FR2315762A1 - Low light level photocathode - has electrons emitted at active surface passing through substrate microchannels and positive electrode - Google Patents

Low light level photocathode - has electrons emitted at active surface passing through substrate microchannels and positive electrode

Info

Publication number
FR2315762A1
FR2315762A1 FR7520396A FR7520396A FR2315762A1 FR 2315762 A1 FR2315762 A1 FR 2315762A1 FR 7520396 A FR7520396 A FR 7520396A FR 7520396 A FR7520396 A FR 7520396A FR 2315762 A1 FR2315762 A1 FR 2315762A1
Authority
FR
France
Prior art keywords
positive electrode
active surface
photocathode
light level
low light
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.)
Granted
Application number
FR7520396A
Other languages
French (fr)
Other versions
FR2315762B1 (en
Inventor
Henri Rougeot
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7520396A priority Critical patent/FR2315762A1/en
Publication of FR2315762A1 publication Critical patent/FR2315762A1/en
Application granted granted Critical
Publication of FR2315762B1 publication Critical patent/FR2315762B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/24—Dynodes having potential gradient along their surfaces
    • H01J43/246—Microchannel plates [MCP]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/506—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output tubes using secondary emission effect
    • H01J31/507—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output tubes using secondary emission effect using a large number of channels, e.g. microchannel plates

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Hybrid Cells (AREA)

Abstract

The photocathode, for use with low incident light intensities consists of a monocrystalline p-type semiconductor layer (3) with an active electronegative surface (4). The layer is formed on an insulating substrate (1) with a positive electrode on its opposite face. The substrate and the layer have parallel microchannels (2) extending between the active surface and the positive electrode. Electrons produced at the active surface by incident light travel down these channels towards the positive electrode. They then pass through holes in the electrode and strike an electropositive screen.
FR7520396A 1975-06-27 1975-06-27 Low light level photocathode - has electrons emitted at active surface passing through substrate microchannels and positive electrode Granted FR2315762A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7520396A FR2315762A1 (en) 1975-06-27 1975-06-27 Low light level photocathode - has electrons emitted at active surface passing through substrate microchannels and positive electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7520396A FR2315762A1 (en) 1975-06-27 1975-06-27 Low light level photocathode - has electrons emitted at active surface passing through substrate microchannels and positive electrode

Publications (2)

Publication Number Publication Date
FR2315762A1 true FR2315762A1 (en) 1977-01-21
FR2315762B1 FR2315762B1 (en) 1977-12-02

Family

ID=9157236

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7520396A Granted FR2315762A1 (en) 1975-06-27 1975-06-27 Low light level photocathode - has electrons emitted at active surface passing through substrate microchannels and positive electrode

Country Status (1)

Country Link
FR (1) FR2315762A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104171A5 (en) * 1970-08-13 1972-04-14 Philips Nv

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104171A5 (en) * 1970-08-13 1972-04-14 Philips Nv

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ARTICLE DE P. GORDAN INTITULE: "ELEKTRONENEMITTER NEGATIVER ELEKTRONENAFFINITAT ALS PHOTOKATHODEN", PARU DANS "WISSENSCHAFTLICHE BERICHTE AEG-TELEFUNKEN" 45, 1972, NO. 3, PAGES 127 - 129) *

Also Published As

Publication number Publication date
FR2315762B1 (en) 1977-12-02

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Legal Events

Date Code Title Description
ST Notification of lapse