Qmini - Miniature spectrometer for industrial use

The Qmini from Broadcom is a miniature spectrometer designed for industrial applications and integration into systems.
With a choice of optical gratings in this matchbox-sized spectrometer, different wavelength ranges can be covered from 220 to 1100 nm. It is delivered ready for immediate use and has integrated electronics with short sensor readout times. Broadcom spectrometers are supplied with a software package for general applications.

A special SDK provides a library for the .NET environment and contains sample code for C++, Python, Delphi, LabVIEW, Matlab and others.

All device interfaces (USB, SPI and UART) are supported and can be easily integrated into existing applications.


  • Particularly small dimensions (64 mm x 42 mm x 14.5 mm)
  • High optical resolution of 0.5-1.5 nm (depending on the grating used, see table)
  • Input slit 20 µm
  • Output range 1300:1
  • Numerical aperture 0.1, stray light <1 %
  • 2500 pixel Si CCD detector
  • Integration times from 30 µs to 30 min
  • 16 bit A/D converter


  • Advanced onboard processing and evaluation
  • High thermal stability < 0.013 nm / K
  • Complete system calibration
  • Software and SDK included in the scope of delivery
  • Flexible digital interfaces (USB, SPI, UART)
  • OEM-compatible


  • Chemical and biomedical analysis
  • Process and quality control
  • Light and color analysis
  • Environmental monitoring
  • Food safety
  • Pharmaceutical analysis
  • OEM processes
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    Available optical gratings

    Wellenlängenbereich (nm)Spektrale Auflösung (nm, FWHM)
    UV220 - 4000,5
    VIS370 - 7500,8
    NIR730 - 10800,8
    (Sensitivität maximal bei 300 nm)
    225 - 10001,5
    (Sensitivität maximal bei 500 nm)
    225 - 10001,5
    VIS/NIR480 - 11001,5