Quadrant detector arrangement having integral light channels

Details Quadrant detector arrangement having integral light channels Quadrant detector arrangement having integral light channels

1993-12-07

1995-03-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250237R, H01J 4014

Patent

active

053960602

ABSTRACT:
A quadrant detector arrangement (10) includes a quadrant detector (12) having a photosensitive surface (28) and a plurality of light channels (14) extending therethrough. Light from a light source (16) is collimated by a collimating optical element (18) and projected through the light channels (14) toward a workpiece (36) such that light reflected from the workpiece (36) impinges upon the photosensitive surface (28).

REFERENCES:
patent: 3697761 (1972-10-01), Kamachi
patent: 3723013 (1973-03-01), Stirland et al.

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