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Symmetric-convex Spherical lenses

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  • Symmetric convex lenses are fabricated with the identical convex surface on both sides of the lens. Due to the symmetry, aberrations such as coma, distortion and chromatic aberration are almost cancelled out. These lenses may be combined with other lenses to form complex imaging systems.
  • Focal Length: n:refractive index
    R:radius curvature


Material: Crown, Flint, UVFS
Focal Length Tolerance: ±0.5%
Diameter Tolerance: +0/-0.2mm
Thickness Tolerance: ±0.2mm
Surface Flatness: λ/10
Centration Error: <3'
Surface Quality:


Clear Aperture: >90% of central diameter
Coating: According to the requirements