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Artificial compound eye for robotic applications

European scientists develop artificial insect eyes miniature


The "CURVACE" project received €2 million in EU funding to develop the miniature "insect" eyes, which have high industrial potential in mobile robotics, smart clothing and medical applications.

In most animal species, vision is mediated by compound eyes, which offer lower resolution than vertebrate single-lens eyes, but significantly larger fields of view with negligible distortion and spherical aberration, as well as high temporal resolution in a tiny package.

In the future, the artificial compound eye could be used in areas where panoramic motion detection is primordial. For instance, a flexible artificial compound eye could be attached around automobiles for efficient obstacle detection (e.g. during parking manoeuvres, for automated vehicle guidance, or for the detection of vehicles or pedestrians that are getting too close), or implemented in Micro Air Vehicles (MAVs) for vision-based collision-free navigation (e.g. during landing or for obstacle avoidance, such as in rescue operations). Due to their inherent low thickness and flexibility, they could also be integrated in tissues to make smart clothes, such as smart hats with collision-alert systems for visually impaired people. Moreover, flexible artificial compound eyes could be attached to the walls and furniture of intelligent homes for motion detection (e.g. for the elderly in ambient assisted living scenarios, or for children in an accident prevention role).

The compound eye features characteristics and functionality similar to the eye of the Drosophila fruit fly, and other arthropods. The eye, a small (12.8 mm diameter, 1.75 grams) cylindrical object is made up of 630 "basic eyes", called ommatidia, arranged in 42 columns of 15 sensors each. Each ommatidium is composed of a lens (172 microns), combined with an electronic pixel (30 microns). These sensors have advanced optical properties, such as an undistorted panoramic field of view of 180°x60° and a large depth of field, and can to adapt to a wide variety of lighting conditions.

The project involves 5 collaborating institutions: EPFL (Switzerland), University of Aix-Marseille and CNRS (France), Frauenhofer Institute for Applied Optics and Precision Engineering (Germany), and the University of Tübingen (Germany) working together for 45 months.

The budget of the entire project is 2.73 million euro, with 2.09 million coming from EU financing.

Of interest