Imaging Components, Systems, and Processing

Fabrication of a chirped artificial compound eye for endoscopic imaging fiber bundle by dose-modulated laser lithography and subsequent thermal reflow

[+] Author Affiliations
Shengfeng Deng, Jinke Lyu, Tun Wang, Miao Lu

Xiamen University, Pen-Tung Sah Institute of Micro-Nano Science & Technology, MEMS Research Center, Xiamen 361005, China

Hongda Sun, Xiaobin Cui

Xiamen University, Pen-Tung Sah Institute of Micro-Nano Science & Technology, MEMS Research Center, Xiamen 361005, China

Xiamen University, Department of Mechanical and Electrical Engineering, Xiamen 361005, China

Opt. Eng. 54(3), 033105 (Mar 18, 2015). doi:10.1117/1.OE.54.3.033105
History: Received October 9, 2014; Accepted February 27, 2015
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Abstract.  A chirped artificial compound eye on a curved surface was fabricated using an optical resin and then mounted on the end of an endoscopic imaging fiber bundle. The focal length of each lenslet on the curved surface was variable to realize a flat focal plane, which matched the planar end surface of the fiber bundle. The variation of the focal length was obtained by using a photoresist mold formed by dose-modulated laser lithography and subsequent thermal reflow. The imaging performance of the fiber bundle was characterized by coupling with a coaxial light microscope, and the result demonstrated a larger field of view and better imaging quality than that of an artificial compound eye with a uniform focal length. Accordingly, this technology has potential application in stereoscopic endoscopy.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Shengfeng Deng ; Jinke Lyu ; Hongda Sun ; Xiaobin Cui ; Tun Wang, et al.
"Fabrication of a chirped artificial compound eye for endoscopic imaging fiber bundle by dose-modulated laser lithography and subsequent thermal reflow", Opt. Eng. 54(3), 033105 (Mar 18, 2015). ; http://dx.doi.org/10.1117/1.OE.54.3.033105


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