Abstract
Light-emitting diodes (LEDs) are gradually becoming the
preferred choice for many lighting applications that require uniform illumination
distribution. LED sources are usually composed of several individual LEDs
which must be mounted on a panel as a lighting module. Therefore, the design
is quite important for achieving a good uniform illumination distribution
before a LED lighting module is produced. This paper presents a theory and
design method by systemic concepts and focuses on the study of optical properties.
We can design, efficiently, a LED lighting module and achieve a satisfactory
uniformity by this theory and method, the
design of a uniform LED illumination system. By this method, we
not only obtain the maximally flat illumination distribution but also the
emitting angle of the system can be designed at will. This method and theory
will offer a preferable choice when LED lighting modules become the main stream
for the lighting market in the future. Here, the light source is approximately
defined as a point light source with cosine irradiance distribution.
© 2009 IEEE
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