Bi-Convex Lens

Bi-convex lenses
are manufactured with an identical convex surface on both sides of the lens.
bi-convex lenses have positive focal lengths and form both real and virtual images.
Material: BK7 or schott material
Diameter tolerance: +0, -0.1mm
Focal length tolerance: 1%
Center thickness tolerance: 0.1mm
Centration:< 3 arc min
Surface quality: 20-10
Coatings:Antireflection coatings or NIR coatings or no