US 12,069,785 B2
Detector device and automotive lighting device
Miguel Angel Cantudo Franco, Martos (ES); and Manuel Calmaestra Fortis, Martos (ES)
Assigned to VALEO VISION, Bobigny (FR)
Appl. No. 17/278,529
Filed by VALEO VISION, Bobigny (FR)
PCT Filed Sep. 17, 2019, PCT No. PCT/EP2019/074902
§ 371(c)(1), (2) Date Mar. 22, 2021,
PCT Pub. No. WO2020/064439, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 18382682 (EP), filed on Sep. 24, 2018.
Prior Publication US 2022/0032842 A1, Feb. 3, 2022
Int. Cl. G01R 31/00 (2006.01); B60Q 1/34 (2006.01); B60Q 1/44 (2006.01); B60Q 11/00 (2006.01); F21S 43/20 (2018.01); H05B 45/50 (2022.01)
CPC H05B 45/50 (2020.01) [B60Q 1/34 (2013.01); B60Q 1/44 (2013.01); B60Q 11/00 (2013.01); F21S 43/26 (2018.01); G01R 31/006 (2013.01); B60Q 2400/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A detector device for detecting a failure status of at least one solid state light source of an automotive lighting device, the detector device comprising:
a status detection unit configured to detect the failure status of the at least one solid state light source and to generate a reference signal which depends at least on the failure status of the at least one solid state light source;
a comparison signal generator configured to generate a comparison signal;
a comparison unit configured to generate a pulse-width modulation signal by comparing the reference signal with the comparison signal such that the failure status of the at least one solid state light source is encoded in the pulse-width modulation signal.