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DAkkS Accredited Reflectance Measurements

SphereOptics provide DAkkS accredited measurement service (DIN EN ISO/IEC 17025:2018) for spectral reflectance ϱ8/h(λ) according to DIN 5036 Part 3: 11.79 of diffusely reflecting materials. The measurements are done in the wavelength range from 250nm to 2450nm, which meets the constantly increasing demands on accuracy and confidence of the industry on a full surveilled process traceable to a national standard (PTB).

Our calibration laboratory provides service for the measurement of our Standards and Targets, as well as for samples, that are provided by the customer.

The calibration of the measurement objects is done with a PerkinElmer Lambda 950 double beam spectrophotometer with 150 mm integrating sphere for the measurement of hemispherical reflection. The Lambda 950 is a high-performance UV/Vis/NIR spectrometer system, which was especially developed for the spectral analysis of surface properties. The spectrometer with the integrating sphere accessories offers the possibility to determine the 8°/hemispherical reflection of materials.

Calibration according to DIN EN ISO/IEC 17025 of own optical materials as well as of customer’s own products (recalibration):

  • 8°/hemispherical measurement geometry
  • Wavelength range from 250 to 2450nm
  • Measuring interval 1 nm
  • Dimensions of calibration objects between 28 and 100mm diameter; up to 40mm thickness
  • Calibration object must have a flat side to be able to fully contact the sample port
  • Calibration object must be solid or abrasion resistant
  • Output of measurement data as DAkkS calibration certificate and on digital medium
  • Traceability to PTB calibration certificate


Typical Application Areas:

  • LiDAR references
  • 1D and 2D sensors calibration
  • Medical Applications
  • White References for Remote Sensing


Note: Calibration laboratory accredited by the DAkkS according to DIN EN ISO/IEC 17025:2018. The accreditation is only valid for the scope of accreditation listed in the annex K-19933-01.