US3917384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High resolution lenses for optical waveguides
Assignee: International Business Machines Corp
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Filing: 1973-09-11
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Granted: 1975-11-04
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Expires: 1993-09-11
Abstract
Abstract A spherical depression lens is formed in a spherical depression in the substrate of the waveguide and a waveguide index lens is formed over the depression lens whereby the combination of the two lenses provides a high resolution waveguide lens for optical waveguides.
Inventors
- 👤 John S Harper
- 👤 Eric G Lean
- 👤 Eberhard A Spiller
- 👤 Janusz S Wilczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/122; G02B6/124; G02B6/1245
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
An optical waveguide device comprising: an optical waveguide substrate having a first index of refraction and having a spherical depression in one surface thereof, an optical waveguide having a second, higher index of refraction disposed on said substrate including said depression to form a spherical depression lens, and a layer disposed over said depression lens and having an index of refraction greater than said second index of refraction whereby a combination spherical depression-waveguide index lens provides compensation for lens aberrations.
Claim 2
Dependent Claim
80 words
An optical waveguide device comprising: an optical waveguide substrate having a first index of refraction and having a spherical depression in one surface thereof, an optical waveguide having a second, higher index of refraction disposed on said substrate including said depression to form a spherical depression lens, and a layer disposed over said depression lens and having an index of refraction greater than said second index of refraction whereby a combination spherical depression-waveguide index lens provides compensation for lens aberrations.
Claim 3
Independent Claim
81 words
A method of making an optical waveguide device including a high resolution lens comprising the steps of: providing a substrate having a given index of refraction and having a spherical depression at the lens location, forming a uniform thickness waveguide layer on said substrate, including said depression, said waveguide layer having an index of refraction higher than that of said substrate, and forming a layer of material having a still higher index of refraction on said waveguide layer at said depression.
Claim 4
Independent Claim
81 words
A method of making an optical waveguide device including a high resolution lens comprising the steps of: providing a substrate having a given index of refraction and having a spherical depression at the lens location, forming a uniform thickness waveguide layer on said substrate, including said depression, said waveguide layer having an index of refraction higher than that of said substrate, and forming a layer of material having a still higher index of refraction on said waveguide layer at said depression.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |