Patents by Inventor Alain Fargeix
Alain Fargeix 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: 9711694Abstract: An optoelectronic device including an array of light-emitting diodes and photoluminescent blocks opposite at least part of the light-emitting diodes, each light-emitting diode having a lateral dimension smaller than 30 ?m, each photoluminescent block including semiconductor crystals having an average size smaller than 1 ?m, dispersed in a binding matrix.Type: GrantFiled: November 18, 2015Date of Patent: July 18, 2017Assignees: Commissariat à l'Energie Atomique et aux Energies Alternatives, ALCATEL LUCENTInventors: Ivan Christophe Robin, Hubert Bono, Alain Fargeix, Ricardo Izquierdo, Stéphanie Le Calvez, Audrey Sanchot
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Publication number: 20160141469Abstract: An optoelectronic device including an array of light-emitting diodes and photoluminescent blocks opposite at least part of the light-emitting diodes, each light-emitting diode having a lateral dimension smaller than 30 ?m, each photoluminescent block including semiconductor crystals having an average size smaller than 1 ?m, dispersed in a binding matrix.Type: ApplicationFiled: November 18, 2015Publication date: May 19, 2016Inventors: Ivan Christophe ROBIN, Hubert BONO, Alain FARGEIX, Ricardo IZQUIERDO, Stéphanie LE CALVEZ, Audrey SANCHOT
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Patent number: 8355303Abstract: The invention relates to the field of the optical recording of information on a medium, such as an optical disc. To read an optical disc in super-resolution mode, a procedure for optimizing the power of the read laser beam is implemented. This optimization is based on the observation that a correlation exists between the power allowing the disc to be read without risk in super-resolution mode and the reflectivity of the sensitive layer containing the information. The reflectivity of the optical disc is measured for several power levels of the read laser, a critical power is determined on the basis of the reflectivity measurements made, and a read power sufficiently above the critical power, so as to be well outside a range of power levels entailing risks, is selected according to the critical power.Type: GrantFiled: September 24, 2010Date of Patent: January 15, 2013Assignee: Commissariat a l'Energie AtomiqueInventors: Fabien Laulagnet, Marie-Françoise Armand, Alain Fargeix, Bérangère Hyot
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Patent number: 8263317Abstract: At least one hollow zone is formed in a stack of at least one upper layer and one lower layer. The upper layer is patterned to form at least a first hollow region passing through said upper layer. The first hollow region is extended by a second hollow region formed in the lower layer by etching through an etching mask formed on the patterned upper layer. The etching mask is formed by a resin layer, positively photosensitive to an optic radiation of a predetermined wavelength, exposed to the said optic radiation through the stack and developed. The lower and upper layers of the stack are respectively transparent and opaque to said predetermined wavelength so that the patterned upper layer acts as exposure mask for the resin layer.Type: GrantFiled: December 4, 2007Date of Patent: September 11, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Alain Fargeix, Brigitte Martin
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Patent number: 8246845Abstract: A pit is formed from a stack comprising at least one first layer formed by a material able to change physical state and a second layer made of the same material as that forming the first layer, but in a different physical state. An area of the first layer is treated to make said area go from its initial physical state to the physical state corresponding to that of the second layer. A selective etching step is then performed to eliminate said area of the first layer and the area of the second layer initially covered by the treated area of the first layer. Advantageously, said material is a phase transition material.Type: GrantFiled: January 29, 2008Date of Patent: August 21, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Christophe Martinez, Alain Fargeix
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Publication number: 20110235488Abstract: The invention relates to the field of the optical recording of information on a medium, such as an optical disc. To read an optical disc in super-resolution mode, a procedure for optimizing the power of the read laser beam is implemented. This optimization is based on the observation that a correlation exists between the power allowing the disc to be read without risk in super-resolution mode and the amplitude of the read signal which results from the reading of marks having the smallest possible dimension (marks 2 T). The amplitude of the optical disc is measured for several powers of decreasing values of the read laser, the reduction in amplitude is observed. A read power is selected as a function of the power for which a decrease (for example 5%) is noted in the amplitude measured at the start.Type: ApplicationFiled: September 24, 2010Publication date: September 29, 2011Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Fabien Laulagnet, Marie-Françoise Armand, Alain Fargeix, Bérangère Hyot
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Patent number: 7957244Abstract: The invention relates to the reading of digital optical recordings at very high density (CD, DVD, etc.). Reading is done by a PRML (“Partial Response Maximum Likelihood”) technique which uses a model of analog response to the recording of an isolated information bit. Customarily, the response model is represented by four or five signal samples having standardized levels 1 or 2. To take account of particular phenomena of super-resolution reading, the invention proposes the use of a model having 6 to 10 samples that can take 4 or 5 standardized levels. This model can result from the superposition of two simpler models having only two possible levels of samples taken from 1, 2 and 3.Type: GrantFiled: April 25, 2008Date of Patent: June 7, 2011Assignee: Commissariat a l'Energie AtomiqueInventors: Alain Fargeix, Olivier Lemonnier, Ludovic Poupinet
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Publication number: 20110075531Abstract: The invention relates to the field of the optical recording of information on a medium, such as an optical disc. To read an optical disc in super-resolution mode, a procedure for optimizing the power of the read laser beam is implemented. This optimization is based on the observation that a correlation exists between the power allowing the disc to be read without risk in super-resolution mode and the reflectivity of the sensitive layer containing the information. The reflectivity of the optical disc is measured for several power levels of the read laser, a critical power is determined on the basis of the reflectivity measurements made, and a read power sufficiently above the critical power, so as to be well outside a range of power levels entailing risks, is selected according to the critical power.Type: ApplicationFiled: September 24, 2010Publication date: March 31, 2011Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Fabien Laulagnet, Marie-Françoise Armand, Alain Fargeix, Bérangère Hyot
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Patent number: 7909957Abstract: The recording medium comprises at least a first (L1) and a second (L2) micro-structured stage assembled by an adhesive layer (4) and arranged between micro-structured bottom (2) and top substrates. A polymerizable layer forming the adhesive layer (4) is deposited on the first stage (L1). Then a micro-structured transparent matrix (5) is provisionally placed on the adhesive layer (4) so as to micro-structure the adhesive layer (4). Polymerization of the adhesive (4) is performed by exposure, through the matrix (5), with a polymerization light. Then the matrix (5) is removed and the second stage (L2) is deposited on the micro-structured adhesive layer (4). Then an additional adhesive layer (9) is deposited on the second stage (L2) and the micro-structured matrix (5) is definitively placed on the additional adhesive layer (9) so as to form the top substrate.Type: GrantFiled: May 17, 2005Date of Patent: March 22, 2011Assignees: Commissariat A l'Energie Atomique, MPO InternationalInventors: Jacques Raby, Alain Fargeix, Marc Plissonnier, Marine Ruty
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Publication number: 20100059477Abstract: At least one hollow zone is formed in a stack of at least one upper layer and one lower layer. The upper layer is patterned to form at least a first hollow region passing through said upper layer. The first hollow region is extended by a second hollow region formed in the lower layer by etching through an etching mask formed on the patterned upper layer. The etching mask is formed by a resin layer, positively photosensitive to an optic radiation of a predetermined wavelength, exposed to the said optic radiation through the stack and developed. The lower and upper layers of the stack are respectively transparent and opaque to said predetermined wavelength so that the patterned upper layer acts as exposure mask for the resin layer.Type: ApplicationFiled: December 4, 2007Publication date: March 11, 2010Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Alain Fargeix, Brigitte Martin
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Publication number: 20080292785Abstract: A pit is formed from a stack comprising at least one first layer formed by a material able to change physical state and a second layer made of the same material as that forming the first layer, but in a different physical state. An area of the first layer is treated to make said area go from its initial physical state to the physical state corresponding to that of the second layer. A selective etching step is then performed to eliminate said area of the first layer and the area of the second layer initially covered by the treated area of the first layer. Advantageously, said material is a phase transition material.Type: ApplicationFiled: January 29, 2008Publication date: November 27, 2008Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Christophe Martinez, Alain Fargeix
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Publication number: 20080274323Abstract: The recording medium comprises at least a first (L1) and a second (L2) micro-structured stage assembled by an adhesive layer (4) and arranged between micro-structured bottom (2) and top substrates. A polymerizable layer forming the adhesive layer (4) is deposited on the first stage (L1). Then a micro-structured transparent matrix (5) is provisionally placed on the adhesive layer (4) so as to micro-structure the adhesive layer (4). Polymerization of the adhesive (4) is performed by exposure, through the matrix (5), with a polymerization light. Then the matrix (5) is removed and the second stage (L2) is deposited on the micro-structured adhesive layer (4). Then an additional adhesive layer (9) is deposited on the second stage (L2) and the micro-structured matrix (5) is definitively placed on the additional adhesive layer (9) so as to form the top substrate.Type: ApplicationFiled: May 17, 2005Publication date: November 6, 2008Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE, MPO INTERNATIONALInventors: Jacques Raby, Alain Fargeix, Marc Plissonnier, Marine Ruty
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Publication number: 20080267037Abstract: The invention relates to the reading of digital optical recordings at very high density (CD, DVD, etc.). Reading is done by a PRML (“Partial Response Maximum Likelihood”) technique which uses a model of analog response to the recording of an isolated information bit. Customarily, the response model is represented by four or five signal samples having standardized levels 1 or 2. To take account of particular phenomena of super-resolution reading, the invention proposes the use of a model having 6 to 10 samples that can take 4 or 5 standardized levels. This model can result from the superposition of two simpler models having only two possible levels of samples taken from 1, 2 and 3.Type: ApplicationFiled: April 25, 2008Publication date: October 30, 2008Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Alain Fargeix, Olivier Lemonnier, Ludovic Poupinet
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Publication number: 20040257967Abstract: The present invention relates to an optical medium, having on at least one face (10), a superficial recording level (20) and a buried recording level (30), capable of being read and recorded by means of an optical beam having a wave length between 620 and 670 nanometers, and wherein each of the levels has a reflectivity between 6% and 12%.Type: ApplicationFiled: April 21, 2004Publication date: December 23, 2004Inventors: Bernard Bechevet, Ludovic Poupinet, Alain Fargeix, Veronique Gehanno
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Publication number: 20030147341Abstract: The invention relates to a multi-level optical recording medium for a read/write system using a laser beam, comprising at least one substrate (4a, 4b) and a set of layers forming a deep level (12), and at least one semi-transparent level (10), each of these levels having two stable states reversible under the effect of laser radiation,Type: ApplicationFiled: January 29, 2003Publication date: August 7, 2003Inventors: Alain Fargeix, Bernard Rolland, Veronique Gehanno, Jean-Michel Bruneau
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Patent number: 6537801Abstract: A device for reading a biochip including plural molecular recognition areas and plural optical positioning marks, associated with recognition areas. The device includes an optical head capable of projecting excitation light onto the biochip. A device is provided to effectuate relative displacement between the head and the biochip. A first optical analysis system is associated with the optical head to receive any light arriving from recognition areas. A second optical positioning system is associated with the optical head to receive any light from at least one guide track and/or optical positioning mark. A device is further provided for servocontrolling scanning by the optical head. Such a device may find particular application to biological and chemical analysis.Type: GrantFiled: March 28, 2001Date of Patent: March 25, 2003Assignees: Commissariat a l'Energie Atomique, Biomerieux S.A.Inventors: Michel Ida, Alain Fargeix, François Perraut, Alexandre Lagrange