US 12,291,150 B2
Vehicular driver monitoring system with camera disposed behind prismatic mirror element of interior rearview mirror assembly
Austen C. Peterson, Hudsonville, MI (US)
Assigned to Magna Mirrors of America, Inc., Holland, MI (US)
Filed by Magna Mirrors of America, Inc., Holland, MI (US)
Filed on Sep. 1, 2023, as Appl. No. 18/459,515.
Claims priority of provisional application 63/377,536, filed on Sep. 29, 2022.
Claims priority of provisional application 63/374,425, filed on Sep. 2, 2022.
Claims priority of provisional application 63/374,263, filed on Sep. 1, 2022.
Prior Publication US 2024/0075878 A1, Mar. 7, 2024
Int. Cl. B60R 1/12 (2006.01); B60R 1/04 (2006.01); G06V 20/59 (2022.01)
CPC B60R 1/12 (2013.01) [G06V 20/597 (2022.01); B60R 1/04 (2013.01); B60R 2001/1253 (2013.01)] 38 Claims
OG exemplary drawing
 
1. A vehicular cabin monitoring system, the vehicular cabin monitoring system comprising:
an interior rearview mirror assembly comprising a mirror head adjustably disposed at a mounting structure, wherein the mounting structure is configured to attach at an interior portion of a vehicle equipped with the vehicular cabin monitoring system, and wherein the mirror head comprises a prismatic mirror reflective element;
a camera accommodated by the mirror head;
wherein the prismatic mirror reflective element comprises a wedge-shaped glass substrate and a mirror reflector coating disposed at a rear side of the wedge-shaped glass substrate;
wherein the prismatic mirror reflective element is adhesively attached at a mirror back plate of the mirror head;
wherein an optically clear adhesive (OCA) and a neutral density (ND) filter are disposed between the mirror back plate and the mirror reflector coating disposed at the rear side of the prismatic mirror reflective element;
wherein the camera views through (i) the OCA, (ii) the ND filter, (iii) the mirror reflector coating of the prismatic mirror reflective element and (iv) the wedge-shaped glass substrate of the prismatic mirror reflective element;
an electronic control unit (ECU) comprising electronic circuitry and associated software;
wherein the electronic circuitry of the ECU comprises an image processor for processing image data captured by the camera; and
wherein, with the mounting structure attached at the interior portion of the vehicle, image data captured by the camera is processed at the ECU for a cabin monitoring function.