Translator Disclaimer
2 September 2008 Analysis of die-imaging and yellow hue phenomena in LED TIR lens
Author Affiliations +
For a wide application area, LEDs are always with secondary optic elements for a specific characteristic. However, the secondary optic element has two serious phenomena, die-imaging and yellow hue. In this literature, we study the two phenomena in two parts. The first part focuses on the relationship between the die-imaging phenomenon and the imaging power of TIR lens. In this part, we design two TIR lenses, point-to-point and point-to-plane, with difference imaging power and analysis the ray paths. The second part focuses on the simulation of white LED with the two different TIR lenses to study yellow hue phenomenon. Based on the color difference in CIE (u', v') picture, we get the relationship between refractive power and color shift. Finally, we adopt the MacAdam ellipsis system to define the reasonable color gamut.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yi-Yung Chen, I-Ju Chen, Allen Jong-Woei Whang, and Liang-Tang Chen "Analysis of die-imaging and yellow hue phenomena in LED TIR lens", Proc. SPIE 7059, Nonimaging Optics and Efficient Illumination Systems V, 70590O (2 September 2008);


Optical design for uniform color mixing illumination system
Proceedings of SPIE (September 18 2013)
A novel optimization strategy for LED street lamp designing
Proceedings of SPIE (December 31 2013)
Rapid design of LED optical elements with two free form...
Proceedings of SPIE (October 15 2013)
Design of collimating optical system for high power array LED
Proceedings of SPIE (December 18 2019)
Design of stereoscopic display monitor for multi-users
Proceedings of SPIE (November 23 2011)

Back to Top