Method and apparatus for automatically recognizing faults in the

Details Method and apparatus for automatically recognizing faults in the Method and apparatus for automatically recognizing faults in the

1978-01-19

1979-06-12

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250578, 350181, H01J 314

Patent

active

041581342

ABSTRACT:
A method and apparatus is disclosed for the automatic and rapid recognition of faults in a surface or dimensions of an object, or for recognizing a position of the object in a field of view of an observation and/or measuring device. A photodiode row is provided having an active surface with a length dimension substantially greater than its width dimension. An anamorphotic lens system is provided which focuses a first dimension of the field of view onto the active surface length dimension and which focuses a second orthogonal dimension of the field of view onto the active surface width dimension. By means of signals from the photodiode row, theoretical dimensions can be compared with actual measured dimensions of the object.

REFERENCES:
patent: 3475614 (1969-10-01), Bullard
patent: 4053773 (1977-10-01), Deresh et al.

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