Method and apparatus for scanning

Details Method and apparatus for scanning Method and apparatus for scanning

1982-06-01

1984-10-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250572, H01J 314

Patent

active

044750358

ABSTRACT:
The surface of a part to be identified or inspected is scanned by a laser beam projected normal to the surface to be scanned from the end of a rotating arm in a circular scan pattern. A small collector lens is fixed to the end of the rotating arm and has a hole through which the projected beam passes. The part moves across the scan pattern in a direction perpendicular to the projected beam, and intensity of reflected light received by the lens and transmitted to a detector provides precision information concerning surface characteristics, orientation and discontinuities.

REFERENCES:
patent: 4208589 (1980-06-01), Dashwood et al.
patent: 4259013 (1981-03-01), Faxvog et al.
patent: 4348114 (1982-09-01), Neale et al.
patent: 4392120 (1983-07-01), Mita et al.

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