US 12,352,626 B2
Raman spectroscopy device and Raman spectroscopy measurement method
Katsuya Nozawa, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/550,866
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 23, 2022, PCT No. PCT/JP2022/013656
§ 371(c)(1), (2) Date Sep. 15, 2023,
PCT Pub. No. WO2022/210192, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-060458 (JP), filed on Mar. 31, 2021.
Prior Publication US 2024/0219236 A1, Jul. 4, 2024
Int. Cl. G01J 3/44 (2006.01); G01N 21/65 (2006.01)
CPC G01J 3/44 (2013.01) [G01N 21/65 (2013.01); G01J 2003/4424 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A Raman spectroscopy device comprising:
an irradiator that irradiates a measurement target with first excitation light that has a first line width and second excitation light that has a second line width broader than the first line width;
a spectroscopy measurer that performs spectroscopy measurement on first measurement light and second measurement light that are incident on the spectroscopy measurer, the first measurement light being emitted from the measurement target when the measurement target is irradiated with the first excitation light, the second measurement light being emitted from the measurement target when the measurement target is irradiated with the second excitation light; and
a first selective optical system that has a first transmission band and a first stop band, and filters the first measurement light and the second measurement light that are incident on the spectroscopy measurer,
wherein the first excitation light and the second excitation light each have a main component in the first stop band, and
the second excitation light has substantially no component in the first transmission band.