Patent application number | Description | Published |
20080204754 | Device For Reconfigurable Processing Optical Beams - A device for optical processing of at least one main optical beam, including an optical transforming module contributing towards optical transformation of the main optical beam input in the processing device, formed of a plurality of discrete elements in one plane. An upstream spatial configuration module upstream of the optical transforming mode includes an optical pathway through which the main optical beam travels, this pathway includes one or more mobile optical deflection elements causing the main optical beam to take up potential spatial positions in the plane of the optical transforming module, these potential spatial positions coinciding with those of the discrete elements, the optical transforming module being static. Such a device may find application to telecommunications, chemistry, or biology. | 08-28-2008 |
20080226226 | Simplified Optical Switch - An optical switch to be mounted between first optical lines, each including one or more optical channels having a rank within their optical line, and second optical lines, each including one or more optical channels having a rank within their optical line. The switch includes a selection device with at least one selection element configured to select a single optical channel from a set of at least two optical channels of the first optical lines or the second optical lines, the optical channels of this set having the same rank, and a connection device configured to couple the selected optical channel to one of the channels of the second optical lines or the first optical lines respectively. Such a switch may find application to optical telecommunications. | 09-18-2008 |
20080292785 | Formation of deep pit areas and use thereof in fabrication of an optic recording medium - 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. | 11-27-2008 |
20090080317 | DEVICES FOR STORING AND READING DATA ON A HOLOGRAPHIC STORAGE MEDIUM - In one embodiment, the invention provides a device for storing data on a holographic storage medium, comprising means for generating an object beam encoded by spatial modulation with the data to be stored, and means for generating a reference beam spatially modulated according to predetermined configurations to produce a multiplexing of the data, comprising an optical storage medium on which is implemented a succession of diffractive optical elements, each introducing a distinct modulation configuration of the reference beam. The invention further provides a device for reading the duly-stored data, using an optical storage medium of the same type for generating and spatially modulating a read beam, and a device for replicating a first holographic storage medium on a second holographic medium, comprising such a reading device coupled to such a storage device. | 03-26-2009 |
20090142028 | Method For Making Elements Comprising Optical Fibers, Device For Implementing Said Method, Fiber Optic Element and Optical Device Comprising Same - Method for producing optical fibers elements disposed in defined positions, comprising the following steps, among others:
| 06-04-2009 |
20090243155 | METHOD OF STORING IMAGES AND CORRESPONDING STORAGE MEDIUM - The invention relates to a method of storing images on a medium able to be etched on the basis of a writing procedure using a laser beam, in which a substrate, preferably flexible, comprises a multiplicity of expanses of lateral dimensions less than 10 millimetres, each reserved for an image, and an expanse reserved for an image comprises as many elementary zones as there are image pixels to be stored, the image stored in an expanse being able to be read by optical magnification means. Each elementary zone comprises an engraved pattern whose diameter represents one respective grey level out of n possible levels. | 10-01-2009 |
20100018955 | DEVICE FOR RECORDING GRAPHICAL DATA ON A MEDIUM - This is a device for recording graphical data ( | 01-28-2010 |
20100209857 | Lithography Process for the Continuous Direct Writing of an Image - The invention relates to photolithography techniques and more particularly to maskless photolithography techniques in which a feature is written directly onto a substrate by means of a high-energy beam, typically a laser beam. | 08-19-2010 |
20110062606 | METHOD FOR PRODUCING ELEMENTS COMPRISING FIBER OPTICS, DEVICE FOR IMPLEMENTING SAID METHOD, OPTICAL FIBERS ELEMENT AND OPTICAL ARRANGEMENT COMPRISING SUCH AN ELEMENT - A method for producing an optical fiber element provided with several optical fibers disposed in a matrix, including: a) placing and maintaining the several optical fibers in grooves formed in a mould plate, said grooves being in different planes, b) injecting a hardenable material adhering to the several optical fibers, c) solidifying the hardenable material to maintain the several optical fibers in a position set by the grooves, and d) removing at least the mould plate. | 03-17-2011 |
20120120465 | DEVICE AND METHOD OF MARKING A SET OF PRODUCTS - The invention relates to a method of marking a batch of products, consisting in forming a synthetic hologram of an image ( | 05-17-2012 |
20120262768 | STACKING A VISIBLE IMAGE AND A SYNTHETIC HOLOGRAM - The invention relates to a synthetic hologram consisting of an array of encoding cells, including a pattern in which the cells are inverted and have a phase modified by an offset value relative to the rest of the hologram. | 10-18-2012 |
20130082192 | LITHOGRAPHY METHOD AND DEVICE - An installation and method for etching at least one wafer coated with an etch-ready, blank photosensitive layer is disclosed. In accordance with an embodiment, the wafer has thickness irregularities, wherein the wafer is arranged to be able to be submitted to irradiation-beam scanning, a sheet transparent to the radiation to which the photosensitive layer is sensitive covers the wafer, and a probe beam intended to reflect on the upper portion of the sheet perpendicularly to the irradiation beam spot on the photosensitive layer is provided. | 04-04-2013 |
20130135702 | METHOD FOR INTEGRATING A SYNTHETIC HOLOGRAM IN A HALFTONE IMAGE - A method for integrating a synthetic hologram in an image of a scene, including: forming, from a first image of the scene, a first matrix including pixels of two shades according to the gray level of the corresponding pixel of the first image, and a second matrix, image of the gray level difference between the corresponding pixels of the first image and of the first matrix; forming a third matrix based on a second image; forming a fourth matrix having each pixel including a central area with a surface area determined by the corresponding element of the second matrix and off-centered in the pixel according to the corresponding pixel of the third matrix; and performing a lithography of an opaque layer at the surface of a plate according to the pattern defined by the fourth pixel matrix. | 05-30-2013 |
20130301091 | Encrypted synthetic hologram and method for reading such a hologram - The invention relates to an encrypted synthetic hologram formed from the Fourier transformation of an image ( | 11-14-2013 |
20130322680 | Method for concealing a synthetic hologram in a binary image - The invention relates to a synthetic hologram ( | 12-05-2013 |
20130342884 | Synthetic hologram reading device and method - The present invention involves a device for reading the source image of a synthetic hologram constituting the Fourier transform of the source image formed on a support ( | 12-26-2013 |
20150062885 | LIGHT-EMITTING DEVICE WITH DIFFRACTIVE STRUCTURES AND A SYNTHETIC HOLOGRAM - A light-emitting device comprising at least:
| 03-05-2015 |