Philips Wins Most Innovative Product of the Year at Lightfair 2009 with Calculite SSL Donalights
Part of the Family
The 4" aperture round and square downlights integrate seamlessly with the existing Calculite product line. The companion solid-state wall washers are an efficient solution for illuminating vertical surfaces. Select accent pieces utilizing HID or low voltage sources to achieve a coherent, dynamic visual environment.
Solid-State Lighting must be Designed as a System
Products must not be evaluated based on the rated performance of the individual LEDs or other components, as each will function differently in various operating environments. Lightolier's system approach involves the concurrent design of power conversion, LED circuits, thermal management and optics. This guarantees that all components will deliver optimum performance and long life.
Light Engine
Thermal management is critical to every aspect of an LED system. Light output, life and color stability are all directly related to operating temperature. By designing the light engine as a fully enclosed, modular system, maximum heat dissipation is ensured and the potential for field contamination has been eliminated.
Power Supply
Separated from the light engine to minimize heat conduction, the Philips-proprietary power supply rapidly and accurately controls power output to the light engine. The result is a 90% efficient power conversion system, optimized to maximize the effectiveness of the Calculite luminaire.
Rendering White Light
Lightolier's proprietary technology redefines how light from blue LEDs is converted to white. Remote phosphor technology achieves system performance of 50 lumens per watt with consistent, uniform color across products.
Typically white LEDs utilize a phosphor coated blue chip. Slight variations in coating thickness have a substantial impact on color and performance. Also, blue light contacting the phosphor is scattered; up to 60% of the converted light is back-reflected. Remote mounting the phosphor to a diffusion lens allows back-reflected light to be redirected out of the luminaire by a highly-reflective mixing chamber. The result is a 20% increase in system efficiency.
