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:
Jun. 28, 2011
Filed:
Oct. 24, 2007
Okan K. Ersoy, West Lafayette, IN (US);
Xianfan Xu, West Lafayette, IN (US);
Pornsak Srisungsitthisunti, West Lafayette, IN (US);
Okan K. Ersoy, West Lafayette, IN (US);
Xianfan Xu, West Lafayette, IN (US);
Pornsak Srisungsitthisunti, West Lafayette, IN (US);
Purdue Research Foundation, West Lafayette, IN (US);
Abstract
A volume Fresnel zone plate and a method of producing such a device using a femtosecond laser for direct writing of zone plates. A volume zone plate has a number of Fresnel zone plate layers designed to focus light coherently to a single spot. Embodiments include both low numerical aperture (NA) and high NA zone plates, and provide a significant increase in overall diffraction efficiency over a single Fresnel zone plate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile