Patent ID: 7180081
Filing Date: 2007-02-20
Classification: B82Y,G03F,G21K,H01S,H05G,H05H

Abstract:
1. An EUV source debris shield comprising: a first debris shield member comprising: a second curvilinear surface having the first selected shape with respect to the first axis of rotation and spaced intermediate the first curvilinear surface and the first axis of rotation; and, a plurality of aligned tubular openings in the debris shield member connecting the first curvilinear surface and the second curvilinear surface, and having an internal opening tapered toward a focal point on the first axis of rotation; and a second debris shield member comprising: a fourth curvilinear surface having the first selected shape with respect to the first axis of rotation and spaced intermediate the third curvilinear surface und the first axis of rotation; and, a plurality of aligned tubular openings in the debris shield member connecting the third curvilinear surface and the fourth curvilinear surface, and having an internal opening tapered toward a focal point on the first axis of rotation.