Method for the optical determination and comparison of shapes an

Details Method for the optical determination and comparison of shapes an Method for the optical determination and comparison of shapes an

1976-03-25

1978-09-05

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

356120, G01B 1124

Patent

active

041115570

ABSTRACT:
The specification describes a method for the optical determination of departures in shape, changes in shape, and changes in position. In the method by means of light rays patterns are produced on the object and the patterns are represented by a photoelectronic device. Light rays originating from a coherent light source are projected by lenses or mirrors or holographically as a line or lines and/or point arrangements on an object, which are represented by means of an objective on an optoelectronic receiving device. In it they are converted into electric pulses, which after analog-digital conversion in an electronic computing unit are stored and are digitally coordinated with spatial coordinates. The data so obtained are compared with the data, obtained in the same manner, of the same object before its change in shape or position or with the data of an ideal or real object determining its ideal shape.

REFERENCES:
patent: 2574119 (1951-11-01), Mottu
patent: 2607267 (1952-08-01), Fultz et al.
patent: 3625618 (1971-12-01), Bickel
patent: 3976382 (1976-08-01), Westby

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