公开(公告)号：US11675192B2

公开(公告)日：2023-06-13

申请号：US16800886

申请日：2020-02-25

Applicant: Meta Platforms Technologies, LLC

Inventor： Tamer Mohamed Tawfik Ahmed Mohamed Elazhary ,  Michael Patrick Schaub ,  Byron Taylor

IPC: G02B27/01 ,  G02B27/42 ,  F21V8/00

CPC classification number: G02B27/0172 ,  G02B6/0016 ,  G02B27/4205 ,  G02B2027/0138 ,  G02B2027/0178

Abstract: A multi-functional diffractive optical element (DOE) for redirecting light into a waveguide and providing higher order aberration correction is described. The multi-functional DOE may be positioned on, connected to, adjacent to, or within a waveguide, and in some examples is positioned at, or near, the exit pupil of the projector lens. In an example, a head-mounted display (HMD) is configured to output artificial reality content, comprising a waveguide configured to receive input light and configured to output the received input light to an eyebox. The HMD further comprises a projector configured to input light into the waveguide, the projector comprising a display, a projection lens, and a multi-functional diffractive optical element (DOE) configured to redirect light from the projector into the waveguide and provide higher order aberration correction of the light from the display.

公开(公告)号：US11863886B2

公开(公告)日：2024-01-02

申请号：US17591300

申请日：2022-02-02

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Andrew Samuel Berkovich ,  Xinqiao Liu ,  Song Chen ,  Nicholas Daniel Trail ,  Michael Patrick Schaub

IPC: H04N25/58 ,  H03M1/18 ,  H04N25/59

CPC classification number: H04N25/58 ,  H03M1/18 ,  H04N25/59

Abstract: In one example, an apparatus comprises: multiple distinct sets of photodiodes, wherein each set of photodiodes includes one or more photodiodes, one or more charge sensing units, and a controller. The controller is configured to: transfer charge generated by the one or more photodiodes in response to a different component of incident light to the one or more charge sensing units in order to convert the charge to voltages; perform one or more quantization processes of a plurality of quantization processes corresponding to a plurality of intensity ranges, wherein the one or more quantization processes quantizes the voltages from the one or more charge sensing units to digital values representing components of a pixel of different wavelength ranges; and generate a pixel value based on the at least some of the digital values.

公开(公告)号：US11598966B2

公开(公告)日：2023-03-07

申请号：US17217107

申请日：2021-03-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Michael Patrick Schaub ,  Byron Taylor ,  Yijing Fu

IPC: G02B26/08 ,  G02B27/01 ,  G02B26/10

Abstract: A light projection system includes a light source configured to emit image light and an optical assembly configured to provide positive optical power to the image light and optically correct the image light. The optical assembly comprises a plurality of optical elements configured to correct differential distortion related to the image light across a field of view (FOV) within a threshold amount. The differential distortion is corrected based in part on asymmetry of the plurality of optical elements relative to an optical axis shared by the plurality of optical elements.

公开(公告)号：US11850811B1

公开(公告)日：2023-12-26

申请号：US16696934

申请日：2019-11-26

Applicant: Meta Platforms Technologies, LLC

Inventor： Kurt Allen Jenkins ,  Chad Lichtenhan ,  Michael Patrick Schaub ,  Byron Taylor

IPC: B29D11/00 ,  G02B13/00 ,  G02B27/01 ,  B29C35/08

CPC classification number: B29D11/00403 ,  B29C35/0805 ,  B29D11/00442 ,  G02B13/006 ,  G02B27/0172 ,  B29C2035/0827

Abstract: A method of fabricating a lens includes dispensing a first liquid optically-transmissive material into a first mold cavity and then curing the first liquid optically-transmissive material to form a first region the lens having a first refractive index and an optical interface surface. A second liquid optically-transmissive material then dispensed into a second mold cavity over the optical interface surface while the first region of the lens is disposed within the second mold cavity. The second liquid optically-transmissive material in the second mold cavity is cured to form a second region of the lens having a second refractive index. An optical interface between the first region and the second region conforms to the optical interface surface.

公开(公告)号：US11458699B2

公开(公告)日：2022-10-04

申请号：US16706859

申请日：2019-12-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Kurt Allen Jenkins ,  Chad Lichtenhan ,  Michael Patrick Schaub ,  Byron Taylor

IPC: B29D11/00 ,  G02B1/04 ,  G06F1/16

Abstract: A lens assembly includes a tube in which optical elements such as lenses or micro-lenses are individually fabricated by dispensing a volume of curable optical polymer into the tube, forming the desired shape for the optical element using one or more plungers having heads corresponding to a desired lensing curvature, applying radiant energy to the tube with the plungers in place to cure the optical polymer, and repeating as needed until the desired number of optical elements are fabricated within the lens assembly which may then be integrated as a single piece into a mobile or wearable device.