Patent ID: 7105792
Filing Date: 2006-09-12
Classification: H04N

Abstract:
1. A device for compensating for fluctuations in the light which is emitted by a light source and propagates along a light path, comprising: a first light-sensitive sensor, which detects the intensity of the light at a first location along the light path in a spatially resolved manner and generates electrical image signals, a second light-sensitive sensor, which detects the intensity of the light at a second location along the light path and generates electrical output signals, wherein the second sensor detects the light intensity in a spatially resolved manner, an evaluation circuit is provided, which receives both the output signals of the first sensor and the output signals of the second sensor as input signals and corrects the input signals originating from the first sensor in a manner dependent on the input signals originating from the second sensor in such a way that the output signals of the evaluation circuit are essentially independent of fluctuations in the light intensity.