CH580821A5 - - Google Patents

Info

Publication number
CH580821A5
CH580821A5 CH822674A CH822674A CH580821A5 CH 580821 A5 CH580821 A5 CH 580821A5 CH 822674 A CH822674 A CH 822674A CH 822674 A CH822674 A CH 822674A CH 580821 A5 CH580821 A5 CH 580821A5
Authority
CH
Switzerland
Application number
CH822674A
Original Assignee
Bertele Ludwig
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 Bertele Ludwig filed Critical Bertele Ludwig
Priority to CH822674A priority Critical patent/CH580821A5/xx
Priority to DE19752525100 priority patent/DE2525100A1/de
Priority to US05/585,360 priority patent/US4018510A/en
Priority to FR7518111A priority patent/FR2274938A1/fr
Priority to AT446975A priority patent/AT342329B/de
Priority to GB25458/75A priority patent/GB1495062A/en
Publication of CH580821A5 publication Critical patent/CH580821A5/xx

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B21/00—Microscopes
    • G02B21/02—Objectives
    • 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
    • G02B15/146—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 more than five groups
    • G02B15/1465—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 more than five groups the first group being negative
CH822674A 1974-06-13 1974-06-13 CH580821A5 (no)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH822674A CH580821A5 (no) 1974-06-13 1974-06-13
DE19752525100 DE2525100A1 (de) 1974-06-13 1975-06-05 Varioobjektiv mit verschiebbarem linsenglied von positiver brechkraft
US05/585,360 US4018510A (en) 1974-06-13 1975-06-09 Varifocal objective containing movable lens component of positive refractivity
FR7518111A FR2274938A1 (fr) 1974-06-13 1975-06-10 Objectif a foyer variable comprenant un element, susceptible de coulisser, formant lentille a indice de refraction positif
AT446975A AT342329B (de) 1974-06-13 1975-06-11 Objektiv mit veranderbarer brennweite
GB25458/75A GB1495062A (en) 1974-06-13 1975-06-13 Objectives having variable focal length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH822674A CH580821A5 (no) 1974-06-13 1974-06-13

Publications (1)

Publication Number Publication Date
CH580821A5 true CH580821A5 (no) 1976-12-15

Family

ID=4337077

Family Applications (1)

Application Number Title Priority Date Filing Date
CH822674A CH580821A5 (no) 1974-06-13 1974-06-13

Country Status (6)

Country Link
US (1) US4018510A (no)
AT (1) AT342329B (no)
CH (1) CH580821A5 (no)
DE (1) DE2525100A1 (no)
FR (1) FR2274938A1 (no)
GB (1) GB1495062A (no)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH621414A5 (no) * 1977-11-15 1981-01-30 Gretag Ag
JPH0658454B2 (ja) * 1985-07-03 1994-08-03 キヤノン株式会社 変倍フアインダ−
DE3700162A1 (de) * 1986-09-01 1988-03-03 Docter Optic Wetzlar Gmbh Varioobjektiv fuer projektionszwecke
JPS63221313A (ja) * 1987-03-11 1988-09-14 Olympus Optical Co Ltd ズ−ムフアインダ−
US5930032A (en) * 1994-12-22 1999-07-27 Asahi Kogaku Kogyo Kabushiki Kaisha UV image forming optical system and lens for UV radiation
JPH11237549A (ja) * 1998-02-19 1999-08-31 Fuji Photo Optical Co Ltd 簡易広角ズームレンズ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1261217A (en) * 1968-03-08 1972-01-26 Agfa Gevaert Ag Camera objective with continuously variable focal length
US3597048A (en) * 1969-02-07 1971-08-03 Ludwig Bertele Varifocal objective with movable lens component of positive refractivity

Also Published As

Publication number Publication date
DE2525100A1 (de) 1976-01-02
GB1495062A (en) 1977-12-14
FR2274938B3 (no) 1978-02-03
US4018510A (en) 1977-04-19
ATA446975A (de) 1977-07-15
AT342329B (de) 1978-03-28
FR2274938A1 (fr) 1976-01-09

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Legal Events

Date Code Title Description
PL Patent ceased