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:
Dec. 29, 2015
Filed:
Oct. 28, 2012
Carl Zeiss Meditec Ag, Jena, DE;
Werner Fiala, Vienna, AT;
Mario Gerlach, Hohen Neuendorf, DE;
Carl Zeiss Meditec AG, Jena, DE;
Abstract
A multifocal lens has a number n>2 of principal powers, of which at least one principal power is refractive and at least one principal power is diffractive. The multifocal lens includes a first lens portion having at least one first annular zone and at least a second lens portion having at least one second annular zone, wherein the zones each have at least one main sub-zone and at least one phase sub-zone. For forming the n principal powers, a maximum of n−1 lens portions are combined, and an averaged refractive power of a zone of the first lens portion is equal to an averaged refractive power of a zone of the second lens portion.