US 12,066,392 B2
Excitation light irradiating apparatus and excitation light irradiating method
Masateru Hashimoto, Komoro (JP); Yoshiharu Yoshii, Natori (JP); Yuki Takemura, Kyoto (JP); and Norikazu Mizuochi, Kyoto (JP)
Assigned to SUMIDA CORPORATION, (JP); and Kyoto University, (JP)
Appl. No. 17/922,500
Filed by SUMIDA CORPORATION, Tokyo (JP); and Kyoto University, Kyoto (JP)
PCT Filed Apr. 19, 2021, PCT No. PCT/JP2021/015814
§ 371(c)(1), (2) Date Oct. 31, 2022,
PCT Pub. No. WO2021/246064, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 2020-098052 (JP), filed on Jun. 4, 2020.
Prior Publication US 2023/0194448 A1, Jun. 22, 2023
Int. Cl. G01N 24/10 (2006.01); G01N 21/64 (2006.01); G02B 17/00 (2006.01)
CPC G01N 24/10 (2013.01) [G01N 21/64 (2013.01); G02B 17/004 (2013.01); G01N 2201/0636 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An excitation light irradiating apparatus, comprising:
a substrate that includes a color center to be excited by excitation light;
at least a pair of reflection members that are arranged with gaps from the substrate and have reflection surfaces, respectively; and
an irradiating device that emits the excitation light;
wherein the substrate causes the excitation light entering the substrate to exit through two surfaces of the substrate that face each other without reflection;
at least the pair of the reflection members causes the excitation light that exited the substrate to reflect at the reflection surface and enter the substrate and causes the excitation light to repeatedly enter and exit the substrate, and thereby causes the excitation light to pass through the substrate only a predetermined number of times; and
the irradiating device emits the excitation light such that the excitation light is incident to the reflection surface both with an angle perpendicular to one axis among two axes of the reflection surface and with a predetermined slant angle from the other axis among the two axes of the reflection surface.