Abstract
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.
Highlights
Light-emitting diodes (LEDs) offer advantages such as high efficiency, a high color-rendering index, energy saving, and environmental protection [1,2,3]
For a beam angle of desk lamp height of 45 cm, the unified glare rating (UGR) is less than the threshold value of 19, and the uniformity is higher
The desk lamp has a width of 42.5 mm, height of 12 mm, and length of mm
Summary
Light-emitting diodes (LEDs) offer advantages such as high efficiency, a high color-rendering index, energy saving, and environmental protection [1,2,3] They have been widely applied as the light source in desk lamps [4]. Some studies have discussed how to convert LED point light sources into a planar light source to reduce the UGR index. Luminaire designers use multiple structures to reduce glare; for instance, reflective matrix bars can improve the UGR and illumination uniformity and simultaneously achieve adequate illuminance. This causes a large loss in luminaire efficiency.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
