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:
May. 27, 2014
Filed:
Nov. 05, 2013
Exelis, Inc., Arlington, VA (US);
Steven M. De Smitt, Fairport, NY (US);
David N. Strafford, Leesburg, VA (US);
Exelis, Inc., McLean, VA (US);
Abstract
An improved method for forming inexpensive, lightweight, closed-back, silicon carbide mirrors, via chemical vapor deposition (CVD) or chemical vapor composites (CVC), is achieved by using a two dimensional corrugated core with sloped walls. All layers in this design are chemical vapor deposited optical grade silicon carbide. Seamless cohesion between layers is achieved by depositing the material on the sloped walls of, and through holes in, the mandrel. The resulting structure is cohered and monolithic. The mandrels are matched in coefficient of thermal expansion (CTE) to the deposited material. Mandrels that support the layers are later removed by a separate process.