PARScheinwerfer

PARScheinwerfer, commonly called PAR-CANs, are a class of stage lighting fixtures that use a parabolic aluminized reflector (PAR) to shape light emitted by a single lamp. The result is a relatively broad, punchy beam that is well suited for washes, backlighting, and color effects in theatres, concerts, and event venues. The fixture is valued for its simplicity, ruggedness, and low cost compared with more complex lighting instruments.

Construction and function: A PARScheinwerfer consists of a cylindrical metal housing with a lamp socket at the rear and a front opening protected by a glass lens and outer ring. Light is produced by a PAR-capable lamp and directed by the reflector to produce a defined beam angle. Most traditional PAR-CANs are non-zoom; beam width is determined by the lamp, reflector, and lens assembly. Color effects are achieved with external color gels or filters, or with dedicated color-cap variants. Modern iterations often use LED emitters and offer DMX control and programmable colors.

Variants and sizes: The most common sizes are PAR64, PAR56, and PAR38, with variations in depth and mounting. Long-neck and short-neck designs affect the fixture’s profile and suitability for different rigs. Beam angles in older incandescent versions cover a range from tight (around 10°) to very wide (up to about 60°), while LED PARs provide adjustable color and beam spread through electronic control.

Controls and usage: Historically, PAR-CANs were wired through dimmers and controlled from a lighting console. Today they are frequently driven by DMX or integrated into LED wash systems. They remain popular for retro aesthetics, straightforward color washes, and cost-effective lighting in small to medium venues.

Safety and maintenance: Incandescent PAR lamps generate substantial heat, requiring adequate ventilation and careful handling when hot. LED PAR variants produce less heat and power, but proper electrical and thermal management remains essential.