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:
Jun. 08, 2004
Filed:
Jul. 17, 2001
Applicant:
Inventor:
Robert B Mandell, Moraga, CA (US);
Assignee:
Soft Focal Company, Inc., Moraga, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C 7/04 ;
U.S. Cl.
CPC ...
G02C 7/04 ;
Abstract
A soft prism bifocal contact lenses that provides optimal vision for both distance and near objects by incorporating two or more prisms into the same lens. One or more primary prisms are used to achieve a desired vertical lens positioning on the eye and to control meridional rotation. In addition, one or more secondary prisms are used to achieve vertical lens shifting so that the desired optical power zone of the contact lens is brought before the entrance pupil of the eye at the desired time.