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Optica Publishing Group
  • Current Optics and Photonics
  • Vol. 1,
  • Issue 4,
  • pp. 336-343
  • (2017)

Wide Field-of-View Imaging Using a Combined Hyperbolic Mirror

Open Access Open Access

Abstract

A wide field-of-view (FOV) image contains more visual information than a conventional image. This study proposes a new type of hyperbolic mirror for wide FOV image acquisition. The proposed mirror consists of a hyperbolic cylindrical section and a bowl-shaped hyperbolic omnidirectional section. Using an imaging system with this mirror, it is possible to achieve a 213.8° horizontal and a 126.94° vertical maximum FOV. Parameters of each section of the mirror are designed to be continuous at the junction of the two parts, and the resultant image is seamless. The image-acquisition model is obtained using ray-tracing optics. To rectify the geometrical distortion of the original image due to the mirror, an image-restoration algorithm based on conformal projection is presented in this study. The performance of the proposed imaging system with the hyperbolic mirror and its image-restoration algorithm are verified by experiments.

© 2017 Optical Society of Korea

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