Broadband, freeform focusing micro-optics for a side-viewing imaging catheter

Julien Bec, Cai Li, Laura Marcu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Successful implementation of a catheter-based imaging system relies on the integration of high-performance miniaturized distal end optics. Typically, compensation of chromatic dispersion, as well as astigmatism introduced by the device’s sheath, can be addressed only by combining multiple optical elements, adversely impacting size and manufacturability. Here, we present a 300 × 300 × 800 μm3 monolithic optic that provides high optical performances over an extended wavelength range (near UV-visible-IR) with minimal chromatic aberrations. The design of the optic, fully optimized using standard optical simulation tools, provides the ability to freely determine aperture and working distance. Manufacturing is cost effective and suited for prototyping and production alike. The experimental characterization of the optic demonstrates a good match with simulation results and performances well suited to both optical coherence tomography and fluorescence imaging, thus paving the way for high-performance multimodal endoscopy systems.

Original languageEnglish (US)
Pages (from-to)4961-4964
Number of pages4
JournalOptics Letters
Issue number20
StatePublished - Oct 15 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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