Light detection and signaling system

Details Light detection and signaling system Light detection and signaling system

1976-03-23

1978-09-26

Caldwell, Sr., John W.

Communications: electrical

Digital comparator systems

315149, 315155, 315200A, 250201, B62J 500, H05B 3702

Patent

active

041174577

ABSTRACT:
A light detection and signaling system for attachment to a bicycle, pedestrian, or to any other object. The system includes a housing having a first photosensitive surface mounted therein for detecting the headlights of a vehicle approaching from any direction. The system further includes at least one light source mounted for visibility, along with circuitry responsive to detection of the vehicle headlights for illuminating the light source. A second photosensitive surface may also be provided to receive largely ambient light and to be nonresponsive to the lights of an approaching vehicle, along with circuitry to allow the illumination of the light source only when the second photosensitive surface detects the absence of a predetermined level of ambient light.

REFERENCES:
patent: 3160757 (1964-12-01), McAllise
patent: 3601614 (1971-08-01), Platzer
patent: 3790848 (1974-02-01), Lai
patent: 3965388 (1976-06-01), Brisk
patent: 3989980 (1976-11-01), Berman

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