Resources | White Papers | Optics & Opt. Materials | Apr 21, 2017

White Paper: Shaping LED Diffuser Performance with Polycarbonate Materials

The LED lighting market continues to grow, yet consumers are accustomed to the soft white diffused light from incandescent bulbs. To speed up adoption, manufacturers are utilizing plastic materials containing diffusion additives to offset harsh LED illumination and eliminate hot spots. It’s important to choose the correct diffusion plastic to meet to meet transmission, color and UL requirements. In this paper, we examine how plastic selection, a diffusion package and color help designers achieve the desired look for their application.

White Paper: EXCERPT
In developing new diffusion polycarbonates, Covestro scientists realized that not only does the diffusion package need to be optimized, but the base resin as well. LED light has emission peaks near 450 nm and 550-650 nm, but standard polycarbonate absorbs at those wavelengths, especially in the 550-650 nm region, resulting in lower LED light transmission (Figure 1). Covestro previously created a line of transparent LED polycarbonate grades to mitigate this effect, and applied the same concept for new diffusion applications in injection molding, sheet and film products.

Figure 1: Transmission curves of polycarbonate


 

 

 

 

 

 

 

 

 

 

_________________________________________________________


Download the White Paper!

 
Provided by

_________________________________________________________

 

Supported by LED professional, Luger Research e.U. - (c) 2017

FEATURED

Functional Intelligence for Smart Lighting with Mobile Apps

Functional Intelligence for Smart Lighting with Mobile Apps OSRAM is innovating commercial lighting with mobile apps designed for lighting professionals and end-users. Easy configuration means you spend less time installing. OSRAM’s user-friendly apps empower users with switching, brightness adjustments and the ability to change color temperature from ... Read more »

FEATURED

WHITE PAPER - 4 Key Considerations for Your IoT Strategy

WHITE PAPER - 4 Key Considerations for Your IoT Strategy The digital universe is expected to grow exponentially. Much of this data will be generated by billions of IoT devices. Do you have an IoT strategy that’s ready to take advantage of these data? Download this whitepaper and get details on the 4 key considerations for building a strong IoT foundation. Read more »

EDITORIAL

High Conductive Foils Enabling Large Area Lighting

High Conductive Foils Enabling Large Area Lighting Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP as one of the leading partners for research and development for surface technologies and organic electronics and Sefar AG, a leading manufacturer of precision fabrics from monofilaments, developed a roll-to-roll ... Read more »

page_peel