CH367642A - Control and adjustment device for an optical lens with variable focal length - Google Patents

Control and adjustment device for an optical lens with variable focal length

Info

Publication number
CH367642A
CH367642A CH6573058A CH6573058A CH367642A CH 367642 A CH367642 A CH 367642A CH 6573058 A CH6573058 A CH 6573058A CH 6573058 A CH6573058 A CH 6573058A CH 367642 A CH367642 A CH 367642A
Authority
CH
Switzerland
Prior art keywords
control
focal length
optical lens
adjustment device
variable focal
Prior art date
Application number
CH6573058A
Other languages
French (fr)
Inventor
Henry Cook Gordon
Original Assignee
Taylor Taylor & Hobson Limited
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 Taylor Taylor & Hobson Limited filed Critical Taylor Taylor & Hobson Limited
Publication of CH367642A publication Critical patent/CH367642A/en

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)
CH6573058A 1958-06-06 1958-11-03 Control and adjustment device for an optical lens with variable focal length CH367642A (en)

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
CH367642A true CH367642A (en) 1963-02-28

Family

ID=10107230

Family Applications (1)

Application Number Title Priority Date Filing Date
CH6573058A CH367642A (en) 1958-06-06 1958-11-03 Control and adjustment device for an optical lens with variable focal length

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037623A2 (en) * 1980-02-18 1981-10-14 Kabushiki Kaisha Sankyo Seiki Seisakusho Zoom lens having barrel components which can be moulded from plastics material

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136131B (en) * 1960-06-18 1962-09-06 Elbe Kamera Gmbh Lens with variable focal length
GB2021286B (en) * 1977-07-28 1982-05-12 Pandres D Ration preserving control system
US4156933A (en) * 1977-07-28 1979-05-29 Pandres Dave Jr Ratio preserving control system
FR2653902B1 (en) * 1989-10-27 1994-03-11 Asahi Kogaku Kogyo Kk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037623A2 (en) * 1980-02-18 1981-10-14 Kabushiki Kaisha Sankyo Seiki Seisakusho Zoom lens having barrel components which can be moulded from plastics material
EP0037623A3 (en) * 1980-02-18 1982-09-08 Kabushiki Kaisha Sankyo Seiki Seisakusho Zoom lens having barrel components which can be moulded from plastics material

Also Published As

Publication number Publication date
NL232999A (en)
GB899635A (en) 1962-06-27
FR1213899A (en) 1960-04-05

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