Accession Number : ADD006172

Title :   Optical Photoemissive Detector and Photomultiplier.

Descriptive Note : Patent,


Personal Author(s) : Taylor,Henry F

Report Date : 03 Apr 1979

Pagination or Media Count : 8

Abstract : This patent discloses a device for detecting optical energy signals in an optical path is provided by combining a layer of photoemissive material overlying the optical path and a grounded first electrode positioned in electrical contact with the layer of photoemissive material; a second electrode is positioned in spaced, preferably parallel relationship from the first grounded electrode and a source of dc potential is connected across the electrodes. Upon the transmission of optical energy signals along the optical path, commensurate electrical signals are produced across a load resistance which is connected between the second electrode and the high potential side of the dc potential source. Alternatively the concept may be embodied in a photomultiplier responsive to signals in an optical path. In this embodiment a plurality of dynodes are positioned between the first and second electrodes, spaced at gradually increased distances from the layer of photoemissive material.

Descriptors :   *Patents, *Photoelectric effect, *Photomultiplier tubes, *Optical detectors, *Infrared detectors, Dynodes, Secondary emission, Anodes(Electron tubes), Cathodes(Electron tubes)

Subject Categories : Optical Detection and Detectors
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE