To provide the method for measurement of lumen and color maintenance of LED lamps, light engines, and LED luminaires. To describe the procedures to obtain uniform and reproducible lumen and color …

Photodiodes produce a leakage current that is directly proportional to the intensity of the light. This leakage current flows in the opposite direction to current in a normal diode or LED. Ex: As more …

LED lamps and luminaires combine multiple spectral components, which may be produced directly or through phosphor conversion, to create a mixture that appears white to the human eye.

Finding an LED and designing the best drivers for your system is like identifying a single star in the night sky. Just as a planisphere can help recognize stars and constellations, understanding the four main …

The XLamp XP-L Color LEDs feature the smallest possible distance between LED die, creating a small optical source for excellent optical control and efficient color mixing. The High Intensity version of this …

The plastic covering used in some LED lamps is manufactured from polycarbonate, the base housing contains PBT (polybutylene-terephthalate) and is essentially like that used throughout the plastics …

The materials used for the LED have a direct band gap with energies corresponding to near-infrared, visible or near-ultraviolet light. LED development began with infrared and red devices made with …