Essilor International

The present invention relates to a method for manufacturing an ophthalmic article comprising a lens substrate and an ophthalmic wafer wherein the ophthalmic wafer has a blunt edge between a first surface thereof and its lateral surface; wherein the method comprises: providing (S100) the ophthalmic wafer; forming a mold cavity (S200); filling (S300) the mold cavity with a polymerizable composition; and curing (S400) the polymerizable composition to harden it, thus forming the lens substrate thereby obtaining the ophthalmic article. The present invention also relates to ophthalmic article (1) comprising: a lens substrate (12) and an ophthalmic wafer (11) with a first surface (111) in contact with the lens substrate (12), a second surface (112) opposite the first surface (111) and a lateral surface (113) joining the first surface (111) and the second surface (112), the ophthalmic wafer (11) having a blunt edge (113) between the first surface (111) and the lateral surface (112).

This head mountable device (10) comprises an ophthalmic lens having a front wafer (120) and a back wafer (122), an optical system (14) comprising a projector including a light source, a light-guide optical element (16) arranged between the front and back wafers (120, 122) and illuminated by the optical system (14). The optical system (14) is attached to the light-guide optical element (16). The light-guide optical element (16) is bonded to the ophthalmic lens by means of a first adhesive material. The head mountable device (10) comprises, in addition to an ophthalmic portion intended for vision by a user, a non-ophthalmic portion (18) not intended for vision covering the light-guide optical element (16) and extending between the external edge of the back wafer (122) and the external edge of the light-guide optical element (16), the non-ophthalmic portion (18) comprising a hole (20) adapted to accommodate the projector.

This head mountable device (10) comprises an ophthalmic lens (120, 122) having a front wafer (120) and a back wafer (122), an optical system (14) comprising a projector including a light source, a light-guide optical element (16) illuminated by the optical system (14). The optical system (14) is attached to the light-guide optical element (16). The light-guide optical element (16) is bonded to the ophthalmic lens (120, 122) by means of a first adhesive material. The head mountable device (10) comprises, in addition to an ophthalmic portion intended for vision by a user, a first non-ophthalmic portion (18) covering the light-guide optical element (16) and extending between the external edge of the back wafer (122) and the external edge of the light-guide optical element (16), except in the area occupied by the optical system (14), the first non-ophthalmic portion (18) being coated with the first adhesive material.

The present invention provides a composition suitable for use in switchable mirror devices, said composition comprising, dissolved in a solvent, a reducing compound E, a metal cation Mⁿ⁺, and an organic ligand L able to form a coordination complex with Mⁿ⁺, wherein E does not spontaneously reduce oxidized metal present in the composition, and wherein L comprises the following moiety I:Wherein X and X' are independently selected from O, and

The present invention provides a switchable mirror device that may achieve three states SO, S1 and S2 with one single electrochemicaol cell, wherein the device has a lower transmission in state S1 than in state S0 without substantially increasing the reflectivity of the device, which means that the transition from S0 to S1 corresponds essentially to a change of color of the device without the device taking the appearance of a mirror to an outside viewer, and wherein in S2, a mirror layer is reversibly deposited, and the device will have a mirror appearance.

The present invention provides an electrochromic device that can be set in states S0, S1 and S2, wherein different sets of electrochromic moieties are activated, and wherein state S2 is a state where the cell has a reversed polarity compared to state S1, all within one electrochromic cell. A single cell is thus able to achieve at least three different colors.

The disclosure provides a method for manufacturing a tinted ophthalmic device (5) having at least one curved face (14) thanks to at least one inkjet print head (6), the method comprising providing a manufacturing file comprising at least one image; wherein the at least one image is defined by a network of pixels representative of a distribution of tint material for inkjet printing a tint layer (17) on the at least one curved face of the ophthalmic device, and the at least one image is planar and determined as a function of at least curvature geometrical characteristics of the at least one curved face of the tinted ophthalmic device to manufacture.

The present invention relates to an ophthalmic article (10) comprising: an ophthalmic wafer (11) with a first face (111), a second face (112) opposite the first face and microstructures(114), the microstructures being either on the first face or between the first face and the second face; an adhesion promotion layer (13) on the first face of the ophthalmic wafer; a lens substrate (12) in contact with the adhesion promotion layer; wherein the adhesion promotion layer comprises an adhesive promoter having at least one of the following functional groups: -NH2, -SH, -NCO and -OH. The present invention also relates to a method for manufacturing the ophthalmic article.

Additive manufacturing system for producing an ophthalmic lens configured for:- depositing at least one layer of a first material on a substrate, the at least one layer having at least one first cavity,- curing the at least one layer of the first material to a first level of the curing,- placing the electronic device in the at least one first cavity,- depositing at least one layer of a second material on the at least one layer of the first material,- curing the at least one layer of the second material to a second level of the curing higher,- depositing at least one layer of a third material on the at least one layer of the second material,- curing the at least one layer of the third material to a third level of the curing.

The present disclosure relates to a method for manufacturing an ophthalmic article, comprising: - positioning (S100) a wafer from a first mold part; - adhering (S200) a first adhesive tape to both the edge of the wafer and the edge of the first mold through a first adhesive surface thereby forming a first mold cavity and obtaining a partial mold assembly with an assembly edge; - positioning (S300) a second mold part relatively to the partial mold assembly; - adhering (S400) a second adhesive tape to both the assembly edge and the edge of the second mold through a second adhesive surface; thereby forming a second mold cavity and obtaining a full mold assembly; - filling (S600, S650) the first and second mold cavities with polymerizable materials; and - polymerizing (S700) the polymerizable materials.