The SpectroMaster® HR Universal Goniometer-Spectrometer is the most accurate refractive index measurement system currently on the market.

Most accurate refractive index measurement system currently on the market with an accuracy of: 
UV 195 nm – 365 nm 3x10-6 
VIS 365 nm – 1014 nm 2x10-6
SWIR 1014 nm – 2325 nm 5x10-6
Motorized air bearing rotary table with axial and radial run-out errors smaller than 0.05 µm
High precision piezo motor drive
High measurement speed and high positioning accuracy
High performance off-axis parabolic mirrors with surface quality better λ/10
Off-axis mirror collimator and autocollimator with infinity setting
Geometric beam splitter design ensures wavelength-independent focusing over the full measurement range of the CCD
UV-enhanced coating for best reflectivity over the full spectral range of 195 - 2325 nm
Additional photo detectors are included besides the CCD. A cooled PbS-detector is used for the infrared and a photomultiplier for the UV .
A motorized filter changer wheel can be equipped with up to 17 narrow bandwidth interference filters for easy selection and identification of the measurement spectral line
Set of spectral lamps covering the spectral range from 195 nm up to 2325 nm
Complete instrument rack for all supply and control boxes

Applications

SpectroMaster® Goniometer-Spectrometers are used for high-precision determination of the refractive index and dispersion of optical glass and crystalline materials in the UV, VIS or IR spectral range.