Compact dual-view endoscope without field obscuration

J Biomed Opt. 2015 Jul;20(7):76007. doi: 10.1117/1.JBO.20.7.076007.

Abstract

We have developed a compact dual-view endoscopic probe without field obscuration to address the need of simultaneously observing forward and backward fields of view (FOVs) in the colon. The objective is compact with the forward-view and rear-view optical paths sharing the same optical elements. The compact objective is new in that no FOV is blocked. The illumination for forward-view imaging is provided by the cylindrical light guide and backward illumination is achieved with a reflector. We have designed, prototyped, and tested the endoscope by comparing it to a standard clinical colonoscope. We will discuss the system concept, objective design, fabrication of the freeform lens, and test results.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Colonoscopy
  • Computer-Aided Design
  • Endoscopes*
  • Endoscopy / instrumentation*
  • Endoscopy / methods*
  • Equipment Design
  • Humans
  • Models, Biological