公开(公告)号：US20240027748A1

公开(公告)日：2024-01-25

申请号：US17872943

申请日：2022-07-25

Applicant: Meta Platforms Technologies, LLC

Inventor： Daniel Guenther GREIF ,  Brian WHEELWRIGHT ,  Jacques GOLLIER

IPC: G02B26/10 ,  G02B26/08 ,  G02B27/01 ,  F21V8/00

CPC classification number: G02B26/101 ,  G02B26/0833 ,  G02B27/0172 ,  G02B6/0031 ,  G02B2027/0178

Abstract: A scanning projector of a near-eye display device may be coupled to a waveguide and include a multi-ridge light source to provide a light beam. A distance between ridges of the light source may be larger than one pixel and the ridges may be aligned horizontally, vertically, or at an angle. A two-dimensional (2D) beam scanner optically coupled to the light source may generate a light field by performing a biresonant scan of the light beam. The projector may also include or be coupled to a controller to cause the beam scanner to scan the light beam about a first axis and a second axis within a field of view following a coherent Lissajous pattern while varying a brightness of the light beam to provide the image.