@inproceedings{84e869442619491a8725e4f22d080a48,
title = "Design of a compact and high-resolution image scanner with large depth-of-field based on compound eye system",
abstract = "The compound eye optical system has attracted much recent attention, owing to its large field-of-view, compact structure, and rapid imaging capabilities. We designed a compact image scanner (cross-section 36.5 mm × 17 mm) based on the compound eye system. A single imaging unit is mainly composed of two freeform mirrors and a flat mirror, and its field-of-view in object space reaches 10 mm. The modulation transfer function of the system is greater than 0.6 at 12 cycles/mm corresponding to Nyquist spatial frequency of 600 dots per inch in depth-of-field of 0~4 mm. Furthermore, a larger field-of-view is achieved by splicing multiple imaging units with 1-mm overlap in object space. An object-side telecentric system is used to obtain constant magnification at different object distances and the distortion (<1 μm) is controlled by freeform mirrors. The final image is obtained by image splicing. The imaging quality of the scanner is further improved by eliminating stray light.",
keywords = "Compact structure, Compound eye system, Freeform surface, Image scanner",
author = "Weixing Lei and Dewen Cheng and Tong Yang and Yue Liu and Hailong Chen and Yongtian Wang",
note = "Publisher Copyright: {\textcopyright} 2020 SPIE.; Optical Design and Testing X 2020 ; Conference date: 11-10-2020 Through 16-10-2020",
year = "2020",
doi = "10.1117/12.2574980",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Yongtian Wang and Kidger, {Tina E.} and Osamu Matoba and Rengmao Wu",
booktitle = "Optical Design and Testing X",
address = "United States",
}