DE1301152B - Pankratisches Foto-Objektiv - Google Patents

Pankratisches Foto-Objektiv

Info

Publication number
DE1301152B
DE1301152B DER28332A DER0028332A DE1301152B DE 1301152 B DE1301152 B DE 1301152B DE R28332 A DER28332 A DE R28332A DE R0028332 A DER0028332 A DE R0028332A DE 1301152 B DE1301152 B DE 1301152B
Authority
DE
Germany
Prior art keywords
lens
focal length
equivalent focal
vario
collecting
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
DER28332A
Other languages
German (de)
English (en)
Inventor
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 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
Priority claimed from GB24156/59A external-priority patent/GB953863A/en
Application filed by Rank Organization Ltd filed Critical Rank Organization Ltd
Publication of DE1301152B publication Critical patent/DE1301152B/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
    • G02B15/143—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)
  • Lenses (AREA)
DER28332A 1959-07-14 1960-07-13 Pankratisches Foto-Objektiv Pending DE1301152B (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB24156/59A GB953863A (en) 1959-07-14 1959-07-14 Improvements in or relating to optical objectives of variable focal length
GB3005459 1959-09-03

Publications (1)

Publication Number Publication Date
DE1301152B true DE1301152B (de) 1969-08-14

Family

ID=26256951

Family Applications (1)

Application Number Title Priority Date Filing Date
DER28332A Pending DE1301152B (de) 1959-07-14 1960-07-13 Pankratisches Foto-Objektiv

Country Status (5)

Country Link
US (1) US3081671A (en, 2012)
CH (1) CH380405A (en, 2012)
DE (1) DE1301152B (en, 2012)
FR (1) FR1267355A (en, 2012)
NL (1) NL253793A (en, 2012)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS524461B2 (en, 2012) * 1973-03-23 1977-02-04
JPS5441333B2 (en, 2012) * 1973-03-23 1979-12-07
US3992083A (en) * 1973-03-23 1976-11-16 Canon Kabushiki Kaisha Variable focal length optical system of super-high magnification ratio

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE101010C (en, 2012) *
GB381662A (en) * 1931-08-18 1932-10-13 Arthur Warmisham Improvement in lenses
US2663223A (en) * 1950-07-18 1953-12-22 Watson W & Sons Ltd Variable magnification optical system
DE1009820B (de) * 1955-05-21 1957-06-06 Schneider Co Optische Werke Objektiv mit variabler Brennweite

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB449434A (en) * 1935-11-04 1936-06-26 Hugh Ivan Gramatzki Improvements in photographic and like objectives
US2179850A (en) * 1937-03-17 1939-11-14 American Optical Corp Optical system for measuring changes in magnification
US2906172A (en) * 1955-05-21 1959-09-29 Schneider Co Optische Werke Varifocal objective system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE101010C (en, 2012) *
GB381662A (en) * 1931-08-18 1932-10-13 Arthur Warmisham Improvement in lenses
US2663223A (en) * 1950-07-18 1953-12-22 Watson W & Sons Ltd Variable magnification optical system
DE1009820B (de) * 1955-05-21 1957-06-06 Schneider Co Optische Werke Objektiv mit variabler Brennweite

Also Published As

Publication number Publication date
US3081671A (en) 1963-03-19
FR1267355A (fr) 1961-07-21
CH380405A (fr) 1964-07-31
NL253793A (en, 2012)

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