標題: An electrically tunable depth-of-field endoscope using a liquid crystal lens as an active focusing element
作者: Chen, Hung-Shan
Chen, Ming-Syuan
Lin, Yi-Hsin
光電工程學系
Department of Photonics
關鍵字: Liquid Crystal Lens;Endoscope;Depth of field;DOF
公開日期: 2013
摘要: An electrically tunable depth-of-field (DOF) endoscope using a liquid crystal lens (LC lens) as an active focusing element is demonstrated. The optical mechanism of the electrically-tunable DOF endoscope adopting a two-mode switching LC lens is introduced. The two-mode switching LC lens provides not only a positive lens power but also a negative lens power. Therefore, we could extend the range of DOF originally from 27 mm similar to 55 mm to 12.4 mm similar to 76.4 mm by using the two-mode switching LC lens as an active focusing element. The detail derivations of the optical mechanism of the endoscopic system adopting a LC lens are invistgated. The more detail experimental results are demonstrated. We believe this study can provide a more detail understanding of an endoscopic system adopting a tunable focusing lens.
URI: http://hdl.handle.net/11536/23133
http://dx.doi.org/10.1117/12.2025379
ISBN: 978-0-8194-9678-2
ISSN: 0277-786X
DOI: 10.1117/12.2025379
期刊: LIQUID CRYSTALS XVII
Volume: 8828
顯示於類別:會議論文


文件中的檔案:

  1. 000326702100026.pdf