Method and apparatus for the contact-less measuring of objects

Details Method and apparatus for the contact-less measuring of objects Method and apparatus for the contact-less measuring of objects

1984-10-15

1987-04-28

Hix, L. T.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 4, 356376, G01C 308

Patent

active

046609709

ABSTRACT:
The invention concerns a method for the optical sensing of workpieces in accordance with the principle of triangulation in which a light spot is projected at an angle onto the object to be measured (13) and the distance from the object (13) is determined from the displacement of the image of the light spot as measured with a position-sensitive detector (10).
In addition, the shape or the area of the light spot is measured by means of an image analysis instrument (3) and the inclination of the surface of the object to the direction of observation is determined therefrom in order to increase the accuracy of the distance determination.

REFERENCES:
patent: 4325639 (1982-04-01), Richter
patent: 4355904 (1982-10-01), Balasubramanian
patent: 4411528 (1983-10-01), Newcomb et al.
patent: 4427880 (1984-01-01), Kanade et al.

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