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USABLE LIGHT

Photonics Spectra
Mar 2007
Future Lighting Solutions, a division of Future Electronics Inc., has unveiled the Usable Light Tool, an online resource that enables lighting designers to model and evaluate power LED performance for lighting in real-world environments. In the past, the analysis of LEDs had been limited by the assumption of a junction of 25 °C, which yielded incomplete and inaccurate results. Taking into account the effects of relationships among dissipated power, heat, light output, current and forward voltage, the tool enables users to select LEDs and modify parameters such as the number of LEDs, the ambient temperature and the thermal resistance of the system. It also provides details on the usable light and efficiencies that can be expected when using the specifications.



GLOSSARY
light
Electromagnetic radiation detectable by the eye, ranging in wavelength from about 400 to 750 nm. In photonic applications light can be considered to cover the nonvisible portion of the spectrum which includes the ultraviolet and the infrared.
photonics
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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