Active anti-dazzle device for the drivers of cars and other moto

Details Active anti-dazzle device for the drivers of cars and other moto Active anti-dazzle device for the drivers of cars and other moto

1992-07-31

1993-11-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

359230, 359275, G01J 120

Patent

active

052586073

ABSTRACT:
An electrical circuit including an optic sensor generating an output sensing signal proportional to a value of a luminosity intercepted in the sensor's field of reception at a specific angle, a measuring/comparing circuit for comparing the output sensing signal with a preset threshold value so as to transmit an actuating signal to a power supply unit of an electro-sensitive screen which responds to the transmission by entering a state of becoming partially darkened or colored. The electro-sensitive screen enters into a state of total transparency when there is no actuating signal transmitted or when the actuating signal ceases its transmission.

REFERENCES:
patent: 1518956 (1924-12-01), Beitman
patent: 3652149 (1972-03-01), Rogers
patent: 3961181 (1976-06-01), Golden
patent: 4161653 (1979-07-01), Bedini et al.
patent: 4719462 (1988-01-01), Hawkins
patent: 4848890 (1989-07-01), Horn

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