Patent US5006729A successfully refreshed from Google Patents.
US5006729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for doubling the frequency of a light wave comprising a non-linear optical compound
Assignee: US Philips Corp
•
Filing: 1990-04-24
•
Granted: 1991-04-09
•
Expires: 2010-04-24
Abstract
Abstract Nonlinear optical compound, nonlinear optical medium, method of manufacturing a nonlinear optical medium and device for doubling the frequency of a light wave. The invention relates to a nonlinear optical medium and a device comprising such a nonlinear optical medium which can be suitably used to double the frequency of red light, while forming blue light. The nonlinear optical medium comprises a polymer matrix and nonlinear optical compounds which contain a substituted sulphone group as the electron-acceptor group.
Inventors
- 👤 Egbert W. Meijer
- 👤 Wolter ten Hoeve
- 👤 Sjef Nijhuis
- 👤 Gerardus L. J. A. Rikken
- 👤 Edsko E. Havinga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:30
CPC Classifications
C; C08; C08F; C08F212/00; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A device for doubling the frequency of a light wave, in which a fundamental red light wave is passed through a nonlinear optical medium, so as to form a second harmonic blue light wave, which nonlinear optical medium comprises a nonlinear optical compound, comprising an electron donor group an an electron acceptor group which are linked by a π-conjugated system, in which the electron acceptor group is a sulphone group containing a substituent selected from the group consisting of alkyl, hydroxyalkyl and alkyl(meth)acrylate moieties and in which the compound π-conjugated system is a biphenylene group.
Claim 2
Independent Claim
95 words
A device for doubling the frequency of a light wave, in which a fundamental red light wave is passed through a nonlinear optical medium, so as to form a second harmonic blue light wave, which nonlinear optical medium comprises a nonlinear optical compound, comprising an electron donor group an an electron acceptor group which are linked by a π-conjugated system, in which the electron acceptor group is a sulphone group containing a substituent selected from the group consisting of alkyl, hydroxyalkyl and alkyl(meth)acrylate moieties and in which the compound π-conjugated system is a biphenylene group.
Claim 3
Dependent Claim
30 words
A device according to claim 1, wherein the nonlinear optical medium comprises a polymer matrix, which contains the nonlinear optical compound, which compound is polarly ordered in the polymer matrix.
Claim 4
Dependent Claim
21 words
A device according to claim 2, wherein the nonlinear optical compound is bonded to the polymer matrix in a covalent manner.
Claim 5
Dependent Claim
13 words
A device according to claim 1, wherein the polymer matrix is a poly(meth)acrylate.
Claim 6
Dependent Claim
13 words
A device according to claim 2, wherein the polymer matrix is a poly(meth)acrylate.
References Cited (Backward Citations)
US4659177A
Cited
US4792208A
Cited
EP0313476A2
Cited
EP0313475A2
Cited
EP0313477A2
Cited
EP0313474A2
Cited
US4801670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |