CA1008281A - Variable magnification zoom lens - Google Patents

Variable magnification zoom lens

Info

Publication number
CA1008281A
CA1008281A CA200,015A CA200015A CA1008281A CA 1008281 A CA1008281 A CA 1008281A CA 200015 A CA200015 A CA 200015A CA 1008281 A CA1008281 A CA 1008281A
Authority
CA
Canada
Prior art keywords
zoom lens
variable magnification
magnification zoom
variable
lens
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.)
Expired
Application number
CA200,015A
Other languages
English (en)
Other versions
CA200015S (en
Inventor
Ellis I. Betensky
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of CA1008281A publication Critical patent/CA1008281A/en
Expired 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
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • 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)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
CA200,015A 1973-07-09 1974-05-15 Variable magnification zoom lens Expired CA1008281A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US377533A US3883228A (en) 1973-07-09 1973-07-09 Variable magnification zoom lens

Publications (1)

Publication Number Publication Date
CA1008281A true CA1008281A (en) 1977-04-12

Family

ID=23489495

Family Applications (1)

Application Number Title Priority Date Filing Date
CA200,015A Expired CA1008281A (en) 1973-07-09 1974-05-15 Variable magnification zoom lens

Country Status (7)

Country Link
US (1) US3883228A (it)
JP (1) JPS5039563A (it)
CA (1) CA1008281A (it)
DE (1) DE2433147A1 (it)
FR (1) FR2237212A1 (it)
GB (1) GB1468846A (it)
IT (1) IT1016344B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5310425A (en) * 1976-07-16 1978-01-30 Minolta Camera Co Ltd Objective lens system free from deterioration due to aberration during close-up photography
CH621414A5 (it) * 1977-11-15 1981-01-30 Gretag Ag
JPS5813887B2 (ja) * 1979-06-20 1983-03-16 旭光学工業株式会社 複写変倍レンズ系
JPS5711333A (en) * 1980-06-24 1982-01-21 Canon Inc Slit scanning optical system with variable magnification function
JPS57201213A (en) * 1981-06-04 1982-12-09 Canon Inc Microminiature zoom lens
JPS5768810A (en) * 1980-10-18 1982-04-27 Asahi Optical Co Ltd Variable nagnification lens system for copying
JPS5768873A (en) * 1980-10-18 1982-04-27 Asahi Optical Co Ltd Variable scale factor copying optical device which is capable of magnification and reduction
JPS57111506A (en) * 1980-12-27 1982-07-12 Olympus Optical Co Ltd Lens system having short distance correcting function
JPS57189109A (en) * 1981-05-18 1982-11-20 Canon Inc Optical adjustment method for copyingmachine
JPS6057311A (ja) * 1983-09-08 1985-04-03 Asahi Optical Co Ltd 複写用変倍レンズ
US4832465A (en) * 1985-08-14 1989-05-23 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens for use in copying
GB8628333D0 (en) * 1985-11-28 1986-12-31 Asahi Optical Co Ltd Zoom lens system
DK75688A (da) * 1988-02-15 1989-08-16 Oce Helioprint As Reprografisk linsesystem og kamera omfattende dette
US5172275A (en) * 1990-12-14 1992-12-15 Eastman Kodak Company Apochromatic relay lens systems suitable for use in a high definition telecine apparatus
US6807016B2 (en) * 2000-09-22 2004-10-19 Pentax Corporation Lens barrel
JP4800805B2 (ja) * 2006-03-15 2011-10-26 オリンパスメディカルシステムズ株式会社 撮像装置
JP2009204752A (ja) * 2008-02-26 2009-09-10 Sanyo Electric Co Ltd 複合レンズ
CN102619014A (zh) * 2012-04-25 2012-08-01 常州市润源经编机械有限公司 经编机扩布装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436145A (en) * 1964-09-17 1969-04-01 Ednalite Corp Focusing lens pair combined with photocopying objective
JPS5713849B1 (it) * 1969-09-08 1982-03-19

Also Published As

Publication number Publication date
FR2237212A1 (it) 1975-02-07
JPS5039563A (it) 1975-04-11
US3883228A (en) 1975-05-13
IT1016344B (it) 1977-05-30
DE2433147A1 (de) 1975-01-30
GB1468846A (en) 1977-03-30

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