公开(公告)号：US11846797B2

公开(公告)日：2023-12-19

申请号：US16862396

申请日：2020-04-29

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jacques Gollier ,  Brian Wheelwright ,  Ying Geng ,  Babak Amirsolaimani ,  Fenglin Peng

IPC: G02B6/10 ,  G02F1/13 ,  F21V8/00 ,  G02B5/30 ,  G02B27/01 ,  G02B27/00 ,  G02B27/14 ,  G02B27/28 ,  G02B6/12

CPC classification number: G02B6/0056 ,  G02B5/3025 ,  G02B6/0028 ,  G02B6/0031 ,  G02B6/105 ,  G02B27/0093 ,  G02B27/0172 ,  G02B27/145 ,  G02B27/283 ,  G02B6/0025 ,  G02B2006/12116 ,  G02B2027/0125 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02F1/1326

Abstract: An optical device includes an optical waveguide and a plurality of reflective polarizers. The plurality of reflective polarizers include a first reflective polarizer and a second reflective polarizer disposed inside the optical waveguide so that the first reflective polarizer receives light propagating inside the optical waveguide, redirects a first portion of the light in a first direction, and transmits a second portion of the light in a second direction non-parallel to the first direction. The second reflective polarizer receives the second portion of the light from the first reflective polarizer, redirects a third portion of the light, and transmits a fourth portion of the light. A ratio between the first portion and the second portion of the light has a first value and a ratio between the third portion and the fourth portion of the light has a second value distinct from the first value.

公开(公告)号：US11835729B2

公开(公告)日：2023-12-05

申请号：US18049173

申请日：2022-10-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Fenglin Peng ,  Ying Geng ,  Oleg Yaroshchuk

IPC: G02B27/28 ,  G02B27/01 ,  G02B27/42 ,  G02F1/1362 ,  G02B27/00 ,  G02F1/1335 ,  G02B5/30

CPC classification number: G02B27/283 ,  G02B27/0172 ,  G02B27/425 ,  G02F1/136277 ,  G02B2027/0178

Abstract: An example optical assembly includes a display, a light source for illuminating the display, and a diffraction type polarizing beam splitter (DT-PBS) configured to direct light from a light director, wherein the DT-PBS is polarization sensitive and configured to direct, based on polarization, a first portion of light towards the display.

公开(公告)号：US11768330B2

公开(公告)日：2023-09-26

申请号：US17485064

申请日：2021-09-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Miaomiao Xu ,  Brian Wheelwright ,  Ying Geng

IPC: G02B6/293 ,  G02B27/01 ,  G02B27/30

CPC classification number: G02B6/29301 ,  G02B27/0101 ,  G02B27/0172 ,  G02B27/30 ,  G02B2027/0123

Abstract: A device includes an array of light emitters configured to generate multiple light beams to form an image, the image having a field of view and a planar waveguide having an edge configured to receive multiple light beams from the array of light emitters, each light beam associated with a portion of the field of view. The device also includes a lens array comprising multiple lenses linearly extended to overlap an edge portion of the planar waveguide, the lenses optically coupling the light beams into the planar waveguide, and one or more output couplers in the planar waveguide configured to direct the light beams into an eyebox, wherein the eyebox forms an area that includes a pupil of a viewer of the image.

公开(公告)号：US11740471B2

公开(公告)日：2023-08-29

申请号：US17401160

申请日：2021-08-12

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Fenglin Peng ,  Ying Geng ,  Lu Lu ,  Yun-Han Lee ,  Alexander Koshelev ,  Giuseppe Calafiore ,  Jacques Gollier

IPC: G02F1/1335 ,  G02B27/01 ,  F21V8/00 ,  G02F1/13357

CPC classification number: G02B27/0172 ,  G02B6/005 ,  G02B6/0078 ,  G02B27/0179 ,  G02F1/133536 ,  G02F1/133553 ,  G02B2027/0178 ,  G02B2027/0187 ,  G02F1/133524 ,  G02F1/133526 ,  G02F1/133606 ,  G02F1/133621

Abstract: A display device with a transparent illuminator and an liquid crystal (LC) display panel is disclosed. The transparent illuminator includes a light source and a transparent lightguide, which may be based on a slab of transparent material with zigzag light propagation of the illuminating light in the slab and/or a transparent photonic integrated circuit with singlemode ridge waveguides for spreading the illuminating light in a plane parallel to the plane of LC display panel. The lightguide includes a plurality of grating out-couplers whose position is coordinated with positions of LC pixels for higher throughput. A reflective offset-to-angle optical element may be provided to form an image in angular domain through the LC panel and through the transparent illuminator, resulting in an overall compact and efficient display configuration.

公开(公告)号：US11650426B2

公开(公告)日：2023-05-16

申请号：US16854667

申请日：2020-04-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Qi Zhang ,  Gang Li ,  Robin Sharma ,  Gregory Olegovic Andreev ,  Andrew John Ouderkirk ,  Karol Constantine Hatzilias ,  Ying Geng

IPC: G02B5/32 ,  G02B27/01 ,  G02B27/42 ,  G02B27/00 ,  G03H1/04

CPC classification number: G02B27/0179 ,  G02B5/32 ,  G02B27/0081 ,  G02B27/0172 ,  G02B27/425 ,  G02B2027/0109 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B2027/0187 ,  G03H1/0402 ,  G03H2001/0413 ,  G03H2001/0439 ,  G03H2223/12 ,  G03H2223/24 ,  G03H2260/12

Abstract: Techniques disclosed herein relate generally to eye-tracking in near-eye display systems. One example of an eye illuminator for eye-tracking includes a substrate transparent to visible light, an array of light sources immersed in the substrate and configured to emit infrared light, and a holographic optical element conformally coupled to a surface of the substrate and encapsulated by an encapsulation layer. The holographic optical element is configured to transmit the visible light and diffract the infrared light emitted by the array of light sources to the eye of a user for eye-tracking.

公开(公告)号：US11579457B2

公开(公告)日：2023-02-14

申请号：US16858341

申请日：2020-04-24

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Jacques Gollier

IPC: G02B27/28 ,  F21V8/00 ,  G02B27/01 ,  H04N9/31 ,  G02B17/08

Abstract: A display device includes a light source, a spatial light modulator, and an optical assembly. The light source is configured to provide illumination light and the spatial light modulator is positioned to receive the illumination light. The optical assembly includes a first reflective surface with an aperture and a second reflective surface that is opposite to the first reflective surface. The optical assembly is positioned relative to the light source so that at least a first portion of the illumination light received by the optical assembly is reflected by the second reflective surface toward the first reflective surface, is reflected by the first reflective surface toward the second reflective surface, and is transmitted through the second reflective surface. A method performed by the display device is also disclosed.

公开(公告)号：US11416071B1

公开(公告)日：2022-08-16

申请号：US17220373

申请日：2021-04-01

Applicant: Meta Platforms Technologies, LLC

Inventor： Andrew John Ouderkirk ,  Jacques Gollier ,  Robin Sharma ,  Yusufu Njoni Bamaxam Sulai ,  Brian Wheelwright ,  Ying Geng ,  Alexander Sohn ,  Abbas Mehdi Kazmi

IPC: G09G5/00 ,  G06F3/01 ,  H04N5/33 ,  H04N5/225 ,  G06T7/20

Abstract: A backlight device includes a first surface and a second surface that is opposite to the first surface. The backlight device is configured to emit light in a first optical band through the second surface toward a display panel of a head-mounted display (HMD). The display panel is configured to convert the light from the backlight device to image light. The backlight device is transparent to light in a second optical band that is different than the first optical band. An eye tracking system illuminates an eyebox with light in the second optical band. A camera assembly positioned adjacent to the first surface of the backlight device. The camera assembly is configured to capture images of the eye in the second optical band through the backlight device, the display panel. The eye tracking system determines eye tracking information based at least in part on the captured images.

公开(公告)号：US12204107B2

公开(公告)日：2025-01-21

申请号：US17553635

申请日：2021-12-16

Applicant: Meta Platforms Technologies, LLC

Inventor： Fenglin Peng ,  Jacques Gollier ,  Liangyu Qiu ,  Xingzhou Tu ,  Ying Geng

IPC: G02B27/01 ,  G02B26/08 ,  G02B27/09

Abstract: An illuminator for a display panel includes a slab of transparent material for propagating illuminating light between outer surfaces of the slab, an out-coupling grating supported by the slab for out-coupling portions of the illuminating light along one of the outer surfaces of the slab, and an amplitude and/or phase mask for forming an array of light spots from the out-coupled illuminating light portions downstream of the focusing element for illuminating pixels of the display panel. The array of light spots may be repeated at a distance from the mask due to Talbot effect. A beam redirecting element such as a tiltable reflector and/or a steering surface may be provided to shift the lateral location of the illuminating light spots.

公开(公告)号：US12130450B1

公开(公告)日：2024-10-29

申请号：US17163150

申请日：2021-01-29

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Yang Zhao ,  Ying Geng ,  Jacques Gollier ,  Douglas Robert Lanman

IPC: G02B27/01 ,  G02B3/08 ,  G02B27/42

CPC classification number: G02B3/08 ,  G02B27/4211

Abstract: An optical assembly includes a Fresnel lens and a diffractive optical element. The Fresnel lens includes a high-refractive-index material having a refractive index greater than 1.9. The diffractive optical element is optically coupled with the Fresnel lens to compensate for chromatic aberration caused by the Fresnel lens. A method for imaging light with the optical assembly is also disclosed.

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.