Cart (Loading....) | Create Account
Close category search window
 

Uniform Illumination Design by Configuration of LED Array and Diffuse Reflection Surface for Color Vision Application

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Zhen-min Zhu ; Coll. of Precision Instrum. & Opto-Electron. Eng., TianJin Univ., Tianjin, China ; Xing-hua Qu ; Guo-xin Jia ; Jian-fei Ouyang

Illumination uniformity and color mixing results are essential for color vision applications. In this paper, an indirect method is proposed for the uniform illumination, and a mathematically simulated algorithm is developed. We integrate the method of light-emitting diode (LED) array and diffuse reflection surface for uniform illumination system. By considering each single LED as an imperfect Lambertian emitter, we discuss the irradiance distribution over a sphere's inner surface to the three-ring LED array. The sphere's inner surface is a diffuse reflection surface with high hemisphere reflectance. Using the bi-directional reflectance distribution functions (BRDF) of the sphere's inner surface, we simulate the uniformity of the LED illumination at varying distances. Finally, we design a practical LED illumination. The uniformity of practical LED illumination agrees with the simulated result. The results demonstrate the usefulness of this method for uniform illumination design.

Published in:

Display Technology, Journal of  (Volume:7 ,  Issue: 2 )

Date of Publication:

Feb. 2011

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.