3D printed optomechanical positioners for aerospace metrological instruments

Andrew DeRusha; Hamil Patel; Abbey Havel; Giovanni Wancelotti; Zachary Rogers; Chelsea Kincaid; Garrett Mastantuono; Justin Urso; Nickolas Demidovich; Anthony C. Terracciano; Subith S. Vasu

doi:10.1117/12.2618890

27 May 2022 3D printed optomechanical positioners for aerospace metrological instruments

Andrew DeRusha, Hamil Patel, Abbey Havel, Giovanni Wancelotti, Zachary Rogers, Chelsea Kincaid, Garrett Mastantuono, Justin Urso, Nickolas Demidovich, Anthony C. Terracciano, Subith S. Vasu

Author Affiliations +

Proceedings Volume 12103, Advanced Optics for Imaging Applications: UV through LWIR VII; 1210308 (2022) https://doi.org/10.1117/12.2618890
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Additive manufacturing (AM, 3D printed) enables, among other advantages, the in-house fabrication of optomechanical components with minimal tooling investment and labor hours per finished part. Currently, supply chains for high-value optomechanical components are delicate and can be a potential area of concern for scheduling; there is an advantage from using bulk sourced filament and commercial off-the-shelf (COTS) components to meet design needs. Additionally, spacebased manufacturing can incorporate AM, where a remote design engineer transmits a part file to a permanent orbiting, Lunar, or Martian platform to facilitate and optimize the use of personnel hours. Herein, we describe the design objectives, process, and test evaluation for a versatile optomechanical positioner to incorporate an optical component (emitter, mirror, beam-splitter, etc.) to a precision instrument at a fixed location honed surface normal. The designed AM optical positioner (OP) is manufactured from low off-gassing nylon 6,6. It has incorporated low-mass components such as silicon carbide (SiC) to reduce further the mass of the kinematic systems with a minimum number of secondary tensioners and actuators. This positioner provides one degree of translational freedom (infinite translation), either along the optical path or normal to it, with two degrees of angular degrees of freedom (Δα_max= 189.2 mrad and Δβ_max= 375.9 mrad) with minimal off-axis shift about the rotation center. We have verified the designs in static tests and isothermal shake table tests.

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Andrew DeRusha, Hamil Patel, Abbey Havel, Giovanni Wancelotti, Zachary Rogers, Chelsea Kincaid, Garrett Mastantuono, Justin Urso, Nickolas Demidovich, Anthony C. Terracciano, and Subith S. Vasu "3D printed optomechanical positioners for aerospace metrological instruments", Proc. SPIE 12103, Advanced Optics for Imaging Applications: UV through LWIR VII, 1210308 (27 May 2022); https://doi.org/10.1117/12.2618890

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KEYWORDS

Aerospace engineering

Sensors

Carbon monoxide

Light emitting diodes

Manufacturing

Silicon carbide

Optical components

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