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:
May. 04, 2021
Filed:
Aug. 15, 2019
Applicant:
Novartis Ag, Basel, CH;
Inventors:
Assignee:
Alcon Inc., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/04 (2006.01); G02C 7/02 (2006.01); G02C 7/06 (2006.01); A61F 2/16 (2006.01); G02B 27/58 (2006.01);
U.S. Cl.
CPC ...
A61F 2/1618 (2013.01); A61F 2/1654 (2013.01); G02B 27/58 (2013.01); G02C 7/024 (2013.01); G02C 7/041 (2013.01); G02C 7/042 (2013.01); G02C 7/06 (2013.01); A61F 2/1656 (2013.01); G02C 2202/20 (2013.01); G02C 2202/22 (2013.01);
Abstract
A method and system provide a multifocal ophthalmic device. The ophthalmic lens has an anterior surface, a posterior surface and at least one diffractive structure including a plurality of echelettes. The echelettes have at least one step height of at least one wavelength and not more than two wavelengths in optical path length. The diffractive structure(s) reside on at least one of the anterior surface and the posterior surface. The diffractive structure(s) provide a plurality of focal lengths for the ophthalmic lens.