US 12,004,721 B2
Endoscope, program, and information processing method
Yoshiyuki Niijima, Tokyo (JP); Yoshihiro Hayashi, Tokyo (JP); Yukari Akino, Tokyo (JP); and Shinya Shimotashiro, Tokyo (JP)
Assigned to HOYA CORPORATION, Tokyo (JP)
Appl. No. 17/795,011
Filed by HOYA CORPORATION, Tokyo (JP)
PCT Filed Jul. 28, 2021, PCT No. PCT/JP2021/027837
§ 371(c)(1), (2) Date Jul. 25, 2022,
PCT Pub. No. WO2022/064834, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 2020-160962 (JP), filed on Sep. 25, 2020.
Prior Publication US 2023/0089085 A1, Mar. 23, 2023
Int. Cl. A61B 1/06 (2006.01); G02B 23/26 (2006.01)
CPC A61B 1/06 (2013.01) [G02B 23/26 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An endoscope comprising:
an imaging unit provided in a distal tip of an insertion tube to image an observation spot via an objective lens;
a first light output unit disposed around the objective lens to output first illumination light for illuminating the observation spot;
a second light output unit disposed around the objective lens to output second illumination light for illuminating the observation spot in a wavelength range wider than that of the first illumination light in an angular range larger than that of the first light output unit; and
a light amount control unit controlling an amount of light output from each of the first light output unit and the second light output unit,
wherein the light amount control unit:
derives a photometric value in an area of the observation spot corresponding to each of the angular ranges of the first light output unit and the second light output unit based on imaging data about the observation spot output from the imaging unit;
derives the amount of light from each of the first light output unit and the second light output unit based on the derived photometric value; and
causes each of the first light output unit and the second light output unit to output illumination light based on the derived amount of light.