Method and apparatus to determine frequency of movement and for

Details Method and apparatus to determine frequency of movement and for Method and apparatus to determine frequency of movement and for

1983-02-14

1986-07-15

Rosenberger, R. A.

Optics: measuring and testing

Motion stopping

G01P 340

Patent

active

046003002

ABSTRACT:
Method and apparatus for determining the frequency of movement of an object or inspection of a moving object where a liquid crystal viewer is pulsed at a rate equal to the rate of movement of the object. Method and means are provided for obtaining a variable viewing window for each period of the pulsing means.

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