US 12,192,609 B2
Light source device and endoscope system
Yoshihiro Hayashi, Tokyo (JP); Yoshiyuki Niijima, Tokyo (JP); Yukari Akino, Tokyo (JP); and Shinya Shimotashiro, Tokyo (JP)
Assigned to HOYA CORPORATION, Tokyo (JP)
Appl. No. 18/024,578
Filed by HOYA CORPORATION, Tokyo (JP)
PCT Filed Sep. 22, 2021, PCT No. PCT/JP2021/034781
§ 371(c)(1), (2) Date Mar. 3, 2023,
PCT Pub. No. WO2022/091649, PCT Pub. Date May 5, 2022.
Claims priority of application No. 2020-179317 (JP), filed on Oct. 27, 2020.
Prior Publication US 2023/0319386 A1, Oct. 5, 2023
Int. Cl. A61B 1/06 (2006.01); A61B 1/045 (2006.01); H04N 23/50 (2023.01); H04N 23/56 (2023.01); H04N 23/73 (2023.01)
CPC H04N 23/555 (2023.01) [H04N 23/56 (2023.01); H04N 23/73 (2023.01)] 15 Claims
OG exemplary drawing
 
1. A light source device that generates illumination light with which an object is irradiated, the light source device comprising:
a plurality of semiconductor light emitting elements that emit light beams having different wavelength bands from each other; and
a control unit that controls a light emission profile of the plurality of semiconductor light emitting elements and drives the plurality of semiconductor light emitting elements,
wherein the light emission profile includes a strong light emission period in which light emission is performed with a predetermined light intensity and a weak light emission period in which light emission is performed with a light intensity weaker than the predetermined light intensity, and
the control unit executes a restoration control process of converting a light emission amount in the weak light emission period into a light emission amount in the strong light emission period while maintaining a total amount of the light emission amount in the strong light emission period and the light emission amount in the weak light emission period constant.