JPH043526B2 - - Google Patents

Info

Publication number
JPH043526B2
JPH043526B2 JP57097859A JP9785982A JPH043526B2 JP H043526 B2 JPH043526 B2 JP H043526B2 JP 57097859 A JP57097859 A JP 57097859A JP 9785982 A JP9785982 A JP 9785982A JP H043526 B2 JPH043526 B2 JP H043526B2
Authority
JP
Japan
Prior art keywords
lens
lens group
positive
negative
group
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 - Lifetime
Application number
JP57097859A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58215620A (ja
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 JP57097859A priority Critical patent/JPS58215620A/ja
Publication of JPS58215620A publication Critical patent/JPS58215620A/ja
Publication of JPH043526B2 publication Critical patent/JPH043526B2/ja
Granted 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
    • G02B15/143—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)
JP57097859A 1982-06-09 1982-06-09 小型な可変焦点距離レンズ系 Granted JPS58215620A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57097859A JPS58215620A (ja) 1982-06-09 1982-06-09 小型な可変焦点距離レンズ系

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57097859A JPS58215620A (ja) 1982-06-09 1982-06-09 小型な可変焦点距離レンズ系

Publications (2)

Publication Number Publication Date
JPS58215620A JPS58215620A (ja) 1983-12-15
JPH043526B2 true JPH043526B2 (en, 2012) 1992-01-23

Family

ID=14203471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57097859A Granted JPS58215620A (ja) 1982-06-09 1982-06-09 小型な可変焦点距離レンズ系

Country Status (1)

Country Link
JP (1) JPS58215620A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000071610A1 (fr) * 1999-05-24 2000-11-30 Hosokawa Micron Corporation Procede de formation d'un granule en resine thermoplastique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701033A (en) * 1983-09-09 1987-10-20 Minolta Camera Kabushiki Kaisha Variable focal length lens system
JPS6292909A (ja) * 1985-10-18 1987-04-28 Olympus Optical Co Ltd 可変焦点距離レンズ
JPH01128031A (ja) * 1987-11-13 1989-05-19 Olympus Optical Co Ltd 撮像光学系
US5327290A (en) * 1989-10-13 1994-07-05 Minolta Camera Kabushiki Kaisha Compact size zoom lens system
US5283693A (en) * 1990-06-13 1994-02-01 Minolta Camera Kabushiki Kaisha Compact zoom lens system
JP6393874B2 (ja) 2014-02-28 2018-09-26 カンタツ株式会社 撮像レンズ
JP2022163876A (ja) * 2021-04-15 2022-10-27 キヤノン株式会社 光学系及びそれを有する撮像装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT334109B (de) * 1974-12-20 1976-12-27 Eumig Pankratisches objektiv

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000071610A1 (fr) * 1999-05-24 2000-11-30 Hosokawa Micron Corporation Procede de formation d'un granule en resine thermoplastique

Also Published As

Publication number Publication date
JPS58215620A (ja) 1983-12-15

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