LMT® offers high precision instruments to determine lighting-specific properties of surfaces within the context of optical systems. These include the measurement of transmission as well as (retro-)reflective characteristics.

Usually, all properties of interest have to be measured within an application specific environment and/or geometry, which means that the measurement task must be clearly defined before the appropriate instrument may be chosen.

Retro Reflection

Retro reflection measurement systems for determination of reflex properties during night time acc. to UN-ECE, SAE, DIN, CIE requirements.

Reflection and Transmission

Reflectance and transmittance may be measured in different geometries using dedicated integrating sphere equipment.  Quality of visors or outer lenses in headlamps is tested with imaging methods which accumulate the scattered light in specific solid angles.