DE1497560B1 - Pankratisches Objektiv - Google Patents

Pankratisches Objektiv

Info

Publication number
DE1497560B1
DE1497560B1 DE19661497560 DE1497560A DE1497560B1 DE 1497560 B1 DE1497560 B1 DE 1497560B1 DE 19661497560 DE19661497560 DE 19661497560 DE 1497560 A DE1497560 A DE 1497560A DE 1497560 B1 DE1497560 B1 DE 1497560B1
Authority
DE
Germany
Prior art keywords
lens
divergent
group
focal length
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
DE19661497560
Other languages
German (de)
English (en)
Inventor
Merigold Peter Arnold
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 Organization Ltd
Original Assignee
Rank Organization 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 Organization Ltd filed Critical Rank Organization Ltd
Publication of DE1497560B1 publication Critical patent/DE1497560B1/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
    • G02B15/144—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
    • G02B15/144507—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 -++-

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Lens Barrels (AREA)
DE19661497560 1965-07-26 1966-07-23 Pankratisches Objektiv Pending DE1497560B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31812/65A GB1109913A (en) 1965-07-26 1965-07-26 Improvements in or relating to optical objectives of variable equivalent focal length

Publications (1)

Publication Number Publication Date
DE1497560B1 true DE1497560B1 (de) 1971-05-13

Family

ID=10328788

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661497560 Pending DE1497560B1 (de) 1965-07-26 1966-07-23 Pankratisches Objektiv

Country Status (5)

Country Link
CH (1) CH452219A (enExample)
DE (1) DE1497560B1 (enExample)
FR (1) FR1487806A (enExample)
GB (1) GB1109913A (enExample)
NL (1) NL6610525A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206362A1 (de) * 1981-02-23 1982-12-09 Nippon Kogaku K.K., Tokyo Viergruppiges tele-zoomobjektiv
EP1394591A1 (en) * 2002-08-28 2004-03-03 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3088112B2 (ja) * 1990-10-12 2000-09-18 旭光学工業株式会社 ズームレンズ
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
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206362A1 (de) * 1981-02-23 1982-12-09 Nippon Kogaku K.K., Tokyo Viergruppiges tele-zoomobjektiv
EP1394591A1 (en) * 2002-08-28 2004-03-03 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus
US6825990B2 (en) 2002-08-28 2004-11-30 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus

Also Published As

Publication number Publication date
CH452219A (fr) 1968-05-31
FR1487806A (fr) 1967-07-07
GB1109913A (en) 1968-04-18
NL6610525A (enExample) 1967-01-27

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