Sensor device for detecting moisture on a window
First Claim
Patent Images
1. A sensor device for detecting wetting of an automotive windshield, comprising:
- at least two light-emitting transmitters;
at least two receivers; and
a light guidance body injecting radiation from the at least two light-emitting transmitters into the windshield at an angle of inclination and outputting the radiation from the windshield to the at least two receivers, the light guidance body including at least four structures, each of the at least four structures having two different surfaces to collect and parallelize the radiation from a corresponding one of the at least two light-emitting transmitters in two different directions, wherein the at least two transmitters and the at least two receivers are situated so that images thereof define corner points of a non-right parallelogram, the images being formed by projection onto a plane parallel to the windshield.
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Abstract
A sensor device is described for detecting wetting of a windshield that has only one transmitter with which two measuring zones of the sensor device can be implemented on a wettable outside of the windshield. A light guidance body injecting transmitter radiation into the windshield has structures with which the transmitter radiation emitted by the transmitter is collected and parallelized in two different directions.
4 Citations
15 Claims
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1. A sensor device for detecting wetting of an automotive windshield, comprising:
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at least two light-emitting transmitters;
at least two receivers; and
a light guidance body injecting radiation from the at least two light-emitting transmitters into the windshield at an angle of inclination and outputting the radiation from the windshield to the at least two receivers, the light guidance body including at least four structures, each of the at least four structures having two different surfaces to collect and parallelize the radiation from a corresponding one of the at least two light-emitting transmitters in two different directions, wherein the at least two transmitters and the at least two receivers are situated so that images thereof define corner points of a non-right parallelogram, the images being formed by projection onto a plane parallel to the windshield. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification