Bena offers a variety of aspherical products, including coaxial aspherical lenses, off-axis aspherics, free-form lenses, mirrors, etc., including fused silica, zerodur, SiC, Si and others. It is processed by cutting-edge machining equipment including ring throttling machines, IBF, MRF, CCOS and measured by CMM, Luphoscan.
The initial structure of a freeform surface can be obtained by gradually approximating from a spherical or aspherical surface, or by performing ray tracing to obtain a point cloud and then conducting surface fitting.
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