Konica Minolta


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CAS 140CT IR array spectrometer

High-performance array spectrometers from Instrument Systems for precise measurements of all photo- and spectroradiometric quantities in the infrared spectral range.




  • Model versions from 780 nm to 2150 nm
  • In IR1 with additional high-sensitivity option
  • Cooled detector down to -20° C for minimum dark current
  • Spectrograph with excellent stray light suppression
  • Integral density filter wheel
  • Extensive SpecWin Pro spectral software


Fields of application:

SWIR measurements
Short wavelength infrared light (SWIR) is usually defined as light with a wavelength between 0.9 μm and 1.7 μm, sometimes also as the spectrum between 0.7 μm and 2.5 μm. The number of applications with sources in this wavelength range has increased considerably in recent years. It enables numerous applications that would be difficult or impossible with visible light. SWIR is used as the light source in various applications such as wearable devices, food analysis, drug discovery and healthcare. The industry is continuously working on increasing the optical output power and efficiency of SWIR LEDs to enable further fields of applications. With the CAS 140CT IR series models IR1 and IR2, Instrument Systems offers two spectrometers to cover the full SWIR spectral range. A broad range of accessories is additionally available for multiple measurement tasks. The high-sensitivity option facilitates measurement of low optical power light sources.

Transmission and reflection measurementsDue to high stability and stray light suppression, the CAS 140CT IR is also optimally suited to transmission and reflection measurements. Combined with the appropriate measurement adapter, the CAS 140CT IR is the ideal measurement system for the respective application. In addition to measurement tasks in the range of directional transmission, such as the examination of optical filters and lenses, it permits the examination of the diffuse transmission and reflection of scattering samples and solar cells.