The Optimal Design of Multi-Chip White-Light LEDs for Color Uniformity

2013 ◽  
Vol 415 ◽  
pp. 465-472
Author(s):  
Chiu Jung Yang ◽  
Chien Sheng Huang ◽  
Ji Nan Jeng ◽  
Po Wen Chen
Keyword(s):  
Monte Carlo ◽  
Optimal Design ◽  
Ray Tracing ◽  
White Light ◽  
Experimental Results ◽  
Commercial Software ◽  
Color Uniformity ◽  
Color Rendering Index ◽  
Color Rendering ◽  
Light Modeling

A multi-chip white-light modeling algorithm for high color rendering index and high color uniformity of surface mounted LED devices is demonstrated. The simulation of white-light LED model, according to the principle of additive color mixture by four color of red, amber, green, blue LEDs and using the commercial software program to perform Monte Carlo ray tracing has been developed. The simulation and experimental results show that the performance can be achieved with a number of LED chips.

scholarly journals Color Temperature Tunable White-Light LED Cluster with Extrahigh Color Rendering Index

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Minhao Zhang ◽  
Yu Chen ◽  
Guoxing He
Keyword(s):  
White Light ◽  
Experimental Results ◽  
Color Temperature ◽  
Blue Led ◽  
Average Value ◽  
Red Led ◽  
Green Led ◽  
Color Rendering Index ◽  
Color Rendering

The correlated color temperature (CCT) tunable white-light LED cluster with extrahigh color rendering property has been found by simulation and fabricated, which consists of three WW LEDs (CCT = 3183 K), one red LED (634.1 nm), one green LED (513.9 nm), and one blue LED (456.2 nm). The experimental results show that this cluster can realize the CCT tunable white-lights with a color rendering index (CRI) above 93, special CRI R9 for strong red above 90, average value of the special CRIs of R9 to R12 for the four saturated colors (red, yellow, green, and blue) above 83, and luminous efficacies above 70 lm/W at CCTs of 2719 K to 6497 K.

Warm White Light with a High Color-Rendering Index from a Single Gd3Al4GaO12:Ce3+ Transparent Ceramic for High-Power LEDs and LDs

2018 ◽  
Vol 11 (2) ◽  
pp. 2130-2139 ◽  
Author(s):  
Shuang Liu ◽  
Peng Sun ◽  
Yongfu Liu ◽  
Tianliang Zhou ◽  
Shuxing Li ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Transparent Ceramic ◽  
Warm White Light ◽  
Color Rendering Index ◽  
Color Rendering

Broadband white-light emission with a high color rendering index in a two-dimensional organic–inorganic hybrid perovskite

2018 ◽  
Vol 6 (5) ◽  
pp. 1171-1175 ◽  
Author(s):  
Zhenyue Wu ◽  
Chengmin Ji ◽  
Zhihua Sun ◽  
Sasa Wang ◽  
Sangen Zhao ◽  
...  
Keyword(s):  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Two Dimensional ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Color Rendering Index ◽  
Color Rendering

Broadband white-light emission with an ultrahigh CRI of 93 based on an organic–inorganic hybrid 2D corrugated perovskite.

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