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Lenses >> Air_spaced Achromatic Doublets

The achromatic-doublet consists of a positive low-index(crown) and a negative high-index(flint)lens. These lenses are computer-optimized and exhibit excellent paraxial performance, minimal spherical aberration, coma and smallest chromatic aberration.


Material OPtical crown and flint glasses or equivalent
Focal Length Tolerance 2%
Fringes Power 1-5
Fringes Irregularity 0.2-0.5
Diameter Tolerance 0/- 0.20 mm
Center Thickness(Tc) Tolerance 0/- 0.25 mm
Centration 3 arc minutes
Clear Aperture 90% of diameter
Surface Quality: 60-40 scratch and dig
Coating Singe-layer MgF2 AR Coateds

Note: Products are available upon request., Tel: 1-408-2448972, Fax: 1-408-2288789

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