JPS5577735A - Partial variable magnification device of projected image of projector - Google Patents
Partial variable magnification device of projected image of projectorInfo
- Publication number
- JPS5577735A JPS5577735A JP15231078A JP15231078A JPS5577735A JP S5577735 A JPS5577735 A JP S5577735A JP 15231078 A JP15231078 A JP 15231078A JP 15231078 A JP15231078 A JP 15231078A JP S5577735 A JPS5577735 A JP S5577735A
- Authority
- JP
- Japan
- Prior art keywords
- film
- changing
- projection
- projected image
- movable
- 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
Abstract
PURPOSE: To readily perform the variable power projection of the required portions of images with a simple constitution by combining the optical path changing with reflecting mirrors and the movement of a projection lens, etc.
CONSTITUTION: Mount films 4 and 1 or projecting lens 5 is made freely movable in the direction rectangular to the optical axis a and a movable mirror 6 is provided on the transmitted light type screen 9 of stationary mirrors 7, 8. If with this arrangement one or both of the mount film 4 and projecting lens 5 are moved in the direction rectangular to the optical axis a and the changing the reflecting optical path is done by turning the movable mirror 6, then the arbitrary portion of the standard projected image plane is variable-magnification projected on the transmitted light type screen 9 with the simple constitution and operation. Even with a 8-mm motion picture projector or the like, the similar partial variable magnification projection may be accomplished by changing the engagement position of the film escapement claw with the film or making the film gate movable.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15231078A JPS5577735A (en) | 1978-12-08 | 1978-12-08 | Partial variable magnification device of projected image of projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15231078A JPS5577735A (en) | 1978-12-08 | 1978-12-08 | Partial variable magnification device of projected image of projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5577735A true JPS5577735A (en) | 1980-06-11 |
Family
ID=15537723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15231078A Pending JPS5577735A (en) | 1978-12-08 | 1978-12-08 | Partial variable magnification device of projected image of projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5577735A (en) |
-
1978
- 1978-12-08 JP JP15231078A patent/JPS5577735A/en active Pending
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