CH506798A - Objectif à focale variable et utilisation de cet objectif - Google Patents

Objectif à focale variable et utilisation de cet objectif

Info

Publication number
CH506798A
CH506798A CH112969A CH112969A CH506798A CH 506798 A CH506798 A CH 506798A CH 112969 A CH112969 A CH 112969A CH 112969 A CH112969 A CH 112969A CH 506798 A CH506798 A CH 506798A
Authority
CH
Switzerland
Prior art keywords
varifocal lens
varifocal
lens
Prior art date
Application number
CH112969A
Other languages
English (en)
Inventor
Horace Hopkins Harold
Original Assignee
Watson W & Sons 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 Watson W & Sons Ltd filed Critical Watson W & Sons Ltd
Publication of CH506798A publication Critical patent/CH506798A/fr

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)
  • Microscoopes, Condenser (AREA)
  • Lenses (AREA)
  • Telescopes (AREA)
CH112969A 1968-01-25 1969-01-24 Objectif à focale variable et utilisation de cet objectif CH506798A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4026/68A GB1260653A (en) 1968-01-25 1968-01-25 Improvements in or relating to optical apparatus

Publications (1)

Publication Number Publication Date
CH506798A true CH506798A (fr) 1971-04-30

Family

ID=9769343

Family Applications (1)

Application Number Title Priority Date Filing Date
CH112969A CH506798A (fr) 1968-01-25 1969-01-24 Objectif à focale variable et utilisation de cet objectif

Country Status (7)

Country Link
US (1) US3619035A (fr)
AT (1) AT301900B (fr)
CH (1) CH506798A (fr)
DE (1) DE1903626A1 (fr)
FR (1) FR2000764A1 (fr)
GB (1) GB1260653A (fr)
NL (1) NL6901141A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992083A (en) * 1973-03-23 1976-11-16 Canon Kabushiki Kaisha Variable focal length optical system of super-high magnification ratio
US3915557A (en) * 1974-04-19 1975-10-28 Optigon Res & Dev Corp Zoom lens
JPS54133355A (en) * 1978-04-07 1979-10-17 Nippon Chemical Ind Erect type zoom telephoto optical system
JPS5576318A (en) * 1978-12-05 1980-06-09 Canon Inc Zoom lens system
GB2107899B (en) * 1981-10-20 1985-12-11 Mitutoyo Mfg Co Ltd Projecting apparatus
JPS59172617A (ja) * 1983-03-22 1984-09-29 Olympus Optical Co Ltd 自動制御式照明光学系を備えた顕微鏡
JPS61122623A (ja) * 1984-11-19 1986-06-10 Canon Inc 投影装置
US5668660A (en) * 1994-11-29 1997-09-16 Hunt; Gary D. Microscope with plural zoom lens assemblies in series
JP4084061B2 (ja) * 2002-03-18 2008-04-30 独立行政法人科学技術振興機構 高安定性光学顕微鏡
DE10355523A1 (de) * 2003-11-21 2005-08-11 Carl Zeiss Jena Gmbh Auflicht-Fluoreszenz-Stereomikroskop
DE102008041819A1 (de) * 2008-09-04 2010-03-11 Leica Microsystems (Schweiz) Ag Optisches Abbildungssystem
AU2018445019A1 (en) * 2018-10-09 2021-03-25 Eardley Holding Ag Optical assembly, optical instrument and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209532A (en) * 1938-05-27 1940-07-30 Zeiss Carl Fa Microscope
US3185029A (en) * 1961-01-23 1965-05-25 Bausch & Lomb Linear zoom optical system
US3057259A (en) * 1961-06-22 1962-10-09 Bausch & Lomb Variable magnification optical systems
US3353891A (en) * 1964-06-18 1967-11-21 Bausch & Lomb Zoom lens system having front mounted axially movable aperture stop to control numerical aperture during magnification change
US3421807A (en) * 1967-09-08 1969-01-14 Bausch & Lomb Zoom lens system for microscope

Also Published As

Publication number Publication date
AT301900B (de) 1972-09-25
FR2000764A1 (fr) 1969-09-12
NL6901141A (fr) 1969-07-29
US3619035A (en) 1971-11-09
GB1260653A (en) 1972-01-19
DE1903626A1 (de) 1969-09-04

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Legal Events

Date Code Title Description
PL Patent ceased