Patent US6017681A successfully refreshed from Google Patents.
US6017681A
Expired / Lapsed
US
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Method of coupling optical parts and method of forming a mirror
Assignee: Fujitsu Ltd
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Filing: 1995-11-07
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Granted: 2000-01-25
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Expires: 2015-11-07
Abstract
Abstract A method of coupling optical parts including bonding the optical coupling faces of two optical waveguides by butting and fusing them. Also, a method for forming a refractive-index distribution having the focusing lens effect by setting the interval between the optical coupling faces of two optical parts to 0.1 mm or more, feeding a refractive-index imaging material also serving as an adhesive into the gap between the faces, and applying light to the refractive-index imaging material from the optical coupling face of at least one of the optical parts.
Inventors
- 👤 Koji Tsukamoto
- 👤 Takeshi Ishitsuka
- 👤 Tetsuzo Yoshimura
- 👤 Katsusada Motoyoshi
- 👤 Yasuhiro Yoneda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:05
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/255; G02B6/2551; G02B6/26; G02B6/262; G02B6/4201; G02B6/4219; G02B6/4228; G02B6/10; G02B6/12; G02B2006/12083; G02B2006/12104; G02B6/4232
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
A method of coupling optical parts, comprising the steps of: applying a photosensitive material to respective edges of a first and second optical parts; irradiating said photosensitive material with radiation for sensitization from the inside of at least one of said first and second optical parts; removing the portion in said photosensitive material that has not been irradiated with a light by a solvent, and also having the portion irradiated with a light remaining to form a waveguide at each said edge of said first and second optical parts; and heating said waveguides formed on respective edges of said first and second optical parts so as to melt and fuse said waveguides.
Claim 2
Independent Claim
112 words
A method of coupling optical parts, comprising the steps of: applying a photosensitive material to respective edges of a first and second optical parts; irradiating said photosensitive material with radiation for sensitization from the inside of at least one of said first and second optical parts; removing the portion in said photosensitive material that has not been irradiated with a light by a solvent, and also having the portion irradiated with a light remaining to form a waveguide at each said edge of said first and second optical parts; and heating said waveguides formed on respective edges of said first and second optical parts so as to melt and fuse said waveguides.
Claim 3
Dependent Claim
42 words
The method of coupling optical parts according to claim 1, further comprising a process of forming a layer of a material for improving wettability with said photosensitive material on respective edges of said two optical parts before said photosensitive material is applied.
Claim 4
Dependent Claim
34 words
The method of coupling optical parts according to claim 2, wherein said photosensitive material is a photopolymerizable composition, and the material for improving said wettability has a higher fusing temperature than the photosensitive material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-24 | 2003-07-26 | 2004-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-24 | 2007-07-26 | 2008-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-24 | 2011-07-26 | 2012-01-25 | $7700.00 | Window Closed / Lapsed |