CN102255032A - Light distribution structure of high-power LED (light-emitting diode) - Google Patents
Light distribution structure of high-power LED (light-emitting diode) Download PDFInfo
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- CN102255032A CN102255032A CN2011101881614A CN201110188161A CN102255032A CN 102255032 A CN102255032 A CN 102255032A CN 2011101881614 A CN2011101881614 A CN 2011101881614A CN 201110188161 A CN201110188161 A CN 201110188161A CN 102255032 A CN102255032 A CN 102255032A
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Abstract
The invention belongs to the field of LED (light-emitting diode) encapsulation and discloses a light distribution structure of a high-power LED (light-emitting diode). The light distribution structure is characterized in that a transparent packing layer is arranged between an LED encapsulation lens and a light distribution lens; and one side of the transparent packing layer is connected with the LED encapsulation lens and the other side of the transparent packing layer is connected with the light distribution lens, and the gap between the LED encapsulation lens and the light distribution lens is packed completely by the transparent packing layer. The light distribution structure of the high-power LED can be used to reduce interface losses of light from the LED greatly and increase the transmissivity of the light.
Description
Technical field
The present invention relates to the LED encapsulation field, specifically, relate to a kind of light distribution structure of great power LED.
Background technology
(Light Emitting Diode, translator of Chinese: light-emitting diode) constantly be applied in lighting field, to the encapsulation of great power LED, particularly the design to the great power LED light distribution structure becomes more and more important along with great power LED.In use, usually be packaged with lens at next-door neighbour's LED light-emitting area, common have a hemisphere, and what have is plate shaped or other shape, is commonly referred to as " LED package lens "; Outside the LED package lens, add the light-distribution lens of a hard more separately, be commonly referred to as " light-distribution lens ".
As shown in Figure 1, be great power LED light distribution structure of the prior art.Wherein 1 is the LED package lens, and 2 is light-distribution lens, and 4 for installing base plate.
Because the LED package lens installs when encapsulation, and light-distribution lens adds up when using separately, in order to guarantee the compatibility of technology, usually when the design light-distribution lens, between light-distribution lens inner surface and LED package lens outer surface, leave certain air gap, shown in 3 among Fig. 1.Because the refractive index of air and the refractive index of LED package lens, still compare with the refractive index of light-distribution lens, all differ too many, cause the outgoing and bigger interface loss is all arranged from the LED package lens of light that the LED light-emitting area sends when light-distribution lens incident.
Summary of the invention
The objective of the invention is to solve the light that has the air gap between the LED package lens and light-distribution lens in the prior art and cause the LED light-emitting area to send and have the problem of bigger interface loss, and a kind of light distribution structure of great power LED is provided.
The object of the present invention is achieved like this:
A kind of light distribution structure of great power LED is characterized in that, between LED package lens and light-distribution lens, also is provided with transparent packed layer; The one side of described transparent packed layer connects described LED package lens, and another side connects described light-distribution lens, has filled the space between described LED package lens and the described light-distribution lens completely.
Described transparent packed layer is the transparent flexible solid.
Described transparent flexible solid is a transparent silica gel.
Described transparent silica gel and LED package lens have identical material.
Described transparent packed layer is a transparency liquid.
Described transparency liquid is the transparency liquid organic substance.
Described transparency liquid is a water.
Implement the light distribution structure of great power LED of the present invention, reduced light and reached the interface loss that transmits between the additional hard light-distribution lens, increased the transmitance of light in the LED package lens.
Description of drawings
Fig. 1 is the light distribution structure of great power LED of the prior art.
Fig. 2 is the light distribution structure of great power LED of the present invention.
Embodiment
Below, realization, functional characteristics and advantage with regard to the object of the invention are described further with accompanying drawing in conjunction with the embodiments.
As everyone knows, light is when interface outgoing or incident, and the medium refraction index on both sides, interface is approaching more, and then interface loss will be more little.Therefore, between LED package lens and light-distribution lens, fill and the close transparent material of above-mentioned two index of refraction in lens, eliminate above-mentioned air gap, will significantly reduce the interface loss of light, increase the transmitance of light.
In embodiment, in order to ensure eliminating the air gap fully, and do not damage the original shape and size parameter of two lens, can use liquid filling material, perhaps use the soft solid of coming, such as silica gel etc. by liquid curing.
Please refer to Fig. 2, embodiment first of the present invention is as follows:
Comprise among Fig. 2:
The one side of transparent packed layer 3 connects described LED package lens 1, and another side connects described light-distribution lens 2, has filled the space between described LED package lens 1 and the described light-distribution lens 2 completely.
Wherein 1 material is a high refractive index transparent silica gel, and refractive index is 1.49; 2 material is a polymethyl methacrylate, and refractive index is 1.49; 3 is high refractive index transparent silica gel, and refractive index is 1.49.
Because above-mentioned three's refractive index is identical, the then interface of light from 1 to 3 and 3 to 2 interface, its interface loss is approximately equal to 0.
On the other hand, if between 1 and 2, do not use packing material, and keep the air gap, because the refractive index of air is approximately equal to 1, then light is about 4% from 1 interface loss to air, is about 4% from the interface loss of air to 2, and total losses are: 1-(1-4%) * (1-4%)=7.84%.
As seen, after using light distribution structure of the present invention, the interface loss of light will reduce greatly, and promptly the transmitance of light has increased.
When described transparent packed layer is selected transparency liquid for use, during such as transparency liquid organic substance or water, because the refractive index of transparency liquid organic substance or water is greater than the refractive index 1 of air, near the refractive index of the material of the material of LED package lens 1 and light-distribution lens 2, the light interface loss at the interface of light from 1 to 3 and 3 to 2 interface also will be better than the light distribution structure of no transparent packed layer the prior art.
In a word, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, only with reference to preferred embodiment the present invention is had been described in detail.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. the light distribution structure of a great power LED is characterized in that, between LED package lens and light-distribution lens, also is provided with transparent packed layer; The one side of described transparent packed layer connects described LED package lens, and another side connects described light-distribution lens, has filled the space between described LED package lens and the described light-distribution lens completely.
2. the light distribution structure of great power LED according to claim 1 is characterized in that, described transparent packed layer is the transparent flexible solid.
3. the light distribution structure of great power LED according to claim 2 is characterized in that, described transparent flexible solid is a transparent silica gel.
4. the light distribution structure of great power LED according to claim 3 is characterized in that, described transparent silica gel and LED package lens have identical material.
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5. the light distribution structure of great power LED according to claim 1 is characterized in that, described transparent packed layer is a transparency liquid.
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6. the light distribution structure of great power LED according to claim 5 is characterized in that, described transparency liquid is the transparency liquid organic substance.
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7. the light distribution structure of great power LED according to claim 5 is characterized in that, described transparency liquid is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101881614A CN102255032A (en) | 2011-07-06 | 2011-07-06 | Light distribution structure of high-power LED (light-emitting diode) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101881614A CN102255032A (en) | 2011-07-06 | 2011-07-06 | Light distribution structure of high-power LED (light-emitting diode) |
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| Publication Number | Publication Date |
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| CN102255032A true CN102255032A (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101881614A Pending CN102255032A (en) | 2011-07-06 | 2011-07-06 | Light distribution structure of high-power LED (light-emitting diode) |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536686A (en) * | 2003-04-11 | 2004-10-13 | 威尔顿技术公司 | High power luminous diode |
| CN1787242A (en) * | 2004-12-10 | 2006-06-14 | 北京大学 | Method for packing inverted mounting LED chip |
| JP2007103926A (en) * | 2005-09-09 | 2007-04-19 | Matsushita Electric Works Ltd | Led illumination device |
| CN101485004A (en) * | 2006-07-06 | 2009-07-15 | Tir科技公司 | Lighting device package |
| CN201282151Y (en) * | 2008-04-30 | 2009-07-29 | 大连路明发光科技股份有限公司 | High power light-emitting diode device |
| CN101872829A (en) * | 2010-06-21 | 2010-10-27 | 深圳雷曼光电科技股份有限公司 | White light LED (Light Emitting Diode) with high luminous efficiency and encapsulation method thereof |
-
2011
- 2011-07-06 CN CN2011101881614A patent/CN102255032A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536686A (en) * | 2003-04-11 | 2004-10-13 | 威尔顿技术公司 | High power luminous diode |
| CN1787242A (en) * | 2004-12-10 | 2006-06-14 | 北京大学 | Method for packing inverted mounting LED chip |
| JP2007103926A (en) * | 2005-09-09 | 2007-04-19 | Matsushita Electric Works Ltd | Led illumination device |
| CN101485004A (en) * | 2006-07-06 | 2009-07-15 | Tir科技公司 | Lighting device package |
| CN201282151Y (en) * | 2008-04-30 | 2009-07-29 | 大连路明发光科技股份有限公司 | High power light-emitting diode device |
| CN101872829A (en) * | 2010-06-21 | 2010-10-27 | 深圳雷曼光电科技股份有限公司 | White light LED (Light Emitting Diode) with high luminous efficiency and encapsulation method thereof |
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Application publication date: 20111123 |