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1. (WO2003054586) STRAY LIGHT CORRECTION METHOD FOR AN OPTICAL SENSOR ARRAY

Pub. No.:    WO/2003/054586    International Application No.:    PCT/DE2002/004128
Publication Date: Jul 3, 2003 International Filing Date: Nov 8, 2002
IPC: G01S 7/497
G01V 8/12
Applicants: CONTI TEMIC MICROELECTRONIC GMBH
BEUSCHEL, Michael
Inventors: BEUSCHEL, Michael
Title: STRAY LIGHT CORRECTION METHOD FOR AN OPTICAL SENSOR ARRAY
Abstract:
The invention relates to a stray light correction method for an optical sensor array. In optical sensor arrays, components other than the desired useful signal induced by the luminous reflectance of potential collision objects may occur and may superimpose the useful signal, thereby invalidating it. The signal curve of the stray light component depends on other effects as well. The invention also relates to a stray light correction method for an optical sensor array that comprises a light emitter and an associated receiver. The light emitter emits light signals into the field of view of the sensor array at periodical intervals in order to detect objects, and reflected components of the light signals that are incident on the receiver indicate the presence of objects. The reflected components of the light signals that are incident on the receiver are used to generate a sampled value. In a state in which no object is present in the field of vision of the sensor array, a correction value for the sampled value is determined. The invention is useful as an evaluation method for optical precrash sensors.