DE1289327B - Objektiv mit veraenderbarer aequivalenter Brennweite - Google Patents

Objektiv mit veraenderbarer aequivalenter Brennweite

Info

Publication number
DE1289327B
DE1289327B DER36100A DER0036100A DE1289327B DE 1289327 B DE1289327 B DE 1289327B DE R36100 A DER36100 A DE R36100A DE R0036100 A DER0036100 A DE R0036100A DE 1289327 B DE1289327 B DE 1289327B
Authority
DE
Germany
Prior art keywords
lens
component
focal length
curvature
radius
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.)
Pending
Application number
DER36100A
Other languages
German (de)
English (en)
Inventor
Merigold Peter Arnold
Cook Gordon Henry
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.)
Rank Precision Industries Ltd
Original Assignee
Rank Precision Industries 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 Rank Precision Industries Ltd filed Critical Rank Precision Industries Ltd
Publication of DE1289327B publication Critical patent/DE1289327B/de
Pending 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 +--
    • 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
    • G02B15/1441—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 positive
    • G02B15/144109—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 positive arranged +--+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
DER36100A 1962-09-14 1963-09-12 Objektiv mit veraenderbarer aequivalenter Brennweite Pending DE1289327B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35088/62A GB1064323A (en) 1962-09-14 1962-09-14 Improvements in or relating to optical objectives of variable equivalent focal length

Publications (1)

Publication Number Publication Date
DE1289327B true DE1289327B (de) 1969-02-13

Family

ID=10373658

Family Applications (1)

Application Number Title Priority Date Filing Date
DER36100A Pending DE1289327B (de) 1962-09-14 1963-09-12 Objektiv mit veraenderbarer aequivalenter Brennweite

Country Status (5)

Country Link
JP (1) JPS5231743B1 (enExample)
CH (1) CH411383A (enExample)
DE (1) DE1289327B (enExample)
FR (1) FR1376655A (enExample)
GB (1) GB1064323A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1520489A (fr) * 1967-01-25 1968-04-12 Optique Prec Soc D Objectif à distance focale variable
JPH1054938A (ja) * 1996-08-12 1998-02-24 Asahi Optical Co Ltd 大口径非球面ズームレンズ系
JP3723643B2 (ja) * 1996-08-12 2005-12-07 ペンタックス株式会社 高変倍ズームレンズ系
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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766658A (en) * 1955-05-20 1956-10-16 Schwesinger Gerhard Variable focal length focusing lens system and device therefor
US2782684A (en) * 1953-10-09 1957-02-26 Watson W & Sons Ltd Variable magnification optical systems
DE1109397B (de) * 1959-04-20 1961-06-22 Dresden Feinmess Lichtstarkes Objektiv veraenderlicher Brennweite mit einem mindest 6-fachen Variationsbereich
US3038378A (en) * 1959-01-12 1962-06-12 Bell & Howell Co Variable focal length optical objective

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782684A (en) * 1953-10-09 1957-02-26 Watson W & Sons Ltd Variable magnification optical systems
US2766658A (en) * 1955-05-20 1956-10-16 Schwesinger Gerhard Variable focal length focusing lens system and device therefor
US3038378A (en) * 1959-01-12 1962-06-12 Bell & Howell Co Variable focal length optical objective
DE1109397B (de) * 1959-04-20 1961-06-22 Dresden Feinmess Lichtstarkes Objektiv veraenderlicher Brennweite mit einem mindest 6-fachen Variationsbereich

Also Published As

Publication number Publication date
FR1376655A (fr) 1964-10-31
CH411383A (fr) 1966-04-15
JPS5231743B1 (enExample) 1977-08-17
GB1064323A (en) 1967-04-05

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