Wei-Lun Liang and Guo-Dung J. Su, "Wide-angle and ultrathin camera module using a curved hexagonal microlens array and all spherical surfaces," Appl. Opt. 53, H121-H128 (2014)
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 -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 .
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Note: Surface 5: ➀, ➁, ➂, ➃, ➄, ➅ mean six different types of microlenses. We use the same color to illustrate the six types in Fig. 7. Surface 6 is also the substrate of MLA, and the substrate radius is 2 mm.
Note: Surface 5: ➀, ➁, ➂, ➃, ➄, ➅ mean six different types of microlenses. We use the same color to illustrate the six types in Fig. 7. Surface 6 is also the substrate of MLA, and the substrate radius is 2 mm.