Optical cross-connect switch with telecentric lens and multi-surface optical element
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United States of America Patent
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Apr 11, 2006
Grant Date -
Jul 29, 2004
app pub date -
Jan 29, 2003
filing date -
Jan 29, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In the beam path of an Optical Cross Connect between the front face of a fiber block and a moveable mirror array are placed a telecentric lens and multi-surface optical element. The lens is placed adjacent the front face with a front focal plane coinciding with the front face. The substantially parallel beam path axes between the front face and the telecentric lens are converted by the lens into dispersing directions towards the optical element. Discrete optical surfaces of the optical element redirect the dispersing beam paths in a fashion such that the beam paths coincide in the following with corresponding moveable mirrors of a mirror array. Pitches of arrayed fiber ends and of the optical surfaces as well as the moveable mirrors are independently selectable. The telecentric lens simultaneously focuses the signal beams with improved beam separation and reduced signal loss.
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