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:
May. 01, 2007
Filed:
May. 13, 2005
Gregor Esser, Munich, DE;
Walter Haimerl, Munich, DE;
Edda Wehner, Emmering, DE;
Andrea Welk, Munich, DE;
Helmut Altheimer, Baisweil-Lauchdorf, DE;
Martin Zimmerman, Erdweg-Kleinberghofen, DE;
Gregor Esser, Munich, DE;
Walter Haimerl, Munich, DE;
Edda Wehner, Emmering, DE;
Andrea Welk, Munich, DE;
Helmut Altheimer, Baisweil-Lauchdorf, DE;
Martin Zimmerman, Erdweg-Kleinberghofen, DE;
Rodenstock GmbH, Munich, DE;
Abstract
A double-progressive spectacle lens in which the progressive action is distributed over the front and rear surfaces of the double-progressive spectacle lenses and described by the quotient Q=Add/Addwhere Addrepresents the increase in the surface dioptric power along the principal line on the front surface between the distance area and the near area, and ADDrepresents the increase in the total dioptric power along the principal line between the distance area and the near area, and the fraction Q increases with growing distance area effect F: