JPS5577735A - Partial variable magnification device of projected image of projector - Google Patents

Partial variable magnification device of projected image of projector

Info

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
Application number
JP15231078A
Other languages
Japanese (ja)
Inventor
Kimichika Yamada
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.)
Nidec Copal Corp
Original Assignee
Nidec Copal Corp
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 Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP15231078A priority Critical patent/JPS5577735A/en
Publication of JPS5577735A publication Critical patent/JPS5577735A/en
Pending legal-status Critical Current

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
JP15231078A 1978-12-08 1978-12-08 Partial variable magnification device of projected image of projector Pending JPS5577735A (en)

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)

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