Abstract: The invention relates to an optical article having a Bayer value determined in accordance with the ASTM F735-81 standard higher than or equal to 7, comprising a substrate having at least one main face successively coated with a monolayer sub-layer having a thickness higher than or equal to 250 nm and a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less. The ratio: (I) is higher than or equal to 1.5, and/or the deposition of the high refractive index layer of the interferential coating having a refractive index higher than 1.55 and a thickness higher than or equal to 15 nm that is the furthest from the substrate has been carried out under ionic assistance.

Abstract: Disclosed is a lamination machine including: a film support for receiving a functional film to be laminated; an article support configured to receive and position the optical article in a predetermined orientation; and an actuating member configured to move the film support and the article support toward each other for laminating at a predetermined pressure the functional film received in the film support onto the optical article received within the article support. The article support is a blocker support configured to receive a surfacing blocker onto which the optical article is to be disposed for lamination, the article support being further configured to transmit laminating forces induced by the predetermined pressure to the lamination machine during a lamination operation.

Abstract: An optical article provided in a form suitable for simultaneous lamination of a pressure sensitive adhesive layer and of a thermoplastic film, the said optical article comprising a convex and a concave optical surface, wherein the convex and/or the concave optical surface is a receiving surface intended to receive the pressure sensitive adhesive on which the thermoplastic film is intended to be arranged and wherein the said receiving surface has an arithmetic average profile roughness greater or equal to 0.01 ?m and less or equal to 0.3 ?m and/or wherein the said receiving surface has a profile roughness root mean square slope greater or equal to 0.2° and less or equal to 1.2°. A method for manufacturing an optical device using said optical article.

Abstract: An optical article provided in a form suitable for simultaneous lamination of a pressure sensitive adhesive layer and of a thermoplastic film, the said optical article comprising a convex and a concave optical surface, wherein the convex and/or the concave optical surface is a receiving surface intended to receive the pressure sensitive adhesive on which the thermoplastic film is intended to be arranged and wherein the said receiving surface has an arithmetic average profile roughness greater or equal to 0.01 ?m and less or equal to 0.3 ?m and/or wherein the said receiving surface has a profile roughness root mean square slope greater or equal to 0.2° and less or equal to 1.2°. A method for manufacturing an optical device using said optical article.

Abstract: An optical article provided in a form suitable for simultaneous lamination of a pressure sensitive adhesive layer and of a thermoplastic film, the said optical article comprising a convex and a concave optical surface, wherein the convex and/or the concave optical surface is a receiving surface intended to receive the pressure sensitive adhesive on which the thermoplastic film is intended to be arranged and wherein the said receiving surface has an arithmetic average profile roughness greater or equal to 0.01 ?m and less or equal to 0.3 ?m and/or wherein the said receiving surface has a profile roughness root mean square slope greater or equal to 0.2° and less or equal to 1.2°. A method for manufacturing an optical device using said optical article.

Abstract: A lens blocking/deblocking method/device to adhere an ophthalmic lens to a lens holding block A method for blocking an optical lens component (100) on holding unit (200) having bottom part (230) inserted and fixed in lens machining tool (400) and an upper part (250) having upper assembling surface (210) and external side parts (241). The method provides the optical lens component (100) with layer (320) of one-side adhesive tape arranged on bottom of component (100) to cover at least partially bottom (120); (S20) providing thermoplastic material on upper assembling surface (210). The thermoplastic material is heated where a part thereof flows under moderate pressure; (S30) placing the optical lens (100) with layer (320) on thermoplastic material when the thermoplastic is softened; (S40) applying pushing force (P1) on the optical lens (100), to spread the thermoplastic between layer (320) and upper assembling surface (210) and covers external side parts (241).

Abstract: A method for blocking an optical lens (100) on a holding unit (200) thanks to a thermoplastic material layer (310) comprising the steps of: a) providing around the holding unit (200) a removable part (500) comprising an upper part surface (510) which is arranged so as to extend the upper assembling surface (210) of the holding unit and not to contact the bottom lens surface (120); b) providing a predetermined volume of a thermoplastic material; c) orientating the lens (100) in a desired spatial configuration; d) positioning the lens (100) contacting the thermoplastic material of step b) at a soften or melted state and pressing the lens (100) so as to keep the lens spatial configuration constant and to let the thermoplastic material flow from the upper assembling surface (210) of the holding unit to at least a part of the upper part surface (510) of the removable part (500); e) removing the removable part.

Abstract: A method of deblocking a lens component (1) fixed on a thermoplastic block (2) of an ophthalmic lens block comprising the steps of: a) applying a pushing strain on the surface (14) of the lens component fixed on the thermoplastic block; b) providing a warm gas flow at the interface between the lens component (1) and the thermoplastic block; and maintaining the pushing strain during the step of providing the warm gas flow at the interface between the lens component and the thermoplastic block, wherein the stress applied to obtain the pushing strain of step a) is greater or equal to 0.1 MPa and/or less or equal to 1 Mpa, and wherein the temperature of the warm gas flow of step b) is greater or equal to 30° and/or less or equal to 70° C.

Abstract: A lens blocking/deblocking method/device to adhere an ophthalmic lens to a lens holding block A method for blocking an optical lens component (100) on holding unit (200) having bottom part (230) inserted and fixed in lens machining tool (400) and an upper part (250) having upper assembling surface (210) and external side parts (241).The method provides the optical lens component (100) with layer (320) of one-side adhesive tape arranged on bottom of component (100) to cover at least partially bottom (120); (S20) providing thermoplastic material on upper assembling surface (210). The thermoplastic material is heated where a part thereof flows under moderate pressure; (S30) placing the optical lens (100) with layer (320) on thermoplastic material when the thermoplastic is softened; (S40) applying pushing force (P1) on the optical lens (100), to spread the thermoplastic between layer (320) and upper assembling surface (210) and covers external side parts (241).

Abstract: Use of a thermoplastic material for blocking an optical substrate (100) in a machining position, wherein the thermoplastic material is formulated from a composition comprising a shellac and a plasticizer where the shellac and the plasticizer are chosen so as to have the softening point of the thermoplastic material greater than or equal to 60° C. and smaller than or equal to 85° C.

Abstract: A method of deblocking an ophthalmic lens component (100) blocked on a thermoplastic layer (310) arranged on the holding surface (210) of a lens holding block (200) comprising the step of applying a pushing force on the thermoplastic layer (310), wherein the pushing force is greater or equal to 100 N and smaller or equal to 1000 N and wherein the pushing force is applied in a region of the thermoplastic layer (310) situated at a distance of at least 17.5 mm from the fitting point or prism reference point of the ophthalmic lens component (100).

Abstract: A method for blocking an optical lens (10) comprising a moving step in which the optical lens (10) is moved from a first reference position (P1) to a second reference position (P2), so as to be in contact with a blocking material (14), the blocking material (14) being in a molding block (16), the second reference position (P2) being a function of the first reference position (P1), wherein the method further comprises an orienting step in which the optical lens (10) is oriented in the first reference position (P1) and placed on a plurality of pre-located pins (18) which are vertically translated into a preset position (Z1, Z2, Z3), so that, when the optical lens (10) is placed on the plurality of pre-located pins (18), the optical lens (10) is oriented in the first reference position (P1) where the prism of the optical lens (10) corresponds to a desired prism (?f, ?f, Zf).

Abstract: A method of deblocking an ophthalmic lens component (100) blocked on a thermoplastic layer (310) arranged on the holding surface (210) of a lens holding block (200) comprising the step of applying a pushing force on the thermoplastic layer (310), wherein the pushing force is greater or equal to 100 N and smaller or equal to 1000 N and wherein the pushing force is applied in a region of the thermoplastic layer (310) situated at a distance of at least 17.5 mm from the fitting point or prism reference point of the ophthalmic lens component (100).

Abstract: A method for blocking an optical lens (100) on a holding unit (200) thanks to a thermoplastic material layer (310) comprising the steps of: a) providing around the holding unit (200) a removable part (500) comprising an upper part surface (510) which is arranged so as to extend the upper assembling surface (210) of the holding unit and not to contact the bottom lens surface (120); b) providing a predetermined volume of a thermoplastic material; c) orientating the lens (100) in a desired spatial configuration; d) positioning the lens (100) contacting the thermoplastic material of step b) at a soften or melted state and pressing the lens (100) so as to keep the lens spatial configuration constant and to let the thermoplastic material flow from the upper assembling surface (210) of the holding unit to at least a part of the upper part surface (510) of the removable part (500); e) removing the removable part.

Abstract: Use of a thermoplastic material for blocking an optical substrate (100) in a machining position, wherein the thermoplastic material is formulated from a composition comprising a shellac and a plasticizer where the shellac and the plasticizer are chosen so as to have the softening point of the thermoplastic material greater than or equal to 60° C. and smaller than or equal to 85° C.

Abstract: A method for blocking and/or deblocking an optical lens (100) on a heat conducting holding unit (200) comprising an upper assembling surface (210) comprising the steps of: a) providing first layer consisting of an adhesive tape (330) on the upper assembling surface (210) of the holding unit; b) providing a second layer consisting of a layer (310 comprising a thermoplastic material arranged on said adhesive tape (330); c) providing the optical lens (100) with a third layer consisting of an adhesive tape (320) arranged on the bottom surface (120) of said optical lens; d) placing the optical lens (100) with the third layer (320) on the second layer (310) consisting of a layer comprising a thermoplastic material when the thermoplastic material is soften or melted. A method for deblocking said optical lens (100) thanks to heating the holding unit (200).

Abstract: The invention relates to a binocular device for displaying information, the device comprising a support for placing on the nose and supporting a right display element and a left display element each designed to be placed in front of an eye and each comprising a light guide for receiving a beam of light rays emitted by a beam generator device towards an inlet face and for propagating the beam to an outlet face where the beam is directed towards the corresponding eye, the binocular device having an arrangement for adjusting the pupillary distance by moving at least one of the light guides relative to said support so as to adjust the distance between the light guides. According to the invention, said light guides are disposed over a said support and are held by a strip disposed over the light guides and secured to said support by means of at least one spacer, at least one slack takeup means being interposed between said strip and said light guides.

Abstract: A method of deblocking a lens component (1) fixed on a thermoplastic block (2) of an ophthalmic lens block comprising the steps of: a) applying a pushing strain on the surface (14) of the lens component fixed on the thermoplastic block; b) providing a warm gas flow at the interface between the lens component (1) and the thermoplastic block; and maintaining the pushing strain during the step of providing the warm gas flow at the interface between the lens component and the thermoplastic block, wherein the stress applied to obtain the pushing strain of step a) is greater or equal to 0.1 MPa and/or less or equal to 1 Mpa, and wherein the temperature of the warm gas flow of step b) is greater or equal to 30° and/or less or equal to 70° C.

Abstract: A method for blocking an optical lens (10) comprising a moving step in which the optical lens (10) is moved from a first reference position (P1) to a second reference position (P2), so as to be in contact with a blocking material (14), the blocking material (14) being in a molding block (16), the second reference position (P2) being a function of the first reference position (P1), wherein the method further comprises an orienting step in which the optical lens (10) is oriented in the first reference position (P1) and placed on a plurality of pre-located pins (18) which are vertically translated into a preset position (Z1, Z2, Z3), so that, when the optical lens (10) is placed on the plurality of pre-located pins (18), the optical lens (10) is oriented in the first reference position (P1) where the prism of the optical lens (10) corresponds to a desired prism (?f, ?f, Zf).

Abstract: The installation includes elements for the temporary injection of inert gas; and at least one individual and autonomous casing (6) provided with a window (13) and including receiving elements for a support (3) carrying an ophthalmic lens (2), and sealing elements (21) adapted to form around the ophthalmic lens (2) a sealed enclosure, that enclosure including a non-return inlet member adapted to cooperate with the elements for the temporary injection of inert gas.