JPS5779586A - Lighting device of manual subscanning type reader - Google Patents

Lighting device of manual subscanning type reader

Info

Publication number
JPS5779586A
JPS5779586A JP55154513A JP15451380A JPS5779586A JP S5779586 A JPS5779586 A JP S5779586A JP 55154513 A JP55154513 A JP 55154513A JP 15451380 A JP15451380 A JP 15451380A JP S5779586 A JPS5779586 A JP S5779586A
Authority
JP
Japan
Prior art keywords
light source
mirror
original surface
linearly
original
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
JP55154513A
Other languages
Japanese (ja)
Other versions
JPS6333192B2 (en
Inventor
Toshiyuki Iguchi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55154513A priority Critical patent/JPS5779586A/en
Publication of JPS5779586A publication Critical patent/JPS5779586A/en
Publication of JPS6333192B2 publication Critical patent/JPS6333192B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Character Input (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To miniaturize and to improve readout performance while improving lighting efficiency, by focusing scattering light from a light source upon a readout area on an original surface linearly by one elliptic mirror, and a plane mirror and the other elliptic mirror. CONSTITUTION:A reader is constituted including a solid-state line image sensor IS which reads picture information on an original O linearly and converts it into a picture signal, and an imaging optical system L which forms an image of the picture information on the original lit linearly by a light source LS on the sensor IS; and an elliptic reflecting mirror Mc whose 1st focal point coincides with the light source position while the 2nd facal point (c) coincides with the original surface as the 1st focusing means focuses scattering light from the light source on the original surface linearly. Anther ellipstic reflecting mirror Me, as the 2nd focusing means, whose 1st focal point coincides with a position (a) of an imaginary light source image by a plane mirror Md under the ellipstic mirror Mc while the 2nd focal point coincides with a position (b) a little bit farther from the original surface focuses the scattering light from the light source on the linear focusing part formed on the original surface by the 1st focusing means.
JP55154513A 1980-11-02 1980-11-02 Lighting device of manual subscanning type reader Granted JPS5779586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55154513A JPS5779586A (en) 1980-11-02 1980-11-02 Lighting device of manual subscanning type reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154513A JPS5779586A (en) 1980-11-02 1980-11-02 Lighting device of manual subscanning type reader

Publications (2)

Publication Number Publication Date
JPS5779586A true JPS5779586A (en) 1982-05-18
JPS6333192B2 JPS6333192B2 (en) 1988-07-04

Family

ID=15585889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154513A Granted JPS5779586A (en) 1980-11-02 1980-11-02 Lighting device of manual subscanning type reader

Country Status (1)

Country Link
JP (1) JPS5779586A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6081645A (en) * 1983-10-12 1985-05-09 Tokyo Electric Co Ltd Optical reader
JPS61154055U (en) * 1985-03-14 1986-09-24

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6081645A (en) * 1983-10-12 1985-05-09 Tokyo Electric Co Ltd Optical reader
JPS61154055U (en) * 1985-03-14 1986-09-24
JPH0448046Y2 (en) * 1985-03-14 1992-11-12

Also Published As

Publication number Publication date
JPS6333192B2 (en) 1988-07-04

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