Solid-state image intensifier

Abstract

Abstract A solid-state image intensifier comprising, essentially, an electroluminescent layer containing 45 to 70 percent by volume of electroluminescent phosphor mixed with a binding material and a photoconductive layer in juxtaposition or close association with the electroluminescent layer. This solid-state image intensifier is adapted for use as an amplifier of radiant energy or as a converter of invisible radiation into visible radiation and is designed to be energized by AC and DC fields. Due to its pecific composition, the electroluminescent layer has a nonlinear resistance which functions to keep a DC voltage applied across the photoconductive layer at a substantially constant value, thereby increasing the photoconductive sensitivity of the photoconductive layer. The increase in the DC voltage as applied to the image intensifier causes the characteristic curve to shift to the low input energy side, enabling efficient operation of the image intensifier in a low input energy range.

Inventors

• 👤 K Tanaka
• 👤 T Kohashi
• 👤 Y Machida
• 👤 N Suzuki

Bibliographic Details