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Open AccessArticle

Luminous Intensity Field Optimization for Antiglare LED Desk Lamp without Second Optical Element

1
Department of Mechanical Engineering, Advanced Institute of Manufacturing with High-Tech Innovations, National Chung Cheng University, 168, University Rd., Min-Hsiung, Chia-Yi 62102, Taiwan
2
Department of Hospital and Health Care Management. Chia-Nan University of Pharmacy, No.60, Sec. 1, Erren Rd., Rende Dist. Tainan 71710, Taiwan
3
Department of Electro-Optical Engineering, National United University, 2, Lienda, Miaoli 26063, Taiwan
4
Department of Materials Science and Engineering, National United University, 2, Lienda, Miaoli 26063, Taiwan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(7), 2607; https://doi.org/10.3390/app10072607
Received: 11 March 2020 / Revised: 27 March 2020 / Accepted: 7 April 2020 / Published: 10 April 2020
(This article belongs to the Special Issue Joint Special Issue With OPTIC 2019)
This study proposes a model of a light module with an optimized luminous intensity field for realizing an antiglare light-emitting diode (LED) desk lamp without a second optical element. We simulated different luminous intensity field profiles to analyze the unified glare rating (UGR) and illumination uniformity performance of a desk lamp. The spatial effect of UGR and the illumination uniformity affect eye comfort. The light module was set to different beam angles without a second optical element, louver structure, and reflective element on the luminaire to compare different UGRs and uniformity values for evaluating human eye comfort. The simulation and experimental results indicated that the luminous intensity curve for a beam angle of 90° achieved an illumination uniformity of 80% and a UGR of 18.1 at a height of 45 cm, thus realizing a human-friendly antiglare desk lamp. View Full-Text
Keywords: light-emitting diode; unified glare rating; antiglare; desk lamp; second optical element light-emitting diode; unified glare rating; antiglare; desk lamp; second optical element
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MDPI and ACS Style

Ye, Z.-T.; Chang, C.; Juan, M.-C.; Chen, K.-J. Luminous Intensity Field Optimization for Antiglare LED Desk Lamp without Second Optical Element. Appl. Sci. 2020, 10, 2607. https://doi.org/10.3390/app10072607

AMA Style

Ye Z-T, Chang C, Juan M-C, Chen K-J. Luminous Intensity Field Optimization for Antiglare LED Desk Lamp without Second Optical Element. Applied Sciences. 2020; 10(7):2607. https://doi.org/10.3390/app10072607

Chicago/Turabian Style

Ye, Zhi-Ting; Chang, Chieh; Juan, Mao-Chieh; Chen, Kuei-Jung. 2020. "Luminous Intensity Field Optimization for Antiglare LED Desk Lamp without Second Optical Element" Appl. Sci. 10, no. 7: 2607. https://doi.org/10.3390/app10072607

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