Scaling apparatus with linearization compensation

Details Scaling apparatus with linearization compensation Scaling apparatus with linearization compensation

1975-04-28

1976-12-14

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250236, 250560, 356160, G01B 1108

Patent

active

039972690

ABSTRACT:
Scaling apparatus for measuring the dimensions of an article, such as a log, including a two-dimensionally curved parabolic mirror for viewing an article, and a constant-speed, rotary, electro-optical scanner located at the focal point of the mirror for scanning the mirror's view. Electrical pulse-generating circuitry in the apparatus operates during such scanning to generate, for each revolution of the scanner, a stored pulse count which directly indicates the side-to-side dimensions of a viewed article. Included in such circuitry is means for varying, in effect, the rate at which pulses are counted so as to correct the finally stored count for nonlinearity inherently encountered in the scanned view of the mirror.

REFERENCES:
patent: 2492155 (1949-12-01), Kandoian
patent: 3184847 (1965-05-01), Rosen
patent: 3364358 (1968-01-01), Ashworth
patent: 3514713 (1970-05-01), Leyde
patent: 3681706 (1972-08-01), Harzer

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