JPS56167119A - Driving device for scanning type optical system - Google Patents
Driving device for scanning type optical systemInfo
- Publication number
- JPS56167119A JPS56167119A JP7032780A JP7032780A JPS56167119A JP S56167119 A JPS56167119 A JP S56167119A JP 7032780 A JP7032780 A JP 7032780A JP 7032780 A JP7032780 A JP 7032780A JP S56167119 A JPS56167119 A JP S56167119A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- spring
- scan
- returning
- moves
- 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
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
- G03B27/522—Projection optics
- G03B27/525—Projection optics for slit exposure
- G03B27/526—Projection optics for slit exposure in which the projection optics move
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
PURPOSE:To scan an optical system at a constant speed and to return it at a high speed, by driving the optical system in one direction through a cam device and by returning the optical system by the righting moment of a spring in an independently provided spring expanding device. CONSTITUTION:When an optical system unit 1 at a scan starting position, electric motors 10 and 25 are driven under a command. When a plate cam 7 is rotated clockwise (as shown by an arrow) by the electric motor 10, the optical system unit 1 moves and scans to right through a lever 13. Since a spring 16 is weakened at this time, its scanning speed is constant. On the other hand, as the electric motor 25 drives the driven pulley of a clutch device 20 counterclockwise, a hook member 18 moves to right against the strength of a spring 17. At a scan ending point, the electric motors 10 and 25 stop and the clutch device 20 is turned off, thereby returning the optical unit 1 engaged with the hook member 18 at a high speed by the strong retaining strength of the tension spring 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7032780A JPS56167119A (en) | 1980-05-27 | 1980-05-27 | Driving device for scanning type optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7032780A JPS56167119A (en) | 1980-05-27 | 1980-05-27 | Driving device for scanning type optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56167119A true JPS56167119A (en) | 1981-12-22 |
Family
ID=13428227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7032780A Pending JPS56167119A (en) | 1980-05-27 | 1980-05-27 | Driving device for scanning type optical system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56167119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0547598U (en) * | 1991-12-04 | 1993-06-25 | 日本精工株式会社 | Linear actuation unit |
-
1980
- 1980-05-27 JP JP7032780A patent/JPS56167119A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0547598U (en) * | 1991-12-04 | 1993-06-25 | 日本精工株式会社 | Linear actuation unit |
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