NIR spectrometers for system integration
Choosing the right NIR spectrometer for your application
NIR spectrometers are crucial tools for analyzing samples in the near infrared spectrum (typically 900 – 2100 nm). NIR instruments utilize a light source and a spectrometer to measure the absorbance or emission of light by a sample. When selecting a NIR spectrometer, it is essential to consider the specific application requirements, such as wavelength range, resolution, sensitivity, and stray light performance.
The resolution of the spectrometer determines its ability to distinguish between closely spaced spectral features, which is vital for accurate analysis. Sensitivity and stray light performance are also critical, as they affect the spectrometer’s ability to detect low concentrations of analytes in a large dynamic range.
Our NIR spectrometers are designed to provide high sensitivity and resolution, making them ideal for diverse applications, including absorption spectroscopy. They feature advanced optics and electronics to ensure precise measurements and can be easily integrated into OEM systems. Furthermore, our compact design and robust construction make them suitable for industrial environments.

Best in class broadband gratings for NIR spectrometers
The high sensitivity of our NIR spectrometers is obtained through in-house manufactured transmission gratings.
Our gratings provide unparalleled high broadband efficiency, enabled by optimized groove profiles, a thin optical path, and a high refractive index contrast. The inherent nature of fused silica ensures our gratings are environmentally stable while working in transmission, providing angle insensitivity and vibrational stability.
We design our visible light spectrometers to perfectly match and supplement the performance of our gratings, but we also supply gratings for use in your own NIR spectrometer design.

Our NIR spectrometers
Parameter | Unit | ROCK NIR | PEBBLE NIR | ROCK XNIR |
---|---|---|---|---|
Wavelength range | nm | 900 - 1700 | 950 - 1700 | 1100 - 2100 |
Best resolution (Typical values)1) | nm | 3.3 | 9.5 | 5.6 |
Numerical aperture | 0.11 or 0.22 | 0.22 | 0.11 or 0.22 | |
Optical input | SMA | SMA or free space | SMA |
|
Detector options | Hamamatsu G11508-256 Hamamatsu G11508-512 | Hamamatsu G13913 | Hamamatsu G11477-256 Hamamatsu G11477-512 |
|
Electrical interface | SPI or USB | SPI or USB | SPI or USB | |
Dimensions | mm x mm x mm | 123 x 148 x 48 | 23 x 21 x 8 | 131 x 149 x 54 |
1) Other resolutions are obtainable with different slit sizes. Please, note that resolution can be influenced by specific detector type.
ROCK NIR
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PEBBLE NIR
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ROCK XNIR
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Ibsen as your NIR spectrometer manufacturer
At Ibsen, we understand that volume manufacturing of application-specific NIR spectrometers is a completely different task than building a single scientific instrument. We are an ISO 9001 and 13485 certified manufacturer with decades of experience in volume manufacturing of OEM spectrometers.
Our emphasis is on the high and consistent quality of our products, ensured through our proven, robust designs and 100% outgoing inspection. Especially for laser induced breakdown spectroscopy, our low unit-to-unit variation can help you achieve a lean manufacturing process and deliver products with a consistently high quality to your customers.
Our spectrometer designs have undergone environmental qualification to ensure proper operation within specified thermal, humidity, vibrational, and drop test conditions.
We have established long-term relationships with a range of qualified sub-suppliers, ensuring you a stable supply chain. Furthermore, we offer our OEM customers flexible supply options, typically based on frame order contracts or Kanban agreements.
All in all, Ibsen Photonics is a well-established spectrometer supplier that enables you to focus on your core business.
Advantages working with Ibsen:
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