Method and apparatus for calibrating optical sensors

Details Method and apparatus for calibrating optical sensors Method and apparatus for calibrating optical sensors

1986-07-02

1989-06-06

Rosenberger, Richard A.

Optics: measuring and testing

Of light reflection

307311, G01N 2155

Patent

active

048366820

ABSTRACT:
A self calibrating optical sensor is described in which a time varying response signal is provided which is a function of the reflectivity of a surface being detected and the overall response of the photodetector circuit. This response time is stored to establish a reference value to ascertain similar reflective surface are present.

REFERENCES:
patent: 4236826 (1980-12-01), Yamanishi
patent: 4557604 (1985-12-01), Gephart
patent: 4622477 (1986-11-01), Uda
patent: 4642456 (1987-02-01), Watanabe
patent: 4676647 (1987-06-01), Kikkawa et al.

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