Optical moisture sensor for a window or windshield

Details Optical moisture sensor for a window or windshield Optical moisture sensor for a window or windshield

1985-12-06

1987-03-24

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250577, 340602, G01N 2117

Patent

active

046527451

ABSTRACT:
A windshield moisture detector has two identical, symmetrically positioned prisms with an elongated body between an integral reflector and light transducer cavity. One light transducer cavity contains a light source and the other a light detector. The reflectors are angled so that when the moisture detector is partially in contact with the windshield, light can travel between the two reflectors through a light path in the window. The magnitude of light transmitted through the windshield is indicative of moisture on the windshield.

REFERENCES:
patent: 2977842 (1961-04-01), Duke
patent: 3540025 (1970-10-01), Levin et al.
patent: 3639770 (1972-02-01), Zizelmann
patent: 3917411 (1975-11-01), Schweizer et al.
patent: 4221962 (1980-09-01), Black et al.
patent: 4427879 (1984-01-01), Becher et al.

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