CAS 140CTS CCD Array Spectrophotometer


The CAS 140CTS is the newest member of the Instrument Systems Array Spectrometer family. It came out of the improvements and additions made to the very successful CAS 140CT. The biggest change was the redesign of the detector concept based on a back-thinned CCD area sensor. The new detector has improved the minimum integration time from 10ms to 4ms. Additionally, the read out time was sped up to approximately six seconds meaning you will get a shorter measurement time.

In addition to its robust construction, the CAS 140CTS is very quick, and has a high level of accuracy which allows the system to deliver reliable measurements in less than optimal environments. When used together with the Instrument Systems LED Tester, the CAS 140CTS is the leading measurement instrument for LED production testing.

The CAS 140CTS is ideal for all laboratory applications that require highly accurate measurements for critical parameters like color coordinates and color temperature.

PDF Click here for the CAS 140CTS Brochure.


  • A minimum time for integration of 4 ms Dynamic range is doubled over what could be achieved by the CAS 140CT
  • The detector concept is based on a back-lit, top-end CCD sensor
  • The PCI interface is robust and powerful
  • Various models are available from 200 to 1050 nm
  • Read-out times are rapid


  • LED production testing
  • All laboratory applications that require exceptional speed and high accuracy


Model Spectral range [nm] Number of pixels Spectral resolution [nm] *) Datapoint interval [nm]
CAS140CT-241 360 - 830 1024 x 128 2.2 0.5
CAS140CT-242 200 - 800 1024 x 128 2.7 0.6
CAS140CT-243 380 - 1040 1024 x 128 3.0 0.65
CAS140CT-244 220 - 1020 1024 x 128 3.7 0.8
CAS140CT-245 750 - 1050 1024 x 128 2.0 0.3
CAS140CT-246 300 - 1100 1024 x 128 3.7 0.8