Biconvex lenses

Biconvex lenses are all symmetrical, having equal radii on both sides. They are recommended for virtual imaging of real objects, and for positive conjugate ratios from 0.2 up to 5. Outside of this ratios range plano-convex lenses are usually more suitable Detailed Product DescriptionWe make lenses with diameter from 1.0mm to 300mm by optical glass or optical crystals, such as BK7, fused silica, CaF2.Our standard lens has the following specifications: Material: grade A BK7, fused silica, sapphire, or CaF2 Diameter tolerance: +0.0, -0.12mm Paraxial focal length tolerance: ±2% Centralization: 3arcmin Clear aperture: >85% Surface figure: 1/2 at 632.8nm Surface quality: 60/40 scratch/dig Bevel: 0.25mm x 45° Coating: uncoated or coated upon requests We supply standard lens (please visit our website for standard lenses) and customized or OEM lenses upon customers' requests. Our Products are fully customisable, your further requests are welcome!