Focusing system comprising acousto-optic deflectors for focusing an electromagnetic beam
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United States of America Patent
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Oct 15, 2013
Grant Date -
Feb 23, 2012
app pub date -
Dec 30, 2009
filing date -
Dec 31, 2008
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Abstract
A focusing system for focusing an electromagnetic beam for three-dimensional random access applications comprises a first pair of acousto-optic deflectors for focusing an electromagnetic beam in an X-Z plane, and a second pair of acousto-optic deflectors for focusing an electromagnetic beam in a Y-Z plane substantially perpendicular to the X-Z plane. The second pair of acousto-optic deflectors is arranged between the acousto-optic deflectors of the first pair of acousto-optic deflectors such that the first and fourth acousto-optic deflectors of the system belong to the first pair of acousto-optic deflectors and the second and third acousto-optic deflectors of the system belong to the second pair of acousto-optic deflectors.
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