disposed on a path of the illumination beam and configured to be switched between a first state and a second state, wherein the first state is closer to a geometric phase than the second state is. The driver is configured to respectively apply a first voltage difference and a second voltage difference to the geometric phase liquid crystal element, wherein the geometric phase liquid crystal element is switched to the first state in response to the first voltage difference, the geometric phase liquid crystal element is switched to the second state in response to the second voltage difference, and the first voltage difference is less than the second voltage difference.

3. 发明申请

US20210173291A1 TUNABLE LIGHT PROJECTOR 有权
公开(公告)号：US20210173291A1
公开(公告)日：2021-06-10
申请号：US16703775
申请日：2019-12-04
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Biing-Seng Wu , Hung-Shan Chen , Ming-Syuan Chen
IPC分类号： G03B21/20
摘要： A tunable light projector including the following is provided. A light source is configured to emit a light beam. A fixed optical phase modulator is disposed on a path of the light beam and is configured to modulate phases of the light beam. A tunable liquid crystal panel is disposed on the path of the light beam and a partial region of the tunable liquid crystal panel is configured to electrically switch the light beam between a structured light and a flood light. A driver is configured to control the light source and control the tunable liquid crystal panel to switch the light beam between the structured light and the flood light. The tunable liquid crystal panel includes: a first substrate; a second substrate; a liquid crystal layer; a first electrode layer; and a second electrode layer.

4. 发明申请

US20190101381A1 OPTICAL SENSING DEVICE AND STRUCTURED LIGHT PROJECTOR 审中-公开
公开(公告)号：US20190101381A1
公开(公告)日：2019-04-04
申请号：US16043153
申请日：2018-07-24
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen , Yen-Chen Chen
IPC分类号： G01B11/25 , G02F1/1335 , G02B27/42
摘要： An optical sensing device configured to detect an object or features of the object is provided. The optical sensing device includes a structured light projector and a sensor. A structured light projector is configured to project a structured light to the object and includes a light source and at least one tunable liquid crystal diffractive optical element (LCDOE). The light source is configured to emit a light beam. The at least one tunable LCDOE is disposed on a path of the light beam and configured to convert the light beam into the structured light to form a structured light pattern on the object. The LCDOE is capable of controlling the structured light pattern by controlling voltage distribution to a liquid crystal layer in the LCDOE. The sensor is configured to sense a reflected light formed by the object reflecting the structured light. Besides, a structured light projector is also provided.

5. 发明申请

US20220146846A1 STRUCTURED LIGHT PROJECTOR 有权
公开(公告)号：US20220146846A1
公开(公告)日：2022-05-12
申请号：US17581823
申请日：2022-01-21
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen , Yen-Chen Chen
IPC分类号： G02B27/42 , G01B11/25 , G02B5/32 , G03B21/00 , G02B5/30 , H04N13/254 , G02B27/28
摘要： 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.

6. 发明授权

US11269193B2 Optical sensing device and structured light projector 有权
公开(公告)号：US11269193B2
公开(公告)日：2022-03-08
申请号：US15970856
申请日：2018-05-03
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen , Yen-Chen Chen
IPC分类号： G02B27/42 , G01B11/25 , G02B5/32 , G03B21/00 , G02B5/30 , H04N13/254 , G02B27/28 , G03B21/20 , G01N21/88
摘要： 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.

7. 发明授权

US11126060B2 Tunable light projector 有权
公开(公告)号：US11126060B2
公开(公告)日：2021-09-21
申请号：US16371127
申请日：2019-04-01
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen , Ming-Syuan Chen
IPC分类号： G02F1/29 , G01S7/481 , G01S17/42
摘要： 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.

8. 发明申请

US20200264442A1 LIGHT PROJECTOR 审中-公开
公开(公告)号：US20200264442A1
公开(公告)日：2020-08-20
申请号：US16867574
申请日：2020-05-06
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen , Yen-Chen Chen
IPC分类号： G02B27/42 , G02B5/30 , G02B27/09 , G01B11/25 , G01B11/22
摘要： 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.

9. 发明授权

US10274719B2 Optical system 有权
公开(公告)号：US10274719B2
公开(公告)日：2019-04-30
申请号：US15682521
申请日：2017-08-21
申请人： LIQXTAL TECHNOLOGY INC.
发明人： Hung-Shan Chen , Jui-Ping Chang
IPC分类号： G02B26/00 , G02B3/12 , G02B1/00 , G02B1/02 , G02B1/06 , G02B15/00
摘要： 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.

10. 发明授权

US09494834B2 Electro-optical liquid crystal device 有权
标题翻译：电光液晶装置
公开(公告)号：US09494834B2
公开(公告)日：2016-11-15
申请号：US14170843
申请日：2014-02-03
申请人： LIQXTAL TECHNOLOGY INC. , National Chiao Tung University
发明人： Yi-Hsin Lin , Hung-Shan Chen
IPC分类号： G02F1/1347 , G02F1/137 , G02F1/1333 , G02F1/1343 , G02F1/29
CPC分类号： G02F1/13473 , G02F1/133377 , G02F1/134309 , G02F1/13471 , G02F1/137 , G02F1/29 , G02F2001/294
摘要： 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.
摘要翻译：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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