公开(公告)号：US20240055569A1

公开(公告)日：2024-02-15

申请号：US17819903

申请日：2022-08-15

Applicant: Meta Platforms Technologies, LLC

Inventor： Salim BOUTAMI ,  Guillaume LHEUREUX ,  Sophia Antonia FOX ,  Yong Tae MOON

IPC: H01L33/60

CPC classification number: H01L33/60

Abstract: Disclosed herein are techniques for micro-light emitting diodes (micro-LEDs). According to certain embodiments, a micro-LED device includes a micro-LED comprising a semiconductor mesa structure configured to emit light, a spacer layer on the micro-LED, and a micro-lens on the spacer layer and configured to extract and collimate the light emitted by the micro-LED, where a thickness of the spacer layer is selected such that a focal point of the micro-lens is at a front surface of the semiconductor mesa structure.

公开(公告)号：US20230307593A1

公开(公告)日：2023-09-28

申请号：US17703616

申请日：2022-03-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Salim BOUTAMI ,  Jeomoh KIM

IPC: H01L33/60 ,  H01L33/62 ,  G02B27/01

CPC classification number: H01L33/60 ,  H01L33/62 ,  G02B27/0172 ,  G02B2027/0178

Abstract: A micro-light emitting diode (micro-LED) device includes semiconductor mesa structures, and waveguides and grating couplers in regions of a semiconductor layer between the semiconductor mesa structures. At least some light emitted in the active region of each semiconductor mesa structure can be coupled into and guided by a waveguide towards a grating coupler. The grating coupler is configured to diffract the guided light out of the micro-LED device, for example, in a direction substantially perpendicular to the light-emitting surface of the micro-LED device, through regions between the semiconductor mesa structures.

公开(公告)号：US20240369352A1

公开(公告)日：2024-11-07

申请号：US18384660

申请日：2023-10-27

Applicant: Meta Platforms Technologies, LLC

Inventor： Salim BOUTAMI ,  Mantas ZURAUSKAS ,  Scott Charles MCELDOWNEY

IPC: G01B11/25 ,  G01B11/22 ,  H04N13/254

Abstract: According to examples, a system for implementing structured polarized illumination techniques to determine and reconstruct a shape and a material property of an object is described. The system may include a light source to transmit an original beam of light; a first grating to diffract the original beam of light into a first light beam and a second light beam, a second grating to emit overlapping light beams towards an object, a polarization camera to capture light reflected from the object, and a computer system, comprising a processor and a non-transitory computer-readable storage medium having an executable stored thereon. The processor, when executing the instructions, may cause the system to analyze the light reflected from the object to determine a fringe projection analysis associated with the object, determine a shape of the object; and determine a Mueller matrix to describe material properties of the object.