Process photometer
ELDIM

ELDIM has been manufacturing viewing angle instruments based on Fourier optics for more than 15 years. One of their key features is the patented optical configuration which allows controlling the angular aperture of the system independently of the measurement spot size. Extreme grazing angles (88°) are measured with an excellent accuracy thanks to a very high light collection efficiency .

High speed
The full viewing cone is measured with high incidence and azimuth angular resolution within seconds for luminance and chromaticity and minutes for radiance.

High accuracy
Every ELDIM system follows a strict manufacturing and calibration procedures. Spectral response of each CCD sensor is measured and each filter -designed on purpose- is controlled by spectro-photometry.

High efficiency
ELDIM uses a patented optical configuration that allows optimum light collection even at very high angles. This cosine compensation matches the behavior of a spectro-photometer on a goniometric stage.

High reliability
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 also performed in house to reduce straight light and parasitic polarization.