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. 03, 1986
Filed:
Feb. 20, 1985
Applicant:
Inventor:
Sakiho Okazaki, Suwa, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02C / ;
U.S. Cl.
CPC ...
351169 ;
Abstract
An ophthalmic lens having a far vision viewing zone in the upper region of the lens, a near vision viewing zone in the lower region of the lens, an intermediate vision viewing zone in the region intermediate the far vision zone and the near vision zone and a principal meridian vertically disposed in the center of the lens is provided. The far vision viewing zone is divided horizontally into three regions wherein astigmatism is at least in the central region and increases in the regions on both sides of the center region. The central region is formed so that the principal meridian substantially bisects the central region of the far vision viewing zone.