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Half Balls

Half balls are widely used in LED industry, especially for high power and UV LED. Half balls are with much more advantages than silicone lens and plastic lenses.
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Material:Sapphire,fused silica,BK7
Surface Figure:λ/2
Diameter Tolerance:+0.1, -0.1 mm
Thickness Tolerance:±0.2 mm
Clear Aperture >85%
Surface Quality:60-40 scratch and dig
Coating :Specified by customers

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