Optical fiber quadrant detector having a sensor head with interm

Details Optical fiber quadrant detector having a sensor head with interm Optical fiber quadrant detector having a sensor head with interm

1993-11-15

1996-01-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022711, 385116, H01J 516

Patent

active

054850070

ABSTRACT:
An optical fiber quadrant detector (10) includes a sensor head (22) wherein each quadrant (A, B, C, D) thereof includes a plurality of light transmitting optical fibers (26) and a plurality of light receiving optical fibers (20). The light transmitting optical fibers (26) are equally distributed among the quadrants (A, B, C, D) as are the light receiving optical fibers (20). Hence, the outputs of the lights receiving optical fibers (20) are indicative of the alignment of a workpiece to the sensor head (22).

REFERENCES:
patent: 3384755 (1968-05-01), Williamson et al.
patent: 3484614 (1969-12-01), Tobey et al.
patent: 3609367 (1971-09-01), Barron
patent: 3940608 (1976-02-01), Kissinger et al.

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