JPS5687010A - Variable magnification optical device - Google Patents
Variable magnification optical deviceInfo
- Publication number
- JPS5687010A JPS5687010A JP16434479A JP16434479A JPS5687010A JP S5687010 A JPS5687010 A JP S5687010A JP 16434479 A JP16434479 A JP 16434479A JP 16434479 A JP16434479 A JP 16434479A JP S5687010 A JPS5687010 A JP S5687010A
- Authority
- JP
- Japan
- Prior art keywords
- copying
- lens
- disc
- optical path
- 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.)
- Pending
Links
Landscapes
- Lenses (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
PURPOSE: To enable the reduction copying and magnification copying which are mutually in a reciprocal relation other than unmagnification copying to be performed easily and accurately by the simple constitution of rotating an imaging element 180° around the center of the entire optical path.
CONSTITUTION: An original 1 is placed on an original platen glass 2. In the case of magnification copying, a lens L1 is placed on the optical path on the side near the original 1 by the rotation controlling of a disc 4, and the image of the original 1 is formed on the outside circumferential surface of a photosenstivie drum 3 via a stationary mirror M5, the lens L1 and a stationary mirror M16. In the case of reduction copying in a reciprocal relation with this, the disc 4 rotates 180° from the state of the magnification copying and the lens L1 is placed on the side far from the original 1 in the optical path. In the case of unmagnification copying, the lens L1 is placed in the position deviated from the optical path by the rotation controlling of the disc 4 and a lens L2 for unmagnification fixed to the disc 5 is inserted into the optical path by the rotation controlling of the disc 4.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16434479A JPS5687010A (en) | 1979-12-18 | 1979-12-18 | Variable magnification optical device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16434479A JPS5687010A (en) | 1979-12-18 | 1979-12-18 | Variable magnification optical device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5687010A true JPS5687010A (en) | 1981-07-15 |
Family
ID=15791378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16434479A Pending JPS5687010A (en) | 1979-12-18 | 1979-12-18 | Variable magnification optical device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5687010A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60205532A (en) * | 1984-03-30 | 1985-10-17 | Fuji Xerox Co Ltd | Optical system of copying machine |
JPS6382409A (en) * | 1986-09-27 | 1988-04-13 | Fuji Photo Optical Co Ltd | Optical system for copying machine |
-
1979
- 1979-12-18 JP JP16434479A patent/JPS5687010A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60205532A (en) * | 1984-03-30 | 1985-10-17 | Fuji Xerox Co Ltd | Optical system of copying machine |
JPS6382409A (en) * | 1986-09-27 | 1988-04-13 | Fuji Photo Optical Co Ltd | Optical system for copying machine |
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