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:
Dec. 30, 2003
Filed:
Oct. 25, 2002
Andrea Welk, Munich, DE;
Peter Baumbach, Munich, DE;
Walter Haimerl, Munich, DE;
Herbert Pfeiffer, Muinch, DE;
Norbert Awrath, Munich, DE;
Gregor Esser, Munich, DE;
Helmut Altheimer, Lauchdorf, DE;
Rainer Dorsch, Munich, DE;
Martin Zimmermann, Klenberghofen, DE;
Jochen Brosig, Gruenwald, DE;
Werner Mueller, Oetisheim, DE;
Martin Wechs, Munich, DE;
Stephan Haser, Munich, DE;
Winfried Nikolaus, Haar, DE;
Optische Werke G. Rodenstock, Munich, DE;
Abstract
Described is a spectacle lens comprising a region (distance portion) designed for viewing at large distances and in particular “to infinity”, a region (near portion) designed for viewing at short distances and in particular “reading distances”, and a progressive zone disposed between the distance portion and the near portion, in which the power of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at the near reference point located in the near portion along a curve (principal line) veering towards the nose. The invention is distinct in that the astigmatic deviation, i.e. the difference between the prescribed and the actual astigmatism along circles having a center lying 4 mm below the centration point and having a diameter of 10 to 40 mm satisfies the following conditions: two local minima occur which on a “right-hand side spectacle lens” are located at 95°±10° (according to TABO) and at 280°±10°, and on a “left-hand side spectacle lens” at 85°±10° and 260°±10°; and two local maxima occur which on both a “right-hand side spectacle lens” and also a “left-hand-side spectacle lens” are located at 215°±10° and 335°±10°.