The current LED bulb lampshade has a series of problems
1. The fragile of the glass lampshade;
2, transparent PC plus frosted lampshade has low light transmittance (only 80-89%) and can see the defects of point light source;
3, transparent PC plus ribbed or yakeli color powder has low light transmittance (only 80-89%) and can see the defects of the point source;
The US Department of Energy has released the final version of the ENERGY STAR standard for LED light source lamps and the UL certification in the United States. Safety is a very strict requirement. Then the LED glass lamp cover is accidentally dropped and is prone to breakage and electric shock. The safety cannot be guaranteed. Unable to pass. The problem of light efficiency is also very strict, so choosing a lampshade with high light transmittance is an inevitable choice, and it is also necessary to prevent glare problems, so it is a very important requirement not to see the point source (ie, the spot).
Features of qualified LED lampshade:
1. It has high light transmission, high diffusion, no glare, no light and shadow;
2. The light source is excellently concealed (effectively adjust the diffusivity and light transmittance, and the light transmittance reaches the maximum without seeing the lamp bead);
3. The light transmittance reaches 94%;
4. Has high flame retardancy;
5. Has high impact strength;
6. Suitable for the use of LED bulbs;
7. Realize the conversion of point source illumination into spherical illumination.
The figure below is a comparison of several common plastic shades.
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