US4359267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling a gradient index lens array
Assignee: Xerox Corp
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Filing: 1980-06-25
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Granted: 1982-11-16
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Expires: 2000-06-25
Abstract
Abstract A plurality of gradient index fibers are assembled into a lens array by first coating each fiber with a light absorbent medium to a desired thickness and then pressing the coated fibers into a final mold. The coating step permits greater inter-fiber distance to be effected for certain applications.
Inventors
- 👤 James J. Appel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:09
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A method of forming a gradient index lens array by joining together a plurality of gradient index optical fibers, each fiber separated from adjoining fibers by an inter-fiber spacing d', comprising the steps of: coating each of said fibers with a light absorbing material to a thickness Δd, curing said coating to full hardness and pressing said coated fibers into a mold of said light absorbing material until each coated fiber is separated by a distance d equal to d' minus 2 Δd.
Claim 2
Independent Claim
83 words
A method of forming a gradient index lens array by joining together a plurality of gradient index optical fibers, each fiber separated from adjoining fibers by an inter-fiber spacing d', comprising the steps of: coating each of said fibers with a light absorbing material to a thickness Δd, curing said coating to full hardness and pressing said coated fibers into a mold of said light absorbing material until each coated fiber is separated by a distance d equal to d' minus 2 Δd.
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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) | 1985-11-15 | 1986-05-17 | 1986-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-15 | 1990-05-17 | 1990-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-15 | 1994-05-17 | 1994-11-16 | $7700.00 | Window Closed / Lapsed |