Home / Custom / Optical Components / Optical Spherical Lens / Half Ball Lens 
Ball lenses are completely spherical lenses most commonly used to couple light in and out of fibers. Half-ball lenses are hemispheres.Ecoptik China supplies bespoke ball and half-ball lenses to our customer’s specifications. Ball lenses can be manufactured in quartz to have excellent UV and IR transmission between 185nm to 2000+nm, while sapphire lenses have a higher refractive index allowing a very short fall back length to better facilitate fiber coupling.
Optical glass such as K9, fused silica, sapphire, MgF2, silicon (Si), ZnSe, ZnS, etc. These materials possess high transmittance, low absorption, low scattering, uniform refractive index, and specific dispersion characteristics.
Precisely hemispherical. The machining precision of the center and radius of curvature of the sphere is extremely high.
The surface is precision polished to an optical grade of 10-5 to ensure image quality and reduce scattering and aberrations.
An AR coating is typically applied to the concave surface to maximize the transmittance of specific wavelengths of light (e.g. visible light) and reduce reflection loss.
Material | optical glass (VIS glass， UV fused silica, Silicon, sapphire etc.) |
|---|---|
Diameter | 0.2mm-100mm |
Diameter Tolerance | +0.0-0.05mm |
Surface Qualty | 60/40, 40/20.20/10 |
Surface Frigure | lambda/2~lambda/8 |
Coating | as customer's request |
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