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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 20 — Oct. 6, 2003
  • pp: 2459–2473

High performing micromachined retroreflector

Axel Lundvall, Fredrik Nikolajeff, and Tomas Lindström  »View Author Affiliations

Optics Express, Vol. 11, Issue 20, pp. 2459-2473 (2003)

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This paper reports on the realization of a type of micromachined retroreflecting sheeting material. The geometry presented has high reflection efficiency even at large incident angles, and it can be manufactured through polymer replication techniques. The paper consists of two parts: A theoretical section outlining the design parameters and their impact on the optical performance, and secondly, an experimental part comprising both manufacturing and optical evaluation for a candidate retroreflecting sheet material in traffic control devices. Experimental data show that the retroreflecting properties are promising. The retroreflector consists of a front layer of densely packed spherical microlenses, a back surface of densely packed spherical micromirrors, and a transparent spacer layer. The thickness of the spacer layer determines in part the optical characteristics of the retroreflector.

© 2003 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(220.3630) Optical design and fabrication : Lenses
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.3990) Optical devices : Micro-optical devices
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Research Papers

Original Manuscript: August 12, 2003
Revised Manuscript: September 8, 2003
Published: October 6, 2003

Axel Lundvall, Fredrik Nikolajeff, and Tomas Lindstrom, "High performing micromachined retroreflector," Opt. Express 11, 2459-2473 (2003)

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