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Optical fiber type part for optical systems

Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1995-07-14
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Granted: 1996-11-12
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Expires: 2015-07-14
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Abstract

Abstract An optical fiber type part for optical systems which comprises a smaller number of parts, whose production does not require a long time and which has stable optical characteristics is herein provided. The optical fiber type part for optical systems comprises an optical element 9, first and second lenses and each arranged on the light-incident or light-outgoing side of the optical part and first and second optical fibers and each arranged on the light-incident side of the first lens and the light-outgoing side of the second lens respectively and is characterized in that the end faces of the first and second optical fibers which are opposed to one another are inclined at an angle and subjected to abrasive finishing and that anti-reflection films are formed on these end faces.

Inventors

  • 👤 Toshiaki Watanabe
  • 👤 Toshihiko Ryuo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 16:34
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/27; G02B6/2746; G02B6/32; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4207; G02B6/4208

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 118 words
An optical fiber part for optical systems which comprises an optical element, first and second lenses each arranged on the light-incident or light-outgoing side of the optical element and first and second optical fibers each arranged on the light-incident side of the first lens and the light-outgoing side of the second lens respectively, wherein the end faces of the first and second optical fibers which are opposed to one another are inclined at an angle and have abrasive finish and anti-reflection film on each end face, wherein the anti-reflection film comprising an inner layer and a surfaced layer, and wherein the inner layer is formed from TiO 2 and the surface layer is formed from SiO 2 .
Claim 2
Dependent Claim 118 words
An optical fiber part for optical systems which comprises an optical element, first and second lenses each arranged on the light-incident or light-outgoing side of the optical element and first and second optical fibers each arranged on the light-incident side of the first lens and the light-outgoing side of the second lens respectively, wherein the end faces of the first and second optical fibers which are opposed to one another are inclined at an angle and have abrasive finish and anti-reflection film on each end face, wherein the anti-reflection film comprising an inner layer and a surfaced layer, and wherein the inner layer is formed from TiO 2 and the surface layer is formed from SiO 2 .
Claim 3
Dependent Claim 24 words
The optical fiber type part for optical systems according to claim 1 wherein the optical element is an optical isolator or an optical circulator.
Claim 4
Dependent Claim 25 words
The optical fiber part of claim 1 wherein the end faces of the first and second optical fibers are inclined to the optical axis thereof.
Claim 5
Dependent Claim 15 words
The optical fiber part of claim 1 wherein the optical element is an optical isolator.
Claim 6
Dependent Claim 15 words
The optical fiber part of claim 1 wherein the optical element is an optical circulator.

References Cited (Backward Citations)

US5040863A Cited
US5195155A Cited
US5208876A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-11-12 2000-05-13 2000-11-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-11-12 2004-05-13 2004-11-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-11-12 2008-05-13 2008-11-12 $7700.00 Window Closed / Lapsed

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