DE19734921B4 - Variolinsensystem mit hohem Brennweitenverhältnis - Google Patents

Variolinsensystem mit hohem Brennweitenverhältnis Download PDF

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Publication number
DE19734921B4
DE19734921B4 DE19734921A DE19734921A DE19734921B4 DE 19734921 B4 DE19734921 B4 DE 19734921B4 DE 19734921 A DE19734921 A DE 19734921A DE 19734921 A DE19734921 A DE 19734921A DE 19734921 B4 DE19734921 B4 DE 19734921B4
Authority
DE
Germany
Prior art keywords
lens group
focal length
lens
setting
refractive power
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 - Fee Related
Application number
DE19734921A
Other languages
German (de)
English (en)
Other versions
DE19734921A1 (de
Inventor
Takashi Enomoto
Takayuki Ito
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.)
Ricoh Imaging Co Ltd
Original Assignee
Pentax Corp
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 Pentax Corp filed Critical Pentax Corp
Publication of DE19734921A1 publication Critical patent/DE19734921A1/de
Application granted granted Critical
Publication of DE19734921B4 publication Critical patent/DE19734921B4/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G02B15/16—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 +--

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
DE19734921A 1996-08-12 1997-08-12 Variolinsensystem mit hohem Brennweitenverhältnis Expired - Fee Related DE19734921B4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21265296A JP3723643B2 (ja) 1996-08-12 1996-08-12 高変倍ズームレンズ系
JP8-212652 1996-08-12

Publications (2)

Publication Number Publication Date
DE19734921A1 DE19734921A1 (de) 1998-02-19
DE19734921B4 true DE19734921B4 (de) 2006-07-13

Family

ID=16626178

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19734921A Expired - Fee Related DE19734921B4 (de) 1996-08-12 1997-08-12 Variolinsensystem mit hohem Brennweitenverhältnis

Country Status (5)

Country Link
US (1) US5815322A (enExample)
JP (1) JP3723643B2 (enExample)
CA (1) CA2212687C (enExample)
DE (1) DE19734921B4 (enExample)
GB (1) GB2316500B (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103336354B (zh) * 2013-07-03 2015-06-17 福建福光数码科技有限公司 小型化、强光力、大倍比手动三可变摄像镜头
JP6270104B2 (ja) * 2013-08-28 2018-01-31 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
US9459434B2 (en) 2013-08-28 2016-10-04 Ricoh Company, Ltd. Zoom lens and imaging apparatus
JP6283986B2 (ja) * 2013-08-30 2018-02-28 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
JP6252103B2 (ja) * 2013-10-25 2017-12-27 株式会社リコー ズームレンズ及びこのズームレンズを用いた撮像装置
US9470881B2 (en) 2013-10-25 2016-10-18 Ricoh Company, Ltd. Zoom lens and imaging device using zoom lens
JP6307834B2 (ja) * 2013-10-25 2018-04-11 株式会社リコー ズームレンズ及びこのズームレンズを用いた撮像装置
JP6354196B2 (ja) * 2014-02-19 2018-07-11 株式会社リコー ズームレンズおよびこのズームレンズを用いた撮像装置
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
CN105676434B (zh) * 2016-04-27 2018-08-21 佛山华国光学器材有限公司 一种透雾60x大变倍光学系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164937A1 (de) * 1971-12-28 1973-07-05 Schneider Co Optische Werke Lichtstarkes objektiv mit veraenderbarer brennweite

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL90813C (enExample) * 1950-07-18
GB941754A (en) * 1961-12-20 1963-11-13 Isco Optische Werke Gmbh Optical objectives
GB1064323A (en) * 1962-09-14 1967-04-05 Rank Precision Ind Ltd Improvements in or relating to optical objectives of variable equivalent focal length
GB1066501A (en) * 1962-10-04 1967-04-26 Rank Precision Ind Ltd Improvements in or relating to optical objectives of variable equivalent focal length
GB1109913A (en) * 1965-07-26 1968-04-18 Rank Organisation Ltd Improvements in or relating to optical objectives of variable equivalent focal length
DE1497590C3 (de) * 1966-04-05 1974-10-17 Jos. Schneider & Co, Optische Werke, 6550 Bad Kreuznach Lichtstarkes Objektiv mit veränderbarer Brennweite
GB1190873A (en) * 1967-06-30 1970-05-06 Schneider Co Optische Werke Improvements relating to Zoom Lenses
DE2032573A1 (de) * 1970-07-01 1972-01-05 Jos. Schneider & Co, Optische Werke, 6550 Bad Kreuznach Lichtstarkes Objektiv mit veränderbarer Brennweite
DD106718A5 (enExample) * 1972-09-14 1974-06-20
JPS53979Y2 (enExample) * 1973-04-13 1978-01-12
JPS512439A (en) * 1974-06-17 1976-01-10 Canon Kk Makurozuumurenzukei
US4080047A (en) * 1975-04-03 1978-03-21 Minolta Camera Kabushiki Kaisha Lens system capable of wide range zooming and macrophotography
JPS57135912A (en) * 1981-02-16 1982-08-21 Asahi Optical Co Ltd Zoom lens
JPS58108511A (ja) * 1981-12-22 1983-06-28 Asahi Optical Co Ltd ビデオカメラ用ズ−ムレンズ
US5221995A (en) * 1989-08-12 1993-06-22 Asahi Kogaku Kogyo K.K. Zoom lens system
US5189557A (en) * 1990-11-20 1993-02-23 Canon Kabushiki Kaisha High variable magnification range zoom lens
JP3174357B2 (ja) * 1991-08-23 2001-06-11 旭光学工業株式会社 ズームレンズ
JP3167069B2 (ja) * 1993-11-30 2001-05-14 キヤノン株式会社 ズームレンズ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164937A1 (de) * 1971-12-28 1973-07-05 Schneider Co Optische Werke Lichtstarkes objektiv mit veraenderbarer brennweite

Also Published As

Publication number Publication date
CA2212687A1 (en) 1998-02-12
JP3723643B2 (ja) 2005-12-07
CA2212687C (en) 2001-10-02
GB2316500B (en) 2000-10-11
JPH1054937A (ja) 1998-02-24
DE19734921A1 (de) 1998-02-19
GB2316500A (en) 1998-02-25
US5815322A (en) 1998-09-29
GB9717137D0 (en) 1997-10-22

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: PENTAX CORP., TOKIO/TOKYO, JP

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HOYA CORP., TOKIO/TOKYO, JP

R082 Change of representative

Representative=s name: SCHAUMBURG, THOENES, THURN, LANDSKRON, ECKERT, DE

R081 Change of applicant/patentee

Owner name: PENTAX RICOH IMAGING COMPANY, LTD., JP

Free format text: FORMER OWNER: HOYA CORP., TOKYO, JP

Effective date: 20120529

R082 Change of representative

Representative=s name: SCHAUMBURG UND PARTNER PATENTANWAELTE MBB, DE

Effective date: 20120529

Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE MBB, DE

Effective date: 20120529

Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE GBR, DE

Effective date: 20120529

Representative=s name: PATENTANWAELTE SCHAUMBURG, THOENES, THURN, LAN, DE

Effective date: 20120529

R082 Change of representative

Representative=s name: SCHAUMBURG UND PARTNER PATENTANWAELTE MBB, DE

Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE MBB, DE

Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE GBR, DE

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee