US5042925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarization-sensitive beam splitter having a polarizing birefringent oriented polymer adhesive layer
Assignee: Nitto Denko Corp
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Filing: 1990-05-10
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Granted: 1991-08-27
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Expires: 2010-05-10
Abstract
Abstract In a polarization-sensitive beam splitter 10 having a polarization-separating layer 13 interposed between two transparent elements 11, 12, the two transparent elements consist of non-birefringent material and the polarization-separating layer is a polarizing birefringent oriented polymer adhesive layer. The polarization-separating layer is manufactured from a curable synthetic resin composition comprising liquid-crystalline monomers or oligomers, the molecules in the curable synthetic resin composition being oriented uniaxially after which the synthetic resin composition is cured.
Inventors
- 👤 Dirk J. Broer
- 👤 Adrianus J. S. M. De Vaan
- 👤 Jorg Brambring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:51
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B1/00; G02B1/08; G02B27/00; G02B27/28; G02B5/3016
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
22 words
A polarization-sensitive beam splitter comprising two transparent elements joined together, at mutually opposing surfaces, by a polarizing birefringent oriented polymer adhesive layer.
Claim 2
Dependent Claim
22 words
A polarization-sensitive beam splitter comprising two transparent elements joined together, at mutually opposing surfaces, by a polarizing birefringent oriented polymer adhesive layer.
Claim 3
Dependent Claim
21 words
A polarization-sensitive beam splitter as claimed in claim 1, wherein the polarizing birefringent adhesive layer is a uniaxially oriented polymer layer.
Claim 4
Dependent Claim
21 words
A polarization-sensitive beam splitter as claimed in claim 2, wherein the polymer layer is formed from a cured liquid-crystalline monomer composition.
Claim 5
Dependent Claim
26 words
A polarization-sensitive beam splitter as claimed in claim 3, wherein the polymer layer is formed from a polymeric network having nematic groups in the molecular chains.
Claim 6
Dependent Claim
25 words
A polarization-sensitive beam splitter as claimed in claim 3, wherein a polyimide layer is present between the polymer layer and each of the transparent elements.
References Cited (Backward Citations)
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US4560594A
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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) | 1994-08-26 | 1995-02-25 | 1995-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-26 | 1999-02-25 | 1999-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-26 | 2003-02-25 | 2003-08-27 | $7700.00 | Window Closed / Lapsed |