Patents by Inventor Franck Ledien
Franck Ledien has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10983367Abstract: The invention relates to an ophthalmic lens (1), in particular for sunglasses, comprising: a first outer layer (9) of transparent substrate, comprising a rear face (9AR), intended to be orientated towards the eye of a user of said ophthalmic lens (1), and a front face (9AV) intended to be orientated towards the field of vision (13) of the user, intended to form the convex, front outer surface of the ophthalmic lens (1), a second outer layer (10) of transparent substrate, comprising a rear face (10AR) orientated towards the eye of the user, intended to form the concave, rear outer face of the ophthalmic lens (1) orientated towards the eye of the user, and a front face (10AR) orientated towards the field of vision of the user, characterized in that the lens further comprises an interferometric mirror (21) disposed between the first outer layer (9) and the second outer layer (10).Type: GrantFiled: July 25, 2017Date of Patent: April 20, 2021Assignee: BNL EUROLENSInventors: Didier Clerc, Franck Ledien
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Patent number: 10545272Abstract: A tinted polarizing optical element includes a pre-manufactured polarizing optical assembly. The polarizing optical assembly includes a first layer provided from a thermoplastic or a thermosetting material; a second layer consisting of a polarizing film; and a third layer provided from a thermoplastic or a thermosetting material, wherein the second layer consisting of the polarizing film is disposed between the first layer and the third layer. The optical element further includes a fourth layer provided from a tinted thermoplastic material, which is disposed over the polarizing optical assembly such that the fourth layer is spaced apart from the polarizing film by at least one layer. The tint of the fourth layer is obtained independently from the polarizing optical assembly. The optical element also includes a fifth layer provided from a crystal thermoplastic material, which has a finished surface to provide a corrective effect.Type: GrantFiled: May 4, 2018Date of Patent: January 28, 2020Assignee: BNL EurolensInventors: Didier Clerc, Franck Ledien
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Patent number: 10527869Abstract: An ophthalmic lens comprising a substrate is provided with the lens having a transmission spectrum such that the mean transmission value in the wavelength range between 380 nm inclusive and 780 nm inclusive is less than 60%, the mean transmission value at wavelengths less than or equal to 400 nm is less than 1%, the mean transmission value at wavelengths greater than 400 nm inclusive and less than 500 nm inclusive is less than 30% with a transmission minimum of less than 10% between 425 nm and 445 nm inclusive and the mean transmission value in the wavelength range between 400 nm and 500 nm has a first transmission maximum located between 405 nm and 425 nm.Type: GrantFiled: August 29, 2018Date of Patent: January 7, 2020Assignee: BNL EurolensInventors: Sébastien Martins, Didier Clerc, Franck Ledien
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Publication number: 20190179169Abstract: The invention relates to an ophthalmic lens (1), in particular for sunglasses, comprising: a first outer layer (9) of transparent substrate, comprising a rear face (9AR), intended to be orientated towards the eye of a user of said ophthalmic lens (1), and a front face (9AV) intended to be orientated towards the field of vision (13) of the user, intended to form the convex, front outer surface of the ophthalmic lens (1), a second outer layer (10) of transparent substrate, comprising a rear face (10AR) orientated towards the eye of the user, intended to form the concave, rear outer face of the ophthalmic lens (1) orientated towards the eye of the user, and a front face (10AR) orientated towards the field of vision of the user, characterized in that the lens further comprises an interferometric mirror (21) disposed between the first outer layer (9) and the second outer layer (10).Type: ApplicationFiled: July 25, 2017Publication date: June 13, 2019Inventors: Didier CLERC, Franck LEDIEN
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Publication number: 20180373063Abstract: An ophthalmic lens comprising a substrate is provided with the lens having a transmission spectrum such that the mean transmission value in the wavelength range between 380 nm inclusive and 780 nm inclusive is less than 60%, the mean transmission value at wavelengths less than or equal to 400 nm is less than 1%, the mean transmission value at wavelengths greater than 400 nm inclusive and less than 500 nm inclusive is less than 30% with a transmission minimum of less than 10% between 425 nm and 445 nm inclusive and the mean transmission value in the wavelength range between 400 nm and 500 nm has a first transmission maximum located between 405 nm and 425 nm.Type: ApplicationFiled: August 29, 2018Publication date: December 27, 2018Inventors: Sébastien MARTINS, Didier CLERC, Franck LEDIEN
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Patent number: 10088693Abstract: An ophthalmic lens comprising a substrate is provided with the lens having a transmission spectrum such that the mean transmission value in the wavelength range between 380 nm inclusive and 780 nm inclusive is less than 60%, the mean transmission value at wavelengths less than or equal to 400 nm is less than 1%, the mean transmission value at wavelengths greater than 400 nm inclusive and less than 500 nm inclusive is less than 30% with a transmission minimum of less than 10% between 425 nm and 445 nm inclusive and the mean transmission value in the wavelength range between 400 nm and 500 nm has a first transmission maximum located between 405 nm and 425 nm.Type: GrantFiled: February 1, 2016Date of Patent: October 2, 2018Assignee: BNL EUROLENSInventors: Sébastien Martins, Didier Clerc, Franck Ledien
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Publication number: 20180252853Abstract: A tinted polarizing optical element includes a pre-manufactured polarizing optical assembly. The polarizing optical assembly includes a first layer provided from a thermoplastic or a thermosetting material; a second layer consisting of a polarizing film; and a third layer provided from a thermoplastic or a thermosetting material, wherein the second layer consisting of the polarizing film is disposed between the first layer and the third layer. The optical element further includes a fourth layer provided from a tinted thermoplastic material, which is disposed over the polarizing optical assembly such that the fourth layer is spaced apart from the polarizing film by at least one layer. The tint of the fourth layer is obtained independently from the polarizing optical assembly. The optical element also includes a fifth layer provided from a crystal thermoplastic material, which has a finished surface to provide a corrective effect.Type: ApplicationFiled: May 4, 2018Publication date: September 6, 2018Applicant: BNL EurolensInventors: Didier Clerc, Franck Ledien
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Patent number: 9989686Abstract: The invention relates to a tinted polarizing optical element (1), including a polarizing assembly (5) consisting of at least a first layer (7) and a second layer (9) made of a thermoplastic or thermosetting material and sandwiching a polarizing film (11) therebetween, and to a method for manufacturing said optical element. The latter further comprises a third layer (13) made of a tinted thermoplastic material adhering, by means of injection, to the second layer (9), characterized in that the element includes a fourth layer (15) which is made of a crystal thermoplastic material adhering, by means of injection, to the third layer (13), and which is to be surfaced so as to achieve a corrective effect.Type: GrantFiled: September 4, 2012Date of Patent: June 5, 2018Assignee: BNL EurolensInventors: Didier Clerc, Franck Ledien
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Patent number: 9937676Abstract: The invention relates to a method for creating a viewing screen (3) having an injection overmolded insert (9). Said method includes the steps of: placing an insert (9), to be overmolded, into an injection mold (1); holding the insert (9) by at least one suction nozzle (21) built into the injection mold (1); injecting, into the mold (1), a thermoplastic material for forming a mechanical substrate layer for the viewing screen; and removing the thus-formed viewing screen (3) from the mold.Type: GrantFiled: March 7, 2013Date of Patent: April 10, 2018Assignee: BNL EurolensInventors: Didier Clerc, Sebastien Martins, Franck Ledien
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Publication number: 20160223838Abstract: The invention relates to an ophthalmic lens (1) comprising a substrate (13), said lens having a transmission spectrum such that: the mean transmission in the wavelength range between 380 nm inclusive and 780 nm inclusive is less than 60%; the mean transmission at wavelengths less than or equal to 400 nm is less than 1%, preferably less than 0.5%, very preferably less than 0.1%; the mean transmission at wavelengths greater than 400 nm inclusive and less than 500 nm inclusive is less than 30% with a transmission minimum (100) of less than 10%, preferably less than 5%, very preferably less than 1% between 425 nm and 445 nm inclusive.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Inventors: Sébastien MARTINS, Didier CLERC, Franck LEDIEN
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Patent number: 9229247Abstract: The invention relates to a polarizing lens consisting, in order, of a polyamide mechanical substrate, a polyvinyl alcohol intermediate layer, and a cellulose triacetate outer layer. The invention also relates to a method for manufacturing such a lens.Type: GrantFiled: March 7, 2013Date of Patent: January 5, 2016Assignee: BNL EUROLENSInventors: Didier Clerc, Sebastien Martins, Franck Ledien
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Patent number: 9057823Abstract: A polarizing lens is constituted in succession by a mechanical support layer made of polycarbonate, the intermediate layer made of polyvinyl alcohol, and an outer layer made of cellulose triacetate. The invention also provides a method of fabricating such a lens.Type: GrantFiled: March 16, 2012Date of Patent: June 16, 2015Assignee: BNL EUROLENSInventors: Didier Clerc, Franck Ledien
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Publication number: 20150036097Abstract: The invention relates to a polarizing lens consisting, in order, of a polyamide mechanical substrate, a polyvinyl alcohol intermediate layer, and a cellulose triacetate outer layer. The invention also relates to a method for manufacturing such a lens.Type: ApplicationFiled: March 7, 2013Publication date: February 5, 2015Inventors: Didier Clerc, Sebastien Martins, Franck Ledien
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Publication number: 20150029586Abstract: The invention relates to a method for creating a viewing screen (3) having an injection overmolded insert (9). Said method includes the steps of: placing an insert (9), to be overmolded, into an injection mold (1); holding the insert (9) by at least one suction nozzle (21) built into the injection mold (1); injecting, into the mold (1), a thermoplastic material for forming a mechanical substrate layer for the viewing screen; and removing the thus-formed viewing screen (3) from the mold.Type: ApplicationFiled: March 7, 2013Publication date: January 29, 2015Inventors: Didier Clerc, Sebastien Martins, Franck Ledien
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Publication number: 20140334000Abstract: The invention relates to a tinted polarizing optical element (1), including a polarizing assembly (5) consisting of at least a first layer (7) and a second layer (9) made of a thermoplastic or thermosetting material and sandwiching a polarizing film (11) therebetween, and to a method for manufacturing said optical element. The latter further comprises a third layer (13) made of a tinted thermoplastic material adhering, by means of injection, to the second layer (9), characterized in that the element includes a fourth layer (15) which is made of a crystal thermoplastic material adhering, by means of injection, to the third layer (13), and which is to be surfaced so as to achieve a corrective effect.Type: ApplicationFiled: September 4, 2012Publication date: November 13, 2014Applicant: BNL EurolensInventors: Didier Clerc, Franck Ledien
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Publication number: 20130329185Abstract: A polarizing lens is constituted in succession by a mechanical support layer made of polycarbonate, the intermediate layer made of polyvinyl alcohol, and an outer layer made of cellulose triacetate. The invention also provides a method of fabricating such a lens.Type: ApplicationFiled: March 16, 2012Publication date: December 12, 2013Applicant: BNL EUROLENSInventors: Didier Clerc, Franck Ledien