GB810152A - Improvements relating to vari-focal optical systems - Google Patents

Improvements relating to vari-focal optical systems

Info

Publication number
GB810152A
GB810152A GB35165/56A GB3516556A GB810152A GB 810152 A GB810152 A GB 810152A GB 35165/56 A GB35165/56 A GB 35165/56A GB 3516556 A GB3516556 A GB 3516556A GB 810152 A GB810152 A GB 810152A
Authority
GB
United Kingdom
Prior art keywords
positive
lever
negative
movement
roller
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.)
Expired
Application number
GB35165/56A
Other languages
English (en)
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.)
Optische Industrie de Oude Delft NV
Original Assignee
Optische Industrie de Oude Delft NV
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 Optische Industrie de Oude Delft NV filed Critical Optische Industrie de Oude Delft NV
Publication of GB810152A publication Critical patent/GB810152A/en
Expired 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
    • G02B15/142—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 two groups only
    • G02B15/1421—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 two groups only the first group being positive

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Telescopes (AREA)
  • Structure And Mechanism Of Cameras (AREA)
  • Lenses (AREA)
GB35165/56A 1955-11-16 1956-11-16 Improvements relating to vari-focal optical systems Expired GB810152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL810152X 1955-11-16

Publications (1)

Publication Number Publication Date
GB810152A true GB810152A (en) 1959-03-11

Family

ID=19837239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35165/56A Expired GB810152A (en) 1955-11-16 1956-11-16 Improvements relating to vari-focal optical systems

Country Status (3)

Country Link
DE (1) DE1108457B (de)
FR (1) FR1167796A (de)
GB (1) GB810152A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103046B (de) * 1959-11-06 1961-03-23 Schneider Co Optische Werke Vario Objektiv, vorzugsweise Vario-Vorsatzsystem
US3051048A (en) * 1959-04-22 1962-08-28 Schneider Co Optische Werke Mechanism for relatively displacing the components of optical objectives
US3062102A (en) * 1959-11-25 1962-11-06 Eastman Kodak Co Mechanism for operation of zoom lens
JPS5118812B1 (de) * 1968-04-15 1976-06-12

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090282A (en) * 1959-01-28 1963-05-21 Angenieux Pierre Mechanism for controlling the axial displacements of optical elements
DE1136131B (de) * 1960-06-18 1962-09-06 Elbe Kamera Gmbh Objektiv mit veraenderlicher Brennweite

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE650907C (de) * 1934-08-28 1937-10-05 Hugh Iwan Gramatzki Optisches System

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051048A (en) * 1959-04-22 1962-08-28 Schneider Co Optische Werke Mechanism for relatively displacing the components of optical objectives
DE1103046B (de) * 1959-11-06 1961-03-23 Schneider Co Optische Werke Vario Objektiv, vorzugsweise Vario-Vorsatzsystem
US3062102A (en) * 1959-11-25 1962-11-06 Eastman Kodak Co Mechanism for operation of zoom lens
JPS5118812B1 (de) * 1968-04-15 1976-06-12

Also Published As

Publication number Publication date
DE1108457B (de) 1961-06-08
FR1167796A (fr) 1958-11-28

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