GB1451276A - Lens structure - Google Patents

Lens structure

Info

Publication number
GB1451276A
GB1451276A GB1992274A GB1992274A GB1451276A GB 1451276 A GB1451276 A GB 1451276A GB 1992274 A GB1992274 A GB 1992274A GB 1992274 A GB1992274 A GB 1992274A GB 1451276 A GB1451276 A GB 1451276A
Authority
GB
United Kingdom
Prior art keywords
germanium
objective
lens structure
lenses
aspheric
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
GB1992274A
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB1992274A priority Critical patent/GB1451276A/en
Priority to NL7505187A priority patent/NL7505187A/en
Priority to DE19752519961 priority patent/DE2519961A1/en
Priority to IL47228A priority patent/IL47228A0/en
Priority to FR7514169A priority patent/FR2270607A1/fr
Priority to BE156093A priority patent/BE828770A/en
Publication of GB1451276A publication Critical patent/GB1451276A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

1451276 Infrared lenses RANK ORGANISATION Ltd 30 April 1975 [6 May 1974] 19922/74 Heading G2J An objective for the I.R. band (e.g. 8-14Ám) comprises the lenses shown wherein the front element is of Germanium; distance S 1 lies between 0À5F and F; the radii of the front and rear surfaces of each meniscus element differs by not more than 0À25F and at least one element of the rear unit is also made of Germanium. Surface R2 may be aspheric. A small flat field corrector may be used with the objective. Numerical data and modulation transfer functions are given for one example.
GB1992274A 1974-05-06 1974-05-06 Lens structure Expired GB1451276A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1992274A GB1451276A (en) 1974-05-06 1974-05-06 Lens structure
NL7505187A NL7505187A (en) 1974-05-06 1975-05-02 LENS CONSTRUCTION.
DE19752519961 DE2519961A1 (en) 1974-05-06 1975-05-05 MULTIPLE INFRARED LENS
IL47228A IL47228A0 (en) 1974-05-06 1975-05-05 Lens structure
FR7514169A FR2270607A1 (en) 1974-05-06 1975-05-06
BE156093A BE828770A (en) 1974-05-06 1975-05-06 GOAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1992274A GB1451276A (en) 1974-05-06 1974-05-06 Lens structure

Publications (1)

Publication Number Publication Date
GB1451276A true GB1451276A (en) 1976-09-29

Family

ID=10137380

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1992274A Expired GB1451276A (en) 1974-05-06 1974-05-06 Lens structure

Country Status (6)

Country Link
BE (1) BE828770A (en)
DE (1) DE2519961A1 (en)
FR (1) FR2270607A1 (en)
GB (1) GB1451276A (en)
IL (1) IL47228A0 (en)
NL (1) NL7505187A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121210A (en) * 1982-05-29 1983-12-14 Rodenstock Optik G Scanning objective having aspherical surface
US5668671A (en) * 1993-09-17 1997-09-16 British Aerospace Public Limited Co. Dioptric lens system
GB2339304A (en) * 1998-05-08 2000-01-19 Pilkington Perkin Elmer Ltd Infrared afocal telescope with three element objective and hybrid surface
CN109491058A (en) * 2018-12-29 2019-03-19 福建福光天瞳光学有限公司 A kind of f50mm high transmittance optics is without thermalization camera lens and its assembly method
WO2020150145A1 (en) * 2019-01-16 2020-07-23 X Development Llc High magnification afocal telescope with high index field curvature corrector

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411488A (en) * 1980-05-30 1983-10-25 Barr & Stroud Limited Afocal zoom refractor telescopes
US4738496A (en) * 1985-03-19 1988-04-19 Ludvik Canzek High speed infrared wide angle lens system
JPS63501899A (en) * 1985-12-11 1988-07-28 ヒユ−ズ・エアクラフト・カンパニ− optical detection system
DE4234721C2 (en) * 1991-10-16 1995-10-19 Bodenseewerk Geraetetech Three lens lens
GB9809739D0 (en) * 1998-05-08 1998-07-08 Pilkington Perkin Elmer Ltd Afocal telescope
DE102020133691A1 (en) 2020-12-16 2022-06-23 Valeo Schalter Und Sensoren Gmbh Infrared thermal imaging camera and on-board system to assist in driving a motor vehicle having such a camera

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121210A (en) * 1982-05-29 1983-12-14 Rodenstock Optik G Scanning objective having aspherical surface
US5668671A (en) * 1993-09-17 1997-09-16 British Aerospace Public Limited Co. Dioptric lens system
GB2339304A (en) * 1998-05-08 2000-01-19 Pilkington Perkin Elmer Ltd Infrared afocal telescope with three element objective and hybrid surface
GB2339304B (en) * 1998-05-08 2002-01-30 Pilkington Perkin Elmer Ltd Infrared Afocal Telescope With Three Element Objective And Hybrid Surface
CN109491058A (en) * 2018-12-29 2019-03-19 福建福光天瞳光学有限公司 A kind of f50mm high transmittance optics is without thermalization camera lens and its assembly method
CN109491058B (en) * 2018-12-29 2023-12-08 福建福光天瞳光学有限公司 F50mm high-transmittance optical athermalized lens and assembly method thereof
WO2020150145A1 (en) * 2019-01-16 2020-07-23 X Development Llc High magnification afocal telescope with high index field curvature corrector
US11777603B2 (en) 2019-01-16 2023-10-03 X Development Llc High magnification afocal telescope with high index field curvature corrector

Also Published As

Publication number Publication date
BE828770A (en) 1975-09-01
FR2270607A1 (en) 1975-12-05
DE2519961A1 (en) 1975-11-20
NL7505187A (en) 1975-11-10
IL47228A0 (en) 1975-07-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee