JPH0319527B2 - - Google Patents

Info

Publication number
JPH0319527B2
JPH0319527B2 JP60125994A JP12599485A JPH0319527B2 JP H0319527 B2 JPH0319527 B2 JP H0319527B2 JP 60125994 A JP60125994 A JP 60125994A JP 12599485 A JP12599485 A JP 12599485A JP H0319527 B2 JPH0319527 B2 JP H0319527B2
Authority
JP
Japan
Prior art keywords
lens group
lens
positive
negative
average value
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
JP60125994A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61284721A (ja
Inventor
Isao Kawaguchi
Masakuni Tai
Shin Ikeda
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.)
Tokina Optical Co Ltd
Original Assignee
Tokina Optical 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 Tokina Optical Co Ltd filed Critical Tokina Optical Co Ltd
Priority to JP60125994A priority Critical patent/JPS61284721A/ja
Priority to US06/821,445 priority patent/US4729643A/en
Publication of JPS61284721A publication Critical patent/JPS61284721A/ja
Publication of JPH0319527B2 publication Critical patent/JPH0319527B2/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)
JP60125994A 1985-06-12 1985-06-12 望遠ズ−ムレンズ Granted JPS61284721A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP60125994A JPS61284721A (ja) 1985-06-12 1985-06-12 望遠ズ−ムレンズ
US06/821,445 US4729643A (en) 1985-06-12 1986-01-22 Telephoto zoom lens system for camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60125994A JPS61284721A (ja) 1985-06-12 1985-06-12 望遠ズ−ムレンズ

Publications (2)

Publication Number Publication Date
JPS61284721A JPS61284721A (ja) 1986-12-15
JPH0319527B2 true JPH0319527B2 (en, 2012) 1991-03-15

Family

ID=14924087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60125994A Granted JPS61284721A (ja) 1985-06-12 1985-06-12 望遠ズ−ムレンズ

Country Status (2)

Country Link
US (1) US4729643A (en, 2012)
JP (1) JPS61284721A (en, 2012)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH071335B2 (ja) * 1985-05-31 1995-01-11 オリンパス光学工業株式会社 望遠ズ−ムレンズ
US4840469A (en) * 1986-11-06 1989-06-20 Nikon Corporation Telephoto zoom lens
JPH0820601B2 (ja) * 1986-11-06 1996-03-04 株式会社ニコン 望遠ズ−ムレンズ
US4952038A (en) * 1988-04-08 1990-08-28 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system for use in compact camera
JP2691563B2 (ja) * 1988-06-08 1997-12-17 旭光学工業株式会社 望遠ズームレンズ
JPH0854561A (ja) * 1994-08-09 1996-02-27 Fuji Photo Optical Co Ltd 視野角可変内視鏡用対物レンズ
JP2000347102A (ja) * 1999-06-04 2000-12-15 Konica Corp ズームレンズ
JP4915992B2 (ja) * 2006-09-12 2012-04-11 オリンパスイメージング株式会社 ズームレンズ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5832684B2 (ja) * 1977-07-30 1983-07-14 旭光学工業株式会社 高変倍率を有する広角ズ−ムレンズ系
JPS55156912A (en) * 1979-05-16 1980-12-06 Asahi Optical Co Ltd High variable power zoom lens including wide angle
JPS6036568B2 (ja) * 1979-07-16 1985-08-21 旭光学工業株式会社 写真用高倍ズ−ムレンズ
JPS5740220A (en) * 1980-08-22 1982-03-05 Nippon Kogaku Kk <Nikon> Zoom lens composed of 3 groups
JPS5937518A (ja) * 1982-08-25 1984-03-01 Asahi Optical Co Ltd 広角を包括する高変倍比ズ−ムレンズ
JPS60225110A (ja) * 1984-04-23 1985-11-09 Sigma:Kk 望遠ズ−ムレンズ

Also Published As

Publication number Publication date
JPS61284721A (ja) 1986-12-15
US4729643A (en) 1988-03-08

Similar Documents

Publication Publication Date Title
JP3363571B2 (ja) リヤフォーカス式のズームレンズと撮像系
JPH0354324B2 (en, 2012)
US4394071A (en) Lens system with fill-in lens
JPH09325274A (ja) ズ−ムレンズ
JPH05157965A (ja) 広角レンズ
JP3074026B2 (ja) 超広角型のズームレンズ
JPH0784180A (ja) 水中用魚眼レンズ
JPH06201988A (ja) 大口径比内焦望遠レンズ
JPH06235858A (ja) 高性能撮影レンズ
JP3254239B2 (ja) 大口径中望遠レンズ
US20020041452A1 (en) Telephoto lens system
JPH10253885A (ja) 広角ズームレンズ系
JPS61148414A (ja) コンパクトなズ−ムレンズ
JPH0642017B2 (ja) コンパクトなズ−ムレンズ
JP3735909B2 (ja) レトロフォーカス型レンズ
JP3184581B2 (ja) ズームレンズ
JP3236037B2 (ja) 高変倍ズームレンズ
JPH04362909A (ja) 防振補正光学系を備えたズームレンズ
JPH0319527B2 (en, 2012)
JP2546293B2 (ja) 小型のズームレンズ
JP3268824B2 (ja) 小型の２群ズームレンズ
US5936780A (en) Projection zoom lens having a long back focal length
JP2533779B2 (ja) 変倍レンズ
JP2556046B2 (ja) コンパクトズ−ムレンズ
JPH0651199A (ja) リヤーフォーカス式ズームレンズ

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees