WO2018078506A2

WO2018078506A2 - Differentiated geometry lens

Info

Publication number: WO2018078506A2
Application number: PCT/IB2017/056565
Authority: WO
Inventors: Giorgio Renzi
Original assignee: Giorgio Renzi
Priority date: 2016-10-26
Filing date: 2017-10-23
Publication date: 2018-05-03
Also published as: WO2018078506A3

Abstract

A lens (L) defined by the combination of at least one dioptric lens (L1) and at least one prismatic lens (L2), said dioptric lens (L1 ) being provided with a determined dioptric power and said prismatic lens (L2) being shaped so as to present at least one first area (A) with prismatic power equal to or greater than 0Δ and lower than the prismatic power of a second area (B) adjacent to said first area (A), at least one second area (B) with prismatic power between the prismatic power of said first area (A) and that of a third area (C) adjacent to said second area (B), and at least one third area (C) having a prismatic power equal to or greater than 0.25Δ.

Description

DIFFERENTIATED GEOMETRY LENS.

DESCRIPTION

The present invention relates to a differentiated geometry lens.

In particular, the present invention is advantageously used in the optical field both as a contact lens and as an ophthalmic lens mounted in eyeglasses or in ski or diving masks, swimming goggles, helmet visors, protective goggles, eyeglasses with electronic/digital components, e.g. Google Glasses, magnifying eyeglasses and the like, in order to obtain a corrective postural effect for learning disorders, neurological damage, gait difficulties and dizziness or similar disorders, the following description will make explicit reference to without losing its generality.

As is known in the optical field, ophthalmic lenses having dioptric and prismatic power have a significant effect on the posture of the wearer and user of such lenses.

The physical consequence is that the higher the dioptric/prismatic power of the lens, the higher the interference, with adverse effects on posture due to the increased muscular tension induced by the visual system.

The removal from the optic centre of the lens induces a prismatic effect that, with the increase of the dioptric power and of the distance from the centre of the lens, increases perceptual distortions with negative consequences on posture.

At present, single dioptric lenses having effects on the sharpness of vision,

l which act on a specific cranial nerve (the 2nd cranial nerve), and single prismatic lenses with effects on the wearer's muscular tension and balance, acting on a plurality of cranial nerves (from the 3rd to the 12th), are known. The object of the present invention is to provide a differentiated geometry lens capable of handling prismatic progression, while maintaining a dioptric correction of the refractive error (myopia, hypermetropia, astigmatism, presbyopia), having a postural effect.

Another object of the present invention is to provide eyeglasses which support a pair of lenses according to the present invention.

A further object of the present invention is to provide a contact lens according to the dictates of the present invention.

A further object of the present invention is to provide an optical means (visor, protective lenses, sports glasses) according to the principles of the present invention.

The structural and functional features of the present invention and its advantages over the known art will be clearer and more evident from the claims below and, in particular, from an examination of the following description, made with reference to the accompanying figures, wherein:

Figure 1 shows schematically the concept behind this differentiated geometry lens, also including a variant; and

Figures 2 and 3 show in detail the concept of the lens of Figure 1. With reference to the accompanying figures, L generally indicates a lens suitable for use as both a contact lens or as an ophthalmic lens mounted on eyeglasses, in order to obtain a corrective effect related to posture, learning disorders, neurological damage, gait difficulties and dizziness, or in the sports, music or other fields.

The lens L has a conformation defined by a sum or combination of two lenses L1 and L2, where the lens L1 has a predetermined dioptric power of less than or equal to zero at intervals of 1/16 of a dioptre, and the lens L2 contains prismatic parts divided into the following three defined areas:

area A, having a prismatic power equal to or greater than 0Δ and less than the prismatic power present on the adjacent area B;

area B, having a prismatic power between the prismatic power of area A and that of area C adjacent to the same area B;

- area C, having a power greater than or equal to 0.25Δ.

The lens L has therefore a differentiated geometry, and proposes to handle prismatic variation by dividing it into the three mentioned areas A, B, and C of a progressive value with a variable axis depending on the band.

In detail, as best illustrated in Figures 2 and 3, the present differentiated geometry lens L has, in its lower part, a thickness s1 and, in its upper part, a thickness s2 with thicknesses s1 > s2 which vary according to the dioptric and prismatic power.

The lens L extends longitudinally with a determined total diameter dtot, has a substantially convex external surface S2, is divided into the three mentioned bands A, B and C with respective concave surfaces S1A, S1 B and S1 C, and with respective prismatic powers such as those mentioned above.

Always as shown in Figure 3, band A of lens L has a central component h3 of height and two peripheral components h'3 and h"3, band B has a central component h2 of height and two peripheral components h'2 and h"2, and band C has a central component hi of height and two peripheral components h'1 and h"1.

In use, since each visual dysfunction has specific technical characteristics, an analysis protocol for the calibration of the lens L and subsequent lenses is provided.

It should also be pointed out that the efficacy of the lens L described above results in efficient and optimal results, from the traditional 6-12 months of visual training to 1-3 months, with positive effects even after the first few minutes of using the same lens L.

From a constructional point of view, preferably but without limitation thereto, the lens L can be realized by using one of the following constructive methods:

- casting by injection of a raw material (such as CR39 in its monomeric state) into 2 moulds (polymerisation);

- chip removal by milling and turning of a semifinite through a numerical control generator with free-form technology, obtaining a spherical or toric curvature of the back surface;

- 3D printing.

Claims

Lens (L) characterized in that it is defined by the combination of at least one dioptric lens (L1 ) and of at least one prismatic lens (L2), said dioptric lens (L1) being provided with determined dioptric power and said prismatic lens (L2) being shaped so as to present at least a first zone (a) with prismatic power equal to or greater than 0Δ and lower than the prismatic power of a second area (B) adjacent to said first area (a), at least a second zone (B) with prismatic power between the prismatic power of said first zone (a) and that of a third zone (C) adjacent to said second area (B), and at least a third zone (C) with prismatic power higher than or equal to 0, 25Δ.

Lens according to claim 1 , characterized in that said first zone (A) has a dioptric power lower than, equal to or greater than zero with intervals of 1/16 of diopter.

Lens according to claim 1 or 2, characterized in that it comprises a substantially convex outer surface (S2), and a concave inner surface divided into said first, second and third zone (A, B, C) and with respective concave surfaces ( S1A, S1 B, S1 C).

Eyewear comprising a twin pair of lenses (L) according to one or more of the preceding claims 1 to 3.

Contact lens defined by a lens (L) according to one or more of the preceding claims 1 to 3.

Use of the lens (L) according to one or more of the preceding claims 1 to 3 or 5, for corrective postural effect, for learning disorders, neurological damage, difficulty on walking and dizziness, sports or music, or other similar.

7. Use of eyewear according to claim 4, for corrective postural effect, for learning disorders, neurological damage, difficulty on walking and dizziness, sports or music, or other similar.