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Linear Apodizing ND Filters

About REYNARD

  • Type: Filters
  • Diameter / Dimension: 25mm - 200mm
  • Filter Category: Neutral Density Filter
  • Applications: Astronomy, Biomedical/Medical, Communications, Industrial, Military, Scientific Research, Other
  • Dimensions: 25mm × 50 mm + custom
  • Optical Density: 0.04 - 1, 2, 3, 4 or 5
  • Material: BK-7 or equivalent
  • Surface Quality: 80-50 scratch/dig
  • TWE: < 2 Waves Per 25mm
  • Wavelength Calibration: 510nm or 2500nm

Inserting a variable ND transmission filter at the aperture stop will modify the diffraction pattern of a lens. The reduced transmission at the center of the aperture will favor performances at high frequencies, while reducing transmission at the edge will favor low-frequency performance.

Apodizing filters are used to eliminate intensity variations in optical systems such as in spectrometers.

Inserting a Linear Apodizing filter in front of a detector can be used as a soft slit to reduce diffraction patterns, eliminate detector saturation, and obtain a uniform light intensity to the detector.

Customizable density gradient filters that have constant density in one direction and variable neutral density filter in the other direction.

Two Types:
Dark Center: From a dark center to the outside edge, where it can become completely transparent.

Clear Center: Filter function increases in density linearly from a clear center to darker outside edge.

ISO 9001:2015, ITAR, Cybersecurity


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