Patent ID: 11914073
Assignee: SHENZHEN GUANGJIAN TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A light projecting system, comprising a projector lens, a waveguide, and a set of grating structures, wherein:
the waveguide comprises at least one surface;
the set of grating structures are disposed on the at least one surface;
the projector lens is disposed above the set of grating structures;
the waveguide is configured to guide an in-coupled light beam to travel along the waveguide;
the set of grating structures are configured to couple at least a portion of the in-coupled light beam out of the waveguide from the at least one surface respectively in different directions to reach the projector lens, the portion of the in-coupled light beam coupled out of the waveguide forming out-coupled light beams; and
the projector lens is configured to project the out-coupled light beams away from the waveguide.