US5202938A
Expired / Lapsed
US
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Laminated waveguiding polarizer utilizing polymeric birefringent cladding
Assignee: Corning Inc
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Filing: 1991-11-25
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Granted: 1993-04-13
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Expires: 2011-11-25
Abstract
Abstract A waveguiding polarizer utilizing a birefringent polymer film cladding layer is disclosed and claimed. The cladding layer may be a spin-coated polyimide, polyarylate, polyaramide or like polymer. Core and cladding layers are selected so that waveguiding conditions are achieved for light of predetermined polarity, for example, a transverse magnetic mode only.
Inventors
- 👤 Hong-Tai Man
- 👤 Joseph Teja, Jr.
- 👤 Kazutaka Oba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:35
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/126
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
A laminated waveguiding polarizer for emitting linearly polarized light upon irradiation with a light beam of arbitrary polarization comprising in combination a waveguide core layer which is substantially optically transparent adjacent a birefringent polymer film cladding layer, the refractive indices of said core layer and said cladding layer being selected so that the layers of the polarizer will cooperate to selectively guide light of a predetermined linear polarization and extinguish polarization components orthagonal thereto wherein said core layer is formed of a polymer having sidechains with a dipole moment such that the core material changes its refractive properties upon poling in an electric field at the vicinity of the glass transition temperature of the polymer.
Claim 2
Dependent Claim
115 words
A laminated waveguiding polarizer for emitting linearly polarized light upon irradiation with a light beam of arbitrary polarization comprising in combination a waveguide core layer which is substantially optically transparent adjacent a birefringent polymer film cladding layer, the refractive indices of said core layer and said cladding layer being selected so that the layers of the polarizer will cooperate to selectively guide light of a predetermined linear polarization and extinguish polarization components orthagonal thereto wherein said core layer is formed of a polymer having sidechains with a dipole moment such that the core material changes its refractive properties upon poling in an electric field at the vicinity of the glass transition temperature of the polymer.
Claim 3
Dependent Claim
25 words
The polarizer according to claim 1, wherein the polarizer selectively guides light linearly polarized in a direction perpendicular to the birefringent cladding layer film surface.
Claim 4
Dependent Claim
25 words
The polarizer according to claim 1, wherein the polarizer selectively guides light linearly polarized in a direction parallel to the birefringent cladding layer film surface.
Claim 5
Dependent Claim
25 words
The polarizer according to claim 1, wherein the birefringent cladding layer is produced by spin coating a polymer solution onto the surface of a substrate.
Claim 6
Dependent Claim
17 words
The polarizer according to claim 4, wherein the birefringent cladding layer is formed from an aromatic polymer.
Claim 7
Dependent Claim
17 words
The polarizer according to claim 1, wherein the birefringent cladding layer is formed of an aromatic polymer.
Claim 8
Dependent Claim
26 words
The polarizer according to claim 6, wherein the birefringent cladding layer is formed from a polymer selected from the group consisting of aromatic polyimides and polyarylates.
Claim 9
Dependent Claim
35 words
The polarizer according to claim i, wherein the birefringent cladding layer is formed from a polymer selected from the group consisting of: aromatic polyamides, polyamide-imides, polybenzimidazoles, polybenzoxazoles, aromatic polyesters, polyetherimides, polyetherketones, polyethersulfones, polyimidesulfones, and polysulfones.
Claim 10
Dependent Claim
17 words
The polarizer according to claim 1, wherein the sidechains of said core layer polymer are nitroazobenzene sidechains.
Claim 11
Dependent Claim
17 words
The polarizer according to claim 1, wherein the sidechains of said core layer polymer are nitrostilbene sidechains.
Claim 12
Dependent Claim
20 words
The polarizer according to claim 1, wherein the sidechains of said core layer polymer include a conjugated .sup.[ electron system.
Claim 13
Dependent Claim
18 words
The polarizer according to claim 1, wherein said birefringent film exhibits a birefringence of at least about 0.005.
Claim 14
Dependent Claim
18 words
The polarizer according to claim 1, wherein said birefringent film exhibits a birefringence of at least about 0.0075.
Claim 15
Dependent Claim
18 words
The polarizer according to claim 1, wherein said birefringent film exhibits a birefringence of at least about 0.01.
References Cited (Backward Citations)
US4384107A
Cited
US4711530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-12 | 1996-10-12 | 1997-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-12 | 2000-10-12 | 2001-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-12 | 2004-10-12 | 2005-04-13 | $7700.00 | Window Closed / Lapsed |