Patent
1985-05-17
1987-09-01
Corbin, John K.
350279, 350283, 350332, G02B 1700, G02F 113
Patent
active
046905081
ABSTRACT:
A rearview mirror system comprises an electrically controlled optical transmission plate disposed over a reflecting surface. The optical transmission plate is selectively operable to any of a number of different states of opaqueness between a maximum light transmission and a maximum opaqueness. The opaqueness of the optical transmission plate is controlled by an electronic circuit which includes two sensors, one for sensing the brightness of incident light from the field of view and the other for sensing ambient light. The control operates to cause the light which is incident on the reflecting surface to be closed loop regulated to a desired degree of brightness which is also correlated with ambient light conditions. A manually operable adjustment is also provided for the observer to set a desired brightness characteristic.
REFERENCES:
patent: 3280701 (1966-10-01), Donnely et al.
patent: 3601614 (1971-08-01), Pletzer
patent: 3815982 (1974-06-01), Wagensonner
patent: 3862798 (1975-01-01), Hopkins
patent: 3910688 (1975-10-01), Yamashita
patent: 4005928 (1977-02-01), Kmetz et al.
patent: 4443057 (1984-04-01), Bauer et al.
patent: 4475031 (1984-10-01), Mockovciak
Millman et al, Electronic Devices and Circuits, Chpt. 18, pp. 558-565, New York, copyright 1967.
C-D Marketing Ltd.
Corbin John K.
Lewis David
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