公开(公告)号：US11160442B2

公开(公告)日：2021-11-02

申请号：US15922159

申请日：2018-03-15

Applicant: OLYMPUS CORPORATION

Inventor： Misa Tsuruta ,  Toshiaki Watanabe ,  Yuichi Takeuchi ,  Hiroki Uchiyama

IPC: A61B1/04 ,  A61B1/06 ,  G02B26/00 ,  G02B23/24 ,  A61B1/045 ,  A61B1/00 ,  A61B5/00 ,  G01N21/64

Abstract: An endoscope apparatus includes a spectroscopic section disposed on an optical axis of return light from an object irradiated with visible light, first excitation light and second excitation light including a longer wavelength than a wavelength of the first excitation light and configured to separate and emit the light of a second wavelength band other than light of a first wavelength band, a first excitation light cut filter configured to block a wavelength band of one of the first excitation light and the second excitation light included in the return light, and a second excitation light cut filter configured to block a wavelength band of another excitation light of the first excitation light and the second excitation light and a wavelength band of the visible light.