1. Practical issues for two-light-sources model of phosphor-based white light-emitting diode
- Author
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Fuh-Shyang Juang, Chung-Jen Ou, Yu-Cheng Chang, and Lin-Ann Hong
- Subjects
Quantum optics ,Physics ,business.industry ,Phosphor ,Backlight ,Atomic and Molecular Physics, and Optics ,law.invention ,Lens (optics) ,Optics ,Apodization ,law ,Color mixing ,Optoelectronics ,business ,Light-emitting diode ,Diode - Abstract
We report an intuitive approach to simulating the performance of the phosphor-based light emitting diode (LED) by using the two-light-sources model for an optimized LED lens. The optimized secondary lens shape is achieved by approaching a uniform energy distribution on the detecting plane. Both the spectrum and spatial apodization of the LED structure are discussed, and the results indicate that the two-light-sources model can solve the misleading design on the phosphor-based LED due to imperfect color mixing of light source, that one can satisfy the highly uniformity requirement for specific applications, such as display backlight or optogenetic.
- Published
- 2011
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