LED illuminating device for stage lighting and method for improving color uniformity of the device
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United States of America Patent
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Dec 29, 2015
Grant Date -
Jun 21, 2012
app pub date -
Jul 30, 2010
filing date -
Jul 31, 2009
priority date (Note) -
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Abstract
A LED illumination device for stage lighting includes LED arrays (110) packaged on a heat dissipating substrate and including a plurality of LED chips (111), a light combining device (200) for combining the light emitted by respective LED arrays (110), and a focusing lens (400) for focusing the combined light to a light output port. The illumination device further includes a fly-eye lens pair (300) disposed between the light combining device (200) and the focusing lens (400). The fly-eye lens pair (300) comprises two fly-eye lenses, each being formed of a plurality of lens units (310) tightly connected together and having the same lens surface curvature. A method for improving color uniformity of the device is also provided.
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