Optical sensor arrangement

Details Optical sensor arrangement Optical sensor arrangement

1986-09-22

1989-01-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

35821328, H01J 4014

Patent

active

047989661

ABSTRACT:
A lower frequency clock signal is supplied to a CCD line sensor. The step-like test signal detected by a scanning circuit is converted by means of a defining circuit and supplied to an evaluation circuit. The position of a light bar on a sensor is accurately determined by comparison with a higher frequency clock signal.

REFERENCES:
patent: 4065788 (1977-12-01), Meier et al.
patent: 4310850 (1982-01-01), Casler, Jr.
patent: 4585947 (1986-04-01), Liptay-Wagner et al.

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