GB783626A - Improvements in or relating to infra-red radiation transmitting optical filters - Google Patents

Improvements in or relating to infra-red radiation transmitting optical filters

Info

Publication number
GB783626A
GB783626A GB59055A GB59055A GB783626A GB 783626 A GB783626 A GB 783626A GB 59055 A GB59055 A GB 59055A GB 59055 A GB59055 A GB 59055A GB 783626 A GB783626 A GB 783626A
Authority
GB
United Kingdom
Prior art keywords
infra
transmitting optical
hydrogen
relating
optical filters
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
GB59055A
Inventor
Ludwig Wesch
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.)
MAGNESIT AG DEUTSCHE
Original Assignee
MAGNESIT AG DEUTSCHE
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 MAGNESIT AG DEUTSCHE filed Critical MAGNESIT AG DEUTSCHE
Priority to GB59055A priority Critical patent/GB783626A/en
Publication of GB783626A publication Critical patent/GB783626A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)
  • Light Receiving Elements (AREA)

Abstract

One layer of an infra-red transmitting optical filter is formed by the thermal evaporation on to a carrier such as glass or a plastic polymeric material of a rare earth metal oxalate, zinc oxide, cadmium oxide, or one of the sulphides, selenides or tellurides of cadmium, zinc, or inerany, preferably in the atmosphere of a protective gas such as hydrogen, hydrogen sulphide, hydrogen selenide or hydrogen telluride.
GB59055A 1955-01-07 1955-01-07 Improvements in or relating to infra-red radiation transmitting optical filters Expired GB783626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB59055A GB783626A (en) 1955-01-07 1955-01-07 Improvements in or relating to infra-red radiation transmitting optical filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB59055A GB783626A (en) 1955-01-07 1955-01-07 Improvements in or relating to infra-red radiation transmitting optical filters

Publications (1)

Publication Number Publication Date
GB783626A true GB783626A (en) 1957-09-25

Family

ID=9707045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB59055A Expired GB783626A (en) 1955-01-07 1955-01-07 Improvements in or relating to infra-red radiation transmitting optical filters

Country Status (1)

Country Link
GB (1) GB783626A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057316A (en) * 1975-02-18 1977-11-08 Balzers Patent- Und Beteiligungs-Aktiengesellschaft Reflection reducing multilayer system on a highly refractive infrared transmitting substrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057316A (en) * 1975-02-18 1977-11-08 Balzers Patent- Und Beteiligungs-Aktiengesellschaft Reflection reducing multilayer system on a highly refractive infrared transmitting substrate

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