When it comes to LED light boxes, Light Guide Plates (LGP) play a crucial role in distributing even light arosss the light box frame and enhance the high brightness of led light. There are mainly two kind of materials made for LGP ,one is acrylic (PMMA) and the other one is polystyrene (PS).
Both of them serve the purpose of guiding and diffusing led light for lightbox frame, but they have significant difference on the brightness of light, transparency, durability, cost, and performance etc.
No matter whether you are looking for quality led light box ,or LGP material for produce LED light box in your facility, you should know the main difference between these two kinds of LGP material and select the best opition for your .Here ,let us talk the key differences between acrylic LGP and PS LGP .
- Material Comparision:
- Acrylic LGP (PMMA LGP): This LGP is made from polymethyl methacrylate (PMMA), acrylic LGP offers superior light transmission (92% or more), which ensure excellent brightness and uniform illumination.
- PS LGP (Polystyrene LGP): Polystyrene LGP has lower transparency (about 85%-88%), which may result in slightly reduced brightness compared to acrylic.
- Durability & Lifespan
Acrylic LGP: Highly durable and resistant to getting yellow as time going, even after long-term use, the acrylic LGP still maintains its transparency and optical performance for over 10 years.
PS LGP: The PS LGP would get yellow and less brittleness after using some time, especially under exposure to UV light and heat. Its lifespan is obviously shorter than acrylic LGP.
- Light Diffusion & Brightness
Acrylic LGP: Provides better light diffusion and higher brightness due to its superior light transmission. It minimizes dark spots and offers a uniform glow across the panel.
PS LGP: Has lower diffusion efficiency, which may result in uneven lighting or dim spots, especially in larger light boxes.
- Cost
Acrylic LGP: More expensive due to its high quality and durability, which make itself perfect for high-end LED light boxes, advertising panels, and premium display signage.
PS LGP: More affordable and commonly used in budget-friendly applications, such as indoor signage and temporary display boards.
In conclusion , if you want to purchase premium LED light boxes, then acrylic LGP should be the best choice due to its brightness, durability, and clarity. Of couse ,its material cost is higher than PS LGP. However, if you consider the limit budget,then PS LGP can be a suitable alternative.
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