Plastic

Polymethyl methacrylate (PMMA) is a transparent and rigid thermoplastic material. PMMA is also known as acrylic, acrylic glass and plexiglass. It is widely used in the production of lenses, diffusers and light guides in the lighting industry, as it provides high light transmittance.

In the lighting industry, LED refers to the LED package, not an LED chip. The LED package is a combination of one or more LED chips with mechanical supports, optical elements, electrical connections and thermal conduction paths. LED packaging is a critical process that affects the thermal performance, optical efficiency,...