Positive achromatic lens performs similar function as a PCX or DCX lens, but can provide smaller spot sizes and superior image quality. Achromatic lenses are useful for reducing spherical and chromatic aberration.  
Please contact us at info@goldenvueoptics.com for any custom design. Thanks!
General specs:
Diameter:
+0.0/-0.1mm
Center Thickness:
±0.2mm
Focal Length:
±2%
Surface Quality:
60/40
Power(P-V):
1.5 lambda @632.8nm
Irregularity(P-V):
lambda/4 @632.8nm
Centration:
3 ~ 5 arc min.
Bevel:
0.2mm x 45°
Coating:
Single layer MgF2@550nm