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Proceedings Paper

Wide-angle lens for miniature capsule endoscope
Author(s): Mang Ou-Yang; Yung-Lin Chen; Hsin-Hung Lee; Shih-chieh Lu; Hsien-Ming Wu
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Paper Abstract

In recent years, using the capsule endoscope to inspect the pathological change of digestive system and intestine had a great break-through on the medical engineering. However, there are some problems needs to overcome. One is that, the field of view was not wide enough, and the other is that the image quality was not enough well. The drawbacks made medical professionals to examine digestive diseases unclearly and ambiguously. In order to solve these problems, the paper designed a novel miniature lenses which has a wide angle of field of view and a good quality of imaging. The lenses employed in the capsule endoscope consisted of a piece of plastic aspherical lens and a piece of glass lens and compacted in the 9.8mm (W) *9.8mm (L) *10.7mm (H) size. Taking the white LED light source and the 10μm pixel size of 256*256 CMOS sensor under considerations, the field of view of the lenses could be achieved to 86 degrees, and the MTF to 37% at 50lp/mm of space frequency. The experimental data proves that the design is consistent with the finished prototype.

Paper Details

Date Published: 25 February 2006
PDF: 8 pages
Proc. SPIE 6080, Advanced Biomedical and Clinical Diagnostic Systems IV, 608010 (25 February 2006); doi: 10.1117/12.645731
Show Author Affiliations
Mang Ou-Yang, National Central Univ. (Taiwan)
Yung-Lin Chen, National Central Univ. (Taiwan)
Hsin-Hung Lee, National Central Univ. (Taiwan)
Shih-chieh Lu, EVEREST Display Inc. (Taiwan)
Hsien-Ming Wu, Chung-Shan Institute of Science and Technology (Taiwan)

Published in SPIE Proceedings Vol. 6080:
Advanced Biomedical and Clinical Diagnostic Systems IV
Gerald E. Cohn; Warren S. Grundfest M.D.; David A. Benaron M.D.; Tuan Vo-Dinh, Editor(s)

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