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

fYear

2013

fDate

10-12 Nov. 2013

Firstpage

263

Lastpage

266

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Lighting (ChinaSSL), 2013 10th China International Forum on

Conference_Location

Beijing

Print_ISBN

978-1-4799-2249-9

Type

conf

DOI

10.1109/SSLCHINA.2013.7177365

Filename

7177365