B&M is now offering customers sample cases of optical lenses. Three different types are available. The lenses are arranged conveniently in attractive display cases. One type contains 16 samples of ground and polished optics, for example, planed and biconvex lenses, achromats, aspherical (diameter 22.4mm; focal length from 18.0 to 200.0mm) as well as concentrating and plane reflectors, prisms, cylindrical lenses and a frame. The other two types contain moulded lenses of various shapes with diameters from 3.65mm to 68.0mm.
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