PAR 64

Overview

PAR stands for Parabolic Aluminized Reflector. A PAR 64 fixture, in its classic form, is little more than a metal housing ("can") around a sealed-beam lamp. In this lamp, the filament, parabolic reflector, and lens are fused into a single unit. The result is a powerful, oval beam of light with a soft, uncut edge.

The number 64 denotes the nominal reflector diameter in eighths of an inch: 64/8 = 8 inches (approx. 20 cm). Similarly, a PAR 56 is seven inches and a PAR 36 is four and a half inches in diameter. PAR 64 is the largest and most powerful of the common round PAR sizes, originally from stage and concert technology, but also used in film and TV productions.

Operating Principle and Beam Types

Unlike a Fresnel or a ERS (Ellipsoidal Reflector Spotlight), the beam of a classic PAR 64 cannot be continuously focused. The character and beam angle of the light are determined by the selected lamp—the same housing can cover different beam characteristics by changing the lamp. The oval beam shape can be aligned by rotating the lamp in its socket.

The common beam types of a 1000W PAR 64 lamp with their associated ANSI lamp codes:

Technical Data (typical 1000W Tungsten Lamp)

• Reflector diameter: approx. 8 inches (approx. 20 cm)
• Typical wattage: 1000W (lamps also available in lower wattages)
• Color temperature: 3200K (Tungsten/Artificial Light)
• Beam shape: oval, with a soft, uncut edge
• Accessories (barndoors, filter frames): typically 10 x 10 inches

The exact values depend on the lamp model and manufacturer; the beam characteristic results from the lamp type mentioned above. In addition to the classic Tungsten-sealed beam versions, LED PAR 64 fixtures are also common today.

Usage on Set

For its compact design, the PAR 64 delivers high light output and is well-suited as a hard, directional light source—for example, for backlights, effect lights, edge lights, for illuminating windows, or as a strong toplight. In film/TV contexts, PAR 64s are often used in rows (e.g., on trusses or in "Nine-Light"-like arrangements with other PAR types). Due to the lack of a sharp cut-off, the beam is controlled as needed using barndoors, flags, or diffusion.