Precision aspheric lenses are produced by computer control technology (CNC). By using CNC machine grinding and polishing methods, large-diameter (≥ 10mm) aspheric lenses can be manufactured, and the lenses still have near-field diffraction limitation performance. For instance, the wavefront error of a 15mm diameter, CNC-polished aspheric lens is generally 20 to 50 times less than that of a mold-formed lens. Aspheric lenses have been optimized to focus the light incident on the aspheric side of the lens, achieving the minimum spherical aberration. The numerical aperture range of Ø 10mm - Ø 100mm lenses is from 0.23 to 0.61. Low numerical aperture (< 0.3) is suitable for applications that maintain a specific beam shape, while high numerical aperture (>0.4) has a strong light-concentrating ability and can also reduce spherical aberration. Each lens has undergone a strict inspection procedure. The measurement laboratory uses Zygo Veritre ™, NewView™ and GPI™ interferometers to generate three-dimensional mapping maps of the optical surfaces of lenses without contact. In addition, the PGI Dimension5XL surface profilometer can perform contact measurement on optical components.
We offer uncoated lenses. Customers can apply optical coating according to their own needs.
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