US 7,491,939 B2
Photosensitive sensor and applications in the automotive field
Benoist Fleury, Vincennes (France)
Assigned to Valeo Vision, Bobigny (France)
Filed on Apr. 10, 2006, as Appl. No. 11/401,161.
Claims priority of application No. 05 03580 (FR), filed on Apr. 11, 2005.
Prior Publication US 2006/0226365 A1, Oct. 12, 2006
Int. Cl. G01J 5/02 (2006.01)
U.S. Cl. 250—339.05  [250/338.1; 356/51; 359/885] 41 Claims
OG exemplary drawing
 
1. A sensor photosensitive in relation to at least part of the radiation in the infrared and at least part of the radiation in the visible range, wherein the sensor comprises a filter affecting all or part of a receiving zone of the sensor and able to filter radiation in wavelengths to which the sensor is sensitive according to a degree of filtering that varies locally;
wherein said receiving zone comprises a plurality of zones, said filter providing infrared filtering of different levels to said plurality of zones;
wherein said filter filters only a top portion or a bottom portion of said receiving zone, which corresponds to a bottom part of the object or scene.