Progressive multi-focal ophthalmic lens - Essilor Internacional (Company General Doptic)

Title:

Progressive multi-focal ophthalmic lens

Document Type and Number:

Japanese Patent JP6069296

Kind Code:

B2

Abstract:

The invention relates to a progressive ophthalmic lens comprising a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value (and a cylinder value, the front surface of the lens comprising: - a far vision zone having a far vision reference point ; - a near vision zone having a near vision reference point ; - a main meridian, wherein the front surface is regressive and has: - a sphere gradient normalized value of less than 7.50.10 -1 mm -1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); - a cylinder gradient normalized value of less than 1.45 mm -1 at any point in the central portion of the lens

Inventors:

De Rossi, Helene
Moine, Jerome
Lego carlos
Guillo, Mathieu

Application Number:

JP2014501550A

Publication Date:

February 01, 2017

Filing Date:

March 22, 2012

Export Citation:

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