LR4 – Four-Inch Architectural Downlight with
Smooth, Low-Brightness Aperture Appearance
The LR4 is an amazing combination of technical
innovations, including breakthroughs in optical design, electronics design,
mechanical design, and thermal management. The core of the innovation is a new
way to generate white light with LEDs.
A Better Way to Generate White Light
The technology is elegantly simple, yet incredibly
effective. It delivers high efficacy light with beautiful, warm color
characteristics by mixing the light from yellow and red LEDs. This approach
enables active color management that maintains tight color consistency over the
life of the product.
Effective Thermal Management
Ensuring the long life of an LED product depends on
effectively controlling the operating temperature of the LEDs. The LR4 was
designed to utilize all components to effectively transfer heat and keep the
maximum LED temperature at or below acceptable levels—even its worst-case
Unprecedented Aperture Appearance
The LR4 optical system improves upon the desirable
aesthetic of a smooth aperture appearance. Cree technology enables a light
source and reflected image that are smoother and more uniform than possible with
incandescent or compact fluorescent. This means that LR4 downlight integrates
cleanly with architecture and deliver crisp and clean light scallops on vertical
surfaces that are free of distracting striations or hotspots.