US5229208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin molded body for optical parts
Assignee: Fujitsu Ltd
•
Filing: 1991-12-02
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Granted: 1993-07-20
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Expires: 2011-12-02
Abstract
Abstract The present invention provides a resin molded body for optical parts, and comprises a solid solution of a polycarbonate and a polyester carbonate. In the resin molded body of the present invention, when the amount incorporated of the polyester carbonate is increased, the light transmission loss is increased, but the distortion temperature is considerably raised and a high heat resistance is obtained.
Inventors
- 👤 Akira Tanaka
- 👤 Takehisa Takoshima
- 👤 Shinpei Nagatani
- 👤 Hisashi Sawada
- 👤 Eietsu Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:24
CPC Classifications
C; C08; C08L; C08L69/00; C08L69/005; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
A plastic optical fiber comprising: a core formed of a PC/PEC solid solution having a PEC concentration of 30 to 50% by weight, said PC/PEC solid solution being characterized by a heat distortion temperature of at least 150° C. and a transmission loss of less than 3 dB/m; and a cladding material on said core, said cladding material comprising a PMP resin or a PMMA/PVDF 2 solid solution.
Claim 2
Dependent Claim
68 words
A plastic optical fiber comprising: a core formed of a PC/PEC solid solution having a PEC concentration of 30 to 50% by weight, said PC/PEC solid solution being characterized by a heat distortion temperature of at least 150° C. and a transmission loss of less than 3 dB/m; and a cladding material on said core, said cladding material comprising a PMP resin or a PMMA/PVDF 2 solid solution.
Claim 3
Dependent Claim
24 words
A plastic optical fiber as set forth in claim 1, wherein said PMMA/PVDF 2 solid solution includes at least 80% by weight of PMMA.
Claim 4
Dependent Claim
26 words
A plastic optical fiber as set forth in claim 1, wherein said PMMA/PVDF 2 solid solution includes at least 62% by weight of PVDF 2 .
Claim 5
Dependent Claim
22 words
A plastic optical fiber as set forth in claim 1, wherein said PC/PEC solid solution contains an organic fluorescent dye incorporated therein.
Claim 6
Dependent Claim
20 words
A plastic optical fiber as set forth in claim 4, wherein said dye comprises a perylene or naphthalimide type dye.
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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) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |