GB2138591B - Infrared objective zoom lens assembly - Google Patents

Infrared objective zoom lens assembly

Info

Publication number
GB2138591B
GB2138591B GB08407101A GB8407101A GB2138591B GB 2138591 B GB2138591 B GB 2138591B GB 08407101 A GB08407101 A GB 08407101A GB 8407101 A GB8407101 A GB 8407101A GB 2138591 B GB2138591 B GB 2138591B
Authority
GB
United Kingdom
Prior art keywords
zoom lens
lens assembly
infrared objective
objective zoom
infrared
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
GB08407101A
Other versions
GB2138591A (en
Inventor
Iain Alexander Neil
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 GB08407101A priority Critical patent/GB2138591B/en
Publication of GB2138591A publication Critical patent/GB2138591A/en
Application granted granted Critical
Publication of GB2138591B publication Critical patent/GB2138591B/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
    • G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
    • 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
    • G02B15/1435—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 negative
    • G02B15/143503—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 negative arranged -+-

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Telescopes (AREA)
GB08407101A 1983-04-16 1984-03-19 Infrared objective zoom lens assembly Expired GB2138591B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08407101A GB2138591B (en) 1983-04-16 1984-03-19 Infrared objective zoom lens assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8310364 1983-04-16
GB08407101A GB2138591B (en) 1983-04-16 1984-03-19 Infrared objective zoom lens assembly

Publications (2)

Publication Number Publication Date
GB2138591A GB2138591A (en) 1984-10-24
GB2138591B true GB2138591B (en) 1986-05-08

Family

ID=26285847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08407101A Expired GB2138591B (en) 1983-04-16 1984-03-19 Infrared objective zoom lens assembly

Country Status (1)

Country Link
GB (1) GB2138591B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659171A (en) * 1984-05-22 1987-04-21 Barr & Stroud Limited Infrared afocal refractor telescope
GB2159297B (en) * 1984-05-22 1987-06-17 Bar & Stroud Limited Infrared afocal refractor telescope
ATE78106T1 (en) * 1986-04-03 1992-07-15 Pilkington Perkin Elmer Ltd OPTICAL BEAM EXPANDER.
IL89301A (en) * 1989-02-15 1993-04-04 Electro Optics Ind Ltd Zoom system
GB2244344B (en) * 1990-05-18 1993-09-29 Gec Ferranti Defence Syst Infra-red zoom lens
DE4135683A1 (en) * 1991-10-30 1993-05-06 Fa. Carl Zeiss, 7920 Heidenheim, De PANRATIC AFOCAL SYSTEM WITH ACHROMATIC AND ATHERMAL PROPERTIES IN THE INFRARED WAVELENGTH RANGE
US6018424A (en) * 1996-12-11 2000-01-25 Raytheon Company Conformal window design with static and dynamic aberration correction
US7961382B2 (en) * 2009-08-28 2011-06-14 Corning Incorporated Mid infrared spectral band continuous zoom system
CN110133832B (en) * 2019-04-03 2024-05-31 中国科学院西安光学精密机械研究所 Wavefront coding infrared athermalized continuous zoom lens

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126370B (en) * 1982-09-04 1986-03-05 Pilkington Perkin Elmer Ltd Infra-red objective zoom lenses

Also Published As

Publication number Publication date
GB2138591A (en) 1984-10-24

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Legal Events

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

Effective date: 20000319