公开(公告)号：US11579089B2

公开(公告)日：2023-02-14

申请号：US17119272

申请日：2020-12-11

Applicant: JASCO CORPORATION

Inventor： Kento Aizawa ,  Takeo Soejima ,  Tsutomu Inoue

IPC: G01N21/64 ,  G01N21/65 ,  G02B21/16 ,  G02B21/12 ,  G01N21/88

Abstract: A filter unit for a Raman microscope mounted with a dark-field objective lens unit includes a frame body, a plurality of UV-LED elements that is disposed around a window part of the frame body to emit UV light, and a long-pass filter that is supported to the frame body to cover the window part of the frame body and transmits a light having a wavelength longer than the wavelength of the UV light. The filter unit has a dark-field UV irradiation function, and is able to impart a fluorescence observation function to the Raman microscope.