Photometric Testing Solutions
/ SERVICES / OPTICAL MATERIALS AND COMPONENTS
Photometric Measurements of Optical Materials
Measurement of Retroreflectance
We offer standard-based and accurate reports in needed format quickly and easily. In our large goniophotometer measurement rail, the coefficient of luminous intensity of retroreflectors can be measured according to with connected setup of our Goniometer type B and retro light source-detector system. The setup involves both LED and Xenon light sources to illuminate the test reflector, and both photometer class L and colorimeter class A. To reach sufficient distance of 30 meters we use a mirror to reach it.
We can measure following parameters with our retroreflectance setup:
- Coefficient of the luminous intensity (cd klx¯¹)
- Coefficient of retroreflection (cd lx¯¹ m¯²)
- Retroreflected color
The measurements follow the standasds CIE 054.2-2001 and SFS 5908.
Reflectance and Transmittance Measurements of Optical Materials and Components
We offer a variety of photometric measurement services for lighting components and materials. This measurement service is needed e.g. in the selection of printed circuit board (PCB) coatings and optical materials, as well as for the efficiency measurement of optics components. The measurements are performed using the integrating sphere testing system and BRDF goniometer.
For example, we measure the following parameters:
- Effective optics efficiency (lens, reflector, diffuser)
- Effective photometric reflection coefficient (PCB, reflector)
- Spectral Transmittance, reflectance, diffusivity
- Bi-directional reflectance/transmittance factor BRDF/BTDF
All our measurement equipment has been verified by reference measurements in the measurement standard laboratories in Finland and the Netherlands.