White Light Diffuser Sheet is an optical plastic material designed for LED lighting systems. It is white and translucent in appearance. The common materials are PS (polystyrene), PMMA (acrylic) or PC (polycarbonate). The thickness ranges from 0.25mm to 3.0mm, and it has an excellent balance between diffusion rate and transmittance.
White Light Diffuser Sheet has excellent light diffusion ability, with a diffusion rate of more than 95%. While ensuring the brightness of the LED light source, it effectively eliminates point-like light emission and improves the overall lighting uniformity. It is widely used in high-end lighting scenes without shadow requirements.
White Light Diffuser Sheet has an optional transmittance of 60% to 85%, which can be matched and adjusted according to the brightness of different light sources. For example, in the backlight panel using 2835 LED lamp beads, a model with a transmittance of 78% can be selected to achieve the best balance between brightness and softness.
The diffuser made of PC material can withstand temperatures up to 120℃ in long-term operation and is not easy to deform. It is suitable for enclosed lamps or high-power LED lighting environments to ensure that the product does not warp or discolor under high-temperature operation.
White Light Diffuser Sheet supports a variety of processing methods such as laser cutting, CNC cutting, and thermoforming. The dimensional accuracy can be controlled within ±0.1mm, and it can be easily embedded in various lamp housings and light guide plate systems without additional mold modification.
Some models support surface anti-scratch and anti-static treatment, such as applying a layer of anti-scratch coating with a hardness of 1.5H, and have a surface resistance anti-static value of 10^9Ω, which effectively extends the product life, reduces dust adsorption, and improves cleanliness and stability.
White Light Diffuser Sheet is widely used in embedded LED panel lights in large commercial supermarkets, effectively eliminating lamp bead glare and improving light uniformity. For example, the LED system of Carrefour supermarket uses a diffuser with a transmittance of 72% to achieve a lighting experience with wide light coverage and no blind spots.
In the light box advertising system of Terminal T3 of Beijing Capital International Airport, White Light Diffuser Sheet is used in the ultra-thin backlight structure, using 0.6mm thick PMMA material to ensure high brightness while eliminating the "spot light" problem, improving the overall visual quality of the advertisement.
Many medical institutions use LED lamp panels with White Light Diffuser Sheet in the auxiliary lighting areas of CT and MRI. Its diffusion ensures a soft light source and reduces patient discomfort. A domestic tertiary hospital uses 85% transmittance PC material light guide for diagnosis room lighting.
In many industrial plants under General Electric in the United States, White Light Diffuser Sheet is used in large LED ceiling lights. The 1.0mm thick high-diffusion PS material is used, which can withstand long-term lighting all day and night and ensure that there is no dark area in the lighting.
In the Uniqlo brand store, soft light strips with built-in White Light Diffuser Sheets are installed above the clothing shelves to achieve uniform lighting of the goods with gentle colors, enhancing the consumer experience.
