Next Generation Luminaires Design Competition

Indoor – Downlighting

"Calculite" by Philips Lightolier

Calculite fixture photo


Calculite is a 4" square downlight using remote phosphor technology. It produces high lumen output with 50˚ cutoff and a spacing criterion of 1.2. Optical assembly (light engine, heatsink, and reflector) is integrated; both it and dimmable driver are replaceable. Options include interchangeable wall washer, round apertures, output from 500-2000 lumens, and choice of color temperatures.

Judges comments

The judges appreciated the Calculite's appealing square pattern, wide distribution and heat sink design, but have some concerns about color shifts at the edge of the beam pattern.

Luminaire Testing

Light Output: 1048 lumens
Power: 19.6 watts
Efficacy: 53.5 lm/W
CCT: 3772K CRI: 76
Testing Laboratory: Luminaire Testing Laboratory Inc. – Report #15738 & #14857



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