US 12,405,217 B2
Compact device for characterizing a photoluminescent substance
Benoit Racine, Grenoble (FR); Pierre Blandin, Grenoble (FR); and Etienne Quesnel, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Filed on Dec. 14, 2021, as Appl. No. 17/644,113.
Claims priority of application No. 20 13407 (FR), filed on Dec. 16, 2020.
Prior Publication US 2022/0187206 A1, Jun. 16, 2022
Int. Cl. G01N 21/64 (2006.01); H10F 55/255 (2025.01); H10F 77/30 (2025.01); H10F 77/50 (2025.01); H10K 59/60 (2023.01); H10K 59/80 (2023.01)
CPC G01N 21/6445 (2013.01) [G01N 21/6428 (2013.01); H10F 55/255 (2025.01); H10F 77/337 (2025.01); H10F 77/50 (2025.01); H10K 59/60 (2023.02); G01N 2021/6439 (2013.01); G01N 2021/6471 (2013.01); G01N 2021/6482 (2013.01); H10K 59/873 (2023.02)] 9 Claims
OG exemplary drawing
 
1. A device for characterizing a substance capable of emitting a photoluminescence radiation in a first spectral range, the device comprising:
an electroluminescent component, at least semi-transparent in the first spectral range, and comprising first and second opposite surfaces, the first surface being intended to be oriented towards the substance, the electroluminescent component being designed to emit an excitation radiation outgoing from the first and second surfaces, the excitation radiation being emitted in a second spectral range according to a circular polarization state, the excitation radiation being designed to excite the substance so that the substance can emit the photoluminescence radiation;
a polarization filter, arranged to filter the excitation radiation outgoing from the second surface of the electroluminescent component, and designed to modify the circular polarization state so as to obtain an extinguishing of the excitation radiation outgoing from the second surface of the electroluminescent component;
a detector, arranged to detect the photoluminescence radiation outgoing from the polarization filter.