JPH0314323B2 - - Google Patents

Info

Publication number
JPH0314323B2
JPH0314323B2 JP59044448A JP4444884A JPH0314323B2 JP H0314323 B2 JPH0314323 B2 JP H0314323B2 JP 59044448 A JP59044448 A JP 59044448A JP 4444884 A JP4444884 A JP 4444884A JP H0314323 B2 JPH0314323 B2 JP H0314323B2
Authority
JP
Japan
Prior art keywords
lens
positive
negative
lens group
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
JP59044448A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60188917A (ja
Inventor
Masakazu Yamagata
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP59044448A priority Critical patent/JPS60188917A/ja
Priority to US06/709,104 priority patent/US4653876A/en
Publication of JPS60188917A publication Critical patent/JPS60188917A/ja
Publication of JPH0314323B2 publication Critical patent/JPH0314323B2/ja
Granted 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP59044448A 1984-03-07 1984-03-07 近距離撮影用レンズ系 Granted JPS60188917A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59044448A JPS60188917A (ja) 1984-03-07 1984-03-07 近距離撮影用レンズ系
US06/709,104 US4653876A (en) 1984-03-07 1985-03-07 Close-up lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59044448A JPS60188917A (ja) 1984-03-07 1984-03-07 近距離撮影用レンズ系

Publications (2)

Publication Number Publication Date
JPS60188917A JPS60188917A (ja) 1985-09-26
JPH0314323B2 true JPH0314323B2 (en]) 1991-02-26

Family

ID=12691768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59044448A Granted JPS60188917A (ja) 1984-03-07 1984-03-07 近距離撮影用レンズ系

Country Status (2)

Country Link
US (1) US4653876A (en])
JP (1) JPS60188917A (en])

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2811447B2 (ja) * 1988-06-17 1998-10-15 株式会社シグマ マクロレンズ
JPH06308383A (ja) * 1993-04-23 1994-11-04 Nikon Corp 水中カメラ用中望遠レンズ
US5546232A (en) * 1993-06-14 1996-08-13 Asahi Kogaku Kogyo Kabushiki Kaisha Two-group zoom lens
US6325972B1 (en) * 1998-12-30 2001-12-04 Ethicon, Inc. Apparatus and process for concentrating a liquid sterilant and sterilizing articles therewith
JP3750123B2 (ja) * 1996-04-25 2006-03-01 株式会社ニコン 投影光学系
EA007360B1 (ru) * 2004-11-11 2006-10-27 Научно-Производственное Республиканское Унитарное Предприятие "Лэмт" Светосильный объектив
JP5994561B2 (ja) * 2012-10-16 2016-09-21 株式会社リコー 撮影レンズ、撮影レンズユニット及び撮像装置及び携帯情報端末装置
JP6405821B2 (ja) * 2014-09-17 2018-10-17 株式会社リコー 結像レンズおよび撮像装置
US9772469B2 (en) * 2014-09-17 2017-09-26 Ricoh Company, Ltd. Image forming lens and image capturing device
JP6374077B1 (ja) * 2017-10-19 2018-08-15 エーエーシー テクノロジーズ ピーティーイー リミテッドAac Technologies Pte.Ltd. 撮像光学レンズ
JP7218127B2 (ja) * 2018-08-31 2023-02-06 キヤノン株式会社 レンズ装置およびカメラシステム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784285A (en) * 1972-06-01 1974-01-08 Ponder & Best Zoom lens
US4307943A (en) * 1978-09-11 1981-12-29 Vivitar Corporation Close focusing zoom lens
JPS56107210A (en) * 1980-01-31 1981-08-26 Nippon Kogaku Kk <Nikon> Lens system permitting short-distance photographing
JPS5834418A (ja) * 1981-08-25 1983-02-28 Nippon Kogaku Kk <Nikon> 近距離撮影可能なレンズ系

Also Published As

Publication number Publication date
JPS60188917A (ja) 1985-09-26
US4653876A (en) 1987-03-31

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees