Organisation Details

The Light&Lighting Laboratory provides education, research and consultancy services in:

  • Lighting
  • Optical Design
  • Photovoltaïcs
  • Visual appearance
  • New light sources

The laboratory has measurement facilities to support these tasks.  (More information on www.lichttechnologie.be).

Gebroeders De Smetstraat 1
Gent 9000
Belgium



 

Areas of Activity

Lighting, optics, appearance, phosphors, light sources

 

Cooperation Profiles

Know-how: Measurement of light and visual appearance  

 

Description

The interaction between light and materials is an important issue for a lot of industries (glass, wood, plastics, metals, ...) .  This interaction determines the visual appearance, appreciation and quality assesment of objects.  Colour and gloss are the important attributes in these applications.

In the lighting industry, optical materials are used as diffusors, filters and reflectors.  Reflectance, transmittance, diffusing properties are used as the quality characteristics.

The Light&Lighting Laboratory from KU Leuven (campus Gent, Belgium) has the measurement equipment to provide services to these industries.

 

A spectral bidirectional scattering distribution function (BSDF) setup

The spectral Bidirectional Scatter Distribution Function (BSDF) characterizes the scattering properties of a material for any angle of illumination or viewing. In this way, it offers a complete description of the spectral and spatial optical characteristics. Any gloss or colour measurement can be related to a particular value of the BSDF. A measuring instrument allowing for an absolute determination of the spectral BSDF, with a full three dimensional spatial coverage in both reflectance and transmittance mode, a broadband spectral coverage, a large dynamic range, a reasonable acquisition time and a large sample illumination area, has been built.

 

Other equipment

The Laboratory is also equiped with following setups:

  • Goniometer to measure retro reflective devices
  • Luminance camera
  • Several colour measurement setups (reflection/transmission : 350nm to1200nm)
  • Gloss meter
  • Near-field goniometers
  • QE of phosphors

Examples of cooperation with industry:

 

  • Automotive industry: harmony of textures
  • Wood: gonio-apparent aspects
  • Plastics: colour and texture
  • Printing: colour reproducibility
  • Lighting: LID and ray files, secundary optics

Over 70 flemish companies are member of the consortium "Groen Licht Vlaanderen" hosted by the Laboratory.

 

Co-operation Type:

Offered: Technical Co-operation
Offered: Joint basic research project
Offered: Joint applied research project