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White light lens of light-emitting diode and light-emitting diode composed of lens

A technology of light-emitting diodes and lenses, which is applied to optical elements, light sources, point light sources, etc. to change the spectral characteristics of emitted light, and can solve problems such as color differences in street lamps, affecting the performance of light-emitting diodes, and color differences in light-emitting diodes

Inactive Publication Date: 2010-02-10
SICHUAN JIUZHOU OPTOELECTRONIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Integrated light-emitting diodes are used in public lighting systems to obtain high brightness. The integrated use of multiple light-emitting diodes will cause the internal temperature of the unit to rise. Because the phosphor coating is located on the surface layer of the chip 5 in the existing light-emitting diodes, it makes the Phosphor powder will be carbonized during long-term use of diodes, which will affect the performance of light-emitting diodes
And multiple light-emitting diodes are integrated together, there is easy color difference between each light-emitting diode, or there is color difference between each street lamp

Method used

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  • White light lens of light-emitting diode and light-emitting diode composed of lens
  • White light lens of light-emitting diode and light-emitting diode composed of lens
  • White light lens of light-emitting diode and light-emitting diode composed of lens

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Embodiment 1

[0033] like Figure 2-4 As shown, the light-emitting diode white light lens in this embodiment is formed by lens substrate polycarbonate and phosphor powder with a wavelength of 580 nm as raw materials. The mass ratio of the lens substrate to phosphor powder is polycarbonate: Phosphor powder = 5:1. The light-emitting diode white light lens of this embodiment is mixed with polycarbonate and fluorescent powder in the above ratio, and injected at a temperature of about 50°C to form a lens with a semicircular cross-section. Two small holes are symmetrically arranged on the edge of the lens. , when the filled silica gel 6 is injected, part of the filled silica gel 6 overflows from the small hole, and the connection between the lens 7 and the bracket 3 can be made more stable after curing.

[0034] The light-emitting diode composed of the lens of this embodiment is mainly composed of a chip 5, a heat-conducting copper column 1, an electrode line 2, a bracket 3, a gold wire 4, a len...

Embodiment 2

[0036] like Figure 2-4As shown, the light-emitting diode white light lens in this embodiment is made of lens substrate silica gel and phosphor powder with a wavelength of 580 nm as raw materials. The mass ratio of the lens substrate to phosphor powder is silica gel: phosphor powder=500 : 1. The light-emitting diode white light lens of this embodiment is formed by injection molding at a temperature of about 200° C. to form a semicircular cross-section after mixing the above-mentioned ratio of silica gel and fluorescent powder.

[0037] The light-emitting diode composed of the lens of this embodiment is mainly composed of a chip 5, a heat-conducting copper column 1, an electrode line 2, a bracket 3, a gold wire 4, a lens 7, and a silica gel 6. The heat-conducting copper column 1 is embedded in the electrode line 2 In the bracket 3, the chip 5 is fixed on the heat-conducting copper column 1 through silver glue, and the bracket 3 and the chip 5 are connected through the gold wir...

Embodiment 3

[0039] The light-emitting diode white light lens in this embodiment is molded from lens substrate polymethyl methacrylate and phosphor powder with a wavelength of 620 nanometers, and the mass ratio of the lens substrate to phosphor powder is polymethacrylic acid Methyl ester: phosphor = 4:1. The light-emitting diode white light lens of this embodiment is formed by injection molding at a temperature of 150° C. to 200° C. after mixing polycarbonate and phosphor in the above ratio to form a white light lens with a semicircular cross section.

[0040] The structure of the light-emitting diode composed of lenses applied in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention discloses a lens of a high-power light-emitting diode and a light-emitting diode composed of the lens, belonging to the technical field of photoelectric application. The white light lensof the light-emitting diode is formed by shaping the mixture of lens base material and fluorescent powder by injection-molding or die-casting or other techniques; the lens base material is any one ofpolycarbonate, polymethyl methacrylate, silica gel, Na2SiO3, CaSiO3, SiO2, Na2O-CaO-6SiO2; and the mass ratio of the lens base material and the fluorescent powder is equal to 0.1 to 1000:1. The application of the light-emitting diode of the lens lies in mixing the fluorescent powder and the lens base material and then forming instead of coating fluorescent powder resin on a chip surface layer; the fluorescent powder can be evenly distributed on the lens, the color difference of the light-emitting diode can be reduced obviously and the carbonification of heat to the fluorescent powder can be reduced.

Description

technical field [0001] The invention relates to the technical field of light-emitting diodes, in particular to a lens of a high-power light-emitting diode and a light-emitting diode composed of the lens. Background technique [0002] Light Emitting Diode (LED) is a light-emitting element made of semiconductor materials, which can convert electrical energy into light energy. It has the characteristics of power saving, energy saving, environmental protection, and long service life. The efficiency is 10 times higher than that of traditional incandescent lamps, and light-emitting diodes have been widely used in street lighting in the field of public lighting. [0003] The light-emitting diodes used in the field of public lighting are integrated light-emitting diodes, and the structure of each light-emitting diode is as follows figure 1 As shown, it is mainly composed of a chip 5, a heat-conducting copper pillar 1, an electrode circuit 2, a bracket 3, a gold wire 4, a phosphor r...

Claims

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Application Information

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IPC IPC(8): F21V5/04F21V9/10F21V19/00F21V23/00F21V29/00H01L33/00F21Y101/02
Inventor 任恒
Owner SICHUAN JIUZHOU OPTOELECTRONIC TECH CO LTD
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