Patent application number | Description | Published |
20110018087 | PHOTODETECTOR ELEMENT - An element of photodetection of a radiation having a wavelength in vacuum close to a value λ | 01-27-2011 |
20110194804 | INTEGRATED OPTICAL COUPLER - An integrated optical coupler including in the medium separating a first integrated waveguide from a second substantially parallel integrated waveguide, a succession of strips parallel to one another and orthogonal to the general direction of the waveguides, said strips being made of a material having an absorption preventing the propagation of an electromagnetic wave across its volume, and having:
| 08-11-2011 |
20110290982 | OPTICAL FILTER SUITABLE FOR DEALING WITH A RADIATION OF VARIABLE INCIDENCE AND DETECTOR INCLUDING SAID FILTER - An optical filter for filtering an electromagnetic radiation of variable angle of incidence, includes a stack of at least one dielectric or semi-conductor layer arranged between two partially reflective layers, said stack defining a set of Fabry-Pérot cavities set to a predetermined wavelength. The average refractive index of the dielectric or semi-conductor layer is variable in a plane orthogonal to the direction of the stack so as to compensate the effects of the variation in the angle of incidence of the electromagnetic radiation on the transmission spectrum of the cavities. | 12-01-2011 |
20120104258 | INFRARED DETECTOR BASED ON SUSPENDED BOLOMETRIC MICRO-PLATES - A bolometric array detector for detecting electromagnetic radiation in a predetermined range of infrared wavelengths includes a substrate; an array of bolometric micro-plates for detecting the radiation suspended above the substrate by support arms; and metallic reflectors formed on the substrate underneath the micro-plates to reflect that portion of the radiation which has passed through said micro-plates without being absorbed by the latter. For each micro-plate, a corresponding reflector includes a first part located underneath the micro-plate which extends as a second part not positioned underneath the micro-plate. At least the second part has surface texturing in a repeating pattern for coupling a portion of incident radiation on the second part to a guided wave that propagates towards the first part of the reflector positioned underneath micro-plate. | 05-03-2012 |
20120153151 | INFRARED DETECTOR BASED ON SUSPENDED BOLOMETRIC MICRO-PLATES - This bolometric array detector for detecting electromagnetic radiation in a predetermined range of infrared or terahertz wavelengths comprises a substrate and an array of bolometric micro-plates for detecting said radiation that are suspended above the substrate by support arms. It comprises a metallic membrane located above and around each micro-plate and in which openings are formed; said openings in metallic membrane are periodically located in it along at least one predetermined axis with a period equal to or less than | 06-21-2012 |
20130161775 | PHOTODETECTOR AND CORRESPONDING DETECTION MATRIX - The invention relates to a photodetector intended for the detection of incident light radiation in the visible and close infrared region, said photodetector comprising: a light-radiation-absorption structure ( | 06-27-2013 |
20140049812 | SPECTRAL FILTERING DEVICE IN THE VISIBLE AND INFRARED RANGES - Spectral filtering device comprising:
| 02-20-2014 |
20140264712 | INFRARED DETECTOR MADE UP OF SUSPENDED BOLOMETRIC MICRO-PLATES - An array bolometric detector for detecting an electromagnetic radiation in a predetermined infrared or terahertz wavelength range, including a substrate, and an array of bolometric microplates for the detection of the radiation, suspended above the substrate by support elements. The detector includes a membrane arranged above each microplate, and having patterns having a refractive index smaller than that of the membrane formed therein. The patterns are placed periodically along at least one axis of the membrane, according to a period shorter than or equal to | 09-18-2014 |
20140374574 | FORMING OF A NANOSTRUCTURED SPECTRAL FILTER - A spectral filter includes an assembly of filtering cells. Each cell has a same nanostructured pattern and a preferential direction of the pattern. This preferential direction is, for each cell, oriented approximately radially with respect to a single point of the spectral filter. Alternatively, this preferential direction is, for each cell, oriented approximately ortho-radially with respect to the single point of the spectral filter. The single point may be a center point. Alternatively, the single point may correspond to an optical axis of a lens element associated with the spectral filter. | 12-25-2014 |
20150053924 | SPAD PHOTODIODE OF HIGH QUANTUM EFFICIENCY - A SPAD-type photodiode has a semiconductor substrate with a light-receiving surface. A lattice formed of interlaced strips made of a first material covers the light receiving surface. The lattice includes lattice openings with lateral walls covered by a spacer made of a second material. Then first and second materials have different optical indices, and further each optical index is less than or equal to the substrate optical index. A pitch of the lattice is of the order of a magnitude of an operating wavelength of the photodiode. The first and second materials are transparent at that operating wavelength. The lattice is made of a conductive material electrically coupled to an electrical connection node (for example, a bias voltage node). | 02-26-2015 |
20150054042 | PHOTODIODE OF HIGH QUANTUM EFFICIENCY - A photodiode includes at least one central pad arranged on a light-receiving surface of a photodiode semiconductor substrate. The pad is made of a first material and includes lateral sidewalls surrounded by a spacer made of a second material having a different optical index than the first material. The lateral dimensions of the pad are smaller than an operating wavelength of the photodiode. Both the first and second materials are transparent to that operating wavelength. The pads and spacers are formed at a same time gate electrodes and sidewall spacers of MOS transistors are formed. | 02-26-2015 |