Dayoptics (Fuzhou, China) produces cylindrical lenses from a variety of materials including BK7, fused silica, sapphire, CaF2, and MgF2 as standard. Cylindrical lenses focus light in only one dimension and are commonly used in range finders to produce astigmatism. Cylindrical lenses are also used in semiconductor diode lasers as FAC lenses. Lens dimensions range from 1mm × 1mm to 100mm × 100mm.
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