CA2230552A1 - Wide-band two layer antireflection coating for optical surfaces - Google Patents

Wide-band two layer antireflection coating for optical surfaces Download PDF

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Publication number
CA2230552A1
CA2230552A1 CA002230552A CA2230552A CA2230552A1 CA 2230552 A1 CA2230552 A1 CA 2230552A1 CA 002230552 A CA002230552 A CA 002230552A CA 2230552 A CA2230552 A CA 2230552A CA 2230552 A1 CA2230552 A1 CA 2230552A1
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CA
Canada
Prior art keywords
layer
coating
band
wide
substrate
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.)
Granted
Application number
CA002230552A
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French (fr)
Other versions
CA2230552C (en
Inventor
James Stilburn
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.)
National Research Council of Canada
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National Research Council of Canada
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 National Research Council of Canada filed Critical National Research Council of Canada
Priority to CA 2230552 priority Critical patent/CA2230552C/en
Publication of CA2230552A1 publication Critical patent/CA2230552A1/en
Application granted granted Critical
Publication of CA2230552C publication Critical patent/CA2230552C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/113—Anti-reflection coatings using inorganic layer materials only
    • G02B1/115—Multilayers

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

A process for forming a two-layer coating on glass or another substrate involves applying first a layer of light metal fluoride on the substrate and subsequently a layer of a porous metal oxide e.g. silica. The metal fluoride layer may be applied by using the sol-gel technique or by other methods e.g. vacuum deposition.
The metal oxide layer is preferably applied by a sol-gel technique, by either a dip coating or spin coating. Each layer is preferably about one quarter-wavelength thick.
The refractive index of the first layer is lower than that of the substrate, and the second layer has lower refractive index than the first layer. This dependence minimizes reflection of the coating over a broad wavelength range.
CA 2230552 1998-02-25 1998-02-25 Wide-band two layer antireflection coating for optical surfaces Expired - Fee Related CA2230552C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2230552 CA2230552C (en) 1998-02-25 1998-02-25 Wide-band two layer antireflection coating for optical surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2230552 CA2230552C (en) 1998-02-25 1998-02-25 Wide-band two layer antireflection coating for optical surfaces

Publications (2)

Publication Number Publication Date
CA2230552A1 true CA2230552A1 (en) 1999-08-25
CA2230552C CA2230552C (en) 2002-12-31

Family

ID=4162158

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2230552 Expired - Fee Related CA2230552C (en) 1998-02-25 1998-02-25 Wide-band two layer antireflection coating for optical surfaces

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CA (1) CA2230552C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1430333A1 (en) * 2001-09-24 2004-06-23 Bushnell Corporation Lens coating to reduce external fogging of scope lenses
CN104536064A (en) * 2015-01-08 2015-04-22 中国科学院国家天文台南京天文光学技术研究所 Combination manufacturing method for optical ultra-wideband anti-reflection film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1430333A1 (en) * 2001-09-24 2004-06-23 Bushnell Corporation Lens coating to reduce external fogging of scope lenses
EP1430333A4 (en) * 2001-09-24 2009-11-04 Bushnell Corp Lens coating to reduce external fogging of scope lenses
CN104536064A (en) * 2015-01-08 2015-04-22 中国科学院国家天文台南京天文光学技术研究所 Combination manufacturing method for optical ultra-wideband anti-reflection film

Also Published As

Publication number Publication date
CA2230552C (en) 2002-12-31

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