Design of an LED Spot Light System with a Projection Distance of 10 km
We designed a spot light system with an illumination range of 10 km. In the designed system, an appropriate white light-emitting diode (LED) was selected according to the exitance and injection power required. Subsequently, through a first-order optical design, the geometry of the lens and reflector...
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MDPI AG
2019-10-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/9/10/524 |
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| author | Chi-Shou Wu Kuan-Yu Chen Xuan-Hao Lee Shih-Kang Lin Ching-Cherng Sun Jhih-You Cai Tsung-Hsun Yang Yeh-Wei Yu |
| author_facet | Chi-Shou Wu Kuan-Yu Chen Xuan-Hao Lee Shih-Kang Lin Ching-Cherng Sun Jhih-You Cai Tsung-Hsun Yang Yeh-Wei Yu |
| author_sort | Chi-Shou Wu |
| collection | DOAJ |
| description | We designed a spot light system with an illumination range of 10 km. In the designed system, an appropriate white light-emitting diode (LED) was selected according to the exitance and injection power required. Subsequently, through a first-order optical design, the geometry of the lens and reflector was determined using geometrical calculation. Because the central illuminance of the projection spot of the reflector was 2.5 times that of the cover lens, we first considered the fabrication error of the reflector. According to the adjustment of the optimized distance between the white LED and reflector, we modified the design of the cover lens to fit the new location of the white LED. An LED spot light module containing 16 spot light units was used. The module’s power injection was only 68.2 W. Because of the excellent performance of the designed system in terms of the divergence angle of the projection beam and maximum luminous intensity, which were 1.6° and 2,840,000 cd, respectively, the projection distance of the LED spot light module was 3.37 Km, according to the ANSI regulation. Finally, a spot light system with nine modules and capable of achieving a projection distance of 10 km was successfully fabricated. |
| first_indexed | 2024-04-11T13:04:02Z |
| format | Article |
| id | doaj.art-a7981504b819475e97cd73d118aa1f80 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T13:04:02Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-a7981504b819475e97cd73d118aa1f802022-12-22T04:22:50ZengMDPI AGCrystals2073-43522019-10-0191052410.3390/cryst9100524cryst9100524Design of an LED Spot Light System with a Projection Distance of 10 kmChi-Shou Wu0Kuan-Yu Chen1Xuan-Hao Lee2Shih-Kang Lin3Ching-Cherng Sun4Jhih-You Cai5Tsung-Hsun Yang6Yeh-Wei Yu7Department of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanDepartment of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanDepartment of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanDepartment of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanDepartment of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanDepartment of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanDepartment of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanDepartment of Optics and Photonics, National Central University, Chung-Li 32001, TaiwanWe designed a spot light system with an illumination range of 10 km. In the designed system, an appropriate white light-emitting diode (LED) was selected according to the exitance and injection power required. Subsequently, through a first-order optical design, the geometry of the lens and reflector was determined using geometrical calculation. Because the central illuminance of the projection spot of the reflector was 2.5 times that of the cover lens, we first considered the fabrication error of the reflector. According to the adjustment of the optimized distance between the white LED and reflector, we modified the design of the cover lens to fit the new location of the white LED. An LED spot light module containing 16 spot light units was used. The module’s power injection was only 68.2 W. Because of the excellent performance of the designed system in terms of the divergence angle of the projection beam and maximum luminous intensity, which were 1.6° and 2,840,000 cd, respectively, the projection distance of the LED spot light module was 3.37 Km, according to the ANSI regulation. Finally, a spot light system with nine modules and capable of achieving a projection distance of 10 km was successfully fabricated.https://www.mdpi.com/2073-4352/9/10/524white ledlong-distance projectionexitancespot light |
| spellingShingle | Chi-Shou Wu Kuan-Yu Chen Xuan-Hao Lee Shih-Kang Lin Ching-Cherng Sun Jhih-You Cai Tsung-Hsun Yang Yeh-Wei Yu Design of an LED Spot Light System with a Projection Distance of 10 km Crystals white led long-distance projection exitance spot light |
| title | Design of an LED Spot Light System with a Projection Distance of 10 km |
| title_full | Design of an LED Spot Light System with a Projection Distance of 10 km |
| title_fullStr | Design of an LED Spot Light System with a Projection Distance of 10 km |
| title_full_unstemmed | Design of an LED Spot Light System with a Projection Distance of 10 km |
| title_short | Design of an LED Spot Light System with a Projection Distance of 10 km |
| title_sort | design of an led spot light system with a projection distance of 10 km |
| topic | white led long-distance projection exitance spot light |
| url | https://www.mdpi.com/2073-4352/9/10/524 |
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