US 12,248,072 B2
Electromagnetic wave detection apparatus and information acquisition system
Eri Takeuchi, Yokohama (JP)
Assigned to KYOCERA Corporation, Kyoto (JP)
Appl. No. 17/258,784
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Jul. 17, 2019, PCT No. PCT/JP2019/028105
§ 371(c)(1), (2) Date Jan. 8, 2021,
PCT Pub. No. WO2020/022146, PCT Pub. Date Jan. 30, 2020.
Claims priority of application No. 2018-141356 (JP), filed on Jul. 27, 2018.
Prior Publication US 2021/0302589 A1, Sep. 30, 2021
Int. Cl. G01S 17/894 (2020.01); G01S 7/481 (2006.01); G02B 5/20 (2006.01)
CPC G01S 17/894 (2020.01) [G01S 7/4817 (2013.01); G02B 5/208 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electromagnetic wave detection apparatus comprising:
a first transmission unit having a transmittance of electromagnetic waves in a first wavelength band larger than a transmittance of electromagnetic waves in a wavelength band other than the first wavelength band;
a second transmission unit having a transmittance of electromagnetic waves in a second wavelength band larger than a transmittance of electromagnetic waves in a wavelength band other than the second wavelength band;
a third transmission unit having a transmittance of electromagnetic waves smaller than that of the first transmission unit in the wavelength band other than the first wavelength band or a transmittance of electromagnetic waves smaller than that of the second transmission unit in the wavelength band other than the second wavelength band; and
a first detector configured to detect electromagnetic waves progressing via the first transmission unit, the second transmission unit, and the third transmission unit,
wherein the first wavelength band and the second wavelength band partially overlap with each other, and
the third transmission unit transmits electromagnetic waves having been transmitted through the first transmission unit and the second transmission unit.