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:
Jul. 29, 2025
Filed:
May. 28, 2021
Applicant:
Sifi S.p.a., Aci Sant'Antonio, IT;
Inventors:
Maria Cristina Curatolo, Viagrande, IT;
Renato Frison, Chions, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/04 (2006.01); A61F 2/16 (2006.01); G02C 7/02 (2006.01);
U.S. Cl.
CPC ...
G02C 7/044 (2013.01); A61F 2/1618 (2013.01); G02C 7/028 (2013.01);
Abstract
An implantable or wearable lens for ophthalmic use, having a front surface and a rear surface, wherein at least one surface of said front surface and rear surface has an aspherical refractive profile with circular or rotational symmetry, or with cylindrical or non-rotational symmetry, with respect to the optical axis, and having a geometric elevation z(r) defined by a series expansion of Forbes polynomials, wherein said refractive profile generates an enhancement of the wavefront W(r) emerging from the lens such as to extend the depth of field thereof progressively and continuously in a power range between −1.0 D and 4.0 D.