METHOD FOR PRODUCING A LOW TEMPERATURE GLASS PHOSPHOR LENS AND A LENS PRODUCED BY THE SAME
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United States of America Patent
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Issued Date -
May 19, 2016
app pub date -
Nov 14, 2014
filing date -
Nov 14, 2014
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Abstract
A method for producing a low temperature glass phosphor lens includes dry mixing a glass material and fluorescent powder to form a powdery or particulate mixture. The mixture is grinded to a diameter of 15-20 μm, obtaining uniformly mixed glass fluorescent powder. The glass fluorescent powder is hot pressed into a glass phosphor at a temperature of 500-1000° C. The glass phosphor is grinded and polished into a lens. The fluorescent powder can be a fluorescent material selected from the group consisting of yttrium aluminum garnet, nitride, and silicate. The glass material can be selected from the group consisting of a silicate system, a phosphor system, a borate system, and a tellurate system. The glass phosphor includes characteristics of both of glass and fluorescence. The glass phosphor can keep efficiency under the high heat generated by the chip of an LED.
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