CH607069A5 - - Google Patents

Info

Publication number
CH607069A5
CH607069A5 CH1262575A CH1262575A CH607069A5 CH 607069 A5 CH607069 A5 CH 607069A5 CH 1262575 A CH1262575 A CH 1262575A CH 1262575 A CH1262575 A CH 1262575A CH 607069 A5 CH607069 A5 CH 607069A5
Authority
CH
Switzerland
Application number
CH1262575A
Inventor
Ludwig Dr Bertele
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 CH1262575A priority Critical patent/CH607069A5/xx
Priority to DE19762620336 priority patent/DE2620336A1/de
Priority to US05/727,232 priority patent/US4099844A/en
Priority to FR7629967A priority patent/FR2325950A1/fr
Publication of CH607069A5 publication Critical patent/CH607069A5/xx

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
    • G02B15/1435—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 negative
    • G02B15/143507—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 negative arranged -++

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
CH1262575A 1975-09-29 1975-09-29 CH607069A5 (xx)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH1262575A CH607069A5 (xx) 1975-09-29 1975-09-29
DE19762620336 DE2620336A1 (de) 1975-09-29 1976-05-07 Objektiv veraenderbarer brennweite mit zerstreuendem frontglied
US05/727,232 US4099844A (en) 1975-09-29 1976-09-27 Variable focal lens having a divergent front element
FR7629967A FR2325950A1 (fr) 1975-09-29 1976-09-29 Dispositif d'objectif a distance focale variable, avec element avant divergent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1262575A CH607069A5 (xx) 1975-09-29 1975-09-29

Publications (1)

Publication Number Publication Date
CH607069A5 true CH607069A5 (xx) 1978-11-30

Family

ID=4384856

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1262575A CH607069A5 (xx) 1975-09-29 1975-09-29

Country Status (4)

Country Link
US (1) US4099844A (xx)
CH (1) CH607069A5 (xx)
DE (1) DE2620336A1 (xx)
FR (1) FR2325950A1 (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700162A1 (de) * 1986-09-01 1988-03-03 Docter Optic Wetzlar Gmbh Varioobjektiv fuer projektionszwecke
US4906078A (en) * 1987-08-12 1990-03-06 Olympus Optical Co., Ltd. Variable magnification viewfinder
JP3310854B2 (ja) * 1996-03-04 2002-08-05 富士写真光機株式会社 ワイドズームレンズ
US5875059A (en) * 1997-02-19 1999-02-23 Eastman Kodak Company Variable focal length lens system having a divergent front lens unit
US7218444B2 (en) * 2004-05-03 2007-05-15 Raytheon Company Dual-band, dual-focal-length, relayed refractive imager

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074874B (de) * 1954-02-18 1960-02-04 Long Island N Y Frank Gerard Back Glen Cove (V St A) Objektiv mit veränderlicher Brennweite
US3051052A (en) * 1959-08-31 1962-08-28 Bergstein Leonard Varifocal lens system with four points of exact image shift compensation

Also Published As

Publication number Publication date
US4099844A (en) 1978-07-11
FR2325950A1 (fr) 1977-04-22
DE2620336A1 (de) 1977-04-07
FR2325950B3 (xx) 1979-06-15

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Legal Events

Date Code Title Description
PL Patent ceased