The NDIR10-30 Infrared Neutral Density Filter is a 1 inch (25.0 mm) diameter filter with an optical density of 3.0, and +0.08/-0.05 % transmittance tolerance. Optimized for 2 to 5 μm, this filter attenuates IR radiation from 2 to 14 μm. It is made from a germanium substrate and is coated with a spectrally neutral vacuum deposited metal alloy reflective coating.

• 尺寸

  Ø25.0 mm

• 光学密度

  3

• 波长范围

  2000-5000 nm

• 材料

  Germanium

• 透射

  001

• 尺寸公差

  ± 0.2 mm

• 表面平面度

  3-5 λ per inch

• 表面质量

  60-40 scratch-dig

• 平行度

  < 10 arc minute

• 通光孔径

  90 % of central diameter

• 厚度

  1.0 mm

• 厚度公差

  ± 0.2 mm

• 镀膜类型

  Metallic Neutral Density

NDIR10-30红外中性密度滤光片为1英寸(25.0 mm)直径滤光片，光密度3.0，透射率公差+0.08/- 0.05%。为2至5μm优化,这个过滤器从2到14μm变弱红外辐射。它由锗基板制成，并涂有光谱中性真空沉积金属合金反射涂层。