JPS5711333A - Slit scanning optical system with variable magnification function - Google Patents

Slit scanning optical system with variable magnification function

Info

Publication number
JPS5711333A
JPS5711333A JP8557780A JP8557780A JPS5711333A JP S5711333 A JPS5711333 A JP S5711333A JP 8557780 A JP8557780 A JP 8557780A JP 8557780 A JP8557780 A JP 8557780A JP S5711333 A JPS5711333 A JP S5711333A
Authority
JP
Japan
Prior art keywords
image
optical
optical system
lens
slit scanning
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
JP8557780A
Other languages
Japanese (ja)
Inventor
Kazuo Minoura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP8557780A priority Critical patent/JPS5711333A/en
Priority to DE19803025468 priority patent/DE3025468A1/en
Publication of JPS5711333A publication Critical patent/JPS5711333A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/0005—Optical objectives specially designed for the purposes specified below having F-Theta characteristic
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Lenses (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To reduce the movement of an optical element and to perform speedy optical sanning by moving at least one optical element in an image formation optical system in the direction perpendicular to the optical axis and forming a slit scanning image on both a surface to be scanned and a conjugate surface. CONSTITUTION:The 1st surface 1 and the 3rd surface 3 are used in common to a lens 5 by an image magnification and a lens 4 for image reduction and the 3rd surface 3 and an image formation surface 2 are also used in common by the lens 5. When a point Q at the distance L1 from the optical axis of surface 1 is scanned by moving the lens 5 by distance DELTAh2 in the direction perpendicular to the optical axis, the condition DELTAh2<1/2.L1 is satisfied if the variable magnification ratio beta image-formed on the surface 2 is 0<beta<1. When comparing this optical system with the case that the image formation optical system formed by an optical element is moved by distance 1/2L1 to form an image equal to the original one, the movement of the optical element is reduced and the slit scanning magnification changing image is formed speedy. When plural optical elements are moved, the same result is obtained.
JP8557780A 1979-07-05 1980-06-24 Slit scanning optical system with variable magnification function Pending JPS5711333A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8557780A JPS5711333A (en) 1980-06-24 1980-06-24 Slit scanning optical system with variable magnification function
DE19803025468 DE3025468A1 (en) 1979-07-05 1980-07-04 Compressed movement scanner for photocopier - has two sets of lenses with relative orthogonal movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8557780A JPS5711333A (en) 1980-06-24 1980-06-24 Slit scanning optical system with variable magnification function

Publications (1)

Publication Number Publication Date
JPS5711333A true JPS5711333A (en) 1982-01-21

Family

ID=13862660

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8557780A Pending JPS5711333A (en) 1979-07-05 1980-06-24 Slit scanning optical system with variable magnification function

Country Status (1)

Country Link
JP (1) JPS5711333A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61251815A (en) * 1985-04-30 1986-11-08 Minolta Camera Co Ltd Tilt and swing lens
JPS63201623A (en) * 1987-02-18 1988-08-19 Canon Inc Photographic lens with vibration preventing function
JPH01167724A (en) * 1987-12-23 1989-07-03 Canon Inc Photographic optical system for stabilizing image
EP3118663A1 (en) * 2015-07-15 2017-01-18 Vincenc Jutersek An optical component for an optical instrument, and methods of use for enhancing an image intensity or spatial resolution

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039563A (en) * 1973-07-09 1975-04-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039563A (en) * 1973-07-09 1975-04-11

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61251815A (en) * 1985-04-30 1986-11-08 Minolta Camera Co Ltd Tilt and swing lens
JPS63201623A (en) * 1987-02-18 1988-08-19 Canon Inc Photographic lens with vibration preventing function
JPH01167724A (en) * 1987-12-23 1989-07-03 Canon Inc Photographic optical system for stabilizing image
EP3118663A1 (en) * 2015-07-15 2017-01-18 Vincenc Jutersek An optical component for an optical instrument, and methods of use for enhancing an image intensity or spatial resolution
WO2017009246A1 (en) * 2015-07-15 2017-01-19 Vincenc Jutersek An optical component for an optical instrument, and methods of use for enhancing an image intensity or spatial resolution

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