JPS54147034A - Lighting device of copying machine also serving telephotograph - Google Patents

Lighting device of copying machine also serving telephotograph

Info

Publication number
JPS54147034A
JPS54147034A JP5587478A JP5587478A JPS54147034A JP S54147034 A JPS54147034 A JP S54147034A JP 5587478 A JP5587478 A JP 5587478A JP 5587478 A JP5587478 A JP 5587478A JP S54147034 A JPS54147034 A JP S54147034A
Authority
JP
Japan
Prior art keywords
telephotographing
light sources
illuminance distribution
imaging lens
copying
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
JP5587478A
Other languages
Japanese (ja)
Inventor
Yohei Ikezu
Yutaka Ebi
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 JP5587478A priority Critical patent/JPS54147034A/en
Publication of JPS54147034A publication Critical patent/JPS54147034A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Scanning Arrangements (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE: To enable the illuminance distribution of recording face and photo detecting face to be evened simply by moving light sources or exposure regulating part according to copying or telephotographing by providing the light source having been set at the illuminance distribution at the copying or telephotographing.
CONSTITUTION: Light sources 12 whose centers are aligned to an optical axis ϕ2 are provided to the focus of a reflecting mirror of elipse in section. And emitting parts 13 comprishing disposing filaments l0, l1, l2, l3 so as to become denser toward both ends from the center by matching the aperture efficiency cos4 side of an imaging lens are provided to thses light sources, wherein the original face illuminance distribution is set at the illuminance distribution of the imaging lens at the telephotographing.The light sources 12 are provided movably in the transverse direction and position-fixably. The light sources 12 are so disposed that they become symmetrical with the optical axis ϕ2 of the telephotographing system as a center at the time of telephotographing to provide the illuminance distribution of the imaging lens for telephotographing, whereby illumination is accomplished.
COPYRIGHT: (C)1979,JPO&Japio
JP5587478A 1978-05-11 1978-05-11 Lighting device of copying machine also serving telephotograph Pending JPS54147034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5587478A JPS54147034A (en) 1978-05-11 1978-05-11 Lighting device of copying machine also serving telephotograph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5587478A JPS54147034A (en) 1978-05-11 1978-05-11 Lighting device of copying machine also serving telephotograph

Publications (1)

Publication Number Publication Date
JPS54147034A true JPS54147034A (en) 1979-11-16

Family

ID=13011230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5587478A Pending JPS54147034A (en) 1978-05-11 1978-05-11 Lighting device of copying machine also serving telephotograph

Country Status (1)

Country Link
JP (1) JPS54147034A (en)

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