FR1552473A - - Google Patents

Info

Publication number
FR1552473A
FR1552473A FR1552473DA FR1552473A FR 1552473 A FR1552473 A FR 1552473A FR 1552473D A FR1552473D A FR 1552473DA FR 1552473 A FR1552473 A FR 1552473A
Authority
FR
France
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
Application number
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 filed Critical
Application granted granted Critical
Publication of FR1552473A publication Critical patent/FR1552473A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/14—Viewfinders
    • 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
    • G02B15/1445—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 negative
    • G02B15/144515—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 negative 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
    • G02B15/145—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 five groups only
    • G02B15/1455—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 five groups only the first group being negative
    • G02B15/145531—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 five groups only the first group being negative arranged -++++

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Viewfinders (AREA)
  • Lenses (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
FR1552473D 1967-01-24 1968-01-24 Expired FR1552473A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61139867A 1967-01-24 1967-01-24

Publications (1)

Publication Number Publication Date
FR1552473A true FR1552473A (fr) 1969-01-03

Family

ID=24448866

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1552473D Expired FR1552473A (fr) 1967-01-24 1968-01-24

Country Status (4)

Country Link
US (1) US3438689A (fr)
DE (1) DE1984790U (fr)
FR (1) FR1552473A (fr)
GB (1) GB1209082A (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549250A (en) * 1968-04-29 1970-12-22 Axel Pantenburg Slide projector with continuously variable detail magnification
US3631786A (en) * 1970-07-23 1972-01-04 Eastman Kodak Co Adjusting mechanism for zoom lens system
US3890036A (en) * 1974-02-28 1975-06-17 Berkey Photo Inc Zoom lens system
US3947084A (en) * 1975-02-28 1976-03-30 Hughes Aircraft Company Long-wave infrared afocal zoom telescope
US4600277A (en) * 1984-02-13 1986-07-15 Murray Jr Joseph E Telescope with multiple image-viewing assemblies
US4906078A (en) * 1987-08-12 1990-03-06 Olympus Optical Co., Ltd. Variable magnification viewfinder
JP2699394B2 (ja) * 1988-04-07 1998-01-19 ミノルタ株式会社 変倍ファインダー光学系
US5194886A (en) * 1990-04-03 1993-03-16 Minolta Camera Kabushiki Kaisha Finder optical system
US5257129A (en) * 1991-01-22 1993-10-26 Olympus Optical Co., Ltd. Real image type variable magnification viewfinder optical system
US5687023A (en) * 1993-02-19 1997-11-11 Nikon Corporation Keplerian zoom finder optical system
US5463500A (en) * 1993-08-31 1995-10-31 Orascoptic Research, Inc. Light-weight three-element clinical viewer
CA2123077C (fr) * 1994-04-14 2001-09-04 Anthony B. Greening Systeme d'imagerie stereoscopique a objectif unique
JP3563800B2 (ja) * 1995-01-09 2004-09-08 オリンパス株式会社 観察光学装置
US6799847B2 (en) 1999-12-16 2004-10-05 Kerr Corporation Sliding bridge eyeglass frame
US6850872B1 (en) * 2000-08-30 2005-02-01 Microsoft Corporation Facial image processing methods and systems
US7097392B2 (en) * 2003-06-04 2006-08-29 Stecher Proprietary Interests Free-flowing sulfur transport, storage and use to produce energy, fertilizer or hydrogen without carbon dioxide
DE102005063245A1 (de) 2005-12-21 2007-07-05 Carl Zeiss Sports Optics Gmbh Fernrohr mit variabler Vergrößerung
JP6036549B2 (ja) * 2013-05-23 2016-11-30 ソニー株式会社 接眼レンズおよび表示装置
TWI600940B (zh) 2017-03-01 2017-10-01 大立光電股份有限公司 光學影像透鏡系統組、取像裝置及電子裝置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454696A (en) * 1944-12-06 1948-11-23 United Aircraft Corp Engine cooling means
US2578574A (en) * 1948-05-12 1951-12-11 Croix Optical Company Optical system for variable power galilean telescopes
US2859654A (en) * 1953-12-02 1958-11-11 Frank G Back Varifocal viewfinders
US2945415A (en) * 1955-12-06 1960-07-19 Ednalite Optical Company Inc View finder for zoom lens
US3051052A (en) * 1959-08-31 1962-08-28 Bergstein Leonard Varifocal lens system with four points of exact image shift compensation
US3043181A (en) * 1959-11-25 1962-07-10 Eastman Kodak Co Telescopic finder for motion picture cameras
US3045545A (en) * 1960-11-10 1962-07-24 Bausch & Lomb Optical system for sighting instruments

Also Published As

Publication number Publication date
DE1984790U (de) 1968-05-02
GB1209082A (en) 1970-10-14
US3438689A (en) 1969-04-15

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Legal Events

Date Code Title Description
ST Notification of lapse