Tomography system

Details Tomography system Tomography system

1976-09-20

1978-05-02

Church, Craig E.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

250402, 250491, G03B 4116

Patent

active

040876942

ABSTRACT:
A linear tomographic method and apparatus wherein an overhead tube-stand or X-ray tube unit is non-mechanically coupled to a bucky or X-ray film holder to produce linear tomographs. No physical attachment exists between the tube-stand and the bucky. The tube-stand position is sensed by electro-magnetic radiation and more particularly by light radiation which is generated by a laser and directed to a reflector attached to the tube-stand adjacent to the tube focal spot. Light energy is reflected therefrom and sensed by an interferometer which produces a tube-stand position signal which is used to generate a command signal to operate respective drive motors which translate the bucky in an opposite direction to the tube-stand and simultaneously rotate the X-ray tube so that the X-ray focal spot, center of film, and imaginary fulcrum point remain substantially colinear during a tomographic sweep.

REFERENCES:
patent: 3809886 (1974-05-01), Cochran

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