US 12,436,102 B2
Detecting device and measuring device
Tetsuya Yamamoto, Suwa (JP); and Takefumi Fukagawa, Suwa-gun (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Nov. 29, 2021, as Appl. No. 17/537,044.
Claims priority of application No. 2020-198132 (JP), filed on Nov. 30, 2020; and application No. 2021-059781 (JP), filed on Mar. 21, 2021.
Prior Publication US 2022/0170852 A1, Jun. 2, 2022
Int. Cl. G01N 21/359 (2014.01); A61B 5/1455 (2006.01); A61B 5/1495 (2006.01)
CPC G01N 21/359 (2013.01) [A61B 5/1455 (2013.01); A61B 5/1495 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A detecting device, comprising:
a first light-emitting unit that emits first light having a green wavelength band;
a second light-emitting unit that emits second light having a wavelength band higher than the wavelength band of the green wavelength band;
a first light-receiving unit that receives the first light emitted from the first light-emitting unit after propagating through biological body;
a second light-receiving unit that receives the second light emitted from the second light-emitting unit after propagating through the biological body;
a detection surface that is configured to contact a surface of the biological body; and
a first light-shielding wall provided between (i) the first light-emitting unit and the second light-emitting unit and (ii) the first light-receiving unit, the first light-shielding wall being configured to block a part of the first light and the second light, wherein
the first light-receiving unit includes a bandpass filter that selectively transmits the first light,
a distance from the first light-emitting unit to the first light-receiving unit is shorter than a distance from the second light-emitting unit to the second light-receiving unit, and
a leading end portion of the first light-shielding wall protrudes from the detection surface.