公开(公告)号：US20230236351A1

公开(公告)日：2023-07-27

申请号：US18129656

申请日：2023-03-31

Applicant: Meta Platforms Technologies, LLC

Inventor： Zhujun Shi ,  Keith Patterson ,  Maxwell Parsons ,  Yongdan Hu ,  Giuseppe Calafiore ,  Zhimin Shi

IPC: F21V8/00 ,  G02F1/1343

CPC classification number: G02B6/0036 ,  G02F1/13439 ,  G02F1/134309 ,  G02B6/0078 ,  G02F2201/302 ,  G02F2201/063

Abstract: A self-lit display panel includes a photonic integrated circuit payer including an array of waveguides and an array of out-couplers for out-coupling portions of the illuminating light through pixels of the panel. The self-lit display panel may include a transparent electronic circuitry layer backlit by the photonic integrated circuit layer; the two layers may be on a same substrate or on opposed substrates defining a cell filled with an electro-active material. The configuration allows for chief ray engineering, zonal illuminating, and separate illumination with red, green, and blue illuminating light.

公开(公告)号：US11609370B2

公开(公告)日：2023-03-21

申请号：US17485061

申请日：2021-09-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Alexander Koshelev ,  Giuseppe Calafiore

IPC: F21V8/00 ,  G02B27/10 ,  G02B27/01 ,  G02B6/124 ,  G02B27/09 ,  G02B6/12 ,  G02B6/125 ,  G02B6/28

Abstract: A waveguide illuminator includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-couplers out-coupling portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. Locations of the array of out-couplers are coordinated with locations of individual pixels of the display panel, causing each light beam portion to propagate through a corresponding pixel of the display panel, thereby improving efficiency of light utilization by the display panel.

公开(公告)号：US11550083B2

公开(公告)日：2023-01-10

申请号：US16909573

申请日：2020-06-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Giuseppe Calafiore

IPC: G02B5/18 ,  F21V8/00 ,  G02B27/01

Abstract: A surface-relief grating comprises a plurality of grating ridges including a first material, and a layer of a second material conformally deposited on surfaces of the plurality of grating ridges. A first region of the surface-relief grating is characterized by a first grating depth and a first duty cycle greater than a first threshold value. A second region of the surface-relief grating is characterized by a second grating depth and a second duty cycle lower than a second threshold value that is lower than the first threshold value. A difference between the first grating depth and the second grating depth is less than 20% of the second grating depth.

公开(公告)号：US11543584B2

公开(公告)日：2023-01-03

申请号：US17364678

申请日：2021-06-30

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Giuseppe Calafiore ,  Tingling Rao ,  Ankit Vora ,  Peter Topalian

IPC: G03F7/00 ,  F21V8/00

Abstract: The disclosure provides high refractive index ceramic material nanoimprint lithography (NIL) gratings having a relatively lower amount of carbon compared to traditional NIL gratings, and methods of making and using thereof, and devices including such gratings. The ceramic material includes one or more of titanium oxide, zirconium oxide, hafnium oxide, tungsten oxide, zinc tellurium, gallium phosphide, or any combination or derivative thereof.

公开(公告)号：US20220350100A1

公开(公告)日：2022-11-03

申请号：US17374932

申请日：2021-07-13

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jonathan Robert Peterson ,  John Goward ,  Maik Andre Scheller ,  Andrew John Ouderkirk ,  Christopher Yuan Ting Liao ,  Giuseppe Calafiore ,  Alexander Koshelev

IPC: G02B6/42 ,  G02B26/08 ,  G02B5/30

Abstract: A device includes a light source to emit light and a light detector to receive the light emitted by the light source. The device may include a high voltage optical transformer and may be configured such that the light detector is laterally spaced away from the light source. In some architectures, the light source and the light detector may be arranged in a common plane. A photonic integrated circuit may be used to couple light emitted from the light source to the light detector.