16 February 2011 Correcting distortion and braiding of micro-images from multi-aperture imaging systems
Author Affiliations +
Multi-aperture imaging systems inspired by insect compound eyes promise advances in both miniaturization and cost reduction of digital camera systems. Instead of a single lens stack with size and sag in the order of a few millimeters, the optical system consists of an array of microlenses. At a given field of view of the complete system, the focal lengths of the microlenses is a fraction of the focal length of a single-aperture system, reducing track length and increasing depth of field significantly. As each microimage spans only a small field of view, the optical systems can be simple. Because the microlenses have a diameter of hundreds of microns and a sag of tens of microns, they can be manufactured cost-effectively on wafer scale and with high precision. However, reaching a sufficient resolution for applications such as camera phones has been a challenge so far. We demonstrate a multi-aperture color camera system with approximately VGA resolution (700x550 pixels) and a remarkably short track length of 1.4 mm. The algorithm for correcting optical distortion of the microlenses and combining the microimages into a single image is the focus of this presentation.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alexander Oberdörster, Alexander Oberdörster, Andreas Brückner, Andreas Brückner, Frank C. Wippermann, Frank C. Wippermann, Andreas Bräuer, Andreas Bräuer, } "Correcting distortion and braiding of micro-images from multi-aperture imaging systems", Proc. SPIE 7875, Sensors, Cameras, and Systems for Industrial, Scientific, and Consumer Applications XII, 78750B (16 February 2011); doi: 10.1117/12.876658; https://doi.org/10.1117/12.876658

Back to Top