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.
PAR is an abbreviation formed from the initials of the words Parabolic aluminized reflector. PAR lamp is a type of lamp widely used in commercial buildings, residences and transportation vehicles. PAR lamps are used in the headlights of old vehicles, exterior lights of vehicles such as trains and airplanes, and...
Devices that provide the appropriate voltage and current needed to operate gas-discharged lamps, such as fluorescent and HID, are called ballast. The ballast limits the current transmitted to the gas discharge lamps, thus preventing the lamp from deteriorating by attracting high current.