US 11,849,922 B2
Light source device
Yoshihito Tanaka, Yamanashi (JP); and Kiyotaka Murakami, Tokyo (JP)
Assigned to ARS Co., Ltd., Yamanashi (JP); and SBI Pharmaceuticals Co., Ltd., Tokyo (JP)
Appl. No. 17/299,667
Filed by ARS Co., Ltd., Yamanashi (JP); and SBI Pharmaceuticals Co., Ltd., Tokyo (JP)
PCT Filed Sep. 4, 2020, PCT No. PCT/JP2020/033528
§ 371(c)(1), (2) Date Dec. 22, 2022,
PCT Pub. No. WO2021/145019, PCT Pub. Date Jul. 22, 2021.
Claims priority of application No. 2020-088504 (JP), filed on May 20, 2020.
Prior Publication US 2023/0190085 A1, Jun. 22, 2023
Int. Cl. A61B 1/06 (2006.01); A61N 5/067 (2006.01); A61B 1/04 (2006.01); A61N 5/06 (2006.01); F21V 8/00 (2006.01); G02B 23/24 (2006.01); A61B 1/07 (2006.01)
CPC A61B 1/0684 (2013.01) [A61B 1/04 (2013.01); A61B 1/0638 (2013.01); A61B 1/07 (2013.01); A61N 5/062 (2013.01); A61N 5/067 (2021.08); G02B 6/0006 (2013.01); G02B 23/2469 (2013.01); A61N 2005/063 (2013.01); A61N 2005/0651 (2013.01); A61N 2005/0663 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A light source system comprising:
a first light emitting diode (LED) light source emitting a first light beam;
a first concentrator comprising a first pair of Fresnel lenses with corrugated surfaces and concentrating the first light beam, the corrugated surfaces of the Fresnel lenses facing each other;
a second LED light source emitting a second light beam having a wavelength different from that of the first light beam;
a second concentrator comprising a second pair of Fresnel lenses with corrugated surfaces and concentrating the second light beam, the corrugated surfaces of the Fresnel lenses facing each other;
a beam splitter splitting the first concentrated light beam from the first concentrator and the second concentrated light beam from the second concentrator; and
a light guide guiding the split light beams, wherein
one end of the light guide is disposed substantially at a focal point of the first concentrated light beam and the second concentrated light beam that are reflected at and/or transmitted through the beam splitter so as to be collimated.