Multiresolution foveated laparoscope with high resolvability

Yi Qin, Hong Hua, Mike Nguyen

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


A key limitation of the state-of-the-art laparoscopes for minimally invasive surgery is the tradeoff between the field of view and spatial resolution in a single-view camera system. As such, surgical procedures are usually performed at a zoomed-in view, which limits the surgeon's ability to see much outside the immediate focus of interest and causes a situational awareness challenge. We proposed a multiresolution foveated laparoscope (MRFL) aiming to address this limitation. The MRFL is able to simultaneously capture wide-angle overview and high-resolution images in real time; it can scan and engage the high-resolution images to any subregion of the entire surgical field in analogy to the fovea of human eye. The MRFL is able to render equivalently 10 million pixel resolution with a low data bandwidth requirement. The system has a large working distance (WD) from 80 to 180 mm. The spatial resolvability is about 45 μm in the object space at an 80 mm WD, while the resolvability of a conventional laparoscopeis about 250 μm at a typically 50 mm surgical distance.

Original languageEnglish (US)
Pages (from-to)2191-2193
Number of pages3
JournalOptics letters
Issue number13
StatePublished - Jul 1 2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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