@inproceedings{6e6728ef3309418daee79f3c2f668fbe,
title = "Add-on laser reading device for a camera phone",
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.",
author = "Jukka-Tapani M{\"a}kinen and Karri Niemel{\"a} and Hannu Vasama and Rauno Mattila and Mika Aikio and Sanna Aikio and Janne Aikio",
year = "2005",
doi = "10.1117/12.625373",
language = "English",
series = "Proceedings of SPIE",
publisher = "International Society for Optics and Photonics SPIE",
pages = "685--695",
booktitle = "Proceedings Volume 5962, Optical Design and Engineering II",
address = "United States",
note = "Optical Systems Design 2005 ; Conference date: 12-09-2005 Through 16-09-2005",
}