Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1993-05-07
1995-01-10
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313526, H01J 4014
Patent
active
053810007
ABSTRACT:
An image intensifier 18 is comprised of an evacuated chamber, an input surface 16 having a florescent material thereon for converting incident radiation into a visible light representative of the incident radiation, a photocathode layer 20 disposed closely adjacent the input surface for emitting a cloud of free electrons 22 into the evacuated chamber in proportion to the intensity of visible light at each point thereon, and an output surface 26 having a scintillating material thereon for converting electrons impinging thereon into a relatively bright light image proportional to the electron energy at each point on the output surface said light image having a first aspect ratio. An electrical potential 24 accelerates the free electrons from the photo-cathode to the output surface. A fiber optic bundle 28 comprised of an input face, positioned outside the chamber to view the bright light image at the output surface, and an output face 34 is provided. The output face is terminated at a cut angle 42 other than perpendicular to longitudinal axis immediately before the output face such that the output face is at a second aspect ratio when viewed normal thereto.
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Gurin Timothy B.
Nelms David C.
Notzen Randall A.
Picker International Inc.
Shami K.
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