US 12,265,013 B2
Particle detection sensor and particle detector
Daiki Naruse, Fukuyama (JP); Toshiya Fujiyama, Fukuyama (JP); Hirokazu Sasabe, Fukuyama (JP); Yoshifumi Masuda, Fukuyama (JP); Mitsutoshi Okami, Fukuyama (JP); and Noboru Takeuchi, Fukuyama (JP)
Assigned to Sharp Semiconductor Innovation Corporation, Tenri (JP)
Filed by Sharp Semiconductor Innovation Corporation, Tenri (JP)
Filed on Aug. 11, 2023, as Appl. No. 18/233,063.
Application 18/233,063 is a continuation of application No. 17/483,622, filed on Sep. 23, 2021, granted, now 11,774,345.
Claims priority of application No. 2020-166199 (JP), filed on Sep. 30, 2020.
Prior Publication US 2023/0384207 A1, Nov. 30, 2023
Int. Cl. G01N 15/1434 (2024.01); G01N 21/53 (2006.01)
CPC G01N 15/1436 (2013.01) [G01N 21/53 (2013.01)] 7 Claims
OG exemplary drawing
 
5. A particle detection sensor that is disposed on a substrate to detect particles in a gas, the particle detection sensor comprising:
a light source member disposed on the substrate;
a condensing lens disposed between the substrate and the light source member that emits light;
a photodetector disposed on the substrate and beneath the condensing lens; and
a holder covering the condensing lens and the photodetector, wherein
the light source member includes a light source and a projection lens on the substrate,
the light source is disposed on the substrate to emit the light toward the projection lens,
the holder includes a hole and limits the light that passes through the condensing lens,
the hole is narrower than a directivity of the condensing lens and the photodetector,
the substrate has a through-hole,
the photodetector extends through the through-hole, and
the condensing lens and the photodetector, that are integrated together, protrude from the through-hole at each of one side of the substrate and another side of the substrate.