Rain sensor

Details Rain sensor Rain sensor

G - Physics

01

N

G01N 21/41 (2006.01) G01N 21/43 (2006.01)

Patent

CA 2582864

In the rain sensor, the prism includes the first and the second lens surfaces at the light-emitting side and the light-receiving side on optical axes each differently directed. The prism also includes a first reflection wall which reflects the light injecting the first lens surface at the light-emitting side toward the first detection surfaces of the windshield panel, and a second reflection wall which reflects the light injecting from the second lens surface at the light-emitting side to be reflected on second detection surfaces of the windshield panel toward the second lens surface at the light-receiving side. The light reflected on the first detection surface is condensed to inject the light-receiving element from the first lens surfaces, and the light reflected on the second detection surfaces is condensed to inject the light-receiving element from the second lens surface through reflection on the second reflection wall.

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