US 12,235,355 B2
Automotive lighting device
Pierre Renaud, Bobigny (FR); and Alexandre Joerg, Bobigny (FR)
Assigned to VALEO VISION, Bobigny (FR)
Appl. No. 17/631,392
Filed by VALEO VISION, Bobigny (FR)
PCT Filed Jul. 22, 2020, PCT No. PCT/EP2020/070638
§ 371(c)(1), (2) Date Sep. 14, 2022,
PCT Pub. No. WO2021/018680, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 1908765 (FR), filed on Jul. 31, 2019; and application No. 2006005 (FR), filed on Jun. 9, 2020.
Prior Publication US 2023/0048569 A1, Feb. 16, 2023
Int. Cl. G01S 13/931 (2020.01); F21S 41/20 (2018.01); F21S 45/00 (2018.01)
CPC G01S 13/931 (2013.01) [F21S 41/28 (2018.01); F21S 45/00 (2018.01); G01S 2013/93277 (2020.01)] 7 Claims
OG exemplary drawing
 
1. Automotive lighting device comprising:
a light source configured to emit light in a light direction;
a sensor configured to acquire information outside the lighting device by emitting a wave in a sensor direction, the wavelength of the wave being comprised between 1 mm and 1 cm; and
a cover comprising a first portion located in the light direction and a second portion located in the sensor direction, the second portion comprising a sensor region having a refractive index and a thickness which is comprised between 0.8 and 1.2 times an ideal thickness, the ideal thickness being equal to a natural number multiplied by the wavelength and divided by two times the refractive index, wherein the thickness is defined for an incidence angle (θ) equal to arctan (L1/(2e4)), with e4 the distance between the sensor and the cover and L1 the distance between an emitting antenna and receiving antennas of said sensor.