Add-on laser reading device for a camera phone

Jukka-Tapani Mäkinen D.V.M.; Karri Niemelä; Hannu Vasama; Rauno Mattila; Mika Aikio; Sanna Aikio; Janne Aikio

doi:10.1117/12.625373

14 October 2005 Add-on laser reading device for a camera phone

Jukka-Tapani Mäkinen D.V.M., Karri Niemelä, Hannu Vasama, Rauno Mattila, Mika Aikio, Sanna Aikio, Janne Aikio

Proceedings Volume 5962, Optical Design and Engineering II; 596228 (2005) https://doi.org/10.1117/12.625373
Event: Optical Systems Design 2005, 2005, Jena, Germany

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.

Citation Download Citation

Jukka-Tapani Mäkinen D.V.M., Karri Niemelä, Hannu Vasama, Rauno Mattila, Mika Aikio, Sanna Aikio, and Janne Aikio "Add-on laser reading device for a camera phone", Proc. SPIE 5962, Optical Design and Engineering II, 596228 (14 October 2005); https://doi.org/10.1117/12.625373

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