Ultra-compact and cost-efficient OEM spectrometer modules for the visible to near-infrared range

The PEBBLE VIS-NIR spectrometers offer a cost-efficient mini spectrometer module for OEM manufacturers of analytical instruments that do not want to sacrifice performance and robustness for compactness.

PEBBLE VIS-NIR is based on the same proven diffraction grating technology used in all other Ibsen spectrometers. This ensures that PEBBLE can be manufactured in high quantities with very small unit-to-unit performance variation.

This type of diode array spectrometer provides many benefits when used for absorption or fluorescence spectroscopy compared to optical-based filter instruments. In particular, the fluorescence spectrometer is less bulky and more inexpensive than the combination of several emission filters. The compact spectrometer is also easier to use and provides the full spectrum.

The miniature PEBBLE VIS-NIR spectrometer covers a wavelength range of 500 – 1100 nm and offers a resolution of 8 nm. It utilizes a fast S14739 CMOS detector from Hamamatsu.

If the specifications of our standard PEBBLE configurations do not match your requirements, Ibsen can customize an OEM spectrometer to meet your exact needs.

Order PEBBLE VIS-NIR Evaluation Kit Now

Key Features

  • 500 to 1100 nm wavelength range
  • Numerical aperture of 0.22
  • Resolution: 8 nm (typical)
  • Fast and very sensitive CMOS detector array with 256 pixels
  • Electronics interface: small flex-connector
  • Optional SMA fiber adapter and order sorting filter
  • Compact footprint of 20 mm x 15 mm x 8 mm – ideal for handheld devices

Test it yourself!

We understand that it can be hard to judge the performance of a spectrometer just from the data sheet. Therefore, we offer a time limited loan of a demo unit to customers that meet certain criteria.


PBT-105Hamamatsu S14739Cost effective, high sensitivity

Contact Ibsen to get more information

Download Product Sheets


Request a quotation here for our compact PEBBLE VIS-NIR spectrometer. If you have special requirements for resolution, detector, or wavelength range just enter those into the “Request quotation” form.

Noise in detectors for Spectroscopy

Measuring Fluid Fluorophores with a Compact PEBBLE VIS Spectrometer

Using our 3D-printed front end demo together with our compact PEBBLE VIS fluorescence spectrometer, we measured fluid fluorophores at the Department of Chemistry of Copenhagen University. The measurements were carried out on a variety of fluid fluorophotes such as fluorescein, rhodamine, ADOTA, Cresyl Violet and DMQA.

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