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:
Oct. 30, 2012
Filed:
Apr. 29, 2011
Atul Pradhan, Pittsford, NY (US);
Jay Anzellotti, Rochester, NY (US);
Joseph T. Foss, Rochester, NY (US);
Ligang Wang, Rochester, NY (US);
Turan Erdogan, Spencerport, NY (US);
Atul Pradhan, Pittsford, NY (US);
Jay Anzellotti, Rochester, NY (US);
Joseph T. Foss, Rochester, NY (US);
Ligang Wang, Rochester, NY (US);
Turan Erdogan, Spencerport, NY (US);
Semrock, Inc., Rochester, NY (US);
Abstract
In accordance with the invention, a filter is fabricated to take into account the effect of absorption by filter material. The method is exemplified by the fabricating of an ultraviolet light transmission filter for transmitting a band within the range 230-320 nanometers. The resulting filter comprises plurality of hard-coating, thin-film layers of alternating high and low index of refraction. The improved filter provides high transmission, sharp edge slopes, and deep and extended out-of-band blocking. As compared with currently available filters, the filter provides transmission up to three or more times greater, edge slopes up to four times sharper, and deep extended out-of-band blocking extending further, even through the visible range.