Typically the lamp and reflector are one unit, which directs a sharp, precise beam of light. Occupancy Sensor - Control device that turns lights off after the space becomes unoccupied. May be ultrasonic, infrared, combination or other type. PAR Lamp - A Parabolic Aluminized Reflector lamp. An incandescent, metal halide or compact fluorescent lamp used to redirect light from the source using a parabolic reflector.
Lamps are available with flood or spot distributions.
Parabolic Luminaire - A popular type of fluorescent fixture which has a louver composed of aluminum baffles that are curved in a parabolic shape. The resultant light distribution produced by this shape provides reduced glare, better light control, and is considered to have greater aesthetic appeal. Paracube - A metallic coated plastic louver made up of small squares. Often used to replace the lens in an installed troffer to enhance its appearance. The paracube is visually comfortable, but the luminaire efficiency is lowered.