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Laserscanner mit rotatorisch angetriebenem Umlenkspiegel

Polygon type laser scanner used in material processing field, has deflecting mirror whose mirror surface is three-dimensionally shaped such that laser beam is periodically guided along single or multiple curved scanning paths
 
: Franz, Christoph

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Frontpage ()

DE 102012016788 A1: 20120823
Deutsch
Patent, Elektronische Publikation
Fraunhofer ILT ()

Abstract
The scanner has a rotary propelled deflecting mirror (7) through which an incident laser beam (4) is guided periodically along a scanning path (10) in a machining plane. The mirror surface (8) of the deflecting mirror is three-dimensionally shaped such that the laser beam is periodically guided along the single or multiple curved scanning paths. The deflecting mirror is disc or cylindrical-shaped. The mirror surface is a free-form surface. The mirror surface has the curvature which changes periodically in the direction of rotation.

: http://publica.fraunhofer.de/dokumente/N-311010.html