Having an electrical contact on an emission surface thereof

Details Having an electrical contact on an emission surface thereof Having an electrical contact on an emission surface thereof

1997-01-30

2000-05-30

Patel, Nimeshkumar D.

Electric lamp and discharge devices

Photosensitive

Having photocathode on tube wall

313542, 313523, 250214VT, 257 11, H01J 4312, H01L 2906

Patent

active

060694459

ABSTRACT:
A photocathode device for use in an image intensifier of a night vision device, the device having a faceplate fabricated from an optically transparent material and a photoemissive semiconductor wafer bonded to the faceplate. The photoemissive wafer includes a first contact disposed on a peripheral surface thereof for electrically contacting the wafer and an annular-shaped second contact disposed on the emission surface of the wafer for enabing a potential difference to be applied across the wafer to facilitate the emission of photogenerated carriers from the emission surface.

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