Scattering method based on differences of refractive index in media and porous scattering material

Abstract

The invention relates to a scattering method based on differences of refractive index in media and a porous scattering material. According to the scattering method based on the differences of the refractive index in the media and the porous scattering material, the travelling direction of light is disturbed by using refraction or total reflection among the transparent media, and scattered light high in transmittance is obtained. The refraction or the total reflection among the transparent media is interfaces formed on the surface of a colorless and transparent scatterer which is scattered in the uniform and transparent media. Two sides of the interfaces have the different refractive index. The refractive index of the colorless and transparent scatterer is different from the refractive index of the uniform and transparent media. According to the scattering method based on the differences of the refractive index in the media and the porous scattering material, the colorless and transparent material is used, no transmission light barrier layer is arranged, a refraction angle or a reflection angle of the colorless and transparent scatterer is large, the linear degree of the light transmitting through the colorless and transparent scatterer is large, the number of the interfaces is few, so that the diffuseness effect is good, the linear degree and density of the scatterer can be selected and adjusted, luminous efficiency is high, and therefore the satisfactory scattering effect is obtained.

Description

technical field [0001] The invention belongs to the field of illumination optics, and relates to a scattering method and material, in particular to a scattering method and porous scattering material based on the difference in refractive index in a medium. Background technique [0002] With the development of light source technology, the unit power density of light source is increasing, which far exceeds the limit of human visual ability. The efficiency of lighting is not only related to the light source (lamp), but also to the luminaire. In the past, frosted glass and corrugated glass were used to reduce glare, and the point light source was a surface light source. With the improvement of people's living standards, the pursuit of beautiful lamps and lanterns has become more and more important. Frosted glass has the advantage of high light transmittance, but low shading, and the blurred shape of the light source can still be seen through the frosted glass. In recent years,...

AI Technical Summary

Problems solved by technology

Titanium dioxide has the advantages of high whiteness and high reflectivity, but the diffused light produced by milky white glass on the light source is transmitted light, not reflected light, and titanium dioxide particles will block the light transmission. Although the reflectivity between particles is high, this many times Reflection severely attenuates luminous flux, and this imperfect method of diffuse reflection greatly reduces lighting efficiency in the long run

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