US 11,982,036 B2
Light sensor device and domestic electrical appliance equipped therewith
Manfredi Signorino, Wackersdorf (DE); Martin Brabec, Nabburg (DE); Lukas Schade, Nabburg (DE); and Georg Spießl, Altendorf (DE)
Assigned to EMZ-HANAUER GMBH & CO. KGAA, Nabburg (DE)
Filed by emz-Hanauer GmbH & Co. KGaA, Nabburg (DE)
Filed on May 5, 2022, as Appl. No. 17/737,763.
Claims priority of application No. 102021111687.2 (DE), filed on May 5, 2021.
Prior Publication US 2022/0356627 A1, Nov. 10, 2022
Int. Cl. D06F 34/30 (2020.01); D06F 34/20 (2020.01); G01S 17/04 (2020.01)
CPC D06F 34/30 (2020.02) [D06F 34/20 (2020.02); G01S 17/04 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A light sensor device for a domestic electrical appliance, comprising:
a window element formed of a light-permeable material;
at least one infrared-light source element arranged to radiate infrared light through the window element from an interior side of the window element towards an exterior side thereof;
at least one infrared-sensitive photodetector element arranged to detect infrared light which strikes the photodetector element from the interior side of the window element; and
at least one visible-light source element arranged to radiate visible light into the window element from the interior side thereof;
wherein the at least one infrared-light source element and the at least one visible light-source element are mounted on opposite faces of a circuit board, wherein the window element is arranged adjacent to an edge of the circuit board to project beyond the circuit board on both faces thereof;
wherein the at least one infrared-light source element and the at least one infrared-sensitive photodetector element are mounted on a first face of a circuit board; and
wherein the at least one visible-light source element is mounted on a second face of the circuit board opposite the first face.