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. 11, 2008
Filed:
May. 18, 2007
Alan D. Kathman, Charlotte, NC (US);
Charles S. Koehler, Charlotte, NC (US);
William H. Welch, Charlotte, NC (US);
Eric G. Johnson, Winter Park, FL (US);
Robert D. Tekolste, Charlotte, NC (US);
Alan D. Kathman, Charlotte, NC (US);
Charles S. Koehler, Charlotte, NC (US);
William H. Welch, Charlotte, NC (US);
Eric G. Johnson, Winter Park, FL (US);
Robert D. Tekolste, Charlotte, NC (US);
Tessera North America, Inc., Charlotte, NC (US);
Abstract
An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.