DE2546930A1 - Objektiv mit veraenderbarer brennweite - Google Patents

Objektiv mit veraenderbarer brennweite

Info

Publication number
DE2546930A1
DE2546930A1 DE19752546930 DE2546930A DE2546930A1 DE 2546930 A1 DE2546930 A1 DE 2546930A1 DE 19752546930 DE19752546930 DE 19752546930 DE 2546930 A DE2546930 A DE 2546930A DE 2546930 A1 DE2546930 A1 DE 2546930A1
Authority
DE
Germany
Prior art keywords
lens
optical member
aspherical
lens element
positive
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
DE19752546930
Other languages
German (de)
English (en)
Inventor
Paul Lewis Ruben
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of DE2546930A1 publication Critical patent/DE2546930A1/de
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
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • 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
    • G02B15/143—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 three groups only
    • G02B15/1431—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 three groups only the first group being positive
    • G02B15/143105—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 three groups only the first group being positive arranged +-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
DE19752546930 1974-10-18 1975-10-20 Objektiv mit veraenderbarer brennweite Pending DE2546930A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/516,239 US3972592A (en) 1974-10-18 1974-10-18 Zoom projection lens

Publications (1)

Publication Number Publication Date
DE2546930A1 true DE2546930A1 (de) 1976-04-29

Family

ID=24054718

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752546930 Pending DE2546930A1 (de) 1974-10-18 1975-10-20 Objektiv mit veraenderbarer brennweite

Country Status (3)

Country Link
US (1) US3972592A (enExample)
DE (1) DE2546930A1 (enExample)
FR (1) FR2288322A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726355A1 (de) * 1986-09-23 1989-07-20 Trt Telecom Radio Electr Bifokales optisches infrarotsystem

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297007A (en) * 1979-04-24 1981-10-27 Polaroid Corporation Optical apparatus and method for changing a zoom camera to a fixed focus camera
FR2466785A1 (fr) * 1979-09-28 1981-04-10 Philips Nv Objectif a focale variable suivant de grands rapports comportant des surfaces aspheriques
JPS56147113A (en) * 1980-04-18 1981-11-14 Canon Inc Zoom lens
JPS57176015A (en) * 1981-04-22 1982-10-29 Nippon Kogaku Kk <Nikon> Zoom lens system
JPS5865407A (ja) * 1981-10-15 1983-04-19 Nippon Kogaku Kk <Nikon> ズ−ムレンズ系
US4653872A (en) * 1981-04-22 1987-03-31 Nippon Kogaku K. K. Athermalized zoom lens system
JPH0617938B2 (ja) * 1982-08-16 1994-03-09 オリンパス光学工業株式会社 ズームレンズ
JPS5979212A (ja) * 1982-10-29 1984-05-08 Canon Inc 合成樹脂材料を用いたズ−ムレンズ
JPH06100722B2 (ja) * 1986-02-27 1994-12-12 オリンパス光学工業株式会社 可変焦点距離レンズ
US4984876A (en) * 1987-09-16 1991-01-15 Minolta Camera Kabushiki Kaisha Zoom lens system
JP2558138B2 (ja) * 1988-02-08 1996-11-27 オリンパス光学工業株式会社 変倍レンズ
JPH01315710A (ja) * 1988-06-16 1989-12-20 Olympus Optical Co Ltd ズームレンズ
JP3262374B2 (ja) * 1992-07-08 2002-03-04 キヤノン株式会社 ズームレンズ
JP3330660B2 (ja) * 1992-07-20 2002-09-30 株式会社リコー 変倍ファインダー
DE19942281A1 (de) * 1999-05-14 2000-11-16 Zeiss Carl Fa Projektionsobjektiv
TWI574040B (zh) 2016-04-15 2017-03-11 大立光電股份有限公司 光學成像系統組、取像裝置及電子裝置
TWI637212B (zh) 2017-10-27 2018-10-01 大立光電股份有限公司 光學成像鏡頭、取像裝置及電子裝置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240508A (en) * 1924-05-06 1925-10-06 Arthur Warmisham Improved lens systems
US2377268A (en) * 1939-10-10 1945-05-29 Rinia Herre Optical system
DE898361C (de) * 1940-12-06 1953-11-30 Zeiss Carl Fa Photographisches Objektiv
US2530397A (en) * 1948-02-18 1950-11-21 Ancillary Henry L Beigel Anastigmatic lens
US2649025A (en) * 1950-09-22 1953-08-18 Taylor Taylor & Hobson Ltd Optical objective of variable focal length
US3220307A (en) * 1960-12-05 1965-11-30 James E Thurow Variable focal length lens system having linear differential motion between lens unit
US3194139A (en) * 1962-03-05 1965-07-13 Eastman Kodak Co Zoom camera system
US3330615A (en) * 1963-05-06 1967-07-11 Eastman Kodak Co Zoom lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726355A1 (de) * 1986-09-23 1989-07-20 Trt Telecom Radio Electr Bifokales optisches infrarotsystem

Also Published As

Publication number Publication date
US3972592A (en) 1976-08-03
FR2288322A1 (fr) 1976-05-14
FR2288322B1 (enExample) 1979-04-27

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Legal Events

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