Patents by Inventor Lotfi Redjem-Saad
Lotfi Redjem-Saad 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: 10962196Abstract: A lighting module for a motor vehicle including: a support plate; at least one source of light which is arranged on a first face of the support plate; a heat dissipater which is arranged on a second face of the support plate, opposite the first face; a fan which is arranged between the heat dissipater and a plenum, the fan being designed to aspirate a flow of hot air which is dissipated by the heat dissipater, and is obtained from an incoming flow of air; a plenum which is designed to cover the fan, the plenum including a peripheral skirt which is designed to surround the heat dissipater; an optical assembly which cooperates with rays of light of the at least one source of light, in order to produce a light beam.Type: GrantFiled: June 22, 2018Date of Patent: March 30, 2021Assignee: VALEO VISIONInventors: Lotfi Redjem Saad, Francois Berrezai, Francois Cormier
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Patent number: 10738964Abstract: A lighting module for a vehicle, the lighting module including a cooling circuit including a first chamber delimited by a first heat dissipation device, and designed for the cooling of at least one first lighting element of the lighting module, a second chamber delimited by a second heat dissipation device, and designed for the cooling of at least one second lighting element of the lighting module, and a third chamber delimited by a ventilation device. The third chamber separates the first chamber and the second chamber from one another.Type: GrantFiled: December 21, 2018Date of Patent: August 11, 2020Assignee: VALEO VISIONInventors: Christophe Cleto, Lotfi Redjem Saad
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Patent number: 10488033Abstract: Device for cooling a light source, laser diode, including a first heatsink equipped with a core provided with a bore extending along a lighting axis and forming a housing for receiving such a light source, and including first fins extending from the core outward, wherein the device includes a second heatsink that has second fins extending toward the lighting axis from a peripheral portion arranged around the lighting axis, at least one second fin of the second heatsink being at least partially interleaved between first fins of the first heat sink.Type: GrantFiled: March 20, 2018Date of Patent: November 26, 2019Assignee: VALEO VISIONInventors: Lotfi Redjem Saad, Sylvain Tournemine, Christophe Duval
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Patent number: 10465877Abstract: An optical module for a motor vehicle including a light source, a heat sink including a plate having a front face for supporting the light source, and including a rear face spiked with cooling fins, a device for producing an airflow. The heat sink includes at least one vent which passes through the plate of the heat sink in proximity to the light source in order to allow the airflow to circulate longitudinally between the front and the rear of the heat sink.Type: GrantFiled: March 16, 2018Date of Patent: November 5, 2019Assignee: VALEO VISIONInventors: Vanesa Sanchez, Lotfi Redjem Saad, Eric Mornet, Francois Berrezai
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Patent number: 10451244Abstract: A headlamp, notably for a motor vehicle, comprising several light modules and an air cooling duct for the light modules with at least one air inlet for one or more fans, several air outlets to the light modules, and a passage connecting the one or more inlets with the outlets. The duct comprises at least one attached separating wall of the passage.Type: GrantFiled: September 29, 2016Date of Patent: October 22, 2019Assignee: Valeo VisionInventors: Francois Berrezai, Lotfi Redjem-Saad
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Patent number: 10352526Abstract: A cooling member for a lighting and/or signaling system for a motor vehicle comprising a base and at least one heat dissipating device with a thermal conduction link to the base, the dissipating device comprising a plurality of dissipating elements, wherein each dissipating element comprises at least one dissipating wall extending from a fixing face. The embodiments relate also to a lighting and/or signaling system and to a method for producing the cooling member.Type: GrantFiled: August 4, 2015Date of Patent: July 16, 2019Assignee: Valeo VisionInventors: Marc Duarte, Eric Stefura, Paul Jacquemin, Christophe Cleto, Lotfi Redjem Saad, Brahim El Hachir
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Publication number: 20190195463Abstract: A lighting module for a vehicle, the lighting module including a cooling circuit including a first chamber delimited by a first heat dissipation device, and designed for the cooling of at least one first lighting element of the lighting module, a second chamber delimited by a second heat dissipation device, and designed for the cooling of at least one second lighting element of the lighting module, and a third chamber delimited by a ventilation device. The third chamber separates the first chamber and the second chamber from one another.Type: ApplicationFiled: December 21, 2018Publication date: June 27, 2019Applicant: VALEO VISIONInventors: Christophe CLETO, Lotfi REDJEM SAAD
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Patent number: 10281130Abstract: A light-emitting device for an automotive vehicle headlamp lighting module, that includes a light source, comprising a carrier comprising two opposite faces, a first face forming a first joining surface; an optoelectronic chip that is fastened to the second face of the carrier; connecting pins that stick out with respect to the first face of the carrier and that are connected to the chip; the light-emitting device furthermore including a heat exchanger comprising a second joining surface that is connected to the first joining surface. The two joining surfaces are joined to each other by means of an adhesive material; each of the connecting pins includes a portion extending radially in the adhesive material; and the connecting pins do not pass through the second joining surface.Type: GrantFiled: November 21, 2016Date of Patent: May 7, 2019Assignee: Valeo VisionInventors: Stephan Sommerschuh, Lotfi Redjem Saad
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Publication number: 20180372298Abstract: A lighting module for a motor vehicle including: a support plate; at least one source of light which is arranged on a first face of the support plate; a heat dissipater which is arranged on a second face of the support plate, opposite the first face; a fan which is arranged between the heat dissipater and a plenum, the fan being designed to aspirate a flow of hot air which is dissipated by the heat dissipater, and is obtained from an incoming flow of air; a plenum which is designed to cover the fan, the plenum including a peripheral skirt which is designed to surround the heat dissipater; an optical assembly which cooperates with rays of light of the at least one source of light, in order to produce a light beam.Type: ApplicationFiled: June 22, 2018Publication date: December 27, 2018Applicant: VALEO VISIONInventors: Lotfi REDJEM SAAD, Francois Berrezai, Francois Cormier
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Publication number: 20180274775Abstract: Device for cooling a light source, laser diode, including a first heatsink equipped with a core provided with a bore extending along a lighting axis and forming a housing for receiving such a light source, and including first fins extending from the core outward, wherein the device includes a second heatsink that has second fins extending toward the lighting axis from a peripheral portion arranged around the lighting axis, at least one second fin of the second heatsink being at least partially interleaved between first fins of the first heat sink.Type: ApplicationFiled: March 20, 2018Publication date: September 27, 2018Applicant: VALEO VISIONInventors: Lotfi REDJEM SAAD, Sylvain TOURNEMINE, Christophe DUVAL
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Publication number: 20180266646Abstract: An optical module for a motor vehicle including a light source, a heat sink including a plate having a front face for supporting the light source, and including a rear face spiked with cooling fins, a device for producing an airflow. The heat sink includes at least one vent which passes through the plate of the heat sink in proximity to the light source in order to allow the airflow to circulate longitudinally between the front and the rear of the heat sink.Type: ApplicationFiled: March 16, 2018Publication date: September 20, 2018Applicant: VALEO VISIONInventors: Vanesa Sanchez, Lotfi Redjem Saad, Eric Mornet, Francois Berrezai
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Patent number: 10018320Abstract: A light module comprises two submodules added one against the other and in each of which a light source is associated with an optical deflection element for the deflection of the light rays emitted toward a projection optical device arranged at the output of the module. Each submodule comprises a half-shell forming, in combination with the other half-shell, a space that is enclosed apart from at least one aperture produced in each half-shell to form air circulation cooling means.Type: GrantFiled: March 29, 2016Date of Patent: July 10, 2018Assignee: VALEO VISIONInventors: Lotfi Redjem-Saad, Eric Stefura, Paul Jacquemin, Brahim El Hachir
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Publication number: 20170219182Abstract: A cooling member for a lighting and/or signaling system for a motor vehicle comprising a base and at least one heat dissipating device with a thermal conduction link to the base, the dissipating device comprising a plurality of dissipating elements, wherein each dissipating element comprises at least one dissipating wall extending from a fixing face. The embodiments relate also to a lighting and/or signaling system and to a method for producing the cooling member.Type: ApplicationFiled: August 4, 2015Publication date: August 3, 2017Inventors: Marc Duarte, Eric Stefura, Paul Jacquemin, Christophe Cleto, Lotfi Redjem Saad, Brahim El Hachir
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Publication number: 20170153003Abstract: A light-emitting device for an automotive vehicle headlamp lighting module, that includes a light source, comprising a carrier comprising two opposite faces, a first face forming a first joining surface; an optoelectronic chip that is fastened to the second face of the carrier; connecting pins that stick out with respect to the first face of the carrier and that are connected to the chip; the light-emitting device furthermore including a heat exchanger comprising a second joining surface that is connected to the first joining surface. The two joining surfaces are joined to each other by means of an adhesive material; each of the connecting pins includes a portion extending radially in the adhesive material; and the connecting pins do not pass through the second joining surface.Type: ApplicationFiled: November 21, 2016Publication date: June 1, 2017Inventors: Stephan Sommerschuh, Lotfi Redjem Saad
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Publication number: 20170102120Abstract: A headlamp, notably for a motor vehicle, comprising several light modules and an air cooling duct for the light modules with at least one air inlet for one or more fans, several air outlets to the light modules, and a passage connecting the one or more inlets with the outlets. The duct comprises at least one attached separating wall of the passage.Type: ApplicationFiled: September 29, 2016Publication date: April 13, 2017Inventors: Francois Berrezai, Lotfi Redjem-Saad
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Publication number: 20160290589Abstract: A light module comprises two submodules added one against the other and in each of which a light source is associated with an optical deflection element for the deflection of the light rays emitted toward a projection optical device arranged at the output of the module. Each submodule comprises a half-shell forming, in combination with the other half-shell, a space that is enclosed apart from at least one aperture produced in each half-shell to form air circulation cooling means.Type: ApplicationFiled: March 29, 2016Publication date: October 6, 2016Inventors: Lotfi Redjem-Saad, Eric Stefura, Paul Jacquemin, Brahim El Hachir