JPS56136441A - Electrofocusing type image pickup tube - Google Patents

Electrofocusing type image pickup tube

Info

Publication number
JPS56136441A
JPS56136441A JP3929280A JP3929280A JPS56136441A JP S56136441 A JPS56136441 A JP S56136441A JP 3929280 A JP3929280 A JP 3929280A JP 3929280 A JP3929280 A JP 3929280A JP S56136441 A JPS56136441 A JP S56136441A
Authority
JP
Japan
Prior art keywords
electrofocusing
image pickup
pickup tube
target
film
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.)
Pending
Application number
JP3929280A
Other languages
Japanese (ja)
Inventor
Eizo Yamaga
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3929280A priority Critical patent/JPS56136441A/en
Publication of JPS56136441A publication Critical patent/JPS56136441A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
    • H01J31/34—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at cathode potential, e.g. orthicon
    • H01J31/38—Tubes with photoconductive screen, e.g. vidicon

Abstract

PURPOSE:To enable long time continuous operation of an electrofocusing type image pickup tube, by forming a photoconductive film on the electrofocusing target then controlling the strength of light on said film in correspondense with the intermittent period of the incident infrared ray. CONSTITUTION:A photoconductive film 3 is formed at the electron beam scanning side of an elecdrofocusing target 1, while an irradiation light source 13 such as LED for said film 3 and a drive power source 14 for said light source 13 are provided. A chopper 7 is rotated by means of a motor 70 then the incident infrared rays 4 is irradiated intermittently onto the electrofocusing target 1 while an electron beam 5 is scanned from the opposite side to pick up an image signal corresponding with the incident infrared rays 4 from a signal electrode 2. Consequently the negative charge accumulated on the electron beam scanning face can be removed thereby long time continuous operation of an electrofocusing image pickup tube is enabled.
JP3929280A 1980-03-26 1980-03-26 Electrofocusing type image pickup tube Pending JPS56136441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3929280A JPS56136441A (en) 1980-03-26 1980-03-26 Electrofocusing type image pickup tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3929280A JPS56136441A (en) 1980-03-26 1980-03-26 Electrofocusing type image pickup tube

Publications (1)

Publication Number Publication Date
JPS56136441A true JPS56136441A (en) 1981-10-24

Family

ID=12549069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3929280A Pending JPS56136441A (en) 1980-03-26 1980-03-26 Electrofocusing type image pickup tube

Country Status (1)

Country Link
JP (1) JPS56136441A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161097A (en) * 1982-03-19 1983-09-24 松下電器産業株式会社 Monitoring system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58161097A (en) * 1982-03-19 1983-09-24 松下電器産業株式会社 Monitoring system

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