◇ Neutral Density Filters

   Neutral Density Filters get a nearly flat transmittance from UV to NIR.

   Material:BK7grade A optical glass, Fused silica

   linearity Density  OD±5%

   Working Wavelength :UV,VIS,NIR

   Surface Quality: I-V

   Clear aperture:>90% diameter

   Damage threshold: 30W/cm² CW

   Application: Detector of photon, electronic image etc.

   Dimension, wavelength range ,OD or other request are available upon request.

  ◇ Linearly Variable Density Filters

   The optical density linearly varies across the length for measuring laser energe.

  ◇ Circularly Variable Density Filters

    The optical density linearly varies around a 0°-270° circle for measuring laser energe farthest.

    Material:BK7grade A optical glass, Fused silica

    Optical Density Range:OD0-OD4

    Linearity Density: OD±5%

    Coating:

 S1:Ni-Cr-Fe

 S2:Boardband AR coating

incidence angle:0°-15°

    Clear aperture:>80% diameter

    Damage threshold: 30W/cm² CW