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, 2007
Filed:
Jun. 29, 2004
Applicant:
Werner J. Fiala, A-1180 Vienna, AT;
Inventor:
Werner J. Fiala, A-1180 Vienna, AT;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/04 (2006.01); A61F 2/14 (2006.01); A61F 2/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
Circular and annular lens zones are disclosed which, at a given lens area, exhibit a depth of focus of a lens of considerably smaller area. The large depth of focus is achieved by imparting the lens zones a refractive power profile. An assembly of such large depth of focus lens zones represents a lens of large diameter which lens, in polychromatic light, exhibits essentially the same depth of focus as the lens zones from which it is composed.