Device and method to stabilize beam shape and symmetry for...

Coherent light generators – Particular beam control device

Reexamination Certificate

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C372S057000, C372S107000

Reexamination Certificate

active

07433372

ABSTRACT:
A beam mixer for increasing intensity symmetry along a selected axis of a beam (wherein the beam extends from a first edge to a second edge along the axis) is disclosed and may include a plurality of mirrors establishing a spatially inverting path. For the beam mixer, the inverting path may have a beginning and an end and may be characterized in that a part of the beam near the first beam edge at the beginning of the path translates to the second beam edge at the end of the path. For this aspect, the beam mixer may further include an optic dividing the beam into first and second beam portions, the optic placing the first portion onto the inverting path and recombining the first and second portions onto a common path after the first portion has traveled along the inverting path thereby mixing the beam.

REFERENCES:
patent: 7009140 (2006-03-01), Hofmann
patent: 2004/0136417 (2004-07-01), Webb et al.
patent: 2004/0182838 (2004-09-01), Das et al.
patent: 2005/0259709 (2005-11-01), Das et al.
U.S. Appl. No. 11/261,948, filed Oct. 28, 2005, Das et al.
U.S. Appl. No. 11/447,379, filed Jun. 5, 2006, Hofmann.
U.S. Appl. No. 60/811,242, filed Jun. 5, 2006, Reiley et al.

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