JPS56159667A - Slit exposure type lighting device - Google Patents

Slit exposure type lighting device

Info

Publication number
JPS56159667A
JPS56159667A JP6316380A JP6316380A JPS56159667A JP S56159667 A JPS56159667 A JP S56159667A JP 6316380 A JP6316380 A JP 6316380A JP 6316380 A JP6316380 A JP 6316380A JP S56159667 A JPS56159667 A JP S56159667A
Authority
JP
Japan
Prior art keywords
light
illumination
lamp
slit exposure
original surface
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
JP6316380A
Other languages
Japanese (ja)
Inventor
Mitsuki Sagane
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 JP6316380A priority Critical patent/JPS56159667A/en
Publication of JPS56159667A publication Critical patent/JPS56159667A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/54—Lamp housings; Illuminating means
    • G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE:To improve the efficiency of illumination by performing accurate slit exposure while preventing scattered light, by fitting a light source for illumination at a prescribed relative angle. CONSTITUTION:Two-division type cylindrical, ellipse-surface reflectors 13 and 14 are provided; tungsten halogen lamps 1 are arranged at one focus, and an original surface on an original table 11 is arranged at the other focus. Here, the diameter of the hollow cylindrical body 3 of each lamp 1 is denoted as D, the length between a light emission part 2 and a projection part 4 for sealing as L, the length of the projection part 4 as DELTAl, and the angle of a light beam (i) to the horizontal direction as theta1. In this case, the lamp 1 is fitted at the angle shown by the equation (I). Consequently, scattered light from the lamp 1 is never reflected directly by reflectors 13 and 14 to light the original surface, and the irradiation of the original surface becomes uniform to perform accurate slit exposure, improving the efficiency of illumination.
JP6316380A 1980-05-13 1980-05-13 Slit exposure type lighting device Pending JPS56159667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6316380A JPS56159667A (en) 1980-05-13 1980-05-13 Slit exposure type lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6316380A JPS56159667A (en) 1980-05-13 1980-05-13 Slit exposure type lighting device

Publications (1)

Publication Number Publication Date
JPS56159667A true JPS56159667A (en) 1981-12-09

Family

ID=13221291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6316380A Pending JPS56159667A (en) 1980-05-13 1980-05-13 Slit exposure type lighting device

Country Status (1)

Country Link
JP (1) JPS56159667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0418841U (en) * 1990-06-05 1992-02-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0418841U (en) * 1990-06-05 1992-02-17

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