Abstract:
A photosensitive semi-conductor device for use as a target of camera tubes. It has a semi-insulating layer formed on that side of a semi-conductor substrate which is impinged by light photons or energetic electrons. The semi-insulating layer is charged in accordance with the incident light photons or energetic electrons, and the electric field set up across the semiinsulating coating layer by the bombardment of light photons and energetic electrons has an effect of controlling the motion of minority carriers to automatically control the input-output photoelectric conversion gain of the photosensitive semiconductor device.
Abstract:
An image pickup tube device has an evacuated container including a scanning section and an image section. In the sections are respectively mounted first and second magnetic means; the former generating a magnetic field in the image section and producing a leakage of magnetic field in the other section, the latter producing a magnetic field to reverse the polarity of the leakage field.
Abstract:
An image intensifier vidicon which is divided by a semiconductor target into an image section, the inner surface of the face plate of which is coated with an electron-emissive layer and a scanning section, wherein said semi-conductor target includes a semiconductor substrate, a plurality of PN junctions formed therein, an accelerating layer formed on the electron incident side of said target, and a scanning surface which is protected from contamination by alkali metals constituting the electronemissive layer by means of insulation rings provided in the scanning section. One of the insulation rings also set the critical spacing between the target and a mesh electrode.
Abstract:
An image pickup tube is manufactured by setting a PN junction type semiconductor target having a resistive sea made of cadmium telluride in a glass envelope and heating the envelope at 120*C to 400*C to effect evacuation.