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SWIR Spectral Cameras

The Spectral Camera SWIR consists of an ImSpector N25E imaging spectrograph for the wavelength range 970-2500nm and a cooled, temperature stabilised MCT detector.

The transmission diffraction grating and lens optics used in the spectrograph provide a high quality, distortion free image, which is designed to meet the unique requirements of the associated detector.

The rugged camera housing is designed for easy connectivity and operation. The camera is delivered with separate power supply / temperature control unit, frame grabber and the necessary cables.

Unique Dual Cooling Solution

The MCT detector provides the highest sensitivity in the full SWIR range. Gilden Photonics and Specim’s dual cooling solution keeps the detector chip in the required operating temperature of < 200 K and stabilises the total detector package temperature. It is designed to minimise the dark current and  ensure high stabililty in the detector operations in a wide ambient temperature range. It makes the camera a real tool for process and outdoor uses.

This Spectral Camera is also supported by SpectraSENS software


Spectrograph ImSpector N25E -
Spectral Range 970 - 2500 ± nm
Spectral Resolution 10 (30um slit) nm (μm)
Spectral Sampling / Pixel 6.3 mn
Spatial Resolution rms spot radius <15 μm
Aberrations Insignificant astigmatism, smile or keystone < 5 μm
Numerical Aperture F / 2.0 -
Slit Width Options 30 (50 and 80 um optional) μm
Effective Slit Length 9.6 mm
Total Efficiency (typical) >50% independent of polarisation -
Stray Light < 0.5% halogen lamp, 1400 nm notch filter) -
Camera MCT camera -
Pixels in Full Frame 320 (spatial) x 256 (spectral) -
Actie Pixels 320 (spatial) x 240 (spectral) -
Pixel Size 30 x 30 μm
Cooling 4-stage Peltier for detector array, additional Peltier for active cooling for the detector package -
Camera Output 14-bit LVDS /USB -
Signal - to - Noise Ratio 800:1 (at max, signal level) -
Data Cable Length 5 meters -
Frame Grabber National instruments PCL-1422 -


Exposure Time Range 0.1 - 20 ms
Power Consumption < 200 W
Input Voltage 24 V
Camera Control Serial Port -
Frame Rate 100 fps (maximum full frame -
Size (L x W x H) Sensor Power Supply -
106 x 87 x 110 100 x 63 x 30 mm³
Body Anodised aluminium and painted steel with mounting screws -
Lens Mount Standard C-Mount -

Gilden Photonics can provide various accessories for the SWIR Spectral Camera to broaden its applicability.

Objective lenses, corrected for 900 - 2500 degrees with FOV 36, 24, 18 and 10 degrees and with focal lengths of 15, 22.5, 30 and 56mm, respectively.

In addition to standard lenses, also a 900 - 2500 nm corrected 1:1 imaging macro lens, OLESMacro, is available for NIR and SWIR.


  • Chemical imaging for R&D
  • Process analytical technologies
  • Pharmaceutical manufacture
  • Plastics sorting
  • Mineral mapping
  • Food and agriculture
  • Moisture content distribution
SWIR Spectral Cameras

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  • NIR Spectral CamerasNIR Spectral Cameras
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Contact us

Gilden Photonics Ltd.
Unit 13 Telford Court
9 South Avenue
Clydebank Business Park
Glasgow G81 2NR

tel: +44 (0)141 952 9475
fax: +44 (0)141 952 9400