JPS5654742A - Image pickup device - Google Patents

Image pickup device

Info

Publication number
JPS5654742A
JPS5654742A JP12986479A JP12986479A JPS5654742A JP S5654742 A JPS5654742 A JP S5654742A JP 12986479 A JP12986479 A JP 12986479A JP 12986479 A JP12986479 A JP 12986479A JP S5654742 A JPS5654742 A JP S5654742A
Authority
JP
Japan
Prior art keywords
light
square
emitting diodes
utilization
ratio
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
JP12986479A
Other languages
Japanese (ja)
Inventor
Fumihide Takeuchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12986479A priority Critical patent/JPS5654742A/en
Publication of JPS5654742A publication Critical patent/JPS5654742A/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

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

PURPOSE:To improve the ratio of light utilization and light uniformity with a simple constitution and lower cost by arranging bias light sources in parallel with each other on at least two sides of a square-shaped quartz plate. CONSTITUTION:On each facing sides of a square-sphaed quartz plate 7 arranged in front of a faceplate unit 2, a plurality of light-emitting diodes 3 are arranged line- symmetrically and in parallel. Lights emitted from each light-emitting diodes are caused to be incident symmetrically and efficiently upon the end face of the square- shaped quarz plate 7 without leaking out and transmitted to be guided within the faceplate unit 2, Therefore the ratio of utilization of the lights emitted from the light-emitting diodes 3 and light uniformity may be improved.
JP12986479A 1979-10-11 1979-10-11 Image pickup device Pending JPS5654742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12986479A JPS5654742A (en) 1979-10-11 1979-10-11 Image pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12986479A JPS5654742A (en) 1979-10-11 1979-10-11 Image pickup device

Publications (1)

Publication Number Publication Date
JPS5654742A true JPS5654742A (en) 1981-05-14

Family

ID=15020157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12986479A Pending JPS5654742A (en) 1979-10-11 1979-10-11 Image pickup device

Country Status (1)

Country Link
JP (1) JPS5654742A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52155013A (en) * 1976-06-18 1977-12-23 Hitachi Ltd Image pickup unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52155013A (en) * 1976-06-18 1977-12-23 Hitachi Ltd Image pickup unit

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