US3721848A - Camera tube having photoconductive lead monoxide layer on silicon carbide signal plate - Google Patents

Camera tube having photoconductive lead monoxide layer on silicon carbide signal plate Download PDF

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Publication number
US3721848A
US3721848A US00090493A US3721848DA US3721848A US 3721848 A US3721848 A US 3721848A US 00090493 A US00090493 A US 00090493A US 3721848D A US3721848D A US 3721848DA US 3721848 A US3721848 A US 3721848A
Authority
US
United States
Prior art keywords
silicon carbide
layer
camera tube
electrically conductive
lead monoxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00090493A
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English (en)
Inventor
W Knippenberg
G Verspui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Philips Corp
Original Assignee
US Philips Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3721848A publication Critical patent/US3721848A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/233—Manufacture of photoelectric screens or charge-storage screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/24—Supports for luminescent material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/45—Charge-storage screens exhibiting internal electric effects caused by electromagnetic radiation, e.g. photoconductive screen, photodielectric screen, photovoltaic screen

Definitions

  • ABSTRACT Foreign Application Priority Data
  • the contact surface of the substrate with said layer is [52] US. Cl. .3l3/65 A, 313/311 rendered electrically conductive with the aid of com [5 l] lnt.
  • radiation-sensitive substance is to be understood a substance capable of producing reversible alterations of electric properties such as the conductivity or the dielectric properties such as the conductivity or the dielectric constant or of the light emission under the action of electro-magnetic or corpuscular radiation.
  • the term therefore covers both photo-conductive and luminescent substances.
  • the signal windows according to the invention may comprise a substrate completely consisting of compact silicon carbide and being electrically conductive at least on one surface.
  • the electrode system 6 comprises a thermionic cathode 8 to be heated by a filament wire 7, a Wehnelt cylinder 9 and a perforated anode 10, which is electrically connected to a cylindrical electrode 1 l.
  • the electrode 11 is provided on the side of the window with a gaze electrode 12.
  • the signal window comprises a transparent substrate 2 of silicon carbide or quartz, provided on the side facing the electrode 1 1 with a transparent signal electrode 13 formed by a compact layer of electrically conductive silicon carbide.
  • the substrate body 2 with the electrode 13 is sealed, as stated above, in the cylindrical bulb 1 if necessary with the aid of one or more intermediate kinds of glass.
  • the signal electrode 13 is provided with a current conductor 14 taken to the outside.
  • the wafers are sealed in tubes of borosilicate glass, the contacts of the gold alloy being taken through the tube wall.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
US00090493A 1969-12-19 1970-11-18 Camera tube having photoconductive lead monoxide layer on silicon carbide signal plate Expired - Lifetime US3721848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6919053A NL6919053A (enrdf_load_stackoverflow) 1969-12-19 1969-12-19

Publications (1)

Publication Number Publication Date
US3721848A true US3721848A (en) 1973-03-20

Family

ID=19808670

Family Applications (1)

Application Number Title Priority Date Filing Date
US00090493A Expired - Lifetime US3721848A (en) 1969-12-19 1970-11-18 Camera tube having photoconductive lead monoxide layer on silicon carbide signal plate

Country Status (5)

Country Link
US (1) US3721848A (enrdf_load_stackoverflow)
DE (1) DE2058640A1 (enrdf_load_stackoverflow)
FR (1) FR2073859A5 (enrdf_load_stackoverflow)
GB (1) GB1277568A (enrdf_load_stackoverflow)
NL (1) NL6919053A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891887A (en) * 1972-10-03 1975-06-24 English Electric Valve Co Ltd Semiconductor devices
US3988758A (en) * 1974-07-10 1976-10-26 Nippon Electric Company, Ltd. Semiconductor camera-tube target
WO1992004609A1 (en) * 1990-08-31 1992-03-19 Dayco Products, Inc. Fuel dispensing system and method of making the same
US5289949A (en) 1992-06-22 1994-03-01 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Multi-cavity dispensing refill cartridge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6350397B1 (en) 1999-03-10 2002-02-26 Aspen Research Corporation Optical member with layer having a coating geometry and composition that enhance cleaning properties
US20130074358A1 (en) * 2011-09-24 2013-03-28 Quantum Technology Holdings Limited Heated body with high heat transfer rate material and its use

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544755A (en) * 1948-01-29 1951-03-13 Bell Telephone Labor Inc Electron camera tube
US2698912A (en) * 1951-01-17 1955-01-04 Hartford Nat Bank & Trust Co X-ray image amplifier
US3310700A (en) * 1964-05-28 1967-03-21 Rca Corp Photoconductive device incorporating stabilizing layers on the face of the selenium layer
US3444412A (en) * 1963-03-12 1969-05-13 Edward Fokko De Haan Photo-responsive device having photo-sensitive pbo layer with portions of different conductivity types
US3505551A (en) * 1966-10-24 1970-04-07 Gen Electrodynamics Corp Photoconductive layer having reduced resistivity portions in pattern form
US3577285A (en) * 1968-03-28 1971-05-04 Ibm Method for epitaxially growing silicon carbide onto a crystalline substrate
US3600645A (en) * 1969-06-11 1971-08-17 Westinghouse Electric Corp Silicon carbide semiconductor device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544755A (en) * 1948-01-29 1951-03-13 Bell Telephone Labor Inc Electron camera tube
US2698912A (en) * 1951-01-17 1955-01-04 Hartford Nat Bank & Trust Co X-ray image amplifier
US3444412A (en) * 1963-03-12 1969-05-13 Edward Fokko De Haan Photo-responsive device having photo-sensitive pbo layer with portions of different conductivity types
US3310700A (en) * 1964-05-28 1967-03-21 Rca Corp Photoconductive device incorporating stabilizing layers on the face of the selenium layer
US3505551A (en) * 1966-10-24 1970-04-07 Gen Electrodynamics Corp Photoconductive layer having reduced resistivity portions in pattern form
US3577285A (en) * 1968-03-28 1971-05-04 Ibm Method for epitaxially growing silicon carbide onto a crystalline substrate
US3600645A (en) * 1969-06-11 1971-08-17 Westinghouse Electric Corp Silicon carbide semiconductor device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891887A (en) * 1972-10-03 1975-06-24 English Electric Valve Co Ltd Semiconductor devices
US3988758A (en) * 1974-07-10 1976-10-26 Nippon Electric Company, Ltd. Semiconductor camera-tube target
WO1992004609A1 (en) * 1990-08-31 1992-03-19 Dayco Products, Inc. Fuel dispensing system and method of making the same
US5289949A (en) 1992-06-22 1994-03-01 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Multi-cavity dispensing refill cartridge

Also Published As

Publication number Publication date
DE2058640A1 (de) 1971-06-24
NL6919053A (enrdf_load_stackoverflow) 1971-06-22
FR2073859A5 (enrdf_load_stackoverflow) 1971-10-01
GB1277568A (en) 1972-06-14

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