LED LENS AND LED LIGHT SOURCE COMPRISING LED LENS
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United States of America Patent
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Issued Date -
May 4, 2017
app pub date -
Jun 19, 2014
filing date -
Jun 19, 2014
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Abstract
An LED lens and an LED light source having the LED lens are provided. The LED lens has a central curved surface and a bottom surface both located at an incident plane, a side surface, first and second upper curved surfaces all located at an emergent plane, and scattering microstructures located on the first and second upper curved surfaces. The positions of the scattering microstructures correspond to bright rings in LED light intensity distribution, scatter light that emerges out of the first and second upper curved surfaces and forms the bright rings. Therefore, the light at the bright rings is slightly scattered, light intensity at the bright rings is reduced, light intensity at dark rings of the LED light source is improved, and uniformity of light intensity distribution of the LED light source can be improved.
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