iHR320 / iHR550 Imaging Spectrometers

Mid-Focal Length Imaging Spectrometers

The iHR Series of 320 mm and 550 mm focal length high performance and versatile imaging spectrometers are HORIBA’s most popular and iconic spectrometers. The iHR series is built on decades of experience in spectroscopy and represents the highest quality, performance and versatility of any spectrometers in this class. The iHR 320 and iHR 550 spectrometers are immediately recognizable around the world by their unique shape, the result of a superior optical design. These spectrometers benefit from the highest quality of gratings, also designed and manufactured by HORIBA. The iHR series is ideal for applications such as:

  • Raman
  • Fluorescence
  • Photoluminescence
  • Absorbance / Transmission / Reflectance / Emission Analysis

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What makes the iHR series imaging spectrometers better:

No one has more experience in designing and manufacturing imaging spectrometers than HORIBA Scientific. When we designed the iHR we made a quantum leap forward in the traditional Czerny-Turner design and developed an asymmetrical spectrometer that is patented and immediately recognizable by its distinctive shape and design. With zero re-diffracted light, correction for optical aberrations, multi-track image capabilities and more options than any competitor, the iHR series offers best in class performance and flexibility


The iHR series of spectrometers stand out in the field of standard Czerny-Turner spectrometers. They are manufactured from a single solid casting to eliminate light leaks and provide the strongest, most stable possible housing for the instrument. The computer optimized asymmetric optical path and patented on-axis grating drive improve image quality, while eliminating re-diffracted light and maximizing optical throughput. In addition, use of toroidal mirrors corrects for astigmatism at the centre of the focal plane, providing flexibility to work in either an imaging or resolution optimized configuration.
The iHR series spectrometers are fully automated; all motors are computer controlled including slits, gratings, turret rotation, and swing mirrors. There are four optional ports, two entrance and two exit, that can be utilized in any combination of two inputs and two outputs. The two optional output ports can be configured with either slits or array flanges for use with multichannel detectors.


The monochromator slits are adjustable automated slits with two available options; 0 to 2 mm opening with 2.25 micron step size and 0 to 7 mm opening with 6.25 micron step size. A manually adjustable height limiter allows the user to quickly shut or open the light path to 1 mm and 15 mm heights.
You can add accessories to the HR series spectrometers to obtain optimum results for a variety of applications. To attach the accessories to the iHR, use the two tapped holes on the body of the slit. These holes are also useful for connecting the iHR with your experiments and equipment. When connecting with the iHR, it is important to know the distance from the mounting face of the slit’s body to the slits.

Spectroscopy Cameras

HORIBA Scientific offers a complete line of spectroscopic multi-channel detectors for scientific research. For spectral detection from UV to near-IR, two dimensional CCDs and indium gallium arsenide linear arrays offer a faster acquisition option over single point detectors with very high sensitivity. Coupled with HORIBA’s range of aberration corrected, flat field imaging spectrographs, custom spectroscopy packages can be assembled for a
variety of applications. To learn more, click here.

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