JPH0434125B2 - - Google Patents

Info

Publication number
JPH0434125B2
JPH0434125B2 JP56086188A JP8618881A JPH0434125B2 JP H0434125 B2 JPH0434125 B2 JP H0434125B2 JP 56086188 A JP56086188 A JP 56086188A JP 8618881 A JP8618881 A JP 8618881A JP H0434125 B2 JPH0434125 B2 JP H0434125B2
Authority
JP
Japan
Prior art keywords
lens
negative
positive
lens group
zoom
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
JP56086188A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57201213A (en
Inventor
Kazuo Tanaka
Akira Tajima
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 JP56086188A priority Critical patent/JPS57201213A/ja
Publication of JPS57201213A publication Critical patent/JPS57201213A/ja
Priority to US06/699,026 priority patent/US4682860A/en
Publication of JPH0434125B2 publication Critical patent/JPH0434125B2/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
    • G02B15/142—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
    • G02B15/142—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
    • G02B15/1421—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 the first group being positive

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP56086188A 1980-03-14 1981-06-04 Microminiature zoom lens Granted JPS57201213A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56086188A JPS57201213A (en) 1981-06-04 1981-06-04 Microminiature zoom lens
US06/699,026 US4682860A (en) 1980-03-14 1985-02-07 Ultrasmall size zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56086188A JPS57201213A (en) 1981-06-04 1981-06-04 Microminiature zoom lens

Publications (2)

Publication Number Publication Date
JPS57201213A JPS57201213A (en) 1982-12-09
JPH0434125B2 true JPH0434125B2 (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) 1992-06-05

Family

ID=13879787

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56086188A Granted JPS57201213A (en) 1980-03-14 1981-06-04 Microminiature zoom lens

Country Status (1)

Country Link
JP (1) JPS57201213A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html)

Families Citing this family (51)

* 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
JPS6057814A (ja) * 1983-09-09 1985-04-03 Minolta Camera Co Ltd バックフォ−カスの短いコンパクトなズ−ムレンズ系
JPS60263113A (ja) * 1984-06-11 1985-12-26 Canon Inc 小型のズ−ムレンズ
JPH0642017B2 (ja) * 1984-07-02 1994-06-01 キヤノン株式会社 コンパクトなズ−ムレンズ
JPH0625825B2 (ja) * 1984-10-05 1994-04-06 キヤノン株式会社 小型のズ−ムレンズ
JPH0625824B2 (ja) * 1984-10-05 1994-04-06 キヤノン株式会社 小型のズ−ムレンズ
JPS61159612A (ja) * 1984-12-13 1986-07-19 Canon Inc 小型のズ−ムレンズ
GB8628333D0 (en) * 1985-11-28 1986-12-31 Asahi Optical Co Ltd Zoom lens system
JPH077147B2 (ja) * 1985-12-12 1995-01-30 キヤノン株式会社 小型のズ−ムレンズ
JP2628633B2 (ja) * 1986-04-25 1997-07-09 オリンパス光学工業株式会社 コンパクトなズームレンズ
JPH0820598B2 (ja) * 1986-06-03 1996-03-04 オリンパス光学工業株式会社 コンパクトなズ−ムレンズ
US4822152A (en) * 1986-08-11 1989-04-18 Olympus Optical Co., Ltd. Compact high-vari-focal ratio zoom lens system
JPH083580B2 (ja) * 1986-12-18 1996-01-17 オリンパス光学工業株式会社 コンパクトな高変倍率ズ−ムレンズ
JP2619632B2 (ja) * 1986-12-25 1997-06-11 オリンパス光学工業株式会社 コンパクトな高変倍率ズームレンズ
US4854682A (en) * 1987-11-13 1989-08-08 Olympus Optical Co., Ltd. Compact high vari-focal ratio zoom lens system
JPH01193807A (ja) * 1988-01-29 1989-08-03 Canon Inc 小型のズームレンズ
JPH01193808A (ja) * 1988-01-29 1989-08-03 Asahi Optical Co Ltd コンパクトカメラ用ズームレンズ
JP2798090B2 (ja) * 1988-02-10 1998-09-17 オリンパス光学工業株式会社 ズームレンズのフォーカシング方法
JP2817916B2 (ja) * 1988-03-25 1998-10-30 旭光学工業株式会社 高変倍比コンパクトカメラ用ズームレンズ
JPH026917A (ja) * 1988-04-15 1990-01-11 Konica Corp 小型の可変焦点距離レンズ
JP2586627B2 (ja) * 1989-01-20 1997-03-05 キヤノン株式会社 ２群ズームレンズ
JPH0250117A (ja) * 1988-05-31 1990-02-20 Olympus Optical Co Ltd ズームレンズ
JP2901066B2 (ja) * 1988-07-06 1999-06-02 オリンパス光学工業株式会社 ズームレンズ
DE3943741C2 (de) * 1988-09-08 1996-02-22 Asahi Optical Co Ltd Varioobjektiv für eine Kamera
US4978204A (en) * 1988-09-08 1990-12-18 Asahi Kogaku Kogyo Kabushik Kaisha High zoom-ratio zoom lens system for use in a compact camera
JP2581199B2 (ja) * 1988-10-31 1997-02-12 キヤノン株式会社 小型のズームレンズ
DE4042554C2 (de) * 1989-09-29 1996-12-19 Asahi Optical Co Ltd Varioobjektiv
JP2915934B2 (ja) * 1989-09-29 1999-07-05 旭光学工業株式会社 コンパクトカメラ用ズームレンズ
US5162947A (en) * 1989-10-19 1992-11-10 Asahi Kogaku Kogyo K.K. Zoom lens system for use with a compact camera having a wide coverage of angles
DE4033293A1 (de) * 1989-10-19 1991-04-25 Asahi Optical Co Ltd Zoomobjektivsystem fuer den einsatz an einer kompaktkamera mit einer weiten erfassung von winkeln
US5218478A (en) * 1989-11-17 1993-06-08 Canon Kabushiki Kaisha Small-sized zoom lens
GB2240637B (en) * 1989-11-21 1994-05-11 Asahi Optical Co Ltd Zoom lens system for use with a compact camera having a wide coverage of angles
DE4042542C2 (de) * 1989-11-21 2001-02-15 Asahi Optical Co Ltd Varioobjektiv für eine Kompaktkamera
JP2764445B2 (ja) * 1989-12-11 1998-06-11 コニカ株式会社 小型のズームレンズ
JP3248906B2 (ja) * 1990-11-30 2002-01-21 旭光学工業株式会社 ズームレンズ
JP3162113B2 (ja) * 1991-07-24 2001-04-25 オリンパス光学工業株式会社 小型で明るいズームレンズ
JP3029149B2 (ja) * 1991-09-02 2000-04-04 キヤノン株式会社 ズームレンズ
US5574523A (en) * 1991-10-23 1996-11-12 Canon Kabushiki Kaisha Camera capable of varying size of image plane
US5815320A (en) * 1993-01-14 1998-09-29 Canon Kabushiki Kaisha Zoom lens
JP3119403B2 (ja) * 1993-03-30 2000-12-18 キヤノン株式会社 小型な変倍レンズ
US5831772A (en) * 1993-04-07 1998-11-03 Canon Kabushiki Kaisha Compact zoom lens
JP3087550B2 (ja) * 1993-11-25 2000-09-11 キヤノン株式会社 小型のズームレンズ
JPH07306361A (ja) * 1994-05-11 1995-11-21 Canon Inc 小型のズームレンズ
JP3352237B2 (ja) * 1994-07-13 2002-12-03 キヤノン株式会社 小型のズームレンズ
JP3161246B2 (ja) * 1994-09-06 2001-04-25 キヤノン株式会社 カメラ
JP3402833B2 (ja) * 1995-03-02 2003-05-06 キヤノン株式会社 ズームレンズ
JP3416690B2 (ja) * 1995-05-10 2003-06-16 キヤノン株式会社 小型のズームレンズ
US6008953A (en) * 1996-07-26 1999-12-28 Canon Kabushiki Kaisha Zoom lens
US6215600B1 (en) 1997-09-30 2001-04-10 Canon Kabushiki Kaisha Zoom lens
JP2000199851A (ja) 1998-11-06 2000-07-18 Canon Inc ズ―ムレンズ
US6384986B1 (en) 1999-02-02 2002-05-07 Canon Kabushiki Kaisha Zoom lens and optical apparatus having the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838138A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) * 1972-09-11 1973-06-05
US3883228A (en) * 1973-07-09 1975-05-13 Minnesota Mining & Mfg Variable magnification zoom lens
JPS5427426A (en) * 1977-08-02 1979-03-01 Canon Inc Telephoto lens

Also Published As

Publication number Publication date
JPS57201213A (en) 1982-12-09

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