کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
851874 909342 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modified wide radiating lenses of the power-chip light emitting diodes for a direct-lit backlight
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Modified wide radiating lenses of the power-chip light emitting diodes for a direct-lit backlight
چکیده انگلیسی

Modified wide radiating lenses of the power-chip light emitting diodes (LEDs) for a direct-lit backlight unit of a liquid crystal display (LCD) are numerically investigated. To improve the optical properties of the backlight, the lens of the Golden DRAGON® ARGUS® LED, the cluster of LEDs, and the cluster arrangement for the 32-in bottom-lit backlight unit of a LCD are modified and verified by optical tracing simulation software. First, the central section shape is modified and analyzed to reduce the angular luminous intensity in the small angle range. The results show that the modifying lens method can effectively realize the aim. Then, several LEDs with the modified lenses are put in 32-in backlight. It is shown that the uniformity and efficiency of the new backlight are obviously better than the ones of the original type.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 121, Issue 9, May 2010, Pages 847–852
نویسندگان
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