Three dimensional moire pattern alignment

Details Three dimensional moire pattern alignment Three dimensional moire pattern alignment

1990-06-28

1991-10-01

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

356399, G01B 1100

Patent

active

050528076

ABSTRACT:
An apparatus for determining three dimensional positioning relative to a predetermined point utilizing moire interference patterns such that the patterns are complementary when viewed on axis from the predetermined distance. Further, the invention includes means for determining rotational positioning in addition to three dimensional translational positioning.

REFERENCES:
patent: 3604813 (1971-09-01), Kronnie et al.
patent: 3689162 (1972-09-01), Ferguson
patent: 3799678 (1974-03-01), Kerr
patent: 3957378 (1976-05-01), Zipin
patent: 4166699 (1979-09-01), Bergkvist
patent: 4245912 (1981-01-01), Bergkvist
patent: 4572952 (1986-02-01), March
patent: 4696574 (1987-09-01), Penney
"Development of Moire Machine Vision", Kevin G. Harding, NASA Conference Publication 2491, First Annual Workshop on Space Operations Automation & Robotics (SOAR '87), pp. 413-418, Aug. 5-7, 1987.

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