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High-performance LED lighting system based on optical thin film

A technology of LED lighting and optical film, applied in lighting devices, optical elements for changing the spectral characteristics of emitted light, lighting and heating equipment, etc. problems, to achieve the effect of reducing heat load, reducing chip temperature, and improving light extraction efficiency

Inactive Publication Date: 2014-10-22
LONGTENG LIGHTING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are problems such as energy loss of yellow light after blue light excites the phosphor, and the color rendering and color temperature cannot meet the lighting requirements.

Method used

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  • High-performance LED lighting system based on optical thin film

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Embodiment Construction

[0012] The present invention includes a lens 1, a lamp housing 2 and an LED chip 3 arranged in the lens 1 and the lamp housing 2; a cold mirror 4 is provided at the bottom of the LED chip 3, and a heat absorbing layer is arranged between the cold mirror 4 and the lamp housing 2 5. The heat absorbing layer 5 is in close contact with the heat dissipation fins 6 on the lamp housing 2; the lens 1 is provided with a multi-layer dichroic filter 7 of dielectric material.

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Abstract

The invention relates to a high-performance LED lighting system based on an optical thin film. The system comprises a lens, a lamp shell, and an LED chip which is arranged in the lens and the lamp shell. A cold mirror is arranged at the bottom of the LED chip. A heat absorbing layer is arranged between the cold mirror and the lamp shell. The heat absorbing layer closely contacts a radiating fin on the lamp shell. A multilayer different-colored filter which is made of a dielectric material is arranged outside the lens. The system provided by the invention has the following advantages: (1) a multilayer cold mirror which is made of a dielectric material is used to replace a metal aluminum film, thus visible spectral reflectance higher than that of the aluminum film is achieved, and the heat load of the chip is reduced and the temperature of the chip is lowered effectively through infrared heat radiation; and (2) due to the heat absorbing layer, heat through the cold mirror can be absorbed by the heat absorbing layer and sent out by the radiating fin, and thus the temperature in the lamp shell is not too high.

Description

technical field [0001] The invention relates to a high-performance LED lighting system based on an optical film. Background technique [0002] As we all know, LED chips radiate light energy in all directions, and even part of the light energy is radiated from the bottom surface of the chip. At present, in order to redirect and reflect this part of the light energy to the front surface of the LED chip, thereby improving the utilization rate of light energy, a common practice is to deposit a layer of metal thin film on the bottom surface of the LED chip. [0003] However, the reflective properties of this metal film (usually metal aluminum) in the visible spectrum range are not effective enough, but the ability to reflect infrared heat radiation spectrum is very effective. Therefore, the deficiency of the metal aluminum film will cause infrared heat radiation to return to the LED chip, increase the thermal load of the chip, and cause the chip to heat up. [0004] At the same...

Claims

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Application Information

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IPC IPC(8): H01L33/60H01L33/64
CPCF21S2/00F21K9/00F21V9/00F21Y2101/00H01L33/60H01L33/641
Inventor 李斌朱成虎夏国飞
Owner LONGTENG LIGHTING GRP
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