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Zenith Polymer® Reflectance Targets

Pure PTFE Reflectance Targets

All SphereOptics GmbH Zenith Polymer® products are made from our proprietary Zenith Polymer® reflectance material. This highly reflecting, PTFE-based material is resistant to harsh environments and exposures and its unique optical properties, when produced under strict clean conditions, makes it the ideal reflectance material for standards or targets.
Our products are all produced using the highest purity PTFE powder material available in Germany and throughout the production process, including pressing and sintering, the highest level of cleanness is maintained. All machines used to obtain the final product are reserved exclusively for PTFE use to keep the high level of purity.
Manufactured in Germany under ISO/TS 16949 conditions, we act as a reliable and qualified partner in the European industry.

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  • Non-polar, insulator, hydrophobic
  • Chemically inert, exception: reacts with organic Lithium and Sodium compounds
  • Usable temperature range: – 50 °C to 250 °C
  • Usable humidity range: 5 % to 95 %, but water absorption bands will be visible
  • Standard pore sizes 1 – 20 μm, average 6 μm, Standard pore sizes 1 – 20 μm, average 6 μm
  • Customer specific sizes and reflectivities on request
  • Nearly ideal lambertian, diffuse reflectance of 99 %
  • constant reflection over the wavelenght range 250 – 2450 nm
  • Tolerance in reflectance value depending on batch in range of +/- 3 %
  • Certified calibration using a PerkinElmer Lambda 950, which is traceable to PTB and NIST
  • Surface reflectance is constant in range of +/- 1 % R
  • Laser damage threshold: 8 J/cm²  pulsed laser
  • Remote Sensing: in field calibration of portable spectrometers
  • Definition of contrast for cameras calibration
  • Homogen projection walls, for inspection and quality control of projectors and projectors lamps
  • Presentation screens
  • Environment laser targets
  • Environment test targets
  • Light source characteristic and behavior
  • Referencing of integrated devices in airplanes, helicopter and military vehicles of any kind

Datasheets

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