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Proceedings Paper

Integration design of endoscopes with different viewing directions
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Paper Abstract

High definition and magnification rigid endoscope is a significant equipment in the examination and surgery. In this paper, the design of a high definition (HD) rigid endoscope is presented with a FOV of 70°. The entrance pupil is 0.3 mm, achieved for the first time to our best knowledge. For the fabricated prototype, the theoretical resolution is 22.3 lp/mm at an object distance of 20 mm, the depth of field (DOF) is 115 mm and the stray light is eliminated effectively. The viewing angle of the developed endoscope is zero. However, the endoscope with non-zero viewing angle is more popular in some conditions, we present two designs with non-zero viewing direction for better observation and diagnosis of lesions on inner walls of organs and tissues.

Paper Details

Date Published: 8 September 2015
PDF: 8 pages
Proc. SPIE 9578, Current Developments in Lens Design and Optical Engineering XVI, 957807 (8 September 2015); doi: 10.1117/12.2190711
Show Author Affiliations
Lingyun Zhang, Beijing Institute of Technology (China)
Dewen Cheng, Beijing Institute of Technology (China)
Yongtian Wang, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 9578:
Current Developments in Lens Design and Optical Engineering XVI
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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