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Open AccessArticle

Secondary Freeform Lens Device Design with Stearic Acid for A Low-Glare Mosquito-Trapping System with Ultraviolet Light-Emitting Diodes

1
Department of Electrical Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 807, Taiwan
2
Yuan General Hospital, Kaohsiung City 802, Taiwan
3
Department of Aviation and Communication Electronics, Air Force Institute of Technology, Kaohsiung City 820, Taiwan
4
Department of Industrial Engineering and Management, Minghsin University of Science and Technology, Hsinchu County 30401, Taiwan
5
Department of Graduate Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung City 807, Taiwan
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(6), 624; https://doi.org/10.3390/electronics8060624
Received: 11 May 2019 / Revised: 27 May 2019 / Accepted: 31 May 2019 / Published: 2 June 2019
(This article belongs to the Special Issue Intelligent Electronic Devices)
Dengue fever is a public health issue of global concern. Taiwan is located in the subtropical region featuring humid and warm weather, which is conducive to the breeding of mosquitoes and flies. Together with global warming and the increasing frequency of international exchanges, in addition to the outbreak of pandemics and dengue fever, the number of people infected has increased rapidly. This study is dedicated to the development of a new mosquito-trapping system. Research has shown that specific wavelengths, colors, and temperatures are highly attractive to both Aedes aegypti and Aedes albopictus. In this study, we create equipment which effectively improves the trapping capabilities of mosquitoes in a wider field. The design of the special Secondary Freeform Lens Device (SFLD) is used to expand the range for trapping mosquitoes and create illumination uniformity; it also directs light downward for the protection of users’ eyes. In addition, we use the correct amount of stearic acid as a mosquito attractant to allow a better control effect against mosquitoes during the day. In summary, when the UV LED mosquito trapping system is combined with a quadratic free-form lens, the experimental results show that the system can extend the capture range to 100 π m2 in which the number of captured mosquitoes is increased by about 350%. View Full-Text
Keywords: mosquitoes; Aedes aegypti; Aedes albopictus; secondary freeform lens device (SFLD); stearic mosquitoes; Aedes aegypti; Aedes albopictus; secondary freeform lens device (SFLD); stearic
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Tseng, W.-H.; Hsiao, W.-C.; Juan, D.; Chan, C.-H.; Hsiao, W.-S.; Ma, H.-Y.; Lee, H.-Y. Secondary Freeform Lens Device Design with Stearic Acid for A Low-Glare Mosquito-Trapping System with Ultraviolet Light-Emitting Diodes. Electronics 2019, 8, 624.

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