US 12,292,590 B2
Light source module
Yasuhiro Fujimoto, Setouchi (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 18/564,408
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed May 25, 2022, PCT No. PCT/JP2022/021443
§ 371(c)(1), (2) Date Nov. 27, 2023,
PCT Pub. No. WO2022/250092, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. 2021-090062 (JP), filed on May 28, 2021.
Prior Publication US 2024/0255686 A1, Aug. 1, 2024
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0006 (2013.01) [G02B 6/0008 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light source module, comprising:
a first light emitter configured to emit light with a first wavelength;
a second light emitter configured to emit light with a second wavelength different from the first wavelength;
a third light emitter configured to emit light with a third wavelength different from the first wavelength and the second wavelength;
a cladding; and
a core in the cladding, the core having a constant height, including
a first waveguide configured to transmit light emitted from the first light emitter,
a second waveguide configured to transmit light emitted from the second light emitter,
a third waveguide configured to transmit light emitted from the third light emitter,
a merging portion in which at least two waveguides of the first waveguide, the second waveguide, or the third waveguide merge, and
an emission portion at one end of the merging portion,
wherein each of the at least two waveguides includes a first portion configured to receive incident light and a second portion adjacent to the merging portion, and the first portion has a greater width than the second portion.