Nokia Corporation

Teemu Alajoki

Jakke Mäkelä

Kari Kataja

Janne Aikio

Sanna Aikio

A method and miniaturizable device is described to read/write information to an optical storage medium (). A device comprises one or more light sources () bounded up with an access unit () which is arranged to be controllable to a position, in which light beams () are transmitted transversal towards an optical storage medium, and reflected light beams () are analysed by a detector element () which further informs the access unit whether to move or stand still to keep light beams in focus and on track. A device according to the invention is possible to implement in a small size and low weight due to reduced component count and thin access unit geometries. A communication device () according to the invention may be implemented to fulfil a crucial need for ultraminiature range of communication devices.

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Oulu, Finland

Teemu Alajoki