Apparatus for and method of optical position detection

Details Apparatus for and method of optical position detection Apparatus for and method of optical position detection

1990-12-27

1992-05-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502221, 250561, G01V 904

Patent

active

051171007

ABSTRACT:
The present optical position detection method and the apparatus therefor is adapted to compute an arithmetic mean of the adjusted light reception values received by adjacent photodetectors as the virtual light reception value at the virtual position, compare not only the adjusted light reception values of the respective photodetectors but also the virtual light reception values with the reference level and utilize the virtual position also as the light interruption position data when light interruption is determined, thus enhancing the accuracy of detecting the position of an object.

REFERENCES:
patent: 4559452 (1985-12-01), Igaki et al.
patent: 4566337 (1986-01-01), Smart
patent: 4645920 (1987-02-01), Carroll et al.
patent: 4652741 (1987-03-01), Golborne
patent: 5051574 (1991-09-01), Yoshida et al.

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