JPS4881545A - - Google Patents

Info

Publication number
JPS4881545A
JPS4881545A JP47011707A JP1170772A JPS4881545A JP S4881545 A JPS4881545 A JP S4881545A JP 47011707 A JP47011707 A JP 47011707A JP 1170772 A JP1170772 A JP 1170772A JP S4881545 A JPS4881545 A JP S4881545A
Authority
JP
Japan
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.)
Granted
Application number
JP47011707A
Other languages
Japanese (ja)
Other versions
JPS5112424B2 (en
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 filed Critical
Priority to JP47011707A priority Critical patent/JPS5112424B2/ja
Priority to GB437673A priority patent/GB1418731A/en
Priority to DE2304737A priority patent/DE2304737C2/en
Priority to FR7303426A priority patent/FR2170086B1/fr
Publication of JPS4881545A publication Critical patent/JPS4881545A/ja
Priority to US05/506,128 priority patent/US3972591A/en
Publication of JPS5112424B2 publication Critical patent/JPS5112424B2/ja
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G02B15/163—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 having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
    • G02B15/167—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 having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
    • G02B15/173—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 having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
    • 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
    • G02B15/144—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 four groups only
    • G02B15/1441—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 four groups only the first group being positive
    • G02B15/144105—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 four groups only the first group being positive arranged +-+-
    • 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
    • G02B15/144—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 four groups only
    • G02B15/1441—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 four groups only the first group being positive
    • G02B15/144113—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 four groups only the first group being positive arranged +-++
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
JP47011707A 1972-02-01 1972-02-01 Expired JPS5112424B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP47011707A JPS5112424B2 (en) 1972-02-01 1972-02-01
GB437673A GB1418731A (en) 1972-02-01 1973-01-29 Zoom lens systems
DE2304737A DE2304737C2 (en) 1972-02-01 1973-01-31 Mechanically compensated varifocal lens
FR7303426A FR2170086B1 (en) 1972-02-01 1973-01-31
US05/506,128 US3972591A (en) 1972-02-01 1974-09-16 Greatly variable magnification zoom lens system of large aperture ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47011707A JPS5112424B2 (en) 1972-02-01 1972-02-01

Publications (2)

Publication Number Publication Date
JPS4881545A true JPS4881545A (en) 1973-10-31
JPS5112424B2 JPS5112424B2 (en) 1976-04-19

Family

ID=11785503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47011707A Expired JPS5112424B2 (en) 1972-02-01 1972-02-01

Country Status (4)

Country Link
JP (1) JPS5112424B2 (en)
DE (1) DE2304737C2 (en)
FR (1) FR2170086B1 (en)
GB (1) GB1418731A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144652A (en) * 1975-06-06 1976-12-11 Canon Inc Built-in multiplying factor altering optical system
JPS52120850A (en) * 1976-04-02 1977-10-11 Elmo Co Ltd Zoom lens having high zoom ratio and large relative aperture
JPS54178720U (en) * 1978-06-06 1979-12-17
JP4517422B2 (en) * 1999-11-24 2010-08-04 株式会社ニコン Afocal zoom lens and microscope equipped with the lens
JP2013024965A (en) * 2011-07-19 2013-02-04 Fujifilm Corp Variable power optical system for projection and projection type display device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018204155B4 (en) 2018-03-19 2020-01-23 Carl Zeiss Ag Variable focal length lens and method for controlling the lens, and telescope and binoculars with such a lens

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547523A (en) * 1967-07-13 1970-12-15 Konishiroku Photo Ind Zoom objective lens system with highly reduced secondary chromatic aberration

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144652A (en) * 1975-06-06 1976-12-11 Canon Inc Built-in multiplying factor altering optical system
JPS52120850A (en) * 1976-04-02 1977-10-11 Elmo Co Ltd Zoom lens having high zoom ratio and large relative aperture
JPS5653731B2 (en) * 1976-04-02 1981-12-21
JPS54178720U (en) * 1978-06-06 1979-12-17
JPS5919590Y2 (en) * 1978-06-06 1984-06-06 日「鉄」溶接工業株式会社 Transport and sorting device for coated arc welding rods
JP4517422B2 (en) * 1999-11-24 2010-08-04 株式会社ニコン Afocal zoom lens and microscope equipped with the lens
JP2013024965A (en) * 2011-07-19 2013-02-04 Fujifilm Corp Variable power optical system for projection and projection type display device

Also Published As

Publication number Publication date
DE2304737C2 (en) 1982-08-26
JPS5112424B2 (en) 1976-04-19
GB1418731A (en) 1975-12-24
FR2170086B1 (en) 1975-10-31
FR2170086A1 (en) 1973-09-14
DE2304737A1 (en) 1973-08-16

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