公开(公告)号：US20230161163A1

公开(公告)日：2023-05-25

申请号：US17995660

申请日：2021-04-07

Applicant: Snap Inc.

Inventor： James Leighton

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

CPC classification number: G02B27/0172 ,  G02B27/4272 ,  G02B6/0035 ,  G02B2027/0123

Abstract: Optical devices and methods for expanding input light and outputting the expanded light include a waveguide and an input optical element to receive light incident on a first side of the waveguide. The input optical element includes an input reflective surface to reflect the received light into the waveguide. An intermediate diffractive optical element receives light in the waveguide from a first direction, and provides an expansion of the received light in a second direction perpendicular to the first direction. An output optical element includes an output reflective surface to reflect the expanded light out of the waveguide towards a viewer. The waveguide guides light along an optical path from the input optical element to the intermediate diffractive optical element and from the intermediate diffractive optical element to the output optical element.

公开(公告)号：US20240411142A1

公开(公告)日：2024-12-12

申请号：US18812762

申请日：2024-08-22

Applicant: Snap Inc.

Inventor： Brennon Pennell ,  James Leighton ,  Nan Ma

IPC: G02B27/01 ,  G02B26/10 ,  G02B27/28

Abstract: A laser scanning projection system comprises a laser source configured to emit light towards a pair of polarizing beam splitters. The polarizing beam splitters direct light to reflect an odd number of times from a plurality of mirrors through one or more quarter waveplates, using a laser scanner comprising a scanning mirror to direct the light across an angular field of view, forming an exit pupil.

公开(公告)号：US20230152536A1

公开(公告)日：2023-05-18

申请号：US17995552

申请日：2021-04-07

Applicant: Snap Inc.

Inventor： James Leighton

IPC: G02B6/42 ,  G02B27/01

CPC classification number: G02B6/4206 ,  G02B6/4214 ,  G02B27/0172 ,  G02B27/017

Abstract: Optical devices and methods include a first waveguide having a first surface and a second waveguide including a second surface. The first waveguide is at a fixed position relative to the second waveguide with the first surface at least partly facing the second surface, and the first surface includes a first positioning element. The first positioning element is a NanoImprint Lithography (NIL) structure. The optical device further includes an adhesive arranged for attaching the first surface to the second surface, whereiu the first positioning element is arranged to control a position of the adhesive. The first positioning element includes a philic region adapted to attract the adhesive, or a phobic region adapted to repel the adhesive.

公开(公告)号：US12259586B2

公开(公告)日：2025-03-25

申请号：US17995552

申请日：2021-04-07

Applicant: Snap Inc.

Inventor： James Leighton

IPC: G02B6/42 ,  G02B27/01

Abstract: Optical devices and methods include a first waveguide having a first surface and a second waveguide including a second surface. The first waveguide is at a fixed position relative to the second waveguide with the first surface at least partly facing the second surface, and the first surface includes a first positioning element. The first positioning element is a NanoImprint Lithography (NIL) structure. The optical device further includes an adhesive arranged for attaching the first surface to the second surface, where the first positioning element is arranged to control a position of the adhesive. The first positioning element includes a philic region adapted to attract the adhesive, or a phobic region adapted to repel the adhesive.

公开(公告)号：US12196966B2

公开(公告)日：2025-01-14

申请号：US17595299

申请日：2020-05-21

Applicant: Snap Inc.

Inventor： Brennon Pennell ,  James Leighton ,  Nan Ma

IPC: G02B27/01 ,  G02B26/10 ,  G02B27/28

Abstract: A laser scanning projection system for use in illuminating a waveguide of an augmented reality or virtual reality headset is disclosed. The laser scanning projection system comprises a laser source configured to emit light towards a pair of polarising beam splitters. The polarising beam splitters direct light onto a plurality of mirrors through a plurality of quarter waveplates. The laser scanning projection system further comprises a waveguide having an input configured to receive the light such that the exit pupil formed at the laser scanner is relayed into the waveguide.