US 11,940,534 B2
Detection device and detection unit
Michiaki Shinotsuka, Kanagawa (JP)
Assigned to Ricoh Company, Ltd., Tokyo (JP)
Filed by Michiaki Shinotsuka, Kanagawa (JP)
Filed on Sep. 22, 2021, as Appl. No. 17/448,395.
Claims priority of application No. 2020-160574 (JP), filed on Sep. 25, 2020; and application No. 2021-136080 (JP), filed on Aug. 24, 2021.
Prior Publication US 2022/0099832 A1, Mar. 31, 2022
Int. Cl. G01S 17/04 (2020.01); A01M 1/02 (2006.01); A01M 1/04 (2006.01); A01M 31/00 (2006.01); G01S 7/481 (2006.01)
CPC G01S 17/04 (2020.01) [G01S 7/4813 (2013.01); G01S 7/4815 (2013.01); A01M 1/026 (2013.01); A01M 1/04 (2013.01); A01M 31/002 (2013.01)] 12 Claims
OG exemplary drawing
 
9. A detection unit, comprising:
a detection device;
a first light source provided in the detection device and configured to emit a first light in a first direction;
a second light source provided in the detection device and configured to emit a second light in a second direction different from the first direction;
a light receiver provided in the detection device and configured to receive one of a first reflected light of the first light and a second reflected light of the second light;
a black shielding plate to surround a light source substrate including the first light source, the second light source, and the light receiver;
an outer housing provided in the detection device and configured to surround the black shielding plate;
a transparent member provided in the detection device and configured to pass the first light and the second light to outside of the outer housing;
an outer housing provided in the detection device and including a first window at a position corresponding to the transparent member;
a detection box;
a second window disposed in the detection box at a position facing the first window;
an opening provided in the detection box and configured to allow an object to enter the detection box; and
a lid provided in the detection box and configured to detect that the object enters the detection box and to close the opening.