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Have
a high lumen retention (Transmittance, light transmittance,
transmittance, expressed in units as a percentage), the first step is
packaging material, the last LED is the most commonly used epoxy resin
(epoxy), epoxy resin, but after aging gradual yellowing (due to
"benzene ring" component), thereby affecting bright colors, especially
when the wavelength of the lower the aging more rapidly, especially the
part of the WLED to use near ultraviolet (Near ultraviolet) light with
other wavelength than visible light, then lower aging more quickly.
The new proposal is to use silicone resin (silicone) change for the
epoxy resin, such as the U.S. Lumileds company's Luxeon series of LED
that is switched to silicone rubber seal. |
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