GB379893A - Improvements in or relating to photo-electric devices - Google Patents

Improvements in or relating to photo-electric devices

Info

Publication number
GB379893A
GB379893A GB28552/31A GB2855231A GB379893A GB 379893 A GB379893 A GB 379893A GB 28552/31 A GB28552/31 A GB 28552/31A GB 2855231 A GB2855231 A GB 2855231A GB 379893 A GB379893 A GB 379893A
Authority
GB
United Kingdom
Prior art keywords
electrode
photo
electric
layer
cathode
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
GB28552/31A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB379893A publication Critical patent/GB379893A/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

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Luminescent Compositions (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB28552/31A 1930-12-07 1931-10-14 Improvements in or relating to photo-electric devices Expired GB379893A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1930N0140630 DE680108C (de) 1930-12-07 1930-12-07 Photoelektrische Vorrichtung

Publications (1)

Publication Number Publication Date
GB379893A true GB379893A (en) 1932-09-08

Family

ID=34088566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28552/31A Expired GB379893A (en) 1930-12-07 1931-10-14 Improvements in or relating to photo-electric devices

Country Status (6)

Country Link
US (1) US2031864A (fr)
AT (1) AT132202B (fr)
CH (1) CH161166A (fr)
DE (1) DE680108C (fr)
FR (1) FR726622A (fr)
GB (1) GB379893A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558337A (en) * 1945-12-10 1951-06-26 Howard A Chinn Noise generator
US2500941A (en) * 1946-03-07 1950-03-21 Friedman Herbert Geiger-mueller counter structure

Also Published As

Publication number Publication date
US2031864A (en) 1936-02-25
CH161166A (de) 1933-04-15
FR726622A (fr) 1932-06-01
AT132202B (de) 1933-03-10
DE680108C (de) 1939-08-22

Similar Documents

Publication Publication Date Title
US2060977A (en) Photoelectric device
GB472173A (en) Improvements in or relating to a device for obtaining a visual image of an object obscured from the natural vision
GB379893A (en) Improvements in or relating to photo-electric devices
GB496556A (en) Improvements in electrodes for electron discharge devices
US2147669A (en) Secondary electron emitting electrode
US3634690A (en) Tubular photocell with secondary emission from internal surface
GB363103A (en) Improvements in and relating to photo-electric apparatus
GB1417452A (en) Image tube employing high field electron emission suppression
US1980702A (en) Phototube
US2438587A (en) Phototube containing means to counteract negative wall charges
US2112975A (en) Photoelectric tube
US2066081A (en) Phototube
GB362838A (en) Improvements in or relating to photo-electric cells
GB375639A (en) Improvements in or relating to photo-electric cells
US3278782A (en) Electron emitter comprising photoconductive and low work function layers
US3564321A (en) Mesh-reinforced secondary electron conduction target for camera tubes
US3254252A (en) Image device
GB364006A (en) Improvements in and relating to photo-electric apparatus
US2642547A (en) Device of the kind comprising an electronic tube having a ribbonshaped beam which is deflected and held in different positions
US2171233A (en) Phototube
US2073453A (en) Phototube
US2266665A (en) Amplifier
US2940003A (en) Counting tube arrangement
GB434643A (en) Improvements in or relating to electron discharge devices
US1677316A (en) Photoelectric cell