Radiant energy – With charged particle beam deflection or focussing – With target means
Patent
1980-09-23
1982-06-01
Smith, Alfred E.
Radiant energy
With charged particle beam deflection or focussing
With target means
250322, 250439P, 250355, H05G 132
Patent
active
043330126
ABSTRACT:
An automatic blackening degree adjustment system which includes the steps of making a fluorescent plate luminous by a residual dose of X-rays that have penetrated the person to be photographed and an X-ray film, converting the amount of luminescense into electric output, converting the relative feed speed of an X-ray film with respect to an X-ray beam into electric output and computing an electric output obtained from the conversion of amount of luminescense and the relative feed speed and feeding back a value obtained to a filament control circuit to thereby control the filament current of the X-ray machine whereby the tube voltage of the X-ray tube is kept constant so that the exposure is adjusted to an optimum amount with the X-ray wave length kept constant and resulting in X-ray photograph taken which have sufficient and uniform contrast in any part thereof.
REFERENCES:
patent: 2401289 (1946-05-01), Morgan et al.
patent: 2913582 (1959-11-01), Collins et al.
patent: 4063099 (1977-12-01), Grassme
Grigsby T. N.
Kabushiki Kaisha Morita Seisakusho
Smith Alfred E.
LandOfFree
Automatic blackening degree adjustment system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic blackening degree adjustment system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic blackening degree adjustment system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1851272