公开(公告)号：US20220299769A1

公开(公告)日：2022-09-22

申请号：US17522220

申请日：2021-11-09

Applicant: GOOGLE LLC

Inventor： Daniel J. Effinger ,  Benjamin Wales

IPC: G02B27/01 ,  F21V8/00 ,  H01S5/40 ,  H01S5/02251 ,  H01S5/02253

Abstract: A light engine includes multiple laser diodes, each configured to emit laser light, and a light source unit having multiple channels, each of the channels is associated with one of the laser diodes and configured to transmit the laser light emitted from the corresponding laser diode. The channels may be, for example, fiber optic strands or optical pathways within a channeled lightguide. The light engine further includes a ferrule coupled to the light source unit and configured to receive the laser light from the light source unit and to output a collimated beam of laser light comprising each wavelength of laser light emitted by the laser diodes.

公开(公告)号：US20250004289A1

公开(公告)日：2025-01-02

申请号：US18697661

申请日：2022-09-29

Applicant: Google LLC

Inventor： Aurelien Jean Francois David ,  Benjamin Wales ,  Bergen Albert Fletcher ,  Daniel Adema ,  Daniel J. Effinger ,  Vance R. Morrison ,  Patrick F. Brinkley ,  Ian Andrews ,  Stuart James Myron Nicholson ,  Shreyas Potnis

IPC: G02B27/10 ,  G02B26/08 ,  G02B27/01 ,  G02B27/12

Abstract: A display system includes one or more low-power laser diodes, each producing an emission. The emissions are directed to an optical element that affects the direction or divergence of the emissions. The optical element redirects the emissions toward a steering element such as a MEMS-actuated mirror, or a combination of such mirrors. The steering element directs the emissions toward the incoupler of a waveguide acting as an optical combiner. The emissions propagate through the waveguide and are extracted by an outcoupler in the direction of an observer. By scanning the direction of the beam-steering element along one or several directions, an image may be formed.