JPS54147034A - Lighting device of copying machine also serving telephotograph - Google Patents
Lighting device of copying machine also serving telephotographInfo
- 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
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
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) |
-
1978
- 1978-05-11 JP JP5587478A patent/JPS54147034A/en active Pending
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