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. 02, 2015
Filed:
Mar. 08, 2012
Marius Peloux, Charenton le Pont, FR;
Pierre Chavel, Orsay, FR;
Marius Peloux, Charenton le Pont, FR;
Pierre Chavel, Orsay, FR;
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton le Pont, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, Paris, FR;
Abstract
A transparent optical element (), includes a plurality of stacked layers (), each of which consist of cells in which optical phase-shift values are provided. The layers are arranged such that boundaries between certain contiguous cells of one of the layers cut into cells of another layer. In this way, a useful apparent cell size can be reduced so as to reproduce a target optical phase-shift distribution with greater precision. Additionally, the maximum amplitude of optical phase shift variations that are produced by the element increases with the number of stacked layers. The chromatism of the diopter function of the element can also be reduced.