GB1088382A - Objectives for infra-red radiation - Google Patents

Objectives for infra-red radiation

Info

Publication number
GB1088382A
GB1088382A GB648965A GB648965A GB1088382A GB 1088382 A GB1088382 A GB 1088382A GB 648965 A GB648965 A GB 648965A GB 648965 A GB648965 A GB 648965A GB 1088382 A GB1088382 A GB 1088382A
Authority
GB
United Kingdom
Prior art keywords
sapphire
objectives
feb
microns
filter
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
GB648965A
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.)
EUROP DE MATERIALS SPECIAUX SO
Original Assignee
EUROP DE MATERIALS SPECIAUX SO
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 EUROP DE MATERIALS SPECIAUX SO filed Critical EUROP DE MATERIALS SPECIAUX SO
Publication of GB1088382A publication Critical patent/GB1088382A/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)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Lenses (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

1,088,382. Infrared objectives. SOCIETE EUROPEENNE DE MATERIALS SPECIAUX. Feb. 15, 1965 [Feb. 14, 1964], No.6489/65. Heading G2J. An objective for use in the infrared, particularly in the range of 3-5 microns, comprises at least three lenses of which at least one is made of arsenic trisulphide and another of sapphire. As shown, the first two are of arsenic trisulphide and the third of sapphire. A window F1 of silicon has an anti-reflecting coating and a filter F2 of sapphire has interference coatings on its two faces to produce low pass and high pass characteristics respectively such that the spectral range passed is 3À2-4À8 microns. The filter F2 may be maintained at a low temperature. The diaphragms D1-D5 are of polished metal and surface treated to obtain high reflective power to reduce heat emission therefrom. Optical data are provided for the example shown.
GB648965A 1964-02-14 1965-02-15 Objectives for infra-red radiation Expired GB1088382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR963865A FR1393576A (en) 1964-02-14 1964-02-14 Realization of an objective for the medium infrared

Publications (1)

Publication Number Publication Date
GB1088382A true GB1088382A (en) 1967-10-25

Family

ID=8823221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB648965A Expired GB1088382A (en) 1964-02-14 1965-02-15 Objectives for infra-red radiation

Country Status (4)

Country Link
DE (1) DE1258622B (en)
FR (1) FR1393576A (en)
GB (1) GB1088382A (en)
NL (1) NL6501533A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633985A (en) * 1969-07-28 1972-01-11 Comp Generale Electricite Concentration objective composed of four lenses
US4427259A (en) 1982-08-23 1984-01-24 Rockwell International Corporation Selectable field-of-view infrared lens

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62237413A (en) * 1986-04-09 1987-10-17 Konika Corp Collimator lens
DE4327656A1 (en) * 1993-08-17 1995-02-23 Steinheil Optronik Gmbh Infrared lens

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE947339C (en) * 1943-07-24 1956-08-16 Heraeus Gmbh W C Resistant interference light filter
US2788708A (en) * 1953-07-28 1957-04-16 Baird Associates Inc Optical apparatus for collecting radiations from a field of view

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633985A (en) * 1969-07-28 1972-01-11 Comp Generale Electricite Concentration objective composed of four lenses
US4427259A (en) 1982-08-23 1984-01-24 Rockwell International Corporation Selectable field-of-view infrared lens

Also Published As

Publication number Publication date
FR1393576A (en) 1965-03-26
NL6501533A (en) 1965-08-16
DE1258622B (en) 1968-01-11

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