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Proceedings Paper

Fabrication of singulated micro-retro-reflectors for textured surfaces
Author(s): Menelaos K. Poutous; Michael J. Maston; Stephen Leibholtz; Eric G. Johnson
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Paper Abstract

The application of clusters of independent micro-retro-reflectors on various surfaces is of interest for cases of detection, identification and optical discrimination; both for distance viewing and machine remote vision. We present the fabrication steps for singulated micro-retro-reflectors using conventional photolithography and optical coating processes. The micro-optical elements presented here retro-reflect coherent or incoherent interrogating light beams, at large distances, with a high optical signal-to-background ratio. Due to the unpredictable topography of target surfaces, it was desirable for the individual retro-reflectors to be small (<50μm on a cube side or diameter on a sphere), but not as small as to be biological inhalation hazards. They were also required to be chemically inert. The retro-reflectors were tested at visible and near infrared wavelengths.

Paper Details

Date Published: 11 February 2011
PDF: 5 pages
Proc. SPIE 7927, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IV, 79270J (11 February 2011); doi: 10.1117/12.875352
Show Author Affiliations
Menelaos K. Poutous, The Univ. of North Carolina at Charlotte (United States)
Michael J. Maston, VizorNet, Inc. (United States)
Stephen Leibholtz, VizorNet, Inc. (United States)
Eric G. Johnson, The Univ. of North Carolina at Charlotte (United States)


Published in SPIE Proceedings Vol. 7927:
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics IV
Winston V. Schoenfeld; Jian Jim Wang; Marko Loncar; Thomas J. Suleski, Editor(s)

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