EP 0127735 B1 19871119 - PHOTO CATHODE AND METHOD OF MANUFACTURING SUCH A CATHODE
Title (en)
PHOTO CATHODE AND METHOD OF MANUFACTURING SUCH A CATHODE
Publication
Application
Priority
DE 3316027 A 19830503
Abstract (en)
[origin: US4591717A] An infrared detector includes a vacuum tube containing a photo sensitive layer comprised of densely packed needles arranged vertically on a substrate and having been grown as metal whiskers in a porous portion of the substrate. The substrate includes a metallic layer either in contact with or insulated from the needles depending upon the mode of the detecting system. The needles may face the incoming radiation, or may face away therefrom, in which case at least part of the substrate has to be transparent to infrared radiation. The radiation is either acquired directly or through an infrared optic or through a raster or line-scanning system. Photo emission from the needles can be used either directly for the production of an image or indirectly through a scanning process. The diameter and distance of the needles is significantly smaller than the radiation band to be detected.
IPC 1-7
IPC 8 full level
H01J 1/34 (2006.01); H01J 9/12 (2006.01); H01J 9/233 (2006.01); H01J 17/49 (2006.01); H01J 31/49 (2006.01); H01J 40/06 (2006.01); H01J 43/08 (2006.01)
CPC (source: EP US)
H01J 1/34 (2013.01 - EP US); H01J 9/12 (2013.01 - EP US); H01J 2201/3425 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0127735 A1 19841212; EP 0127735 B1 19871119; AT E30986 T1 19871215; DE 3316027 A1 19841108; DE 3316027 C2 19870122; US 4591717 A 19860527
DOCDB simple family (application)
EP 84102976 A 19840317; AT 84102976 T 19840317; DE 3316027 A 19830503; US 60486184 A 19840427