UV Neutral Density Filter -- Model NDU-0.04-50.8SQ
from Lambda Research Optics, Inc.

Optical density at 250nm, thickness 1-3mm [See More]

  • Filter Shape: Square
  • Filter Diameter, Side Length, or Rectangular Length: 50.8
  • Neutral Density Filter Type: Reflective
  • Optical Density: 0.0400
Absorptive Neutral Density Filter -- FSQ-OD05
from Newport Corporation

For lower power applications, precision polished [See More]

  • Filter Shape: Square
  • Filter Diameter, Side Length, or Rectangular Length: 50.8
  • Neutral Density Filter Type: Absorptive
  • Thickness: 3
Absorptive Neutral Density Filter -- Model 3651
from Optarius

Glass filters which absorb visible light with reasonable neutrality [See More]

  • Filter Shape: Square
  • Filter Diameter, Side Length, or Rectangular Length: 50.8
  • Neutral Density Filter Type: Absorptive
  • Rectangular Width: 50.8
65.001
from Rolyn Optics Company

Absorption filters may be neutral or spectrally selective. While spectral characteristics are customarily shown for a 1 mm thickness, the filters themselves are usually made thicker to minimize transmission differences caused by small variations in thickness occurring in manufacture. Because of... [See More]

  • Filter Shape: Square
  • Filter Diameter, Side Length, or Rectangular Length: 50.8
  • Neutral Density Filter Type: Absorptive
  • Optical Density: 0.1000