High throughput and robust spectrometer modules for OEM integration

The ROCK NIR spectrometers offer the market’s highest throughput industrial grade spectrometers. These benefits are accomplished by our highly efficient in-house manufactured transmission gratings and a high numerical aperture 0.22 (f/2.2) nearly on-axis beam geometry in the optical bench.

The ROCK NIR spectrometers enable better sensitivity and/or lower optical light input power than traditional spectrometers.

Contact Ibsen to get more information

Key Features

  • 900 to 1700 nm wavelength ranges
  • Numerical aperture of 0.22
  • Configurable resolution from 3 nm to 16 nm (typical)
  • Symmetrical peak shapes
  • Athermal optical bench


RSM-445Hamamatsu G9214-512 InGaAs TE-cooled detector arrayNIR range
RSM-420Hamamatsu G9203-256 InGaAs TE-cooled detector arrayNIR range

Download Product Sheets

pdf_icon Product sheet – ROCK-NIR 900-1700nm

How to Use your Spectrometer

You can couple into your spectrometer both by free space or via fiber.

You also have several options for reading out over a standard interface like USB or SPI with our different electronics options, which you can see here.


Request a quotation here for any of our ROCK spectrometers. If you have special requirements for resolution, detector, or wavelength range just enter those into the “Request quotation” form.

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