公开(公告)号：US11933969B2

公开(公告)日：2024-03-19

申请号：US17333125

申请日：2021-05-28

Applicant: MEGA1 COMPANY LTD.

Inventor： Makoto Masuda ,  Han-Chiang Wu ,  Shan-Ling Yeh ,  Tzu-Chieh Lien

IPC: G02B26/08 ,  G02B26/10 ,  G02B27/09 ,  G02B27/10

CPC classification number: G02B26/101 ,  G02B26/0833 ,  G02B27/0955 ,  G02B27/108

Abstract: An optical engine module including at least two laser sources, collimators, a light combining lens group, an aperture, a beam shaping lens group, a MEMS scanning module, and a beam expansion lens group is provided. The at least two laser sources respectively generate at least two laser beams with different wavelengths. The collimators respectively collimate the at least two laser beams to generate at least two collimated beams. The light combining lens group combines the at least two collimated beams into a combined beam. The aperture filters stray beams of the combined beam. The beam shaping lens group shapes the combined beam to generate a shaped beam with a perfect circle. The MEMS scanning module reflects the shaped beam and scans in horizontal and vertical directions to form a scanning beam. The beam expansion lens group expands the scanning beam into an expanded beam having a predetermined area.