Ball Microlenses

  • Ball lenses have a long tradition of manufacture and use.

    The ball lens Effective Focal Length (EFL) and Working Distance (WD) at the selected wavelength depend on the glass refractive index n and the ball diameter D as:

  • Ball Diameter Tolerance  +/- 0.005 mm
    Ball Roundness Deviation < 0.003 mm
    Drum Diameter Tolerance  +0.00 / -0.02 mm
    Square Dimension Tolerance  +0.00 / -0.02 mm
    AR Coating  R < 0.5%, AOI 0-30°