US 7,321,468 B2
Method and optical arrangement for beam guiding of a light beam with beam delay
Alois Herkommer, Aalen (Germany); Holger Muenz, Aalen (Germany); and Wolfgang Seifert, Aalen (Germany)
Assigned to Carl Zeiss Laser Optics GmbH, (Germany)
Filed on Dec. 15, 2004, as Appl. No. 11/13,188.
Claims priority of provisional application 60/529604, filed on Dec. 15, 2003.
Prior Publication US 2005/0128483 A1, Jun. 16, 2005
Int. Cl. G02B 27/10 (2006.01); G02B 27/12 (2006.01); G02B 5/08 (2006.01); H01S 3/081 (2006.01); H01S 3/08 (2006.01)
U.S. Cl. 359—618  [359/639; 359/861; 372/93; 372/98; 372/100; 372/101] 37 Claims
OG exemplary drawing
 
6. An optical arrangement for beam guiding of a light beam generated by a light source to a target location along a path distance LS, comprising
at least one delay line having an input at which said light beam coming from said light source is split into a first partial beam which additionally passes through said delay line at least once, thereby covering a path distance LD, and into a second partial beam that does not pass through said path distance LD, and an output at which said delayed first and said non-delayed second partial beam are combined so that the combined light beam passes to said target location,
a beam guiding optic being present in said beam path and being designed in such a way that said light beam generated by said light source has a predetermined beam width B at said target location, said beam guiding optic having at least one expansion optic, which expands said light beam to a beam width B′>B, and said beam guiding optic having at least one compression optic, with the result that said light beam has said predetermined beam width B at said target location.