Title :
Light distribution function application in LED direct backlight unit
Author :
Chi-Feng Chen ; Shin-Hong Kuo
Author_Institution :
Dept. of Mech. Eng., Nat. Central Univ., Chungli, Taiwan
Abstract :
In this study, light distribution function is applied to the LED direct backlight unit (DBLU) with the Gaussian optical field distribution fitting polynomial as the objective function, using a nonlinear least squares method. The distribution function of the LED light provides a light distribution simulation algorithm, for the reflection of the light source and light box, which accurately simulates the LED DBLU authentication to obtain light distribution function calculation results. A simple LED module is designed for authentication. Comparison with the experiment, simulation error of a single light source can be less than 0.56% and the overall simulation error is less than 0.81%. Obvious, it is a valid simulation method for a LED module.
Keywords :
Gaussian distribution; LED lamps; least squares approximations; polynomials; DBLU; Gaussian optical field distribution fitting polynomial; LED direct backlight unit; light box; light distribution function; light distribution function application; light distribution simulation algorithm; light source; nonlinear least squares method; objective function; Accuracy; Distribution functions; Light emitting diodes; Light sources; Mathematical model; Polynomials; Power systems;
Conference_Titel :
Solid State Lighting (ChinaSSL), 2013 10th China International Forum on
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-2249-9
DOI :
10.1109/SSLCHINA.2013.7177365
