Columbia University, Northwest University and University of Tokio publish a paper "Stretchcam: Zooming Using Thin, Elastic Optics" by Daniel C. Sims, Oliver Cossairt, Yonghao Yu, Shree K. Nayar:
"Stretchcam is a thin camera with a lens capable of zooming with small actuations. In our design, an elastic lens array is placed on top of a sparse, rigid array of pixels. This lens array is then stretched using a small mechanical motion in order to change the field of view of the system. We present in this paper the characterization of such a system and simulations which demonstrate the capabilities of stretchcam. We follow this with the presentation of images captured from a prototype device of the proposed design. Our prototype system is able to achieve 1.5 times zoom when the scene is only 300 mm away with only a 3% change of the lens array's original length."
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