LIU Qi-neng, LIU Qin,. Illumination Uniformity of Large LED Rectangular Array[J]. Chinese Journal of Luminescence, 2018,39(5): 699-705 DOI: 10.3788/fgxb20183905.0699.
Illumination Uniformity of Large LED Rectangular Array
Using the illumination formula of single LED wick and the symmetry of large LED rectangular array illumination distribution
a physical model for the illumination uniformity of large LED rectangular arrays was established. The illumination uniformity of large LED rectangular array was derived. This formula is used to study the illumination uniformity of large LED rectangular arrays with the target distance and the ratio of length to width and the
m
values. The illumination uniformity doesn't linearly decrease with the increasing of the target distance
doesn't linearly increase with the increasing of the ratio of length to width
and linearly increases with the increasing of
m
value. These rules provide theoretical basis for improving the uniformity of large LED rectangular arrays
the research direction and calculation method are provided for the illumination uniformity design of large LED rectangular array. It makes up for the lack of the uniformity of LED array illumination.
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references
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