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Zenith Polymer® – Foil for Diffuse Reflectance and Transmittance

  • Nearly ideal lambertian, diffuse transmittance of about 50, 25, 16, 8 und 4 %
  • Nearly ideal lambertian, diffuse reflectance of about 95, 90, 50, 20 und 5 %
  • Constant reflection over the wavelenght range 250 – 2450 nm
  • Tolerance in reflectance value depending on batch in range of +/- 3 %
  • Surface reflectivity is constant in range of +/- 1 % R
  • Laser damage threshold: 8 J/cm²  pulsed laser

Short Description

SphereOptics provides a large spectrum of Zenith Polymer® diffusers. Those diffusers are available in several different sizes, thicknesses (those define the percentage of transmission) and reflection characteristics. It is possible to attach high level gluing foil on a Zenith Polymer diffuser, which allows an easy processing.

Properties

  • Non-polar, insulator, hydrophobic
  • Chemically inert, exception: reacts with organic Lithium and Sodium compounds
  • Usable temperature range: – 5 °C to 250 °C
  • Humidity in range 10-90 %
  • Zenith Polymer diffusers are made in sizes 20 x 20 cm, 50 x 50 cm (and 100 x 100 cm)
  • Customer specific sizes and reflectivities on request
  • Calibration on PerkinElmer Lambda 950 possible on request

Applications

  • Field calibration of portable spectrometers (Remote Sensing)
  • Contrast measurements for camera applications
  • Homogeneous projector walls for inspection and quality check of whole projectors and projector lamps
  • Presentation screens
  • Environment laser targets
  • Environment test targets
  • Light source characteristics and patterns
  • Reflectance standard for illumination measurements and calibrations