The Study of Near-Field Module of Multiple Chip LED
| Autor: | Chun-Chieh LEE, 李俊杰 |
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| Rok vydání: | 2011 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 So far most of all reflectors and lens consist with the LED light source, commercial LED spotlight, lamp in the market. But in general, the design reflectors or lens of LED by the type of lambertain. It didn’t consider the near-field optical properties when the reflector or lens of LED was disigned. Due to popularity of multiple chip LED, we should consider the near-field intensity distribution. In this study, we calculated the luminous intensity distribution for single LED by the point source to superposition of way. The result of calculation and construction of the luminous intensity distribution of multiple chip LED in near-field region have to match in optical simulation software “Fred” pattern. Finally we measured in commercial reflector to compare with the single LED and multiple chip LED. The result showed near-field luminous intensity distribution for designing the reflector, or the luminous intensity distribution value will be trough phenomenon on 0 degree, and it will lead to severe deviation for optical design. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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