Solar Optical Properties Laboratory

  • Transmittance and reflectance in the solar wavelength range
  • Goniometers for angle-resolved scattering
  • Thermal IR reflectnace of low emissivity materials

Solar Optical Properties Laboratory

Variable-angle spectroscopic ellipsometer in the 250-1700 nm wavelength range.
Measurement of spectrally resolved reflectance in the thermal IR range (5 to 25 micron) allows for calculation of thermal emissivity according to different standards such as NFRC 301 and EN 673. The instrument is also capable of measuring transmittance.
For direct measurement of the visible transmittance of large possibly nonuniform specimens we have an integrating sphere 2 meters in diameter.
Our optical instrument for measuring the full bidirectional transmittance and reflectance distribution functions (BTDF and BRDF) of light-scattering, light-redirecting and light-emitting materials.
Our portable emissometer has a built in heat source and detector which allows us to obtain hemispherical emissivity in the thermal IR range.
The Optronic Laboratories OL-750 is an instrument designed to measure angle-resolved scattering versus wavelength.
Measurements of solar spectral transmittance and reflectance as a function of wavelength are made with a scanning spectrophotometer. Our most modern UV-VIS-NIR spectrophotometer is the Perkin-Elmer Lambda 950 fitted with an 150 mm integrating sphere.