
Source: BMW AG

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Sponsored by EU Seventh Framework Programme
Information and Communication Technologies (ICT)
ICT-2007.3.5 - Photonic Components and Subsystems
Small or medium-scale focused research project (STREP)
Grant No. 223989 |
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The ICU project is a collaborative strategic research project in which six of Europe’s leading companies and research establishments have joined forces. ICU aims at prototyping a low-cost infrared night vision system that can resolve a pedestrian or animal on the road. The infrared imaging system will be developed to provide high contrast images of warm (living) objects completely independent of ambient light conditions and is expected to considerably increase safety on the roads. The ICU project is supported by the European Community in the framework of the FP7 Information and Communication Technologies Programme.
Far infrared (FIR) imaging provides a high-contrast signal for warm (living) objects. This makes FIR imaging systems very attractive for the detection of living objects and thereby helping to reduce fatalities and injuries. However, the cost of FIR night vision enhancement systems for automotive use must come down significantly to enable high volume fitment rates.
The photonic components developed in ICU include an infrared lens system, an infrared bolometer array, a wafer-level vacuum package and the component assembly. The infrared components are matched to achieve optimum cost and performance. The essential novelty in ICU are infrared bolometer arrays made of a new, mono-crystalline SiGe/Si quantum well material, providing increased temperature coefficient of resistance (TCR) and improved 1/f noise properties as compared to state-of-the-art infrared bolometers. The bolometers will be manufactured using heterogeneous 3D MEMS integration that is compatible with standard MEMS foundry services. A low-cost wafer-level vacuum packaging process will be developed that can consistently achieve vacuum levels in the sealed cavities on the order of 0.001 mbar. The system will be the first application of multilevel diffractive optics in FIR, with the added feature that the optics can be integrated in the package using MEMS-based 1st level camera integration. Furthermore the developed lenses will be compatible with low-cost processes and lens material.

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