Photometric Data

The photometric charts on the following pages provide illumi-nation levels (FC) and beam size (in feet) for lamps of various wattages and beam patterns.Data is given for lamps aimed atboth horizontal and vertical surfaces.Maximum candlepower and rated life is also indicated for eachlamp.Lamp performance is based on bare lamp photometrics provided by lamp manufacturers.Additional information may be obtained from Juno.

MHLW DX WL AAAA 0Ëš 30Ëš530Ëš545Ëš560Ëš5 Aim point

A Aiming angle of fixture/lamp, measured from 0° CBCP Centerbeam candlepower D Distance from fixture/lamp to wall FC Footcandles at beam center (aim point) L Length of beam* MH Vertical distance from the fixture/lamp to the horizontal surface W Width of beam* X Vertical distance to the center of the beam measured from ceiling**

12-Volt and 24-Volt MR11/MR16 (Mirrored Reflector)

These Mirrored Reflector (MR) lamps have smaller “point-source” filamentsthat are precisely aligned in a minia-ture multi-faceted reflector to produce exacting beam distributions of white, halogen light. For spot distri- butions they produce more usable light per watt of energy than comparable wattagehalogen PAR lamps.Available in a wide range of beam spreads and wattages,the miniature 2"MR16 lamps allow for very compactfixture designs and, in combination with light control lenses, a high degree of specificity in lightingdesign.They are the best accent source for highlighting artwork, sculpture, or creating dramatic effects. Smaller,lower wattage 1-3/8" diameter MR11 lamps are also available for special situations where ultra-miniature fixture size is required. Like halogen PAR lamps, many MR16 lamps are now available in “IR” models where-by the infrared heat produced by the lamp is reflected back onto the filament, enabling it to burn hotter andbrighter, improving energy efficiency up to 30%. Life ranges from 2000 to 6000 hours. MR lamps require astep-down transformer to supply their required 12 or 24 volts.

*The beam spread in degrees and the beam “L” and “W” in the following tables are computed at 50% of centerbeam candlepower and represent areas of “effective illumination.” **In vertical aiming applications, aim point (x) is determined by dividing distance from the wall (D) by the tangent of the desired aim angle (A) (0.577 for 30Ëš, 1.0 for 45Ëš, 1.732 for 60Ëš)

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