公开(公告)号：US20240003814A1

公开(公告)日：2024-01-04

申请号：US18369447

申请日：2023-09-18

Applicant: NIKON CORPORATION

Inventor： Shota TSUCHIDA ,  Yasunori MORISHITA ,  Yuta OSHIDARI

IPC: G01N21/64 ,  G02B21/00

CPC classification number: G01N21/6458 ,  G02B21/0076 ,  G01N2021/6471

Abstract: A microscope includes: an illumination optical system which irradiates a specimen with excitation light; a detector which detects fluorescence emitted from the specimen; and an observation optical system which guides fluorescence to the detector and includes: a first optical filter having wavelength reflection and transmission characteristics that vary depending on where light enters; a second optical filter disposed in an optical path of light reflected by the first optical filter, having a boundary wavelength of transmission changing with respect to a position along a first direction, and transmitting light having a wavelength longer than a first boundary wavelength at where the reflected light enters; and a third optical filter disposed in the optical path and having a boundary wavelength of transmission changing with respect to a position along the first direction, and transmitting light having a wavelength shorter than a second boundary wavelength at where the reflected light enters.