Alignment means for a flaw detection system employing a light co

Details Alignment means for a flaw detection system employing a light co Alignment means for a flaw detection system employing a light co

1975-05-29

1976-09-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, 356172, G01N 2132

Patent

active

039808939

ABSTRACT:
An alignment means is provided for aligning a light collector rod with a scanning light beam in a flaw detection system. The light collector rod means, having a diffusing or reflective stripe thereon, is positioned to receive light from a material being examined which is being scanned by a light beam. In order to align the light collector rod with the scanning light beam, an alignment light source is positioned on the side opposite to the stripe on which light is received from the material, and the alignment light source is selectively actuated to project a dark stripe or line from the light collector rod means on the material being examined so that the scanning light beam can be aligned with the line projected thereon.

REFERENCES:
patent: 3471241 (1969-10-01), Hendrixson et al.
patent: 3565530 (1971-02-01), Boissevain et al.
patent: 3737238 (1973-06-01), Reiner et al.
patent: 3775011 (1973-11-01), Marsh
patent: 3866054 (1975-02-01), Wolf

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