US 7,321,127 B2
Optical reflector element, its method of fabrication, and an optical instrument implementing such elements
Marcos Bavdaz, Oegstgeest (Netherlands); and Marco Wilhelmus Beijersbergen, Sassenheim (Netherlands)
Assigned to European Space Agency, Paris Cedex (France)
Filed on Feb. 16, 2005, as Appl. No. 11/59,108.
Claims priority of application No. 04 50278 (FR), filed on Feb. 16, 2004.
Prior Publication US 2005/0185306 A1, Aug. 25, 2005
Int. Cl. G21K 1/06 (2006.01)
U.S. Cl. 250—505.1  [378/145] 24 Claims
OG exemplary drawing
 
1. An optical reflector element for a beam of X-rays, gamma rays, or high-energy particles at grazing incidence, the element comprising at least two superposed plates for forming a stack type structure, each of said at least two plates has a “top” first face that is reflective for said beam and a second face associated with a plurality of ribs forming spacers between two successive plates of said stack so as to define a determined spacing between two successive reflecting faces.