Optical sensor device

Details Optical sensor device Optical sensor device

2009-11-18

2011-12-27

Allen, Andre (Department: 2855)

Measuring and testing

Meteorology

Precipitation

Reexamination Certificate

active

08082783

ABSTRACT:
An optical sensor device that can be used as a rain sensor has a light emitter, a light receiver, and an optical plate with rotationally symmetrically shaped Fresnel prism structures, which is coupled to a pane, in particular a windshield of a vehicle, by means of a coupling layer. On its opposite side, the optical plate takes up light from the light emitter. The light is coupled into the pane and, after a total reflection on an internal surface of the pane, is directed onto the light receiver.

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