CN101109823A - LED lens - Google Patents
LED lens Download PDFInfo
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- CN101109823A CN101109823A CNA2007100292480A CN200710029248A CN101109823A CN 101109823 A CN101109823 A CN 101109823A CN A2007100292480 A CNA2007100292480 A CN A2007100292480A CN 200710029248 A CN200710029248 A CN 200710029248A CN 101109823 A CN101109823 A CN 101109823A
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- lens
- led
- silica gel
- led lens
- organic
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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
The present invention relates to a kind of organic silica gel material, relate to a kind of organic silica gel that is used to make high-power LED lens specifically.
Background technology
21 century, energy-conserving and environment-protective are all advocated in countries in the world, outside lighting field also is not precluded within.The LED of low-power consumption is as light source, have low in energy consumption than conventional light source (incandescent lamp, halogen tungsten lamp), save the advantage of the energy, even 1W, 3W, 5W great power LED are compared with the conventional light source (incandescent lamp, halogen tungsten lamp) of same watt level, the light of LED is well-illuminated all well-illuminated much bigger than the light of conventional light source.The advantage that LED has mainly contains: energy-saving and environmental protection, life-span long (can reach 100,000 hours in theory, be 25 times of incandescent lamp), fast, decoration (having 160,000 kinds of change color), easy maintenance etc. by force of reaction time.
At present, the transparent thermoplastics of the general employing of the low-power consumption LED packaging body of seeing on the market, such as: PMMA (polymethylmethacrylate) and PC (polycarbonate) etc. is the good raw material that LED is used as packing colloid, particularly PMMA (polymethylmethacrylate) is called as organic glass, the transparency is excellent, and have impact resistance strong, do not allow breakable advantage.As great power LED (comprising surface mounting high-power LED), it exists thermal value big, the phenomenon that temperature is high.And that PMMA (polymethylmethacrylate) and PC (polycarbonate) are depositing thermotolerance is corresponding with thermal linear expansion coefficient relatively poor, when reaching 150 ℃, and the molecular structure easy deformation of packing colloid, the inner flavescence of colloid.Surface mounting high-power LED in the past is that the application raw material is the lens that PMMA (polymethylmethacrylate) or PC (polycarbonate) make, and ready-made lens is vacuumized lens by organic A/B viscose glue to be attached on the LED pedestal that is provided with wafer again.Because of need melting down glue preheating, organic A/B viscose glue is baked to the effect that just can reach viscosity curing about 250 ℃, and LED pedestal and lens are to finish bonding between the two in the oven, be easy to make the lens inner structure to change when melting down, during the two the bonding cooling of LED pedestal and lens, because of the thermal linear expansion coefficient of viscose glue and lens inconsistent, LED whole interior structure is often led, lens and the LED loose contact that is provided with wafer base, influence light effect, more defective products can appear in the product of working it out like this.Because of great power LED thermal value height, heating is cold with chance repeatedly, uses repeatedly for a long time, and whole structure is changed.
Summary of the invention
The present invention proposes a kind of heat-resisting height, translucent effect is good, expansion coefficient is little a kind of organic silica gel material that is used to make high-power LED lens for the problem that solves above-mentioned existence.
In order to address the above problem technical scheme provided by the present invention be: a kind of LED lens, it is characterized in that described lens adopt silica gel to make, its chemical general formula is
Wherein, R is the organo-functional group with methyl polyethylene acyl group, is made of high molecular polymer, and 8≤n≤20 have the silicones of the polysiloxane of cagelike structure as principal ingredient in the above structural unit.
The span of described above-mentioned general formula n is: 10≤n≤15.
This organic siliconresin is applied in when using on the high-power LED lens as raw material, and it has heat-resisting height, light transmission is strong, expansion coefficient is little, the product percent of pass advantages of higher.
Embodiment
Embodiments of the invention are described below, and in addition, the silicones that is used for following embodiment is the high-power LED lens that manufactures by following method.
Mix two cyclopentyl diacrylates of the cage modle silicones that has the methyl polyethylene acyl group on whole silicon atoms of 20 weight portions, 60 weight portions, as 2.0 weight portion 1-hydroxyl ring ethyl benzophenones of Photoepolymerizationinitiater initiater, make transparent organosilicon resin composition.
Organic siliconresin with liquid clear injects in the mould notes machine earlier, melts down by 250 ℃ of left and right sides high temperature, and cooled and solidified forms lens shape.The LED pedestal and the organic silica gel lens that will be provided with wafer again are superimposed, and preheating is also joined glue, take out the LED pedestal that is provided with wafer and the air in gap, the superimposed place of organic silica gel lens, make it to reach vacuum state.Heating is melted down to 250 ℃ of left and right sides high temperature, and cooling can make the LED pedestal and the organic silica gel lens that are provided with wafer synthesize one fully again, reaches heat-resisting height, good, the little packaging effect of expansion coefficient of translucent effect.
Claims (2)
1. LED lens is characterized in that: described lens adopt silica gel to make, and its chemical general formula is
Wherein, R is the organo-functional group with methyl polyethylene acyl group, is made of high molecular polymer, and 8≤n≤20 have the silicones of the polysiloxane of cagelike structure as principal ingredient in the above structural unit.
2. according to the described a kind of LED lens of claim 1, it is characterized in that: the span of described general formula n is: 10≤n≤15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100292480A CN101109823A (en) | 2007-07-18 | 2007-07-18 | LED lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100292480A CN101109823A (en) | 2007-07-18 | 2007-07-18 | LED lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101109823A true CN101109823A (en) | 2008-01-23 |
Family
ID=39041974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100292480A Pending CN101109823A (en) | 2007-07-18 | 2007-07-18 | LED lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101109823A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064241A (en) * | 2010-10-13 | 2011-05-18 | 上海衡世光电科技有限公司 | Lens-free LED lamp and encapsulation method thereof |
| CN102532900A (en) * | 2010-12-20 | 2012-07-04 | 常州化学研究所 | Organosilicon lens material for power type light-emitting diode (LED) packaging |
-
2007
- 2007-07-18 CN CNA2007100292480A patent/CN101109823A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064241A (en) * | 2010-10-13 | 2011-05-18 | 上海衡世光电科技有限公司 | Lens-free LED lamp and encapsulation method thereof |
| CN102532900A (en) * | 2010-12-20 | 2012-07-04 | 常州化学研究所 | Organosilicon lens material for power type light-emitting diode (LED) packaging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080123 |