High resolution distance measuring apparatus

Details High resolution distance measuring apparatus High resolution distance measuring apparatus

1975-09-02

1977-05-03

Wilbur, Maynard R.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356167, 356169, G01C 308

Patent

active

040211169

ABSTRACT:
A high resolution optical electronic measuring device for measuring displacement distance between an object which moves and one which is generally stationary includes apparatus for generating a series of cyclic radiation fringe patterns moving in correspondence with the object being observed and electrical circuitry for processing two corresponding cyclically generated electrical signals to provide increased measurement resolution by electronically multiplying each division on a measuring scale into eight measurement increments.

REFERENCES:
patent: 3388262 (1968-06-01), Stutz
patent: 3709611 (1973-01-01), Taisne
patent: 3757126 (1973-09-01), Tumbush
patent: 3768911 (1973-10-01), Erickson
patent: 3809895 (1974-05-01), Taisne

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