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De Rossi, FR

Alfredo De Rossi, Paris FR

Patent application numberDescriptionPublished
20080251704Optical Structure for Localising an Electromagnetic Field and Detector or Emitter Device Including Such a Structure - An optical structure enabling properties of the surface plasmons to be used is defined from a substantially binary, parameterizable unit pattern M10-16-2008
20080279233STRONG DISTRIBUTED FEEDBACK SEMICONDUCTOR LASER - The present invention relates to a strong distributed feedback semiconductor laser. More specifically, the invention implements a top optical waveguide (11-13-2008
20080279244SINGLE-MODE DISTRIBUTED FEEDBACK SEMICONDUCTOR LASERS - The present invention relates to the field of distributed feedback semiconductor lasers. More specifically, the invention makes it possible to develop single-mode distributed feedback lasers with a production rate close to 100% using a simple and robust technology. To this end, the invention involves introducing radiative losses on just one of the two predominant modes of a DFB laser obtained by index modulation by defining a particular refractive index profile of the active area.11-13-2008
20100007945Optical Device Comprising a GaInP-Based Photonic Crystal not Exhibiting Two-Photon Absorption - The invention relates to an optical device operating within a wavelength range centred on a reference wavelength (λ01-14-2010
20100046572Photonic-Crystal-Based Photon Extractor for High-Yield Optical Microsources - The invention relates to a photon extractor comprising a photonic-crystal-based membrane having a plane defined by two perpendicular directions, comprising an array of features and a cavity devoid of features, from which photons may be extracted, characterized in that the membrane comprises at least one region close to the cavity, said region having features distributed with a double periodicity (a02-25-2010
20100072872OPTICALLY CONTROLLED COLD-CATHODE ELECTRON TUBE - In an optically controlled cold-cathode electron tube, the emitters 03-25-2010
20100272387Photonic crystal circuit comprising a guided mode adapter and optical system including said circuit coupled with an optical fiber - The invention relates to a photonic crystal circuit comprising a guide produced in a photonic crystal membrane on the surface of a substrate and a mode adapter coupled to said guide, wherein the membrane includes a central point constituting the mode adapter having a section gradient as termination of said guide, said point being suspended so as to allow the propagation of modes in a symmetrical manner.10-28-2010

Patent applications by Alfredo De Rossi, Paris FR

Helene De Rossi, Charenton Le Pont FR

Patent application numberDescriptionPublished
20100321633PROGRESSIVE OPHTHALMIC LENS - The invention provides a progressive ophthalmic lens suitable to be worn by a person engaged in a sporting activity. For this purpose the lens has a far vision region which is enlarged, and a peripheral field of vision which is separated and whose mean sphere gradients are gentle. When a progressive lens of this kind is allocated to a wearer, the lens can have an addition value that is approximately equal to a prescribed value, or an addition value that is less than the prescribed value.12-23-2010

Hélène De Rossi, Charenton Le Pont FR

Patent application numberDescriptionPublished
20110202286Optical System Determination According to Advanced Criteria - A method implemented by computer means for calculating by optimization an optical system for example an ophthalmic lens according to at least one criterion among the following list consisting of: ocular deviation, object visual angular field in central vision, image visual angular field in central vision, pupil field ray deviation, object visual angular field in peripheral vision, image visual angular field in peripheral vision, prismatic deviation in peripheral vision, magnification in peripheral vision, lens volume, magnification of the eyes, temple shift, or a variation of preceding criteria.08-18-2011