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:
Mar. 24, 2015
Filed:
Jul. 18, 2012
James R Cole, Norwood, NY (US);
Keith J Donohue, Fairport, NY (US);
Michael Lucien Genier, Horseheads, NY (US);
Robert Stephen Pavlik, Jr., Corning, NY (US);
Michael William Price, Corning, NY (US);
William Rogers Rosch, Corning, NY (US);
Jeffrey L Sunderland, Colton, NY (US);
James R Cole, Norwood, NY (US);
Keith J Donohue, Fairport, NY (US);
Michael Lucien Genier, Horseheads, NY (US);
Robert Stephen Pavlik, Jr., Corning, NY (US);
Michael William Price, Corning, NY (US);
William Rogers Rosch, Corning, NY (US);
Jeffrey L Sunderland, Colton, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
The invention is directed to calcium fluoride crystal optics with improved laser durability that can be used for the transmission of below 250 nanometer (nm) electromagnetic radiation. The optics consists of CaFas the major component and Mg in an amount in the range of 13 ppm to 20 ppm while Ce and Mn are <0.5 ppm. The doped crystal and optics made therefrom have a ratio of 515/380 nm transmission loss of less than 0.3 after exposure to greater than 2.8 MRads of γ-radiation. Further, the doped crystal and optics made therefrom exhibit a greatly improved lifetime as shown by ALDT testing to at least 1 billion pulses.