Aspherical lenses have a refractive or reflective spherical whose form deviates from the ideal spherical surface.
Such lenses are described by an equation with quadratic, cubic and/or higher-order terms and help minimize imaging errors.
temicon supplies aspheric lenses. Aspheric lenses can have either a concave or convex orientation. For spherical lenses also, orientation is possible individually or as an array (microlens array, MLA).
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