Patent ID: 6995354

Claim:
An optoelectronic sensor device for detecting precipitation on an outer surface of a transparent pane, the device comprising: a beam guide body attached to an inner surface of the pane; a circuit board spaced apart from the inner surface of the pane; wherein the beam guide body is positioned between the inner surface of the pane and the circuit board; a beam transmitter arranged on the circuit board to transmit, along a transmission beam path, a light beam toward the pane via the beam guide body; a beam receiver arranged on the circuit board to receive, along a reception beam path, a light beam reflected from the pane via the beam guide body; a circuit substrate arranged parallel to the pane and in an area lying outside of the transmission and reception beam paths, the circuit substrate positioned between the beam guide body and the circuit board, the circuit substrate being spaced apart from the circuit board and being electrically connected to the circuit board to receive electrical current from the circuit board, the circuit substrate being separated from the beam guide body by an installation space; and a heating device arranged on the circuit substrate in an area lying outside of the transmission and reception beam paths, wherein the circuit substrate provides the electrical current received from the circuit board to the heating device, wherein the heating device converts the electrical current to heat.