A double-convex lens is compose of two convex surfaces, has a positive focal length. Normally Bi-Convex lenses are most suitable where the object and image are on opposite sides of the lens, and are popular for many imaging applications.
Specifications:
Material |
BK7, Fused Silica, Ge, Si, CaF2... |
Diameter |
1.5-300mm |
Surface Figure |
λ/2 |
Diameter Tolerance |
+0.1, -0.1 mm |
Thickness Tolerance |
±0.2 mm |
Paraxial Focal Length |
±2% |
Centration |
< 3 arc minutes |
Clear Aperture |
>85% |
Surface Quality |
60-40 scratch and dig |
Coating |
Specified by customers |