Development of a simple light pipe from a Fresnel lens
This research developed a simple light pipe from using a Fresnel lens as a light source to supply natural light to a light pipe made of a zinc sheet. The objectives of the study were to (1) find the best focal length or focal distance of the Fresnel lens (size 28.5 cm × 28.5 cm), (2) the best range...
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| Format: | Article |
| Language: | Thai |
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Mahasarakham University
2020-08-01
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| Series: | Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham |
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| Online Access: | http://journal.msu.ac.th/upload/articles/article2659_62415.pdf |