JPS5673970A - Light source for image reader - Google Patents

Light source for image reader

Info

Publication number
JPS5673970A
JPS5673970A JP15103579A JP15103579A JPS5673970A JP S5673970 A JPS5673970 A JP S5673970A JP 15103579 A JP15103579 A JP 15103579A JP 15103579 A JP15103579 A JP 15103579A JP S5673970 A JPS5673970 A JP S5673970A
Authority
JP
Japan
Prior art keywords
band shape
linear
source
emitting means
light emitting
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.)
Granted
Application number
JP15103579A
Other languages
Japanese (ja)
Other versions
JPS6349344B2 (en
Inventor
Kinzo Nonomura
Akimoto Serizawa
Masanori Watanabe
Yoshinobu Takesako
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 JP15103579A priority Critical patent/JPS5673970A/en
Publication of JPS5673970A publication Critical patent/JPS5673970A/en
Publication of JPS6349344B2 publication Critical patent/JPS6349344B2/ja
Granted 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
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • 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)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To make small the device and to reduce the power consumption, by constituting the light source with a linear discharge tube having the light emitting means which emits light through band shape electron beams from a linear electronic source. CONSTITUTION:In the constrcution of a linear electron source, conductive aquaduck 32 is coated on the upper surface in the glass tube 31, and a cathode line 33 consisting of tungsten coated with thermal electron emission material is suspended beneath it, and a band shape electron beam pickup electrode 34 is located further below it. The band shape electron beam pickup electrode 34 is constituted with the metal plate along the cathode line 33 having the slit in the center. Further, the light emitting means is formed by coating a glass base 35 with a fluorescent substance 36 and metallizing the surface with aluminum thin film.
JP15103579A 1979-11-20 1979-11-20 Light source for image reader Granted JPS5673970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15103579A JPS5673970A (en) 1979-11-20 1979-11-20 Light source for image reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15103579A JPS5673970A (en) 1979-11-20 1979-11-20 Light source for image reader

Publications (2)

Publication Number Publication Date
JPS5673970A true JPS5673970A (en) 1981-06-19
JPS6349344B2 JPS6349344B2 (en) 1988-10-04

Family

ID=15509869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15103579A Granted JPS5673970A (en) 1979-11-20 1979-11-20 Light source for image reader

Country Status (1)

Country Link
JP (1) JPS5673970A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931939A (en) * 1982-08-17 1984-02-21 Ricoh Co Ltd Optical device for original illumination and image formation
JPS59178444A (en) * 1983-03-30 1984-10-09 Ricoh Co Ltd Illuminating device
US4594527A (en) * 1983-10-06 1986-06-10 Xerox Corporation Vacuum fluorescent lamp having a flat geometry
WO1992016013A1 (en) * 1991-03-06 1992-09-17 Miyota Kabushiki Kaisha Cathode luminescence device and phosphor powder
WO1993006616A1 (en) * 1991-09-26 1993-04-01 Seiko Epson Corporation Lighting device and image readout device
JP2008108635A (en) * 2006-10-26 2008-05-08 Matsushita Electric Works Ltd Discharge plasma generation auxiliary device, light-emitting device, and lighting fixture

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931939A (en) * 1982-08-17 1984-02-21 Ricoh Co Ltd Optical device for original illumination and image formation
JPS59178444A (en) * 1983-03-30 1984-10-09 Ricoh Co Ltd Illuminating device
US4594527A (en) * 1983-10-06 1986-06-10 Xerox Corporation Vacuum fluorescent lamp having a flat geometry
WO1992016013A1 (en) * 1991-03-06 1992-09-17 Miyota Kabushiki Kaisha Cathode luminescence device and phosphor powder
WO1993006616A1 (en) * 1991-09-26 1993-04-01 Seiko Epson Corporation Lighting device and image readout device
US5422537A (en) * 1991-09-26 1995-06-06 Seiko Epson Corporation Illumination unit and image reading apparatus
JP2008108635A (en) * 2006-10-26 2008-05-08 Matsushita Electric Works Ltd Discharge plasma generation auxiliary device, light-emitting device, and lighting fixture

Also Published As

Publication number Publication date
JPS6349344B2 (en) 1988-10-04

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