Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1994-07-29
1996-04-09
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313373, 313524, H01J 4014
Patent
active
055064027
ABSTRACT:
An improved photocathode (12) and image intensifier tube (10) are disclosed along with a method for making both the tube (10) and photocathode (12). The disclosed image intensifier tube (10) creates a visible light image (20) from an image emitting photons (22). The tube (10) comprises a photocathode (12) having an indium-gallium-arsenide active layer (26) and an aluminum-gallium-arsenide window layer (28). The photocathode (12) is operable to emit electrons (23) in response to the photons (22). A display apparatus is coupled to the photocathode (12) and is operable to transform the emitted electrons (23) into a visible light image (24). An embodiment of the invention is capable of detecting 1.06 .mu.m radiation.
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Estrera Joseph P.
Passmore Keith T.
Calogeno Stephen
Varo Inc.
Westin Edward P.
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