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1. WO1985000465 - IMAGE INTENSIFIER TUBE WITH INCREASED CONTRAST RATIO

Publication Number WO/1985/000465
Publication Date 31.01.1985
International Application No. PCT/US1984/000898
International Filing Date 11.06.1984
IPC
H01J 29/89 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/113
86Vessels; Containers; Vacuum locks
89Optical or photographic arrangements structurally combined with the vessel
H01J 31/50 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
31Cathode-ray tubes; Electron-beam tubes
08having a screen on or from which an image or pattern is formed, picked-up, converted, or stored
50Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
CPC
H01J 2231/50036
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2231Cathode ray tubes or electron beam tubes
50Imaging and conversion tubes
50005characterised by form of illumination
5001Photons
50031High energy photons
50036X-rays
H01J 2231/50063
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2231Cathode ray tubes or electron beam tubes
50Imaging and conversion tubes
50057characterised by form of output stage
50063Optical
H01J 29/892
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
86Vessels; Containers; Vacuum locks
89Optical or photographic arrangements structurally combined ; or co-operating; with the vessel
892using fibre optics
H01J 31/50
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
31Cathode ray tubes; Electron beam tubes
08having a screen on or from which an image or pattern is formed, picked up, converted, or stored
50Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
Applicants
  • VARIAN ASSOCIATES, INC. [US]/[US]
Inventors
  • ZITELLI, Louis, Thomas
  • SCHUMACHER, Richard, Thomas
Agents
  • NISHIMURA, Keiichi
Priority Data
511,82008.07.1983US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMAGE INTENSIFIER TUBE WITH INCREASED CONTRAST RATIO
(FR) TUBE INTENSIFICATEUR D'IMAGE A RAPPORT DE CONTRASTE ACCRU
Abstract
(EN)
The contrast ratio of an image intensifier of the photocathode-amplifier-phosphor type is increased by using a fiber optic plate (23) of which the thickness is reduced to such extent that the plate may not be able to function as a vacuum seal or an electrical insulator when a typical voltage for the operation of the intensifier is applied to the phosphor layer (22). This relatively thin fiber optic plate (23) is placed entirely inside a vacuum, protected from the atmospheric pressure by a thick output window plate (25) which is optically transparent.
(FR)
Le rapport de contraste d'un intensificateur d'image du type à photocathode-amplificateur-phosphore est accru en utilisant une plaque de fibres optiques (23) dont l'épaisseur est réduite à un point tel qu'il est possible que la plaque ne puisse pas servir de scellement sous vide ou d'isolateur électrique lorsqu'une tension typique pour le fonctionnement de l'intensificateur est appliquée à la couche de phosphore (22). Cette plaque de fibres optiques relativement mince (23) est placée entièrement sous vide, protégée de la pression atmosphérique par une épaisse plaque de fenêtre de sortie (25) optiquement transparente.
Also published as
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