US 12,235,389 B2
Automotive radar / LIDAR behind reflective surfaces
Traian Miu, Oakville (CA); and Gabriele Wayne Sabatini, Oakville (CA)
Assigned to Magna Electronics Inc., Auburn Hills, MI (US)
Filed by Magna Electronics Inc., Auburn Hills, MI (US)
Filed on Aug. 29, 2019, as Appl. No. 16/554,701.
Claims priority of provisional application 62/725,480, filed on Aug. 31, 2018.
Prior Publication US 2020/0072947 A1, Mar. 5, 2020
Int. Cl. G01S 7/481 (2006.01); B60R 1/12 (2006.01); B60R 13/00 (2006.01); B60R 13/04 (2006.01); G01S 13/931 (2020.01); G01S 17/931 (2020.01); G02B 5/30 (2006.01); G02B 27/28 (2006.01); G01S 7/02 (2006.01)
CPC G01S 7/4813 (2013.01) [B60R 1/12 (2013.01); B60R 13/005 (2013.01); B60R 13/04 (2013.01); G01S 13/931 (2013.01); G01S 17/931 (2020.01); G02B 5/3008 (2013.01); G02B 5/3033 (2013.01); G02B 27/288 (2013.01); B60R 2001/1223 (2013.01); B60Y 2400/3017 (2013.01); B60Y 2410/10 (2013.01); G01S 7/027 (2021.05); G01S 2013/9327 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A sensor assembly for detecting an object comprising:
at least one electromagnetic source configured to emit electromagnetic waves;
at least one electromagnetic receiver configured to receive the electromagnetic waves after reflecting from the object and corresponding with a detection of the object in proximity to said sensor assembly;
a filter cover disposed adjacent to and covering said at least one electromagnetic source and said at least one electromagnetic receiver, the filter cover being transmissive to the electromagnetic waves and reflective to a visible light, thereby concealing said at least one electromagnetic source and said at least one electromagnetic receiver;
wherein said filter cover is associated with an exterior surface of a vehicle, and wherein the exterior surface has an appearance of a metal; and
wherein the filter cover comprises a reflective polarizer configured to transmit the electromagnetic waves polarized in a first direction and to reject the electromagnetic waves polarized in a second direction different than the first direction, and wherein visible light impinging on an external surface of the reflective polarizer is reflected as visible light having reflectance spectra matching reflectance spectra of the exterior surface of the vehicle so that the reflective polarizer has the appearance of the metal to a person viewing the reflective polarizer.