OPHTHALMIC LENS WITH PROGRESSIVE ADDITION OF POWER AND PRISM

Title:

OPHTHALMIC LENS WITH PROGRESSIVE ADDITION OF POWER AND PRISM

Document Type and Number:

WIPO Patent Application WO2004070426

Kind Code:

A3

Abstract:

The invention relates to a lens with a horizontal prismatic refractive power which varies progressively along the principal meridian of progression (MM') with an addition of horizontal prismatic power greater than 2 prismatic dioptres in absolute terms. This addition of horizontal prismatic power is defined by the difference in power of horizontal prismatic refraction at a reference point (L) in the distant field of vision and the power of horizontal prismatic refraction at the point (P') of projection of the point of reference (P) in the near field of vision (VP) onto the vertical passing through the point of reference (L) of the distant field of vision.

Inventors:

POULAIN ISABELLE (FR)
DROBE BJOERN (FR)
HARO CLOTILDE (FR)
ALLIONE PASCAL (FR)
AHSBAHS FRANCOISE (FR)

Application Number:

PCT/FR2004/000210

Publication Date:

October 21, 2004

Filing Date:

January 30, 2004

Export Citation:

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Assignee:

ESSILOR INT (FR)
POULAIN ISABELLE (FR)
DROBE BJOERN (FR)
HARO CLOTILDE (FR)
ALLIONE PASCAL (FR)
AHSBAHS FRANCOISE (FR)

International Classes:

G02C7/02; G02C7/06; (IPC1-7): G02C7/02; G02C7/06

Foreign References:

US6364481B1	2002-04-02
US6505934B1	2003-01-14
US2118132A	1938-05-24
US5270745A	1993-12-14
US2442849A	1948-06-08

Other References: