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. 07, 1998
Filed:
Aug. 22, 1995
Hitoshi Miura, Okazaki, JP;
Abstract
An ophthalmic lens includes a refractive surface partitioned into a first area, a second area located above the first area and a third area located below the first area. The first area includes a reading point providing a first refractive focal power on a meridional line. The second area provides a surface refractive focal power less than that of the reading point, and the third area provides a surface refractive focal power stronger than that of the reading point. The refractive focal power in the first area progressively changes between the second and third areas. The first area includes a quasi-clear vision area that has a maximum horizontal width in the proximity of the geometrical center of the lens and a clear vision area.