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. 04, 2007
Filed:
Nov. 24, 2004
Heather D Boek, Corning, NY (US);
Christine E Heckle, Horseheads, NY (US);
Johannes Moll, Corning, NY (US);
Charlene M Smith, Corning, NY (US);
Heather D Boek, Corning, NY (US);
Christine E Heckle, Horseheads, NY (US);
Johannes Moll, Corning, NY (US);
Charlene M Smith, Corning, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
Disclosed is a synthetic silica glass optical material having high resistance to optical damage by ultraviolet radiation in the ultraviolet wavelength range, particularly in the wavelength region of less than about 250 nm and particularly, exhibiting a low laser induced density change. The synthetic silica glass optical material of the present invention contains at least about 0.1 ppm of aluminum and Hconcentration levels greater than about 0.5×10molecules/cm. Additionally, the synthetic silica optical material of the present invention exhibits an Hto Al ratio of greater than about 1.2, as measured in ×10/cmmolecules Hper ppm Al.