Patent ID: 11933969
Assignee: MEGA1 COMPANY LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical engine module, comprising:
at least two laser sources configured to respectively generate at least two laser beams with different wavelengths;
a plurality of collimators for collimating the at least two laser beams to generate at least two collimated beams, respectively;
a light combining lens group for combining the at least two collimated beams into a combined beam, wherein the combined beam has a first light shape, and the first light shape is an ellipse having a first length in a first major axis direction and a second length in a first minor axis direction;
an aperture having a light hole for filtering out stray beams of the combined beam;
a beam shaping lens group for shaping the first light shape of the combined beam along the first minor axis direction to generate a shaped beam having a second light shape, wherein the second light shape is a perfect circle, and the first length is used as a diameter of the perfect circle;
a microelectromechanical system (MEMS) scanning module for reflecting the shaped beam and scanning in a horizontal direction and a vertical direction to form a scanning beam; and
a beam expansion lens group for expanding the scanning beam into an expanded beam having a predetermined area.