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Proceedings Paper

Add-on laser reading device for a camera phone
Author(s): Jukka-Tapani Mäkinen D.V.M.; Karri Niemelä; Hannu Vasama; Rauno Mattila; Mika Aikio; Sanna Aikio; Janne Aikio
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Paper Abstract

A novel add-on device to a mobile camera phone has been developed. The prototype system contains both laser and LED illumination as well as imaging optics. Main idea behind the device is to have a small printable diffractive ROM (Read Only Memory) element, which can be read by illuminating it with a laser-beam and recording the resulting datamatrix pattern with a camera phone. The element contains information in the same manner as a traditional bar-code, but due to the 2D-pattern and diffractive nature of the tag, a much larger amount of information can be packed on a smaller area. Optical and mechanical designs of the prototype device have been made in such a way that the system can be used in three different modes: as a laser reader, as a telescope and as a microscope.

Paper Details

Date Published: 14 October 2005
PDF: 11 pages
Proc. SPIE 5962, Optical Design and Engineering II, 596228 (14 October 2005); doi: 10.1117/12.625373
Show Author Affiliations
Jukka-Tapani Mäkinen D.V.M., VTT Electronics (Finland)
Karri Niemelä, VTT Electronics (Finland)
Hannu Vasama, VTT Electronics (Finland)
Rauno Mattila, VTT Electronics (Finland)
Mika Aikio, VTT Electronics (Finland)
Sanna Aikio, VTT Electronics (Finland)
Janne Aikio, VTT Electronics (Finland)

Published in SPIE Proceedings Vol. 5962:
Optical Design and Engineering II
Laurent Mazuray; Rolf Wartmann, Editor(s)

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