White light illumination system with narrow band green phosphor and multiple-wavelength excitation
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United States of America Patent
Stats
-
Oct 25, 2016
Issued Date -
N/A
app pub date -
May 29, 2014
filing date -
Mar 7, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A white light illumination system may comprise: a phosphor package; a first radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 250 nm to about 410 nm; and a second radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 410 nm to about 540 nm; wherein the phosphor package is configured to emit photoluminescence in wavelengths ranging from about 440 nm to about 700 nm upon co-excitation from the first and second radiation sources, and wherein the phosphor package comprises at least one narrow band green phosphor with a photoluminescence peak with a full width at half maximum of less than 60 nm, and wherein the narrow band green phosphor is configured to emit photoluminescence in wavelengths ranging from about 500 nm to about 550 nm.
First Claim
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International Classification(s)
- 2014 Application Filing Year
- C09K Class
- 2473 Applications Filed
- 1988 Patents Issued To-Date
- 80.39 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- C09K Class
- 21.01 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 25, 2028 |
