GB2085184B - Afocal dual magnification refractor telescopes - Google Patents

Afocal dual magnification refractor telescopes

Info

Publication number
GB2085184B
GB2085184B GB8126611A GB8126611A GB2085184B GB 2085184 B GB2085184 B GB 2085184B GB 8126611 A GB8126611 A GB 8126611A GB 8126611 A GB8126611 A GB 8126611A GB 2085184 B GB2085184 B GB 2085184B
Authority
GB
United Kingdom
Prior art keywords
afocal
dual magnification
refractor
telescopes
refractor telescopes
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
GB8126611A
Other versions
GB2085184A (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.)
Thales Optronics Ltd
Original Assignee
Thales Optronics 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 Thales Optronics Ltd filed Critical Thales Optronics Ltd
Priority to GB8126611A priority Critical patent/GB2085184B/en
Publication of GB2085184A publication Critical patent/GB2085184A/en
Application granted granted Critical
Publication of GB2085184B publication Critical patent/GB2085184B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
    • G02B15/04—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by changing a part

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Telescopes (AREA)
  • Lenses (AREA)
GB8126611A 1980-10-08 1981-09-02 Afocal dual magnification refractor telescopes Expired GB2085184B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8126611A GB2085184B (en) 1980-10-08 1981-09-02 Afocal dual magnification refractor telescopes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8032396 1980-10-08
GB8126611A GB2085184B (en) 1980-10-08 1981-09-02 Afocal dual magnification refractor telescopes

Publications (2)

Publication Number Publication Date
GB2085184A GB2085184A (en) 1982-04-21
GB2085184B true GB2085184B (en) 1984-12-12

Family

ID=26277141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8126611A Expired GB2085184B (en) 1980-10-08 1981-09-02 Afocal dual magnification refractor telescopes

Country Status (1)

Country Link
GB (1) GB2085184B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486069A (en) * 1981-07-01 1984-12-04 Barr & Stroud Limited Afocal telescopes
GB2152227B (en) * 1982-01-14 1986-01-29 Barr & Stroud Ltd Infrared optical system
US4600265A (en) * 1983-01-27 1986-07-15 Pilkington P.E. Limited Infra-red optical systems
GB2244344B (en) * 1990-05-18 1993-09-29 Gec Ferranti Defence Syst Infra-red zoom lens
US5737119A (en) * 1995-09-06 1998-04-07 Hughes Electronics Thermal imaging device
DE102005002710A1 (en) * 2005-01-19 2006-07-27 Linos Photonics Gmbh & Co. Kg Optical system

Also Published As

Publication number Publication date
GB2085184A (en) 1982-04-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee