JPS5675674A - Exposure projecting device - Google Patents

Exposure projecting device

Info

Publication number
JPS5675674A
JPS5675674A JP15245479A JP15245479A JPS5675674A JP S5675674 A JPS5675674 A JP S5675674A JP 15245479 A JP15245479 A JP 15245479A JP 15245479 A JP15245479 A JP 15245479A JP S5675674 A JPS5675674 A JP S5675674A
Authority
JP
Japan
Prior art keywords
mirror
projection lens
optical axis
displacement
steps
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
JP15245479A
Other languages
Japanese (ja)
Inventor
Yoshinori Hashida
Yasuhisa Matsuda
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.)
SEBUN ENGINEERING KK
SEVEN ENG KK
Original Assignee
SEBUN ENGINEERING KK
SEVEN ENG KK
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 SEBUN ENGINEERING KK, SEVEN ENG KK filed Critical SEBUN ENGINEERING KK
Priority to JP15245479A priority Critical patent/JPS5675674A/en
Publication of JPS5675674A publication Critical patent/JPS5675674A/en
Pending legal-status Critical Current

Links

Landscapes

  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To make it possible to vary the contraction scale ratio of the projection optical image without steps and make the device small-size, by providing the second mirror form control mechanism which changes the angle of the second mirror, which projects the light from the first mirror, for the optical axis. CONSTITUTION:A projection lens displacement mechanism is provided which displaces projection lens 5 along optical axis L2 of lens 5 without steps, and the second mirror form control mechanism which displaces the second mirror 6 along optical axis L2 of lens 5 and changes the angle of the second mirror 6 for optical axis L2 is so provided that displacement of the focus position generated by displacement of projection lens 5 dependent upon the projection lens displacement mechanism may be compensated. A helicoid mechanism or the like is most suitable as the projection lens displacement mechanism, and this displacement mechanism and the second mirror form control mechanism are interlocked with each other, as a result, the construction scale ratio can be varied without steps, and the occupation space can be small to make the device small-size.
JP15245479A 1979-11-27 1979-11-27 Exposure projecting device Pending JPS5675674A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15245479A JPS5675674A (en) 1979-11-27 1979-11-27 Exposure projecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15245479A JPS5675674A (en) 1979-11-27 1979-11-27 Exposure projecting device

Publications (1)

Publication Number Publication Date
JPS5675674A true JPS5675674A (en) 1981-06-22

Family

ID=15540865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15245479A Pending JPS5675674A (en) 1979-11-27 1979-11-27 Exposure projecting device

Country Status (1)

Country Link
JP (1) JPS5675674A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918941A (en) * 1982-07-23 1984-01-31 Mita Ind Co Ltd Optical device of electrostatic copying machine capable of variable power copying

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918941A (en) * 1982-07-23 1984-01-31 Mita Ind Co Ltd Optical device of electrostatic copying machine capable of variable power copying

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