GB899635A - Improvements in or relating to control devices for optical objectives of variable focal length - Google Patents

Improvements in or relating to control devices for optical objectives of variable focal length

Info

Publication number
GB899635A
GB899635A GB18134/58A GB1813458A GB899635A GB 899635 A GB899635 A GB 899635A GB 18134/58 A GB18134/58 A GB 18134/58A GB 1813458 A GB1813458 A GB 1813458A GB 899635 A GB899635 A GB 899635A
Authority
GB
United Kingdom
Prior art keywords
driving element
mount
roller
objective
control
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
GB18134/58A
Other languages
English (en)
Inventor
Gordon Henry Cook
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.)
Taylor Taylor and Hobson Ltd
Original Assignee
Taylor Taylor and Hobson 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 to NL232999D priority Critical patent/NL232999A/xx
Application filed by Taylor Taylor and Hobson Ltd filed Critical Taylor Taylor and Hobson Ltd
Priority to GB18134/58A priority patent/GB899635A/en
Priority to FR1213899D priority patent/FR1213899A/fr
Priority to CH6573058A priority patent/CH367642A/fr
Publication of GB899635A publication Critical patent/GB899635A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • 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)
  • Lens Barrels (AREA)
  • Telescopes (AREA)
GB18134/58A 1958-06-06 1958-06-06 Improvements in or relating to control devices for optical objectives of variable focal length Expired GB899635A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL232999D NL232999A (enrdf_load_stackoverflow) 1958-06-06
GB18134/58A GB899635A (en) 1958-06-06 1958-06-06 Improvements in or relating to control devices for optical objectives of variable focal length
FR1213899D FR1213899A (fr) 1958-06-06 1958-11-03 Perfectionnements aux systèmes de commande d'objectifs optiques à distance focale variable
CH6573058A CH367642A (fr) 1958-06-06 1958-11-03 Dispositif de commande et de réglage pour un objectif optique à longueur focale variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18134/58A GB899635A (en) 1958-06-06 1958-06-06 Improvements in or relating to control devices for optical objectives of variable focal length

Publications (1)

Publication Number Publication Date
GB899635A true GB899635A (en) 1962-06-27

Family

ID=10107230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18134/58A Expired GB899635A (en) 1958-06-06 1958-06-06 Improvements in or relating to control devices for optical objectives of variable focal length

Country Status (4)

Country Link
CH (1) CH367642A (enrdf_load_stackoverflow)
FR (1) FR1213899A (enrdf_load_stackoverflow)
GB (1) GB899635A (enrdf_load_stackoverflow)
NL (1) NL232999A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979000072A1 (en) * 1977-07-28 1979-02-22 D Pandres Ratio preserving control system
US4156933A (en) * 1977-07-28 1979-05-29 Pandres Dave Jr Ratio preserving control system
GB2237406A (en) * 1989-10-27 1991-05-01 Asahi Optical Co Ltd Zoom lens barrel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136131B (de) * 1960-06-18 1962-09-06 Elbe Kamera Gmbh Objektiv mit veraenderlicher Brennweite
JPS5952402B2 (ja) * 1980-02-18 1984-12-19 株式会社三協精機製作所 ズ−ムレンズ鏡筒

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979000072A1 (en) * 1977-07-28 1979-02-22 D Pandres Ratio preserving control system
US4156933A (en) * 1977-07-28 1979-05-29 Pandres Dave Jr Ratio preserving control system
GB2237406A (en) * 1989-10-27 1991-05-01 Asahi Optical Co Ltd Zoom lens barrel
GB2237406B (en) * 1989-10-27 1993-11-03 Asahi Optical Co Ltd Zoom lens barrel
US5469300A (en) * 1989-10-27 1995-11-21 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens barrel

Also Published As

Publication number Publication date
CH367642A (fr) 1963-02-28
NL232999A (enrdf_load_stackoverflow)
FR1213899A (fr) 1960-04-05

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