Patent ID: 6467915
Filing Date: 2002-10-22
Classification: B23K,G02B

Abstract:
A deformable mirror (11) for a laser beam material processing apparatus, comprising a translatory actuator (20) which is articulated clamped between a rear side of a mirror plate (13) and a mirror housing (12) supporting said mirror plate (13), said actuator (20) contracting the rear side of said mirror plate coaxially offset from a center axis (21) extending through said mirror housing (12) and mirror plate (13) so as to spherically curve an opposite front mirror surface (17) in dependence of an electrical actuation of said actuator (20), said actuator contracting the rear side of said mirror plate (13) through a planar base portion (23) and a spherical cap portion (22) which is supported thereon, wherein the rear side of said mirror plate (13) is supported by a holder (16) along the peripheral edge (18) of said mirror at an end (14) of said mirror housing (12) such that the mirror plate (13) is axially stiff but yieldable in a radial direction.