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Photometric Testing Efficiency

Photometric Measurements of Optical Materials 

Photometric measurements for optical materials as you wish. For more information or RFQ, please contact us. The measurement prices are determined by the type, size and order-specific amount of the products to be measured.

Measurement of Retroreflectance

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
Reflectance Measurement Setup
Reflectance Measurement Setup

Standard-based and accurate reports in needed format quick and easy - our photometric experts are always here for your help


 Photometric measurement services for general lighting fixtures, signal lights, optical materials and detectors. 

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 factor BRDF

All our measurement equipment has been verified by reference measurements in the measurement standard laboratories in Finland and the Netherlands.


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