Multispectral imaging systems generate different images of the same object at different wavelengths. Compare to color imaging this technique is much more powerful avoiding metamerism problems and analyzing in depth the light emission properties of any object. Until now, this technology has been limited to select military, medical and scientific applications. Indeed, absolute measurements are quite difficult to obtain using most of these techniques. We present here a system that allows absolute multispectral measurements in the visible range with excellent accuracy.

UMaster-MS includes a true 16-bit Peltier cooled CCD camera , different filter wheels with band pass filters and imaging objective telecentric on sensor side.

High accuracy
ELDIM is manufacturing on its own all the key components of its systems. The quality of the optics is optimum thanks to advanced technologies such as magneto-rheological polishing or stitching interferometry. Antireflective coatings and optical alignments are performed in house to reduce straight light. The imaging objective is telecentric on the sensor side which ensures same light collection efficiency at each distance and the same transmittance in all the imaging field for the band pass filters.

High sensitivity
Peltier cooled CCD sensor with true 16-bit analog digital converter allows optimum sensitivity for UMaster MS. Large size CCD versions can be used to detect very low light levels while maintaining a good resolution.

High dynamic
Additional neutral densities are available to allow measurements of very bright sources.

High wavelength resolution & Nir
UMaster-MS uses high quality band pass filters. Two wavelength resolutions are available (10nm for MS1 and 20nm for MS2). All the visible wavelength range is covered (400-700nm). Near infrared filters up to 950nm can be available on request.

A range of imaging objectives
UMaster-MS is available with an objective of 8° aperture. Additional optics for high spatial resolution are also available.