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American Journal of Roentgenology, Vol 103, 689-693, Copyright © 1968 by American Roentgen Ray Society

TELEVISION CAMERA OVERLOAD

A SIMPLE SOLUTION TO THE PROBLEM OF EXCESS LUMINOUS FLUX IN THE CAMERA

B. W. A. LEEMING M.B., CH.B., F.F.R., M.R.A.C.P., M.C.R.A.1

1 From the X-Ray Department of Auckland Hospital, Auckland, New Zealand

When weakly filtered or unfiltered radiation of sufficient intensity strikes the target of an image intensifier, there is secondary overloading of the television camera. The image seen on the picture tube becomes bleached—a phenomenon familiarly termed "white out."

The explanation for this phenomenon is outlined and a simple practical solution of the problem is offered.


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