US 11,989,969 B2
Biometric information imaging device
Zhinong Li, East Brunswick, NJ (US); and Xiaowu Zhang, East Brunswick, NJ (US)
Assigned to ZKTECO USA, Alpharetta, GA (US)
Filed by ZKTeco USA, Alpharetta, GA (US)
Filed on Jun. 16, 2021, as Appl. No. 17/349,409.
Claims priority of provisional application 63/044,527, filed on Jun. 26, 2020.
Prior Publication US 2021/0406572 A1, Dec. 30, 2021
Int. Cl. H04N 5/225 (2006.01); G02B 5/00 (2006.01); G06V 40/10 (2022.01); G06V 40/13 (2022.01); G06V 40/145 (2022.01); H04N 23/55 (2023.01); H04N 23/56 (2023.01); G06V 40/14 (2022.01)
CPC G06V 40/145 (2022.01) [G02B 5/003 (2013.01); G06V 40/10 (2022.01); G06V 40/1318 (2022.01); H04N 23/55 (2023.01); H04N 23/56 (2023.01); G06V 40/14 (2022.01)] 15 Claims
OG exemplary drawing
 
1. A biometric information imaging module for imaging palm veins comprising:
a housing with a cover attached to a top of the housing;
a lens assembly comprising a lens for taking images provided in the housing, the lens assembly being attached to a first circuit board;
a light shielding structure provided around at least part of the lens of the lens assembly for shielding the lens from light reflected from the cover, the light shielding structure being connected to a second circuit board;
an image sensor to convert light focused by the lens assembly to photoelectric conversion to an electrical signal;
one or more light sources for providing light attached to the second circuit board; and
a lamp cup assembly provided around each light source and attached to the second circuit board,
wherein each lamp cup assembly guides the light emitted from the one or more light sources in a particular direction, and
wherein the light shielding structure shields the lens from the light of the one or more light sources.