... Quality20/10Bevel0.25mm at 45 degCoatingSingle or Multi-layer filmsOther lenses also can be make professionally:plano-convex lense, plano-concave ... ,double convex lense,double concave lense,meniscus lense,achromatic lense,cylindrical lense,spherical lense,aspheric lense etc. Plano-Convex ...