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Wide-angle and ultrathin camera module using a curved hexagonal microlens array and all spherical surfaces

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Abstract

In this paper, we propose a wide-angle and thin camera module integrating the principles of an insect’s compound eye and the human eye, mimicking them with a curved hexagonal microlens array and a hemispherical lens, respectively. Compared to typical mobile phone cameras with more than four lenses and a limited full field of view (FFOV), the proposed system uses only two lenses to achieve a wide FFOV. Furthermore, the thickness of our proposed system is only 2.7 mm. It has an f-number of 2.07, an image diameter of 4.032 mm, and a diagonal FFOV of 136°. The results showed good image quality with a modulation transfer function above 0.3 at a Nyquist frequency of 166cycles/mm.

© 2014 Optical Society of America

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