Germanium Neutral Density Filters Datasheets

Standard IR ND Filter, OD=0.3, 25mm diameter -- 030FNIR-25
from Andover Corporation

Metallic-coated neutral density (ND) filters obtain their optical density from a metal alloy coating on a substrate determined by the wavelength region of interest. Unlike the all- dielectric or absorption type, the metallic type ND filter employs a combination of absorption and reflection to reduce... [See More]

  • Substrate Material: Germanium
  • Surface Quality: 80-50 Scratch / Dig
Filters
from CVI Laser Optics

Filters are used to control the wavelength or intensity of light.   The incredible breadth of filters available directly from CVI Laser Optics makes it easy to find the right balance between optical performance, laser damage threshold, reliability, and cost for your application.   Our... [See More]

  • Substrate Material: BK7 glass (optional feature); Optical Crown Glass (optional feature); UV grade Fused Silica (optional feature); Germanium (optional feature)
  • Filter Shape: Circular
  • Neutral Density Filter Type: Reflective (optional feature); Absorptive (optional feature)
  • Filter Diameter, Side Length, or Rectangular Length: 12.7 to 102
IR Neutral Density Filter, 2.0 OD, 25mm Dia -- NT64-356
from Edmund Optics Inc.

Spectrally Flat from 2 μm to 14 μm. Precision Germanium Substrate. Our IR Neutral Density Filters feature excellent linearity over a wide spectral band of 2 μm to 14 μm. Ideal for thermal and medical imaging, the filters are available in 5 densities and 2 size options. Attenuation is... [See More]

  • Substrate Material: Germanium
  • Filter Diameter, Side Length, or Rectangular Length: 25
  • Filter Shape: Circular
  • Thickness: 1
Infrared Neutral Density Filters
from Newport Corporation

Made from Germanium material, these filters attenuate IR radiation from 2 to 14 µm. The one-inch diameter filters are coated with a spectrally neutral vacuum deposited metal alloy reflective coating. Attenuate IR radiation from 2 to 14 µm. High damage threshold up to GW/cm2. Precision... [See More]

  • Substrate Material: Germanium
  • Filter Diameter, Side Length, or Rectangular Length: 25 to 25.4
  • Filter Shape: Circular
  • Optical Density: 0.3000 to 3