The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2017
Filed:
Dec. 11, 2014
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Pierre Bleuet, Seyssins, FR;
Christophe Constancias, Sarcenas, FR;
Abstract
In the field of resolution test charts for analysis of the resolution of X-ray tomography systems, a test chart comprises a substrate bearing X-ray absorbent zones, with widths and spacings to allow measurement of the system resolution. To avoid shadow effects when the X-ray illumination beam is divergent and when the absorbent zones have a large height/width ratio (from 2 to 5 for example), the absorbent zones in the diverse points of the pattern have a shape of which a general direction of elevation with respect to the surface of the substrate is rotated toward a point of convergence which is the same for all absorbent zones. The X-ray source is placed at the convergence point, eliminating shadow effects. The oblique elevation can be obtained by specific etching steps, or curvature of the substrate after fabrication of the absorbent patterns, or else by use of two superimposed partial test charts.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile