Range measurement for active optical recognition devices

Details Range measurement for active optical recognition devices Range measurement for active optical recognition devices

1988-11-03

1989-12-19

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356 5, G01C 308

Patent

active

048884774

ABSTRACT:
An inexpensive, reliable analog ramped-voltage timing device (34, 36, 38, 40, 44) can be used in a laser echo ranging device capable of resolution in the decimeter range by using a very steep ramp (42), and a flash A/D converter (50) to instantaneouly sample the ramped voltage upon receipt of the laser echo.

REFERENCES:
patent: 4139301 (1979-02-01), Chaborski
patent: 4464048 (1984-08-01), Farlow
patent: 4538907 (1985-09-01), Rocchi
patent: 4699508 (1987-10-01), Bolkow et al.
patent: 4734587 (1988-03-01), Schwarte
patent: 4770526 (1988-09-01), Manhart et al.
patent: 4827317 (1989-05-01), Mizushima et al.

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