Laser warning sensor with frequency-coded position information

Details Laser warning sensor with frequency-coded position information Laser warning sensor with frequency-coded position information

1989-10-04

1991-06-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502061, 356152, H01J 516

Patent

active

050251481

ABSTRACT:
A laser warning sensor having a directional resolution capability based on a pulse frequency encoding of the directions at which laser light beams are received, is equipped with a plurality of light signal delay units. The directional or angular information is encoded by closed loop fiberglass light conductors, one of which is part of each light signal delay unit, each closed loop has a different length so that the respective signal delay signifies the respective directional information. The closed loop light conductors transform received light pulse signals into pulse sequences or pulse trains each having a given frequency. The respective frequencies are separated by filters in an electronic evaluating circuit which receives its input signals from a photodiode which receives the output light signals from all delay units.

REFERENCES:
patent: 3991318 (1976-11-01), Duguay
patent: 4558920 (1985-12-01), Newton et al.
patent: 4825063 (1989-04-01), Haldorsson et al.

Affiliated with

Also associated with

Rating

Laser warning sensor with frequency-coded position information does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser warning sensor with frequency-coded position information, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser warning sensor with frequency-coded position information will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-146949