GB1345505A - Optical lens for infrared radiation - Google Patents

Optical lens for infrared radiation

Info

Publication number
GB1345505A
GB1345505A GB1345505DA GB1345505A GB 1345505 A GB1345505 A GB 1345505A GB 1345505D A GB1345505D A GB 1345505DA GB 1345505 A GB1345505 A GB 1345505A
Authority
GB
United Kingdom
Prior art keywords
lens
optical lens
infrared radiation
optical
concave towards
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
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.)
Dallmeyer Ltd J H
Original Assignee
Dallmeyer Ltd J H
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 Dallmeyer Ltd J H filed Critical Dallmeyer Ltd J H
Publication of GB1345505A publication Critical patent/GB1345505A/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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below

Landscapes

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

Abstract

1345505 Lens systems J H DALLMEYER Ltd and R P HARVEY 19 July 1972 33872/72 Heading G2J An optical lens is constructed of three single components made of germanium of optical quality and comprising front and back convergent meniscus components a, c, concave towards the back of the lens, and an intermediate divergent component b between a and c, preferably concave towards the front, as shown. The following relationships obtain:- d 2 < 0À3 times the equivalent focal length of the lens, (f); d 1 + d 2 + d 3 + d 4 + d 5 > f; d 3 < both d 1 and d 5 . Optical data are given. (For Figure see next page)
GB1345505D 1972-07-19 1972-07-19 Optical lens for infrared radiation Expired GB1345505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3387272 1972-07-19

Publications (1)

Publication Number Publication Date
GB1345505A true GB1345505A (en) 1974-01-30

Family

ID=10358547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1345505D Expired GB1345505A (en) 1972-07-19 1972-07-19 Optical lens for infrared radiation

Country Status (1)

Country Link
GB (1) GB1345505A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200010A (en) * 1981-06-03 1982-12-08 Matsushita Electric Ind Co Ltd Lens for infrared rays
US6507432B1 (en) 1999-07-26 2003-01-14 Fuji Photo Optical Co., Ltd. Bright wide-angle infrared lens
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200010A (en) * 1981-06-03 1982-12-08 Matsushita Electric Ind Co Ltd Lens for infrared rays
JPS6119966B2 (en) * 1981-06-03 1986-05-20 Matsushita Electric Ind Co Ltd
US6507432B1 (en) 1999-07-26 2003-01-14 Fuji Photo Optical Co., Ltd. Bright wide-angle infrared lens
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

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Legal Events

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