Laser range finder receiver

Details Laser range finder receiver Laser range finder receiver

1995-07-31

1997-11-25

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 501, 356 51, G01C 308, H01J 4014

Patent

active

056918089

ABSTRACT:
A laser range finder receiver for detecting a return pulse and providing an output signal indicative thereof and a single-chip microcontroller for controlling receiver operation and, in particular, for automatically recalibrating the receiver. The receiver is responsive to up and down current control signals from the microcontroller to adjust the bias of an APD photodetector. An offset voltage and receiver false alarm rate are monitored with no light on the photodetector while a calibration voltage is adjusted to recalibrate the receiver. The microcontroller further monitors photodetector temperature via a temperature sensor, and can perform APD bias adjustment and receiver recalibration in response to temperature changes, providing operation over a wide temperature range.

REFERENCES:
patent: 4274736 (1981-06-01), Balmer
patent: 4553836 (1985-11-01), Meier et al.
patent: 5291262 (1994-03-01), Dunne
patent: 5489981 (1996-02-01), Kilpatrick et al.
patent: 5491548 (1996-02-01), Bell et al.

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