Description
Bi-convex Lenses have two outward curved surfaces, a positive focal length and are useful for 1:1 imaging and in multi-element systems.These lenses are designed to have a focal length of f= (R1*R2)/((n-1)*(R2-R1))
Bi-convex Lenses
|
Material: |
Optical
glass, BK7, Fused Silica, Schott, OHARA, CaF2, Germanium etc. |
|
Dimension
Tolerance: |
±0.1mm(Standard),
±0.01mm(High Precision) |
|
Center
Thickness Tolerance: |
±0.1mm(Standard),
±0.02mm(High Precision) |
|
Paraxial
Focal Length: |
±2% |
|
Surface
quality: |
60/40(Standard),
20/10(High Precision) |
|
Clear
Aperture: |
>85% |
|
Surface
Figure: |
λ/2(Standard),
λ/8(High Precision) @633nm |
|
Centration: |
3
arc minutes |
|
Bevel: |
<0.25mm×45° |
|
Coating: |
Upon requirement |
