We manufacture a series of spherical lens, including plano convex lens, plano concave lens, bi-convex lens, bi-concave lens, meniscus lens and achromatic lens. Specifications Material: Optical glass, fused silica … Dimension: 1 - 500mm Dimension tolerance: + / - 0.02mm Surface quality: Up to 10-5 Surface accuracy: Up to lambda/10 Centration: 3 arc minutes Clear aperture: > 90% Coating:　 According to the requirement