Half ball Lens
Half-ball lenses are hemispheres.Half-ball lens have uniform light dispersion and are commonly used in high power LED and UV LED, focusing and coupling light. It has many advantages over silicon lens and plastic lens.
Nova supply half-ball lenses are made from N-BK7, H-K9L, Fused Silica, Sapphire, and more. We can also deliver custom Half-Ball lenses and alternative materials in a range of diameters.
Technical parameters of half ball lens
Material | H-K9L/N-BK7,JGS1/UVFS ,Sapphire |
Diameter range | 1mm-25mm |
Diameter tolerance | +/-0.1mm |
Thickness tolerance | ±0.1mm |
Focal length tolerance | ±1 |
Surface accuracy | λ/10~λ/2,@632.8 nm |
Surface quality | 5/10;20/10;40/20,60/40 |
Clear aperture | >90% |
Coating | AR or customized |