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Plano-Cnvex Spherical lenses

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  • Plano concave lenses are manufactured with one concave surface and one plane surface. They have negative focal lengths. These lenses are often used to expand light or to increase focal lengths in existing systems.
    Focal Length: n:refractive index
    R:radius curvature

Specifications

  • 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 arcmin
    Surface Quality: 20/10
    Clear Aperture: >90% of central diameter
    Coating: According to the requirements