Patent application number | Description | Published |
20080251704 | Optical 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 M | 10-16-2008 |
20080279233 | STRONG 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 |
20080279244 | SINGLE-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 |
20100007945 | Optical 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 (λ | 01-14-2010 |
20100046572 | Photonic-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 (a | 02-25-2010 |
20100072872 | OPTICALLY CONTROLLED COLD-CATHODE ELECTRON TUBE - In an optically controlled cold-cathode electron tube, the emitters | 03-25-2010 |
20100272387 | Photonic 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 |
20130177275 | APPARATUS AND METHOD FOR GENERATING FEMTOSECOND PULSES VIA TEMPORAL SOLITON COMPRESSION IN PHOTONIC CRYSTALS - Exemplary embodiments of an apparatus, method, and computer readable medium are provided for producing a radiation. For example, a radiation having at least one pulse with a pulse-width of less than approximately 30 picoseconds can be produced using a photonic crystal waveguide arrangement which is (i) specifically structured and sized so as to be placed on an integrated circuit, and (ii) configured to produce the radiation having at least one pulse with a pulse-width of less than approximately 30 picoseconds. | 07-11-2013 |
Patent application number | Description | Published |
20100321633 | PROGRESSIVE 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 |
20110317128 | SPECTACLE EYEGLASS FOR MYOPIC CHILD - A spectacle eyeglass of progressive addition type has been designed for myopic children. To this purpose, an ergorama has been constructed, taking into account vision conditions encountered by the children in their everyday life. In particular, the eyeglass has a limited optical power increase between two reference eye directions (D | 12-29-2011 |
20130329186 | Method for Determining Target Optical Functions - A method for determining target optical functions for a pair of ophthalmic lenses is provided, the method comprising steps of: generating a first target optical function (OFT | 12-12-2013 |
20130335699 | METHOD FOR DETERMINING A PROGRESSIVE OPHTHALMIC LENS - Method for determining a progressive ophthalmic lens wherein:
| 12-19-2013 |
20140016088 | PROGRESSIVE OPHTHALMIC LENS - Disclosed is a progressive ophthalmic lens including a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value and a cylinder value, the front surface of the lens including: —a far vision zone having a far vision reference point; —a near vision zone having a near vision reference point; —a main meridian, wherein the front surface is regressive and has: —a sphere gradient normalized value of less than 7.50·10 | 01-16-2014 |
20140293216 | Method For Determining An Ophthalmic Lens - The invention relates to a method for determining an ophthalmic lens wherein: a first and a second reference axes (Γ1, Γ2) are determined, the first reference axis being set to a value comprised between [ | 10-02-2014 |
20140354944 | Method for Determining a Progressive Opthalmic Lens and a Set of Semi Finished Lens Blanks - A method for determining a progressive ophthalmic lens, comprising determining first, second and third intermediate values of regression as the strongest regression that can be applied on the front surface of the lens while keeping a mean sphere value in at least a portion of the lower part of the rear surface of the lens less or equal to, respectively, first, second and third predetermined values; and determining a value of regression (d) for the front surface as the maximum value among the first, second and third intermediate values of regression. | 12-04-2014 |
20150131056 | Method For Providing A Personalized Spectacle Lens Optical System For A Wearer - A method for providing a personalized optical system for a wearer wherein the optical system characterizes a spectacle ophthalmic lens comprising the following steps: a) providing a visual performance level (VPL) value of at least one eye of the wearer; b) providing a set of rules linking at least the visual performance level of step a) with at least one optical criterion chosen among one or both of the two following optical criteria groups consisting of central vision optical criterion (CVOC) group and peripheral vision optical criterion (PVOC) group; c) calculating the physical and geometrical parameters of the personalized optical system or selecting the personalized optical system in an optical systems data base comprising a plurality of optical systems, so that to meet the set of rules of step b) according to the visual performance level data provided in step a). | 05-14-2015 |
20150309338 | METHOD OF DETERMINING AN OPHTHALMIC LENS - The invention relates to a method of determining an ophthalmic lens for a wearer's eye, the method comprising the following steps: measurement, on the wearer in binocular vision, of the three-dimensional coordinates of the centre of rotation (COR) of the wearer's eye; measurement ( | 10-29-2015 |
Patent application number | Description | Published |
20110202286 | Optical 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 |
20120016644 | METHOD FOR CALCULATING A SYSTEM, FOR EXAMPLE AN OPTICAL SYSTEM - A method for calculating a system by optimization, the method comprising the steps of: i. providing a set of system parameters so as to define a starting system, each system parameter being set up at a starting value; ii. defining a plurality of criteria; iii. associating for each criterion a cost function; iv. defining a plurality of global cost functions by associating to each global cost function at least one cost function; v. defining a vector of variable parameters associated to each global cost function by selecting for each vector of variable parameters at least one system parameter; vi. optimizing the plurality of global cost functions by modifying the values of the system parameters of the vectors of variable parameters so as to obtain an intermediate system; repeating step vi. until an equilibrium is reached so as to obtain a system. | 01-19-2012 |