HERA
Iperspettrale
A new HERA in Hyperspectral Imaging
HERA eSWIR (1200-2200 nm)
An ultra-sensitive
Hyperspectral Camera
HERA eSWIR is a compact and rugged hyperspectral camera designed to revolutionize spectral imaging in the extended shortwave infrared range.
Utilizing its unique and patented technology based on Fourier Transform (FT) detection, HERA eSWIR delivers outstanding spatial-spectral resolution and superior sensitivity in low-light illumination conditions.
Lightweight, portable, and user-friendly, HERA eSWIR is ideal for a wide range of scientific and industrial applications, ensuring precision and reliability in every measurement.
- Patented Fourier Transform-based approach
- Superior Sensitivity
- Compact design
- User-friendly software
- Easy data integration
*The FOV can be modified by adding an extra lens (FOV Extender or Macro Lens) in front of the camera.
Spectral range
Extended InGaAs with TEC
Infinity
Working distance
Field of view*
Exceptional Light Throughput
Look at more specifications
| SPECIFICATION | ||
|---|---|---|
| Spectral range | 1200 - 2200 nm | |
| Sensor spatial resolution | 636 × 508 pixels | |
| User adjustable spectral resolution | <10 nm @ 1200 nm <30 nm @ 2200 nm | |
| Detector Type | InGaAs with TEC | |
| Number of bits | 14 bits | |
| Number of spectral bands | Selectable via Software* | |
| Field of view | 11 degrees** | |
| Working distance | 100 cm - ∞ | |
| Dimensions | 240 × 170 × 140 mm | |
| Weight | 4.6 kg | |
| Recommended System Requirements | 32 GB RAM, SSD drive suggested | |
* HERA is a FT spectroscopy based instrument and the number of extracted spectral bands can be chosen depending on the needs. Preset scan modes providing different spectral resolutions (and numbers of bands) are available in the Acquisition App software
** The Field of View can be extended (up to 18 degrees) or reduced (MACRO imaging) by adding optional lenses in front of the camera.
Additional accessories: SDK, FOV extender lens (FOV2), Macro Lens, Illumination System, Laptop, Spectralon, Tripod.
HERA eSWIR is a Dual-Use Product (Annex I of the EU Regulation 2021/821 and subsequent amendments, control code 6A003.b.4.a)
HERA eSWIR Working Principle
HERA eSWIR is based on a Fourier Transform (FT) approach: the data-cube is acquired in the time-domain, by step-scanning a compact ultra-stable interferometer in front of the sensor.
The software then automatically computes an FT at each and every pixel of the image, providing the final hyperspectral data-cube.
Features and Design
Spectral Resolution
As in any other FT techniques, the spectral resolution is not constant as a function of the wavelength.
Also, the spectral resolution can be simply varied via software: at each measurement, you can decide whether to acquire a high spectral resolution-image, or – if not required – a faster and lower spectral resolution-image (medium or low).
Regardless of this choice, the exceptional light throughput is not affected, thanks to the FT approach.
Hyperspectral in action
Exploit BUILT-IN FUNCTIONS or EXPORT the DATA in standard formats*
for an in-depth statistical analysis.
* Standard formats include Matlab, ENVI, Perception Studio, perClass Mira
HERA Software
The HERA App software is designed for data acquisition.
The HyperLAB software is designed for data analysis.
HERA Acquisition App
Set the camera parameters (such as spectral resolution, integration time, number of averages, etc.) and acquire the measurement.
Evaluate a preview of the hyperspectral data in the Hyperspectral View and save the measurement for a further analysis with HyperLAB software.
HyperLAB
Analyse spectra at selected points or areas, calculate reflectance images, perform statistical analysis with in-built functions and visualize the RGB or false-color image.
Save the hyperspectral data-cube and export it in standard formats for further analysis.
HERA eSWIR Main Applications
- Cultural Heritage
- Biology
- Food Inspection
- Vegetation
- Fluorescence
- Remote Sensing
- Microbiology
- Machine Vision and Material Sorting
- Food Inspection
- (Micro)-Biology
- Vegetation
- Cultural Heritage
- Material Science
- Remote Sensing
- Life Science
- Machine Vision and Material Sorting
HERA eSWIR Hands-on review
Optional
Accessories
FOV Extender
Additional lens to extend the field of view.
Macro Lens
Additional lens to perform macro imaging.
HERA Mask
Filter holder which can be directly screwed onto the threaded opening of the camera.
Reflectance illumination system
Light system (consisting of halogen lamps) easily attachable to the tripod, for illuminating the scene in your lab or in the field.
Light box illumination system
Light box illumination system (consisting of halogen lamps). Profiled-based mechanical structure (dimension 150×40×40 cm) including mechanical arm to attach the HERA, lights and power supply.
Spectralon
1-inch Diffuse Reflectance Standard, 99% reflectance, to calibrate the intensity of the hyperspectral data.
Laptop
Dedicated laptop to HERA, with 32 GB RAM, with HERA analysis and acquisition software packages pre-installed.
Tripod
Tripod compatible with the HERA hyperspectral camera.
Scientific papers
Find out more details regarding our technology in these scientific publications:
Hyperspectral Mycroscopy
A. Candeo et al., APL Photonics 4, 120802 (2019)
Hyperspectral Imaging
A. Perri et al., Optics Express 27, 15956 (2019)
NIREOS products are marketed and sold worldwide through our local offices and a global distribution network.
Any question?
Is HERA a push-broom or a snapshot hyperspectral camera?
HERA is not a push-broom, nor a filter based or a snapshot hyperspectral camera. It works with a staring approach, based on Fourier Transform. HERA embeds an ultra-stable and compact interferometer in front of a bidimensional sensor. This approach guarantees very high light throughput and a variable spectral resolution (easily adjustable via software), without compromising the spatial resolution.
The HERA can be easily mounted on a tripod, without the need to move the sample or the camera to acquire the hyperspectral image. The acquisition time of an entire hyperspectral cube is approximatively 10-30 seconds, depending on the chosen spectral resolution and illumination intensity. During this time, the sample and the camera should remain static with respect to each other.
How many Spectral Bands does it measure?
Unlike other hyperspectral cameras based on spectral filters or dispersive elements, with the Fourier Transform approach the number of bands does not depend on the hardware. In fact, as the spectrum at each pixel of the image is the Fourier Transformation of the interference signal, it is a continuous function (or curve). Of course, when plotting the data, one needs to sample the spectrum with a proper number of points. The number of points is chosen to match the actual spectral resolution of the measurement, which depends on the chosen Scan Mode.
What is the spectral resolution of the HERA?
There are three predefined interferometric scan modes (S, M, L) selectable via software. These determine the spectral resolution of the HERA. Please refer to the following graphs for the spectral resolution provided by the HERA depending on scan length:
The spectral resolution provided by the HERA is not constant as a function of wavelengths, but it increases at longer wavelengths. This behaviour is due to both the Fourier Transformation approach and the birefringence, which depends on the wavelength.
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