Abstract: A method for optimising a progressive ophthalmic lens and to a method for producing same. Further disclosed it a method for optimising a progressive ophthalmic lens the distribution of power and undesired astigmatism along an optical surface is optimised by minimising the function: F ? ? ·=· ? ? ? i = 1 n ? ? w ? ? 1 i ? ( Ast i ) 2 + w ? ? 2 i ? ( Pow i - TargetPow ) 2 wherein w1i and w2i are 0 or positive, and wherein the subscript i indicates the different points of the optical surface.
Type:
Grant
Filed:
April 20, 2018
Date of Patent:
March 29, 2022
Assignee:
HORIZONS OPTICAL S.L.U.
Inventors:
Gloria Casanellas Penalver, Pau Artus Colomer, Antoni Vilajoana Mas
Abstract: A progressive ophthalmic lens includes at least one multifocal surface, in which at each point of its surface, an astigmatism value and a gradient of astigmatism value can be measured, the lens including: a far-vision zone with a reference point (FV), a near-vision zone with a reference point (NV), an intermediate vision zone with a progression path that connects the far vision zone and the near vision zone, a foveal projection, and a para-foveal projection, and said lens defining a lens addition. When the lens addition is different than 2.00 D, the astigmatism value is k*Add*0.41 D, where Add indicates the lens addition and k is 0.5 and, if the progression path is shorter than 15 mm, the maximum astigmatism value of the foveal projection is (?0.03*d) D/mm+0.86 D, and when the lens progression path is larger than 15 mm, the maximum astigmatism value of the foveal projection is (?0.02*d) D/mm+0.71 D.
Type:
Grant
Filed:
August 2, 2019
Date of Patent:
October 26, 2021
Assignee:
HORIZONS OPTICAL, S.L.U.
Inventors:
Pau Artus Colomer, Gloria Casanellas Peñalver, Rafael Perpiñan Blasco
Abstract: A method for optimising a progressive ophthalmic lens and to a method for producing same. Further disclosed it a method for optimising a progressive ophthalmic lens the distribution of power and undesired astigmatism along an optical surface is optimised by minimising the function: F ? ? ·=· ? ? ? i = 1 n ? ? w ? ? 1 i ? ( Ast i ) 2 + w ? ? 2 i ? ( Pow i - TargetPow ) 2 wherein w1i and w2i are 0 or positive, and wherein the subscript i indicates the different points of the optical surface.
Type:
Application
Filed:
April 20, 2018
Publication date:
December 3, 2020
Applicant:
HORIZONS OPTICAL S.L.U.
Inventors:
Gloria CASANELLAS PENALVER, Pau ARTUS COLOMER, Antoni VILAJOANA MAS
Abstract: A method for manufacturing an ophthalmic lens including selecting a base of polymeric material and applying a multiple layer structure coating. The coating is selected by designating an interphase, a first layer (of 91-169 nm) with a refraction index higher than 1.8, a second layer (of 128-248 nm) with a refraction index lower than 1.65, a third layer (of 73-159 nm) with a refraction index higher than 1.8 and a fourth layer (of 40-138 nm) with a refraction index lower than 1.8. A total thickness of the multiple layer structure is less than 600 nm. The structure has intermediate layer(s) with intermediate refraction indices, wherein a doublet of two adjacent layers that fulfil the thicknesses above is replaced by a triplet so that the thickness and an optical thickness of the triplet differ from those of the doublet by less than 5%, respectively.
Type:
Application
Filed:
March 8, 2018
Publication date:
July 12, 2018
Applicant:
HORIZONS OPTICAL S.L.U.
Inventors:
Franco RIGATO, Glòria CASANELLAS PEÑALVER, Pau ARTÚS COLOMER, Antoni VILAJOANA MAS, Juan Carlos DÜRSTELER LÓPEZ
Abstract: Ophthalmic lens including a base of polymeric material with a coating having an interferential, anti-reflective, anti-iridescent and infrared filter multiple layer structure. An interphase, a first layer (of 91-169 nm) with a refraction index higher than 1.8, a second layer (of 128-248 nm) with a refraction index lower than 1.65, a third layer (of 73-159 nm) with a refraction index higher than 1.8 and a fourth layer (of 40-138 nm) with a refraction index lower than 1.8. A total thickness of the multiple layer structure is less than 600 nm. The structure can have intermediate layers with intermediate refraction indices, in which case a doublet of two adjacent layers that fulfill the thicknesses above is replaced by a triplet so that the thickness and an optical thickness of the triplet differ from those of the doublet by less than 5%, respectively.
Type:
Grant
Filed:
November 25, 2014
Date of Patent:
April 17, 2018
Assignee:
HORIZONS OPTICAL S.L.U.
Inventors:
Franco Rigato, Glòria Casanellas Peñalver, Pau Artús Colomer, Antoni Vilajoana Mas, Juan Carlos Dürsteler López