Uniform illumination of distant targets using a spherical light-emitting diode array

2007 ◽  
Vol 46 (3) ◽  
pp. 033001 ◽  
Author(s):  
Jesús Muñoz
Keyword(s):  
Light Emitting Diode ◽  
Diode Array ◽  
Uniform Illumination ◽  
Light Emitting

Design of a uniform irradiance source based on light emitting diodes

2021 ◽  
pp. 147715352110010
Author(s):  
E Rojas Villafañe ◽  
A Valor ◽  
JM de la Rosa ◽  
D Fabila-Bustos ◽  
S Stolik
Keyword(s):  
Intensity Distribution ◽  
Theoretical Calculations ◽  
Light Emitting Diode ◽  
Simulation Method ◽  
Diode Array ◽  
Light Sources ◽  
Uniform Illumination ◽  
Radiant Intensity ◽  
Light Emitting ◽  
Simulation Results

Many applications in various fields require uniform illumination from light sources, for example, in medical imaging in the biophotonics area. In this work, the design and application of an annular light-emitting diode array capable of producing a homogeneous irradiance pattern is presented. As part of the design process, software that allows the simulation of the irradiance pattern as a function of the LED’s radiant intensity distribution, and the position and inclination angle of the LEDs, was developed and validated. Based on the simulation results, a source that produces homogeneous illumination over an area of 20 mm in diameter, where the lowest irradiance is more than 94% of the maximum irradiance, was constructed and tested in real conditions. The simulation method and theoretical calculations on which the array is based can be applied to the design of sources for other applications where a homogeneous irradiance is required.

Light-emitting device with regularly patterned growth of an InGaN/GaN quantum-well nanorod light-emitting diode array

2013 ◽  
Vol 38 (17) ◽  
pp. 3370 ◽  
Author(s):  
Horng-Shyang Chen ◽  
Yu-Feng Yao ◽  
Che-Hao Liao ◽  
Charng-Gan Tu ◽  
Chia-Ying Su ◽  
...  
Keyword(s):  
Quantum Well ◽  
Light Emitting Diode ◽  
Diode Array ◽  
Light Emitting ◽  
Patterned Growth

A Novel Image Analysis of Light Emitting Diode Array Biostimulation Applied on Microcirculation

2018 ◽  
Author(s):  
Chuan-Tsung Su ◽  
Yi-Chia Shan ◽  
Wei Fang ◽  
Chii-Wann Lin ◽  
Ju-Hsuan Juan ◽  
...  
Keyword(s):  
Image Analysis ◽  
Light Emitting Diode ◽  
Diode Array ◽  
Light Emitting

Photoelectric Characteristics of Micro Flip-Chip AlGaInP Light Emitting Diode Array

2018 ◽  
Vol 38 (9) ◽  
pp. 0923001
Author(s):  
Ban Zhang ◽  
Liang Jingqiu ◽  
Lü Jinguang ◽  
Li Yang
Keyword(s):  
Flip Chip ◽  
Light Emitting Diode ◽  
Diode Array ◽  
Light Emitting ◽  
Photoelectric Characteristics
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