Optomechanical design and manufacturing techniques for compact multimodal endoscopes (Conference Presentation)

David Vega; Gabriella Romano; Jennifer K. Barton

doi:10.1117/12.2504985

4 March 2019 Optomechanical design and manufacturing techniques for compact multimodal endoscopes (Conference Presentation)

David Vega, Gabriella Romano, Jennifer K. Barton

Author Affiliations +

Proceedings Volume 10854, Endoscopic Microscopy XIV; 108540H (2019) https://doi.org/10.1117/12.2504985
Event: SPIE BiOS, 2019, San Francisco, California, United States

Abstract

Multimodal endoscopes are highly complex and difficult to miniaturize, thus packing multiple optical systems into them requires ingenuity, creativity and a special set of optical design and optomechanical skills. While multimodal and miniaturized endoscope systems are becoming a hot topic nowadays, few designs have been explained in enough detail for the scientific community to utilize this knowledge. We present our approach to the design and manufacturing of an endoscopic prototype that encapsulates Optical Coherence Microscopy (OCM), Multi Photon Microscopy (MPM), and White Light navigation. In order to successfully encapsulate all three optical modalities in the endoscope, two optical paths were enabled in the same optical elements through the use of dichroic surfaces. One of the optical paths had to be bent to allow high resolution microscopy. The optics within the endoscope are aligned by the custom distal ferrule and a lens stacking technique. Additionally, a compact piezo actuator tube is used to scan the field of view for all imaging modalities, while 3D printed parts have been designed to accommodate the endoscope’s specific needs. To manufacture the prototype, custom 3D printed holders are used to facilitate the positioning, handling and cleaning of such small lenses and system parts. These holders were proven to be very beneficial and useful for the integration of the endoscope. While it is challenging to assemble such small endoscopes by hand, there are some techniques that can be used to facilitate the process, allowing encapsulation of multiple functionalities in the same optical system.

Conference Presentation

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David Vega, Gabriella Romano, and Jennifer K. Barton "Optomechanical design and manufacturing techniques for compact multimodal endoscopes (Conference Presentation)", Proc. SPIE 10854, Endoscopic Microscopy XIV, 108540H (4 March 2019); https://doi.org/10.1117/12.2504985

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KEYWORDS

Endoscopes

Design for manufacturability

Optics manufacturing

Optomechanical design

Microscopy

Prototyping

Endoscopy

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