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.

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.