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LED lens

A LED lens and lens technology, applied in lighting and heating equipment, electrical components, circuits, etc., can solve the problems of high power LED heat generation, poor LED contact, and affecting light output effects, etc.

Inactive Publication Date: 2008-01-23
HE SHAN LIDE ELECTRONICS ENTERPRISE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the organic A / B adhesive needs to be preheated and baked to about 250°C to achieve the effect of viscous curing, while the LED base and lens are bonded in the oven, it is very fast when returning to the oven. It is easy to change the internal structure of the lens. When the LED base and the lens are bonded and cooled, the linear thermal expansion coefficients of the adhesive and the lens are inconsistent, which will also cause the overall internal structure of the LED to change. The poor contact of the LED will affect the light output effect, and the products produced in this way will have more defective products
Due to the high heat generation of high-power LEDs, repeated heating and cooling, repeated use for a long time, will also change the overall structure

Method used

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Embodiment Construction

[0010] Embodiments of the present invention are described below, and in addition, the silicone resin used in the embodiments described below is a high-power LED lens manufactured by the method described below.

[0011] Mix 20 parts by weight of a cage-type silicone resin having methylpolyvinyl groups on all silicon atoms, 60 parts by weight of dicyclopentyl diacrylate, and 2.0 parts by weight of 1-hydroxycycloethylbenzophenone as a photopolymerization initiator , to obtain a transparent silicone resin composition.

[0012] Firstly, liquid transparent silicone resin is injected into the injection molding machine, and it is returned to the furnace at a high temperature of about 250°C, cooled and solidified to form a lens shape. Then superimpose the LED base with the chip on the silicone lens, preheat and mix the glue, and remove the air in the gap between the LED base with the chip and the silicone lens to make it a vacuum state. Heating back to the furnace to a high temperatur...

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Abstract

The invention relates to an organic silica gel material, in particular to a LED lens, which is characterized in that the lens is made of silica gel, the chemical formula is as shown, wherein, R is an organic radical having methyl polyethylene acyl and comprises high polymer, n is equal or more than 8 but less or equal to 20. The polysiloxane in cage structure in the structural unit is used as main component, silicon resin. The material is applicable for producing high-power LED lens, has such advantages as the high heat resistance, the strong light transitivity, the small expansion coefficient and the high acceptability rate.

Description

technical field [0001] The invention relates to an organic silica gel material, in particular to an organic silica gel used for manufacturing high-power LED lenses. Background technique [0002] In the 21st century, all countries in the world advocate energy conservation and environmental protection, and the lighting field is not excluded. As a light source, low-power LEDs have the advantages of low power consumption and energy saving compared with traditional light sources (incandescent lamps, tungsten halogen lamps). , Halogen tungsten lamps), compared with the luminous flux of LEDs, the luminous flux of LEDs is much larger than that of traditional light sources. The main advantages of LEDs are: energy saving, environmental protection, long life (theoretically up to 100,000 hours, 25 times that of incandescent lamps), fast response time, strong decoration (with 160,000 color changes), easy maintenance, etc. [0003] At present, the low-power LED packages seen on the mark...

Claims

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Application Information

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IPC IPC(8): G02B1/04F21V5/04H01L33/00H01L33/58
Inventor 樊邦弘
Owner HE SHAN LIDE ELECTRONICS ENTERPRISE CO LTD
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