Light conversion module

Abstract

The invention relates to a module possessing a light conversion function. An organic silicone rubber is taken as a carrier. An LED phosphor and an organic light diffuser agent are added to form the light conversion module. The module is soft and elastic. A preparation method is characterized by: mixing organic silicon glue, the LED phosphor and the organic light diffuser agent uniformity; injecting into a mould, heating, curing and molding. The module can be used in a blue ray LED light source. The LED phosphor can be excited to glow by the blue ray emitted by the blue ray LED light source, and through reflection, refraction and scattering effects of the organic light diffuser agent, the light of the LED phosphor and the blue ray which is not be absorbed are composited into the white light or the light with other colors. The light color and intensity of the obtained compound light distribute uniformly, and are soft without glare. The compound light can realize the wide-angle light and can be applied in LEC illumination and decorative lamps.

Description

technical field [0001] The invention relates to a module with light and color conversion function, which belongs to the technical field of LED lighting. technical background [0002] At present, with the gradual depletion of energy and the gradual deterioration of the environment, the world is advocating green economy, green life, and low-carbon environmental protection. Under the impetus of this background, LED lighting technology has been vigorously developed due to its characteristics of energy saving, environmental protection, high light efficiency, and long life. [0003] Most of the current LED lamps use blue light chips to excite phosphors, and the excited phosphors emit green, yellow, orange, red and other colored lights, which are mixed with blue light not absorbed by the phosphors to form white light. Under this principle, the blue light is directly emitted by the semiconductor chip, which belongs to the point light source. The number of light-emitting points is d...

AI Technical Summary

Problems solved by technology

[0006] 1. Improve the packaging process, and change the method of direct dispensing to pre-fabricated phosphor sheet or film layer or module, such as: CN201096279, CN201062757, this kind of method can solve the uneven distribution of phosphor concentration in dispensing The problem of uneven emitted fluorescent chromaticity caused by uniformity and the difference in color temperature of different lamps, but the outgoing direction of blue light has not changed, and the distribution of blue light will still be uneven.

[0007] 2. Add a diffusion film or a frosted cover outside the phosphor layer. This method is widely used and can achieve an overall improvement in the uniformity of light distribution. However, this method often leads to a decrease in light extraction efficiency. If you want to achieve the ideal light color Uniformity, usually more than 10% loss of light efficiency

[0008] 3. Adding an inorganic diffusing agent to the encapsulant, this method can also achieve an overall improvement in the uniformity of light distribution, but it will also cause a loss of more than 5% of the light output efficiency, and the cost of this type of diffusing agent is very high, and it will make the The viscosity of silica gel increases significantly, which affects the fluidity of silica gel and makes it more difficult to inject glue

[0009] 4. Some methods add a lens structure outside the phosphor layer. Such methods as CN201096279 and CN201363572 can usually effectively change the light output angle, but they cannot solve the problem of light color uniformity, and glare and aperture phenomena still occur

And the design of the lens shape is more complicated

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