For decades, optics for focusing laser and solar light has been developed. Here, we explain the radiometry and discuss the nonimaging optics for efficient concentration of LED light into an intense and small focal spot.
© 2012 OSA
I. Moreno and N. Rodriguez, "New Use of LED Light: Intense Concentration into a Small Focal Spot," in Renewable Energy and the Environment Optics and Photonics Congress, OSA Technical Digest (online) (Optical Society of America, 2012), paper LT3B.4.
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