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Proceedings Paper

Design and fabrication of trihedral corner-cube arrays using analog exposure based on phase masks
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Paper Abstract

Trihedral corner cube arrays are efficient retro-reflectors. They are integral parts in numerous imaging and sensing applications. However, the fabrication of these trihedral arrays can prove to be both difficult and cost prohibitive. Using a phase-only mask, we have fabricated an array of analog reflectors which can then be tiled using a photolithographic stepper. The elements are designed using a fixed period and varying fill factor to create the analog slope of each side wall. The overall depth of the array can be controlled by both the exposure and etching processes to ultimately create the desired effect. After etching, a single coating of metal finishes the process, and the elements can then be diced out and integrated into each specific application. The etched arrays may alternatively be used as a mold to create high volumes of the desired element. The design and fabrication parameters for trihedral corner cube arrays will be discussed in detail. The advantages and limitations will then be discussed.

Paper Details

Date Published: 22 January 2005
PDF: 8 pages
Proc. SPIE 5720, Micromachining Technology for Micro-Optics and Nano-Optics III, (22 January 2005); doi: 10.1117/12.591996
Show Author Affiliations
Heidi Hockel, College of Optics and Photonics, Univ. of Central Florida (United States)
Ricardo F. Martins, College of Optics and Photonics, Univ. of Central Florida (United States)
Jinwon Sung, College of Optics and Photonics, Univ. of Central Florida (United States)
Eric G. Johnson, College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 5720:
Micromachining Technology for Micro-Optics and Nano-Optics III
Eric G. Johnson; Gregory P. Nordin; Thomas J. Suleski, Editor(s)

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