US 12,379,652 B2
Multicolor light mixing module
Jia-Ming Zhang, Taichung (TW); and Ching-Tze Huang, Taoyuan (TW)
Assigned to Qisda Corporation, Taoyuan (TW)
Filed by QISDA CORPORATION, Taoyuan (TW)
Filed on Jul. 14, 2023, as Appl. No. 18/221,887.
Claims priority of application No. 202211011602.8 (CN), filed on Aug. 23, 2022.
Prior Publication US 2024/0069421 A1, Feb. 29, 2024
Int. Cl. G03B 21/20 (2006.01)
CPC G03B 21/2033 (2013.01) [G03B 21/2013 (2013.01); G03B 21/208 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A multicolor light mixing module suitable for providing a multicolor laser beam to a laser projection apparatus, the multicolor light mixing module comprising:
a first laser set comprising a plurality of first lighting units and at least one second lighting unit, at least one of the plurality of first lighting units and the at least one second lighting unit being arranged symmetrically relative to a first symmetrical axis, the plurality of first lighting units emitting a first color light, the at least one second lighting unit emitting a second color light;
a light-mixing unit obliquely disposed on a first light-mixing axis and opposite to the plurality of first lighting units and the at least one second lighting unit, for reflecting the first color light and the second color light to cooperatively form a first laser beam along the first light-mixing axis;
a light-homogenizing member disposed on the first light-mixing axis for homogenizing the first laser beam; and
a condensing lens disposed on the first light-mixing axis and located between the light-homogenizing member and the light-mixing unit for condensing the first laser beam.