公开(公告)号：US20230418105A1

公开(公告)日：2023-12-28

申请号：US18076223

申请日：2022-12-06

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhimin Shi ,  Jian Xu ,  Yijing Fu

IPC: G02F1/1335 ,  G02F1/13357 ,  F21V8/00

CPC classification number: G02F1/133607 ,  G02B6/0008 ,  G02B6/0006 ,  G02F1/133621

Abstract: A lighting unit for a display panel includes a light distribution module, an array of out-couplers, and a beam spot array generation module. The light distribution module includes a plurality of output waveguides for configurably distributing illuminating light between the output waveguides. Each out-coupler is coupled to an output waveguide and configured to out-couple a portion of the illuminating light to propagate towards the display panel. The beam spot array generation module is configured to receive portions of the illuminating light out-coupled by out-couplers of the array of out-couplers and to convert each portion to illuminate a zone of the display panel with an illuminating light field comprising an array of light spots. Each light spot is configured for illuminating an individual pixel or sub-pixel of the zone of the display panel.

公开(公告)号：US20230393329A1

公开(公告)日：2023-12-07

申请号：US18188499

申请日：2023-03-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Tingling Rao ,  Andrew John Ouderkirk ,  Xiayu Feng ,  Sihui He ,  Babak Amirsolaimani ,  Wanli Chi ,  Lafe Joseph Purvis, II ,  Jian Xu ,  Zhaocheng Liu

IPC: G02B6/02 ,  G02B6/34 ,  G02B6/42

CPC classification number: G02B6/02038 ,  G02B6/34 ,  G02B6/425

Abstract: An optical element includes a waveguide body that is configured to guide light by total internal reflection from an input end to an output end, an input coupling structure located at the input end for coupling light into the waveguide body, and an output coupling structure located at the output end for coupling light out of the waveguide body, where the waveguide body includes a layer of an optically anisotropic organic solid crystal. Such an optical element may have low weight and exhibit good color uniformity while presenting a 2D diagonal field-of-view of at least approximately 10°.

公开(公告)号：US20230273437A1

公开(公告)日：2023-08-31

申请号：US18158842

申请日：2023-01-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Jian Xu ,  Jacques Gollier ,  Ying Geng

IPC: G02B27/01 ,  G02B27/09 ,  G02B27/28

CPC classification number: G02B27/0172 ,  G02B27/0983 ,  G02B27/286 ,  G02B27/44 ,  G02B2027/0174

Abstract: A virtual reality headset includes a peripheral display including light emitting pixels, an eyebox delimiting a location of a pupil in a user’s eye, and an optical assembly. The optical assembly includes an angularly selective element configured to transmit, without reflecting, an input light impinging at a selected angle, through a first curved optical element, and a second curved optical element in optical series with the first curved optical element and configured to reflect the input light back to the first curved optical element, the first curved optical element reflecting the input light in a radial direction, for transmission through the second curved optical element.

公开(公告)号：US12105377B2

公开(公告)日：2024-10-01

申请号：US18076223

申请日：2022-12-06

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhimin Shi ,  Jian Xu ,  Yijing Fu

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/13357

CPC classification number: G02F1/133607 ,  G02B6/0006 ,  G02B6/0008 ,  G02F1/133524 ,  G02F1/133621

Abstract: A lighting unit for a display panel includes a light distribution module, an array of out-couplers, and a beam spot array generation module. The light distribution module includes a plurality of output waveguides for configurably distributing illuminating light between the output waveguides. Each out-coupler is coupled to an output waveguide and configured to out-couple a portion of the illuminating light to propagate towards the display panel. The beam spot array generation module is configured to receive portions of the illuminating light out-coupled by out-couplers of the array of out-couplers and to convert each portion to illuminate a zone of the display panel with an illuminating light field comprising an array of light spots. Each light spot is configured for illuminating an individual pixel or sub-pixel of the zone of the display panel.

公开(公告)号：US20240012261A1

公开(公告)日：2024-01-11

申请号：US18062533

申请日：2022-12-06

Applicant: Meta Platforms Technologies, LLC

Inventor： Wai Sze Tiffany Lam ,  Jian Xu ,  Wanli Chi

IPC: G02B27/09 ,  G02B5/18 ,  G02B5/32 ,  G02F1/1335

CPC classification number: G02B27/0944 ,  G02B5/1847 ,  G02B5/32 ,  G02F1/133504

Abstract: A beam expander for a display in an enhanced reality headset is provided. The beam expander includes a first optical element configured to receive a collimated beam input and to provide a first expanded beam in a first direction, and a second optical element configured to receive the first expanded beam in the first direction and to provide a second expanded beam in a second direction to a display for an enhanced reality headset. An enhanced reality headset and a method for making a beam expander therein with the above features are also provided.

公开(公告)号：US20250085558A1

公开(公告)日：2025-03-13

申请号：US18955754

申请日：2024-11-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Wai Sze Tiffany Lam ,  Jian Xu ,  Wanli Chi

IPC: G02B27/09 ,  G02B5/18 ,  G02B5/32 ,  G02F1/1335

Abstract: A headset for enhanced reality applications comprises a light source to provide a collimated beam and a beam expander. The beam expander includes a first optical element that receives the collimated beam and provides a first expanded beam in a first direction, a second optical element that receives the first expanded beam in the first direction and provides a second expanded beam in a second direction, and a display. The display includes a liquid crystal layer to receive the second expanded beam and a pixelated electrode layer to activate a selected portion of the liquid crystal layer and provide a pixelated image to a user of the headset.

公开(公告)号：US12189134B2

公开(公告)日：2025-01-07

申请号：US18062533

申请日：2022-12-06

Applicant: Meta Platforms Technologies, LLC

Inventor： Wai Sze Tiffany Lam ,  Jian Xu ,  Wanli Chi

IPC: G02B27/09 ,  G02B5/18 ,  G02B5/32 ,  G02F1/1335

Abstract: A beam expander for a display in an enhanced reality headset is provided. The beam expander includes a first optical element configured to receive a collimated beam input and to provide a first expanded beam in a first direction, and a second optical element configured to receive the first expanded beam in the first direction and to provide a second expanded beam in a second direction to a display for an enhanced reality headset. An enhanced reality headset and a method for making a beam expander therein with the above features are also provided.

公开(公告)号：US12124070B2

公开(公告)日：2024-10-22

申请号：US18128497

申请日：2023-03-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Jian Xu ,  Xingzhou Tu ,  Ying Geng ,  Jacques Gollier

IPC: F21V8/00 ,  G02B27/01 ,  G02F1/1335 ,  G03F7/00 ,  G03H1/04

CPC classification number: G02B6/005 ,  G02B6/0066 ,  G02B27/0172 ,  G02F1/133514 ,  G02F1/133528 ,  G03F7/70191 ,  G03F7/70408 ,  G03H1/0402 ,  G02B2027/0112 ,  G02F2201/52 ,  G03H2223/13 ,  G03H2260/12

Abstract: According to examples, a phase plate may include a transparent substrate and a photopolymer layer attached to the transparent substrate. The photopolymer layer may adjust a backlight via a phase adjustment and focusing. The phase plate may focus a plurality of red, green, and blue components of the backlight onto respective red, green, and blue subpixels of a thin-film-transistor (TFT) layer deposited thereon. A distance between the photopolymer layer of the phase plate and the plurality of red, green, and blue subpixels of the thin-film-transistor (TFT) layer may be in a range from about 200 μm to about 500 μm. In some examples, the phase plate may be part of a liquid crystal display (LCD) apparatus along with a red, green, blue (RGB) laser to provide backlight; a grating light guide to transmit the backlight; and a liquid crystal display (LCD) layer on the thin-film-transistor (TFT) layer.

公开(公告)号：US20240288684A1

公开(公告)日：2024-08-29

申请号：US18587339

申请日：2024-02-26

Applicant: Meta Platforms Technologies, LLC

Inventor： Wai Sze Tiffany Lam ,  Wanli Chi ,  Jian Xu

IPC: G02B26/10 ,  G02B5/18 ,  G02B27/01 ,  G02B27/09 ,  G02B27/44 ,  G06T19/00

CPC classification number: G02B26/106 ,  G02B5/18 ,  G02B27/0172 ,  G02B27/0944 ,  G02B27/44 ,  G06T19/006

Abstract: An apparatus of the subject technology includes a light source to generate a light beam, a first grating illuminated by the light beam, and a second grating optically coupled to the first grating. The first grating performs a first diffraction to expand the light beam in a first dimension to form a first beam. The second grating performs a second diffraction to expand the first beam in a second dimension to provide a backlight for a display device.