公开(公告)号：US11982906B1

公开(公告)日：2024-05-14

申请号：US17458761

申请日：2021-08-27

Applicant: Beam Engineering for Advanced Measurements Co.

Inventor： Nelson V. Tabirian ,  David E. Roberts

IPC: G02F1/13363 ,  G02F1/1335

CPC classification number: G02F1/133638 ,  G02F1/133526 ,  G02F2201/305 ,  G02F2203/22

Abstract: Diffractive optical structures, lenses, waveplates, devices, systems, and methods, which have the same effect on light regardless of the polarization state of the light, utilizing systems of polarization discriminator diffractive waveplate optics and differential polarization converters with special arrangements that do not require introducing spatial separation between the layers.

公开(公告)号：US11982886B2

公开(公告)日：2024-05-14

申请号：US17311022

申请日：2019-12-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Yoshiro Nomoto

IPC: G02F1/01 ,  G02F1/015 ,  G02F1/03

CPC classification number: G02F1/0126 ,  G02F1/0151 ,  G02F1/0311 ,  G02F2201/305

Abstract: A light modulator of to this embodiment enables high-speed modulation to an SLM using a liquid crystal. The light modulator comprises refractive index regions arranged in a first direction on a reference plane, a region surrounding each refractive index regions and having a refractive index lower than that of each refractive index region, a first conductive film, and a second conductive film. The first conductive film is provided on any one of a pair of side surfaces arranged in the first direction in at least one refractive index region selected from the refractive index regions and belonging to a first group. The second conductive film is provided on any one of the pair of side surfaces so as not to overlap with the first conductive film in at least one refractive index region selected from the refractive index regions and belonging to a second group.

公开(公告)号：US11924396B2

公开(公告)日：2024-03-05

申请号：US17579279

申请日：2022-01-19

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Michael Hall ,  Qing Chao ,  Byron Taylor ,  Xinqiao Liu

IPC: H04N13/271 ,  G01S17/89 ,  G02B26/08 ,  G02B27/01 ,  G02F1/1347 ,  G02F1/139 ,  G02F1/29 ,  G02F1/33 ,  G06F3/03 ,  G06T7/521 ,  H04N13/207 ,  H04N13/344 ,  H04N13/383 ,  G02B26/00

CPC classification number: H04N13/271 ,  G01S17/89 ,  G02B26/08 ,  G02B26/0808 ,  G02B27/0101 ,  G02B27/017 ,  G02F1/13471 ,  G02F1/1393 ,  G02F1/292 ,  G02F1/33 ,  G06F3/0325 ,  G06T7/521 ,  H04N13/207 ,  H04N13/344 ,  H04N13/383 ,  G02B26/004 ,  G02B2027/0138 ,  G02B2027/014 ,  G02F2201/305

Abstract: A depth camera assembly (DCA) for depth sensing of a local area. The DCA includes a transmitter, a receiver, and a controller. The transmitter illuminates a local area with outgoing light in accordance with emission instructions. The transmitter includes a fine steering element and a coarse steering element. The fine steering element deflects one or more optical beams at a first deflection angle to generate one or more first order deflected scanning beams. The coarse steering element deflects the one or more first order deflected scanning beams at a second deflection angle to generate the outgoing light projected into the local area. The receiver captures one or more images of the local area including portions of the outgoing light reflected from the local area. The controller determines depth information for one or more objects in the local area based in part on the captured one or more images.

公开(公告)号：US20230314864A1

公开(公告)日：2023-10-05

申请号：US18329934

申请日：2023-06-06

Applicant: Japan Display Inc.

Inventor： Chikyu NAKAOKA ,  Masaaki KABE

IPC: G02F1/1335 ,  G02F1/13357 ,  G02F1/1333

CPC classification number: G02F1/133504 ,  G02F1/133567 ,  G02F1/133512 ,  G02F1/133602 ,  G02F1/133621 ,  G02F1/133354 ,  G02F1/133528 ,  G02F2202/28 ,  G02F2201/305

Abstract: According to one embodiment, a display device includes a display panel that includes a display portion including pixels and a non-display portion including an opening, an illumination device, and a color separation element provided between the display panel and the illumination device. The color separation element includes a first element overlapping the pixel and a second element overlapping the opening, the first element separates illumination light from the illumination device into light of a plurality of colors and irradiates the pixel with the light, and the second element separates illumination light from the illumination device into light of a plurality of colors and irradiates the opening with the light.

公开(公告)号：US20180246372A1

公开(公告)日：2018-08-30

申请号：US15556253

申请日：2017-03-10

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Kang GUO

IPC: G02F1/1335 ,  G02F1/1343 ,  G03B21/20 ,  G03B21/00 ,  G02F1/1341

CPC classification number: G02F1/133528 ,  B29D11/00326 ,  G02B5/18 ,  G02B5/1819 ,  G02B5/1866 ,  G02B5/188 ,  G02B2005/1804 ,  G02F1/133504 ,  G02F1/133516 ,  G02F1/133553 ,  G02F1/133606 ,  G02F1/1341 ,  G02F1/13439 ,  G02F2001/133354 ,  G02F2001/133507 ,  G02F2001/13355 ,  G02F2001/133567 ,  G02F2001/133607 ,  G02F2001/136281 ,  G02F2201/121 ,  G02F2201/305 ,  G02F2203/02 ,  G02F2203/34 ,  G03B21/006 ,  G03B21/2073 ,  G03B21/208

Abstract: An embodiment of the present disclosure provides a panel structure, its manufacturing method and a projection system, which can improve optical efficiency of the projection system and reduce the volume of the projection system. The panel structure includes: a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate; a reflective electrode at a side of the first substrate facing the second substrate; a transparent beam-splitting film disposed between the reflective electrode and the liquid crystal layer; and a common electrode disposed at a side of the second substrate facing the first substrate.

公开(公告)号：US20180217443A1

公开(公告)日：2018-08-02

申请号：US15568446

申请日：2017-06-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Qian WANG ,  Xue DONG ,  Xiaochuan CHEN ,  Wenqing ZHAO

IPC: G02F1/1335 ,  G02F1/1343 ,  G02F1/133 ,  G02F1/1337 ,  G02F1/137

CPC classification number: G02F1/133528 ,  G02F1/13306 ,  G02F1/1337 ,  G02F1/134309 ,  G02F1/13439 ,  G02F1/137 ,  G02F2001/133531 ,  G02F2201/305

Abstract: A liquid crystal grating includes: a first polarizer and a second polarizer arranged opposite to each other; a liquid crystal layer arranged between the first polarizer and the second polarizer; a plurality of first electrodes disposed on a side of the first polarizer adjacent to the liquid crystal layer; and a second electrode disposed on a side of the second polarizer adjacent to the liquid crystal layer, wherein, a width of each first electrode of the plurality of first electrodes is at nanoscale.

公开(公告)号：US20180164490A1

公开(公告)日：2018-06-14

申请号：US15894565

申请日：2018-02-12

Applicant: LEIA INC.

Inventor： Ming Ma ,  David A. Fattal

IPC: F21V8/00 ,  G02B27/30 ,  G02B27/22

CPC classification number: G02B6/0031 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0068 ,  G02B19/0028 ,  G02B27/22 ,  G02B27/225 ,  G02B27/30 ,  G02F1/133615 ,  G02F2201/305 ,  G02F2203/12 ,  H04N13/31

Abstract: Dual-direction collimation and a dual surface collimator provide dual-direction collimated light at a non-zero propagation angle. The dual surface collimator includes an entrance surface and a reflector surface each having a curved shape. The entrance surface is configured to refract incident light and the reflector surface is configured to reflect the refracted light back toward the entrance surface. The entrance surface is further configured to re-reflect the reflected light by total internal reflection toward an output aperture. Curved shapes and relative orientation of the entrance and reflector surfaces, in combination, are configured to convert the incident light into dual-direction collimated light having the non-zero propagation angle. A three-dimensional (3D) display includes the dual surface collimator, a plate light guide and an array of multibeam diffraction gratings to provide a plurality of light beams corresponding to different 3D view of the display.

公开(公告)号：US20180136817A1

公开(公告)日：2018-05-17

申请号：US15870481

申请日：2018-01-12

Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.

Inventor： Fan YANG ,  Lei NIU ,  Jun MA ,  Jialing LI

IPC: G06F3/0481 ,  G02B5/30 ,  G02B27/22 ,  G02F1/1335 ,  G02F1/13363 ,  G06F3/0354 ,  G06F3/0362 ,  G06F3/041

CPC classification number: G06F3/04815 ,  G02B5/1861 ,  G02B5/3058 ,  G02B27/22 ,  G02B27/2214 ,  G02F1/133504 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2201/305 ,  G06F3/0354 ,  G06F3/0362 ,  G06F3/041

Abstract: A display panel is provided. The display panel comprises a display panel; and a light modulation substrate disposed opposite to the display panel. The light modulation substrate includes a base layer and a transparent dielectric layer covering the base layer. The base layer has a first surface facing the display panel and an opposing second surface, and the transparent dielectric layer is disposed on the first surface of the base layer. A plurality of reflective gratings are disposed on the base layer. The transparent dielectric layer has a first surface facing the base layer and an opposing second surface, and the second surface of the transparent dielectric layer is a transparent dielectric layer surface. The transparent dielectric layer has a refractive index of n, and n>1. Outgoing light of the display device converges to a plurality of light-emitting points outside the display device.

公开(公告)号：US20180045990A1

公开(公告)日：2018-02-15

申请号：US15552422

申请日：2016-03-23

Applicant: FUJIKURA LTD.

Inventor： Hideyuki Wada ,  Shinichi Sakamoto ,  Kohei Matsumaru

IPC: G02F1/1333 ,  G03B21/00 ,  G02B5/20 ,  H01L23/02 ,  G02F1/31 ,  G02B26/08

CPC classification number: G02F1/1333 ,  G02B5/201 ,  G02B26/085 ,  G02B26/0875 ,  G02F1/31 ,  G02F2001/136281 ,  G02F2201/305 ,  G03B21/005 ,  H01L23/02

Abstract: An optical device includes a window glass plate with which a window of a lid section is provided and which is connected to the lid section via a solder layer so that an internal space of the optical device is hermetically sealed. The solder layer has a void which is isolated from an external space and an internal space of the optical device.

公开(公告)号：US20180031917A1

公开(公告)日：2018-02-01

申请号：US15505156

申请日：2016-08-12

Applicant: BOE Technology Group Co., Ltd. ,  Beijing BOE Optoelectronics Technology Co., Ltd.

Inventor： Xiaochen Niu ,  Xue Dong ,  Xiaochuan Chen ,  Wenqing Zhao ,  Ming Yang ,  Qian Wang ,  Pengcheng Lu ,  Jian Gao ,  Lei Wang ,  Rui Xu ,  Pengpeng Wang

IPC: G02F1/1335 ,  G02F1/1343

CPC classification number: G02B6/2938 ,  G02F1/133504 ,  G02F1/133602 ,  G02F1/133621 ,  G02F2201/305

Abstract: A backlight unit, a liquid crystal display and method of manufacturing the same are provided. The backlight unit includes a backlight source and a diffraction grating disposed on the backlight source. The diffraction grating is etched on the backlight source, each of monochromatic light emitting units in the backlight source corresponds to N grating patterns on the diffraction grating, where N is a natural number greater than 1.