GB487921A - Improvements in or relating to photosensitive surfaces - Google Patents

Improvements in or relating to photosensitive surfaces

Info

Publication number
GB487921A
GB487921A GB21638/37A GB2163837A GB487921A GB 487921 A GB487921 A GB 487921A GB 21638/37 A GB21638/37 A GB 21638/37A GB 2163837 A GB2163837 A GB 2163837A GB 487921 A GB487921 A GB 487921A
Authority
GB
United Kingdom
Prior art keywords
depositing
photo
film
electric
aug
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
Application number
GB21638/37A
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.)
Farnsworth Television Inc
Original Assignee
Farnsworth Television Inc
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 Farnsworth Television Inc filed Critical Farnsworth Television Inc
Publication of GB487921A publication Critical patent/GB487921A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/16—Photoelectric discharge tubes not involving the ionisation of a gas having photo- emissive cathode, e.g. alkaline photoelectric cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
    • H01J40/06—Photo-emissive cathodes

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

487,921. Photo-electric cells. FARNSWORTH TELEVISION, Inc. Aug. 5, 1937, No. 21638. Convention date, Aug. 18, 1936. [Class 39 (i)] A translucent photo-electric surface is formed by depositing an opaque layer of silver on a glass or other translucent wall under conditions which provide occlusion of moisture, heating the layer until it becomes light transmitting and substantially nonconducting, oxidizing the film, and depositing an alkali metal, such as caesium, until the film again becomes conducting. The occlusion of moisture may be effected by depositing the film on the supporting surface which has been exposed at ordinary temperatures and degrees of humidity, or by depositing it from a solution. The drawing shows the application to a photoelectric cell in which the light is projected on the outer surface of the cell on which the photo-electric cathode 3 is deposited and electrons are emitted from the inner surface facing the anode 2.
GB21638/37A 1936-08-18 1937-08-05 Improvements in or relating to photosensitive surfaces Expired GB487921A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US487921XA 1936-08-18 1936-08-18
US96612A US2123412A (en) 1936-08-18 1936-08-18 Mosaic and translucent surface

Publications (1)

Publication Number Publication Date
GB487921A true GB487921A (en) 1938-06-28

Family

ID=26726533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21638/37A Expired GB487921A (en) 1936-08-18 1937-08-05 Improvements in or relating to photosensitive surfaces

Country Status (2)

Country Link
US (1) US2123412A (en)
GB (1) GB487921A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506633A (en) * 1946-10-24 1950-05-09 Rca Corp End-on phototube
US2950405A (en) * 1958-02-18 1960-08-23 Optische Ind De Oude Delft Nv Electron-optical device

Also Published As

Publication number Publication date
US2123412A (en) 1938-07-12

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