ROCK Spectrometers

4 times better sensitivity !

The ROCK platform is a series of industrial grade, pre-configured OEM spectrometers that provide:

  • High optical throughput
  • Symmetrical peak shapes
  • Adaptation flexibility for customer specific detectors and electronics
  • Robust, athermal design
ROCK NIR Spectrometer

See the configurations options here: Standard ROCK, ROCK NIRROCK SW-NIR and ROCK XNIR.

If you have trouble getting enough light for your spectroscopy system, a ROCK spectrometer could be your answer.


Our spectrometers are well suited as the spectral engine in your analytical instrument for a wealth of applications in:

  • Health care and life science
  • Food and agriculture
  • Light measurement
  • Semiconductor manufacturing
  • Security
  • Biophotonics and pharmaceuticals

On our application pages you can find help to identify which of our spectrometer platforms best suits your needs.

High throughput by design

The ROCK spectrometers are based on a transmission geometry with two lenses and a transmission grating in a nearly on-axis beam geometry. This is in contrast to the typical Czerny-Turner design that uses two mirrors and a reflection grating in an off-axis beam geometry.

The on-axis geometry of the ROCK spectrometers enables a much larger acceptance angle for the input beam than the Czerny-Turner configuration and thereby a much higher amount of coupled light. The numerical aperture (NA) of the ROCK spectrometers are 0.22 (f-number of 2.2) whereas typical Czerny-Turner configurations are limited to NA of 0.11 to 0.16 (f-number of 3.5 – 4.5).

Furthermore, the ROCK spectrometers use transmission gratings with efficiency in the 70 – 90 % range, whereas typical blazed reflection gratings are limited to 30 – 60 %.

You can read much more about the benefits of transmission grating based spectrometers here.

Product list

DetectorDetector benefitsVIS
380-780 nm
550-1050 nm
815-1065 nm
900-1700 nm
1100-2200 nm
High sensitivity
Low cost
Hamamatsu S10420
High sensitivity
Medium S/N
Hamamatsu S8380-256
High S/N
High linearity
Hamamatsu S8381-512
High S/N
High linearity
Hamamatsu G9203-256
NIR range--RSM-420-
Hamamatsu G9214-512
NIR range--RSM-445-
Hamamatsu G9206-256
Extended NIR range---RSX-465


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.