JPH0477291B2 - - Google Patents

Info

Publication number
JPH0477291B2
JPH0477291B2 JP57026637A JP2663782A JPH0477291B2 JP H0477291 B2 JPH0477291 B2 JP H0477291B2 JP 57026637 A JP57026637 A JP 57026637A JP 2663782 A JP2663782 A JP 2663782A JP H0477291 B2 JPH0477291 B2 JP H0477291B2
Authority
JP
Japan
Prior art keywords
focal length
lens group
focusing
focusing lens
equation
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
JP57026637A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58143312A (ja
Inventor
Sho Tokumaru
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.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP57026637A priority Critical patent/JPS58143312A/ja
Priority to US06/467,433 priority patent/US4636040A/en
Priority to DE19833305688 priority patent/DE3305688A1/de
Publication of JPS58143312A publication Critical patent/JPS58143312A/ja
Priority to US07/001,201 priority patent/US4844600A/en
Publication of JPH0477291B2 publication Critical patent/JPH0477291B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP57026637A 1982-02-19 1982-02-19 ズ−ムレンズ系 Granted JPS58143312A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP57026637A JPS58143312A (ja) 1982-02-19 1982-02-19 ズ−ムレンズ系
US06/467,433 US4636040A (en) 1982-02-19 1983-02-17 Zoom lens system
DE19833305688 DE3305688A1 (de) 1982-02-19 1983-02-18 Varioobjektiv
US07/001,201 US4844600A (en) 1982-02-19 1987-01-07 Zoom lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57026637A JPS58143312A (ja) 1982-02-19 1982-02-19 ズ−ムレンズ系

Publications (2)

Publication Number Publication Date
JPS58143312A JPS58143312A (ja) 1983-08-25
JPH0477291B2 true JPH0477291B2 (de) 1992-12-08

Family

ID=12198958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57026637A Granted JPS58143312A (ja) 1982-02-19 1982-02-19 ズ−ムレンズ系

Country Status (1)

Country Link
JP (1) JPS58143312A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055310A (ja) * 1983-09-06 1985-03-30 Asahi Optical Co Ltd 可変焦点距離レンズ光学系における焦点調節方法
JPH01105212A (ja) * 1986-10-24 1989-04-21 Asahi Optical Co Ltd 広角を包括する高変倍ズームレンズのマクロ方式
DE3943741C2 (de) * 1988-09-08 1996-02-22 Asahi Optical Co Ltd Varioobjektiv für eine Kamera
JP2629904B2 (ja) * 1988-11-18 1997-07-16 キヤノン株式会社 リヤーフォーカス式のズームレンズ
US5528427A (en) * 1991-10-30 1996-06-18 Canon Kabushiki Kaisha Zoom lens
US5663835A (en) * 1994-07-29 1997-09-02 Nikon Corporation Inner focus zoom lens

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120357A (de) * 1974-03-06 1975-09-20
JPS51134140A (en) * 1975-05-15 1976-11-20 Minolta Camera Co Ltd High-magnification zoom lens capable of macro photographing
JPS5266445A (en) * 1975-11-27 1977-06-01 Fuji Photo Optical Co Ltd Zoom lens
JPS5426754A (en) * 1977-07-30 1979-02-28 Asahi Optical Co Ltd Zoom lens having small distorted aberration
JPS54127321A (en) * 1978-03-25 1979-10-03 Canon Inc Zoom lens
JPS56162711A (en) * 1980-05-20 1981-12-14 Minolta Camera Co Ltd Zoom lens system
JPS5729024A (en) * 1980-07-28 1982-02-16 Minolta Camera Co Ltd Zoom lens system having lens group for focusing behind the system
JPS5891421A (ja) * 1981-11-26 1983-05-31 Canon Inc リヤ−フオ−カス方式のズ−ムレンズ
JPS58136012A (ja) * 1982-02-08 1983-08-12 Canon Inc ズ−ムレンズの合焦方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503957Y2 (de) * 1972-05-11 1975-02-01

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120357A (de) * 1974-03-06 1975-09-20
JPS51134140A (en) * 1975-05-15 1976-11-20 Minolta Camera Co Ltd High-magnification zoom lens capable of macro photographing
JPS5266445A (en) * 1975-11-27 1977-06-01 Fuji Photo Optical Co Ltd Zoom lens
JPS5426754A (en) * 1977-07-30 1979-02-28 Asahi Optical Co Ltd Zoom lens having small distorted aberration
JPS54127321A (en) * 1978-03-25 1979-10-03 Canon Inc Zoom lens
JPS56162711A (en) * 1980-05-20 1981-12-14 Minolta Camera Co Ltd Zoom lens system
JPS5729024A (en) * 1980-07-28 1982-02-16 Minolta Camera Co Ltd Zoom lens system having lens group for focusing behind the system
JPS5891421A (ja) * 1981-11-26 1983-05-31 Canon Inc リヤ−フオ−カス方式のズ−ムレンズ
JPS58136012A (ja) * 1982-02-08 1983-08-12 Canon Inc ズ−ムレンズの合焦方法

Also Published As

Publication number Publication date
JPS58143312A (ja) 1983-08-25

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