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imec demonstrerer SWIR-baseret hyperspectralt kameraHyperspectral imaging in SWIR range with imec’s LS 100+ bands in 1.1 – 1.7µm range enables classification of nuts versus their nut’s shells

imec demonstrerer SWIR-baseret hyperspectralt kamera

I forbindelse med SPIE Photonics West i San Francisco demonstrerede forskningscentret imec verdens første 'Shortwave Infrared (SWIR)' program af hyperspectrale imaging kameraer (in english).

imec, a world-leading research and innovation hub in nanoelectronics and digital technologies, demonstrated an infrared  (SWIR) range hyperspectral imaging camera at last week's SPIE Photonics West in San Francisco.

The SWIR range provides discriminatory information on all kinds of materials, paving the way to hyperspectral imaging applications in food sorting, waste management, machine vision, precision agriculture and medical diagnostics. Imec's SWIR camera integrates CMOS-based spectral filters together with InGaAs-based imagers, thus combining the compact and low-cost capabilities of CMOS technology with the spectral range of InGaAs.

Semiconductor CMOS-based hyperspectral imaging filters, as designed and manufactured by imec for the past five years, have been utilized in a manner where they are integrated monolithically onto silicon-based CMOS image sensors, which has a sensitivity range from 400 - 1000 nm visible and near-IR (VNIR) range. However, it is expected that more than half of commercial multi and hyperspectral imaging applications need discriminative spectral data in the 1000 - 1700 nm SWIR range.

- SWIR range is key for hyperspectral imaging as it provides extremely valuable quantitative information about water, fatness, lipid and protein content of organic and inorganic matters like food, plants, human tissues, pharmaceutical powders, as well as key discriminatory characteristics about plastics, paper, wood and many other material properties, says Andy Lambrechts, program manager for integrated imaging activities at imec.

- It was a natural evolution for imec to extend its offering into the SWIR range while leveraging its core capabilities in optical filter design and manufacturing, as well as its growing expertise in designing compact, low-cost and robust hyperspectral imaging system solutions to ensure this complex technology delivers on its promises. 

Imec's initial SWIR range hyperspectral imaging cameras feature both linescan 'stepped filter' designs with 32 to 100 or more spectral bands, as well as snapshot mosaic solutions enabling the capture of 4 to 16 bands in real-time at video-rate speeds. Cameras with both USB3.0 and GIGE interface are currently in the field undergoing qualification with strategic partners.

- The InGaAs imager industry is at a turning point, explains Jerome Baron, business development manager of integrated imaging and vision systems at imec.
- As the market recognizes the numerous applications of SWIR range hyperspectral imaging cameras beyond its traditional military, remote sensing and scientific niche fields, the time is right for organizations such as imec to enable compact, robust and low-cost hyperspectral imaging cameras in the SWIR range too. Imec's objectives will be to advance this offering among the most price sensitive volume markets for this technology which include food sorting, waste management and recycling, industrial machine vision, precision agriculture and medical diagnostics.
5/2 2018
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