Photoelectronic transducer using a multiple microtip emissive cathode.

摘要

Each electrode (4) bearing the microtips (10) is made of a material whose conductivity increases when it is illuminated by a specified light. The transducer comprises at least one anode (12) which is arranged facing the microtips and in which a current is produced owing to electron emission from the microtips. An increase in the intensity of this current occurs when the said light reaches the said electrode at the location of the microtips. The transducer also comprises means (18) for detecting this increase. Application to the construction of photocopiers, telecopiers, video-cameras, X-ray cameras and X-ray detectors.