US 11,783,621 B2
Optical fingerprint imaging device
Ping-Chen Chen, Hsinchu (TW); Mon-Nan Ho, Hsinchu (TW); Chuan Min Lee, Hsinchu (TW); and Chung Hao Tseng, Hsinchu (TW)
Assigned to Gingy Technology Inc., Hsinchu (TW)
Filed by Gingy Technology Inc., Hsinchu (TW)
Filed on Nov. 18, 2022, as Appl. No. 17/989,693.
Claims priority of provisional application 63/281,092, filed on Nov. 19, 2021.
Prior Publication US 2023/0162527 A1, May 25, 2023
Int. Cl. G06V 40/13 (2022.01); H04N 23/55 (2023.01); G06V 10/147 (2022.01)
CPC G06V 40/1324 (2022.01) [G06V 10/147 (2022.01); H04N 23/55 (2023.01)] 19 Claims
OG exemplary drawing
 
1. An optical fingerprint imaging device, comprising:
a substrate;
an imaging module, disposed on the substrate;
at least one light emitting element, disposed on the substrate and surrounding the imaging module;
a light shielding element, disposed on the substrate and located between the imaging module and the at least one light emitting element;
a case, disposed on an edge of the substrate and surrounding the imaging module; and
a pressing substrate, disposed on the case and covering the imaging module, the at least one light emitting element, and the light shielding element, wherein the optical fingerprint imaging device satisfies conditional expressions of h≤H≤h+(R/tan(θ/2)) and Ravg<S<5Ravg, where h is a height from a field angle origin of the imaging module to an intersection in the imaging module to the substrate, H is a height of the light shielding element at a measurement position, R is a distance from a center of the imaging module to the measurement position of the light shielding element in a horizontal direction, θ is an angle of a field angle of the imaging module, Ravg is an average value of distances from the center of the imaging module to measurement positions of the light shielding element in the horizontal direction, and S is a distance from the center of the imaging module to a center of the at least one light emitting element in the horizontal direction.