Variation of Illumination Performance with Source Size and Tolerance Characteristics of Freeform LED Lenses
نویسندگان
چکیده
منابع مشابه
Freeform LED lens for uniform illumination.
Light flux from LED must be redistributed to meet the needs of lighting in most cases, a new method is proposed for its secondary optic design. Based on refractive equation and energy conservation, a set of first-order partial differential equations which represent the characters of LED source and desired illumination were presented. The freeform lens was constructed by solving these equations ...
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We present a simple freeform lens design method for an application to LED collimating illumination. The method is derived from a basic geometric-optics analysis and construction approach. By using this method, a highly collimating lens with LED chip size of 1.0 mm × 1.0 mm and optical simulation efficiency of 86.5% under a view angle of ± 5 deg is constructed. To verify the practical performanc...
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ژورنال
عنوان ژورنال: Korean Journal of Optics and Photonics
سال: 2013
ISSN: 1225-6285
DOI: 10.3807/kjop.2013.24.1.029