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JPS57183175A - Photoelectric converter - Google Patents

Photoelectric converter

Info

Publication number
JPS57183175A
JPS57183175A JP6761681A JP6761681A JPS57183175A JP S57183175 A JPS57183175 A JP S57183175A JP 6761681 A JP6761681 A JP 6761681A JP 6761681 A JP6761681 A JP 6761681A JP S57183175 A JPS57183175 A JP S57183175A
Authority
JP
Japan
Prior art keywords
photodetecting element
light source
light shielding
hot
fluorescent tube
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
JP6761681A
Other languages
Japanese (ja)
Inventor
Hisao Oota
Tetsuo Tajiri
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6761681A priority Critical patent/JPS57183175A/en
Publication of JPS57183175A publication Critical patent/JPS57183175A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Heads (AREA)

Abstract

PURPOSE:To improve an S/N ratio and to reduce size by placing a hot-cathode vacuum fluorescent tube light source in contact with or closely to a large-sized image sensor equipped with a photodetecting element which has a light shielding layer on a transparent substrate. CONSTITUTION:Luminous flux 12 emitted from a hot-cathode vacuum fluorescent tube light source 9 illuminates a transmitted original 1 through gaps between light shielding layers 10, a transparent insulating layer 11, and a transparent protective layer 7. Reflected light from the transmitted original 1 is supplied to a photodetecting element 6 for photoelectric conversion. Lighting luminous flux 12 travels directly toward the photodetecting element, but it is shielding from by the light shielding layers 10, so it never reaches the photodetecting element and causes no disturbance. Therefore, a high SN ratio photo-electric converter is constituted and the light source 9 is placed in contact with a transparent substrate 5, so that the efficiency of lighting is excellent.
JP6761681A 1981-05-07 1981-05-07 Photoelectric converter Pending JPS57183175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6761681A JPS57183175A (en) 1981-05-07 1981-05-07 Photoelectric converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6761681A JPS57183175A (en) 1981-05-07 1981-05-07 Photoelectric converter

Publications (1)

Publication Number Publication Date
JPS57183175A true JPS57183175A (en) 1982-11-11

Family

ID=13350069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6761681A Pending JPS57183175A (en) 1981-05-07 1981-05-07 Photoelectric converter

Country Status (1)

Country Link
JP (1) JPS57183175A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0619608A2 (en) * 1993-04-07 1994-10-12 MITSUI TOATSU CHEMICALS, Inc. Circuit board for optical devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0619608A2 (en) * 1993-04-07 1994-10-12 MITSUI TOATSU CHEMICALS, Inc. Circuit board for optical devices
EP0619608A3 (en) * 1993-04-07 1994-10-19 MITSUI TOATSU CHEMICALS, Inc. Circuit board for optical devices

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