Method of determining a dimension of an article

Details Method of determining a dimension of an article Method of determining a dimension of an article

1978-03-07

1980-10-14

Corbin, John M.

Optics: measuring and testing

By polarized light examination

With light attenuation

356 1, 356387, B01B 1100, G01C 320

Patent

active

042278120

ABSTRACT:
To determine a dimension of an article, a beam is directed at the article by means of a first mobile deflector so as to scan the part of the profile of the article comprising the dimension to be measured. Rays reflected by the article are orientated in the direction of at least one receiver by means of a second mobile deflector. The deflectors are angularly moved at different speeds. The positions occupied by two points related with the dimension are determined. The dimension is calculated with respect to these points.

REFERENCES:
patent: 3016464 (1962-01-01), Bailey
patent: 3234844 (1966-02-01), Fain et al.
patent: 3857637 (1974-12-01), Obenreder
patent: 3899663 (1975-08-01), Pirlet

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