Overall Illuminance Uniformity of IRED Lighting in Nighttime CCTV

Overall Illuminance Uniformity of IRED Lighting in Nighttime CCTV

This study looks at optimizinge light redistribution to improve the overall illuminance uniformity of commercial IRED modules. To obtain uniform illumination over a prescribed rectangular area, a freeform surface lens was evaluated using TracePro. The LED light overall illuminance uniformity regulat...

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Veröffentlicht in:Transactions on electrical and electronic materials 2017-02, Vol.18 (1), p.35-41
Hauptverfasser: Sa-Gong, Geon, Park, Yung-Jun, Park, Jung-Je, Lee, Suho
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Freeform surface lens
IRED lighting
Light emitting diode
Overall illuminance uniformity
Uniform illuminance
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container_title Transactions on electrical and electronic materials
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creator Sa-Gong, Geon
Park, Yung-Jun
Park, Jung-Je
Lee, Suho
description This study looks at optimizinge light redistribution to improve the overall illuminance uniformity of commercial IRED modules. To obtain uniform illumination over a prescribed rectangular area, a freeform surface lens was evaluated using TracePro. The LED light overall illuminance uniformity regulated in KSC 7658 was verified using Relux software. Experimental test results showed 0.81 overall illuminance uniformity for rectangular light distribution of LED lights having a radiation angle of 80°. After fabricating prototype IRED lights based on these simulation results, illuminance performance was observed when used as actual IRED lighting with a nighttime CCTV system. Image observation photographs of the prototype 80° rectangular IRED lights confirmed that object images can be seen clearly owing to high overall illuminance uniformity, and that dark regions of the CCTV screen were not shown.
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects Freeform surface lens
IRED lighting
Light emitting diode
Overall illuminance uniformity
Uniform illuminance
title Overall Illuminance Uniformity of IRED Lighting in Nighttime CCTV
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