NL1003871A1 - Zoomlensstelsel met grote zoomverhouding. - Google Patents

Zoomlensstelsel met grote zoomverhouding.

Info

Publication number
NL1003871A1
NL1003871A1 NL1003871A NL1003871A NL1003871A1 NL 1003871 A1 NL1003871 A1 NL 1003871A1 NL 1003871 A NL1003871 A NL 1003871A NL 1003871 A NL1003871 A NL 1003871A NL 1003871 A1 NL1003871 A1 NL 1003871A1
Authority
NL
Netherlands
Prior art keywords
zoom
lens system
ratio
zoom lens
zoom ratio
Prior art date
Application number
NL1003871A
Other languages
English (en)
Other versions
NL1003871C2 (nl
Inventor
Tetsuya Abe
Takayuki Ito
Takashi Enomoto
Original Assignee
Asahi 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 Asahi Optical Co Ltd filed Critical Asahi Optical Co Ltd
Publication of NL1003871A1 publication Critical patent/NL1003871A1/nl
Application granted granted Critical
Publication of NL1003871C2 publication Critical patent/NL1003871C2/nl

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
    • G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/163—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
    • G02B15/167—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
    • G02B15/17—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +--
    • 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
    • G02B15/144—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 four groups only
    • G02B15/1441—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 four groups only the first group being positive
    • G02B15/144109—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 four groups only the first group being positive arranged +--+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
NL1003871A 1995-08-25 1996-08-23 Zoomlensstelsel met grote zoomverhouding. NL1003871C2 (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21773095A JP3360779B2 (ja) 1995-08-25 1995-08-25 高変倍ズームレンズ系
JP21773095 1995-08-25

Publications (2)

Publication Number Publication Date
NL1003871A1 true NL1003871A1 (nl) 1997-03-03
NL1003871C2 NL1003871C2 (nl) 1998-12-08

Family

ID=16708851

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1003871A NL1003871C2 (nl) 1995-08-25 1996-08-23 Zoomlensstelsel met grote zoomverhouding.

Country Status (4)

Country Link
US (1) US5706138A (nl)
JP (1) JP3360779B2 (nl)
GB (1) GB2304926A (nl)
NL (1) NL1003871C2 (nl)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6055114A (en) * 1997-06-18 2000-04-25 Nikon Corporation Zoom lens optical system
JP2000249918A (ja) * 1999-02-26 2000-09-14 Fuji Photo Optical Co Ltd ズームレンズ
KR100567577B1 (ko) * 1999-03-15 2006-04-05 삼성테크윈 주식회사 광각 접사 고변배 렌즈계
JP2004264449A (ja) * 2003-02-28 2004-09-24 Fuji Photo Optical Co Ltd 高倍率４群ズームレンズ
JP2010175956A (ja) * 2009-01-30 2010-08-12 Panasonic Corp ズームレンズ系、交換レンズ装置、及びカメラシステム
CN103424852B (zh) * 2013-08-22 2015-07-22 福建福光数码科技有限公司 高倍率高清电动两可变摄像镜头
JP6331124B2 (ja) 2014-03-11 2018-05-30 株式会社リコー ズームレンズ、撮像装置および監視用ビデオカメラ
JP6308425B2 (ja) 2014-03-12 2018-04-11 株式会社リコー ズームレンズおよびカメラ
CN104777597B (zh) * 2015-04-14 2017-06-20 福建福特科光电股份有限公司 适用于4k摄像机的高清变焦距监控摄像镜头

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135912A (en) * 1981-02-16 1982-08-21 Asahi Optical Co Ltd Zoom lens
JPS57158610A (en) * 1981-03-25 1982-09-30 Nippon Kogaku Kk <Nikon> Zoom lens system capable of close-up shooting
JPS58108511A (ja) * 1981-12-22 1983-06-28 Asahi Optical Co Ltd ビデオカメラ用ズ−ムレンズ
JPS58145910A (ja) * 1982-02-25 1983-08-31 Canon Inc ズ−ムレンズ
US4525036A (en) * 1982-03-08 1985-06-25 Tokyo Shibaura Denki Kabushiki Kaisha Zoom lens
US4591244A (en) * 1982-06-07 1986-05-27 Nippon Kogaku K. K. Zoom lens
JPS5971015A (ja) * 1982-10-15 1984-04-21 Canon Inc ズ−ムレンズ
JPS6011813A (ja) * 1983-06-30 1985-01-22 Nippon Kogaku Kk <Nikon> ズ−ムレンズ
JPS60186818A (ja) * 1984-03-07 1985-09-24 Olympus Optical Co Ltd ズ−ムレンズ
JPH0668574B2 (ja) * 1984-06-27 1994-08-31 オリンパス光学工業株式会社 大口径変倍レンズ系
JPS6139016A (ja) * 1984-07-31 1986-02-25 Ricoh Co Ltd コンパクトなズ−ムレンズ
US4824226A (en) * 1986-08-12 1989-04-25 Minolta Camera Kabushiki Kaisha Compact zoom lens system for video camera
JPS63191113A (ja) * 1986-10-15 1988-08-08 Canon Inc ズ−ムレンズ
US4846563A (en) * 1987-02-18 1989-07-11 Canon Kabushiki Kaisha Compact zoom lens of large aperture ratio
US4812024A (en) * 1987-05-11 1989-03-14 Canon Kabushiki Kaisha Zoom lens
JPH02136810A (ja) * 1988-11-18 1990-05-25 Olympus Optical Co Ltd ズームレンズ
JPH02232613A (ja) * 1989-03-07 1990-09-14 Konica Corp コンパクトなズームレンズ
JP2597510B2 (ja) * 1989-03-15 1997-04-09 オリンパス光学工業株式会社 可変焦点距離レンズ
US4948239A (en) * 1989-06-19 1990-08-14 Eastman Kodak Company Zoom lens
US5221995A (en) * 1989-08-12 1993-06-22 Asahi Kogaku Kogyo K.K. Zoom lens system
JPH03145615A (ja) * 1989-10-31 1991-06-20 Canon Inc ズームレンズ
JPH03181909A (ja) * 1989-12-11 1991-08-07 Canon Inc ズームレンズ
JPH0460605A (ja) * 1990-06-29 1992-02-26 Canon Inc ズームレンズ
JP3088112B2 (ja) * 1990-10-12 2000-09-18 旭光学工業株式会社 ズームレンズ
US5371630A (en) * 1991-07-23 1994-12-06 Asahi Kogaku Kabushiki Kaisha Zoom lens system
JP3174357B2 (ja) * 1991-08-23 2001-06-11 旭光学工業株式会社 ズームレンズ
US5557472A (en) * 1993-06-16 1996-09-17 Asahi Kogaku Kogyo Kabushiki Kaisha Fast aspherical lens system
US5513045A (en) * 1993-06-16 1996-04-30 Asahi Kogaku Kogyo Kabushiki Kaisha Fast aspherical lens system
JPH0763989A (ja) * 1993-06-16 1995-03-10 Asahi Optical Co Ltd 大口径非球面レンズ系
JP3397447B2 (ja) * 1993-06-18 2003-04-14 ペンタックス株式会社 大口径超広角レンズ系

Also Published As

Publication number Publication date
GB2304926A (en) 1997-03-26
US5706138A (en) 1998-01-06
GB9617620D0 (en) 1996-10-02
GB2304926A8 (en) 1997-04-01
NL1003871C2 (nl) 1998-12-08
JPH0961715A (ja) 1997-03-07
JP3360779B2 (ja) 2002-12-24

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Legal Events

Date Code Title Description
AD1A A request for search or an international type search has been filed
RD2N Patents in respect of which a decision has been taken or a report has been made (novelty report)

Effective date: 19981006

PD2B A search report has been drawn up
VD1 Lapsed due to non-payment of the annual fee

Effective date: 20060301