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:
Aug. 20, 2019
Filed:
Dec. 12, 2016
Applicant:
Nikon-essilor Co., Ltd., Tokyo, JP;
Inventor:
Yukio Honma, Tokyo, JP;
Assignee:
NIKON-ESSILOR CO., LTD., , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02C 7/02 (2006.01); G02C 7/06 (2006.01);
U.S. Cl.
CPC ...
G02C 7/028 (2013.01); G02C 7/027 (2013.01); G02C 7/06 (2013.01); G02C 7/068 (2013.01);
Abstract
A lens design method includes: changing curve data including a curve value of a distance vision part and a curve value of a near vision part of a progressive power lens on an object side and a curve value of a distance vision part and a curve value of a near vision part of the progressive power lens on an eyeball side so as to be suited to prescription values to calculate a plurality of sets of the curve data; and calculating, for each of the calculated sets of the curve data, a thickness at a second position on the progressive power lens that satisfies thickness conditions for a first position on the progressive power lens.