Patent application number | Description | Published |
20100020335 | METHOD FOR DETECTING THE SPACE ORIENTATION AND POSITION OF AN OBJECT - The invention relates to a method for the optical detection of the position and orientation of an object by means of an optical device comprising at least one parallelogram fastened to said object, the optical device comprising optical means and electronic analysis means making it possible to determine the coordinates of the four vertices of the parallelogram A′B′C′D′, in an orthonormal frame with center | 01-28-2010 |
20100079830 | DEVICE FOR OPTICALLY DETECTING POSITION AND/OR ORIENTATION OF OBJECTS AND ASSOCIATED DETECTION METHODS - The present invention relates to a device for optically detecting position and/or attitude of an object ( | 04-01-2010 |
20100085581 | Optical scanning-based system for detecting position and/or orientation of objects - The optical device for determining position and orientation of an object comprising a fixed part comprises a laser beam projector with sequential scan and a projection centre (O), defining the centre of a reference frame (R) in space. | 04-08-2010 |
20100098325 | System for optically detecting position and/or orientation of objects comprising at least two coplanar sensors - The electro-optical system for determining position and orientation of a mobile part comprises a fixed projector having a centre of projection (O) and a mobile part. The projector is rigidly linked with a virtual image plane, and the mobile part is rigidly linked with two linear sensors defining a first and a second direction vector. The fixed part projects onto the image plane and onto the sensors patterns, not represented, forming at least two secant networks of at least three segments that are each parallel. | 04-22-2010 |
20100189309 | Device for optically detecting position and/or orientation of objects comprising at least one linear sensor - The electro-optical system for determining the attitude of a mobile part comprises a fixed part and a mobile part, the fixed part being linked rigidly with at least one virtual image plane. | 07-29-2010 |
20100277583 | Optical Method and Device for Detecting the Movements of a Solid in Space - The optical method for detecting the orientation of an object in space, the object comprising a triple of notable and aligned points tied to the said object, whose relative positions are known, the three points defining a first straight line in space, optical detection means making it possible to determine the relative positions in its image plane of the projections of notable points in space, a computer making it possible, by means of the relative positions of the projections in the image plane of the three notable points, and of an identifiable characteristic of an extremal one of the points of the triples of points, to determine a direction vector of the straight line and of its orientation. | 11-04-2010 |
20110255057 | Multi-Projector Servo-Controlled Display System - A display system includes at least two devices for projecting images and a single screen, each projection device including an image source and projection optics arranged so as to project the image delivered by the image source onto a display region of the screen so that the various images projected from various image sources form a single image without obvious discontinuities, said display system having a device for monitoring and servo-controlling the alignment of the various images. The monitoring and servo-control device is such that the image delivered by each image source includes at least one detection pattern so that the projected image of said detection pattern meets the screen in a detection region located outside of the image display region, the screen having a plurality of light sensing elements, each light sensing element being associated with a projection device and placed so that the projected image of a detection pattern delivered by said projection device forms on its light-sensitive surface, the sensing element being arranged so as to determine the position and/or the orientation of said detection pattern and its photometric properties. | 10-20-2011 |
20120236321 | OPTICAL REFLECTOR HAVING SEMI-REFLECTIVE BLADES FOR A POSITION DETECTION DEVICE FOR A HELMET, AND HELMET COMPRISING SUCH A DEVICE - The general field of the invention is that of optical position/orientation devices for a helmet and more particularly those whose helmet comprises neither emitters, nor receivers but solely passive optical components, detection of which is ensured by fixed opto-electronic means outside the helmet. The optical component for the optical device for detecting position/orientation of a helmet according to the invention comprises a particular “optical cube corner”. It comprises a prism in the form of a trirectangular trihedron, each of the three plane surfaces of the trihedron comprising a blade with plane and mutually parallel faces, the first face being coincident with the plane surface on which it rests, the interface between this first face and said surface comprising a semi-reflecting treatment. | 09-20-2012 |
20130033709 | INTERFEROMETRIC POSTURE DETECTION SYSTEM - The general field of the invention is that of optical systems for detection of the orientation of mobile objects in space. The main application is helmet posture detection inside of an aircraft cockpit. The system according to the invention operates by interferometry. It comprises a fixed electro-optical device comprising one or more collimated point-like emission sources and a detection assembly comprising one or more point-like photosensitive detectors. Two or more retro-reflecting devices referred to as “cube corner” are disposed on the mobile object. This system can be completed by optical means operating in polarized light mode allowing the direction of variation of the interference fringes to be determined and by other optical devices allowing an initial orientation to be measured. | 02-07-2013 |
20130033711 | OPTICAL SYSTEM FOR MEASURING THE ORIENTATION OF A HELMET USING CORNER CUBES AND A TELECENTRIC EMISSION LENS - The overall field of the invention is that of systems for detecting the posture of a moving object in space. The device according to the invention comprises:
| 02-07-2013 |
20130057852 | OPTICAL SYSTEM FOR MEASURING ORIENTATION WITH CUBIC WEDGE AND MASK - The field of the invention is that of optical systems for detecting the posture of a mobile object in space. The system comprises an electro-optical fixed device of known orientation comprising a first point emission source, a telecentric emission/reception optic and a photosensitive matrix sensor. An assembly comprising an optical cubic wedge is disposed on the mobile object. The input face of the cubic wedge comprises a mask in the shape of a parallelogram, each side of the parallelogram comprising a geometric marking making it possible to identify it, the image of the mask projected on the photosensitive matrix sensor, by reflection on the faces of the cubic wedge, being the intersection of the projection of the mask and of the projection of its image inverted with respect to the centre of the cubic wedge. Analysis of this image makes it possible to determine the orientation of the cubic wedge. | 03-07-2013 |
20140016138 | OPTICAL SYSTEM FOR MEASURING ORIENTATION AND POSITION WITHOUT IMAGE FORMATION WITH POINT SOURCE AND MASK - The general field of the invention is that of systems for the optical detection of the orientation and the position of a mobile object in space. The system comprises a fixed electro-optical device comprising a transmission point source, image analysis means and an optical cube corner disposed on the mobile object. The input surface of the cube corner comprises a polygonal-shaped mask, the sides of which comprise a geometric marking to identify them. The fixed electro-optical device comprises photosensitive means close to the point source and disposed in two different recording planes and recording two luminous shapes in perspective of the mask obtained by reflection on the surfaces of the cube corner. The image analysis means comprise means for determining the vanishing points of the two luminous shapes in the two recording planes, the knowledge of the four vanishing points enabling the determination of the position and orientation of the optical cube corner in relation to the fixed electro-optical device. | 01-16-2014 |
20140191769 | MULTITOUCH TACTILE DEVICE WITH MULTI FREQUENCY AND BARYCENTRIC CAPACITIVE DETECTION - The general field of the invention is that of touchscreen devices with projected capacitive detection comprising a matrix touchpad comprising a plurality of conducting rows and of conducting columns, the said pad being linked to electronic control means. The electronic control means generate two periodic emission voltages emitted at two different frequencies. The analysis of the reception voltages makes it possible to determine the positions of two simultaneous presses on the touchpad, including when the two presses are done on rows or columns that are close. The determination of the presses is performed essentially by calculating the barycentres of the troughs of the reception voltages. | 07-10-2014 |
20140320640 | OPTICAL SYSTEM FOR MEASURING ORIENTATION AND POSITION COMPRISING A POINT SOURCE AND CORNER CUBES WITH A POLYCHROMATIC ENTRY FACE - The general field of the invention is that of systems for optically detecting the posture of an object which is mobile in space. The system according to the invention comprises an optical assembly comprising a plurality of optical corner cubes arranged on the mobile object. The entry face of the corner cubes is divided into three separate coloured regions having a spectral transmission filter transmitting only a predetermined spectral band different from those of the other filters, each side of the said coloured regions has a specific marking making it possible to identify this said side, and the spectrum of the emission source has a spectral width equal to the sum of the spectral bands of the said filters. The associated fixed electro-optical device of known orientation comprises at least one colour matrix sensor and the image analysis means comprise means for determining shapes and geometrical characteristics in the images received by the colour matrix sensor or sensors. | 10-30-2014 |
20140362386 | OPTICAL SYSTEM FOR MEASUREMENT OF ORIENTATION AND POSITION COMPRISING A POINT SOURCE, CENTRAL MASK, PHOTOSENSITIVE MATRIX SENSOR AND CORNER CUBE - The general field of the invention is that of systems for detecting the posture of a mobile object. The systems according to the invention comprise a fixed electro-optical device comprising an emission source and a photosensitive sensor. The optical corner cube is arranged on the mobile object. The entry face of the corner cube has a predetermined geometry, the light coming from the source and reflected back by the corner cube forming a luminous contour on the matrix sensor. The fixed electro-optical device comprises an optical element with a known shape and location, which is placed in the vicinity of the said source and is arranged so as to form a dark zone in the central part of the luminous contour. The detection system comprises analysis means determining the position and the orientation of the mobile object from knowledge of the vanishing points of the luminous contour and the position and shape of the dark zone. | 12-11-2014 |
20150073696 | METHOD FOR SYNTHETIC THREE-DIMENSIONAL CONFORMAL REPRESENTATION OF TERRAIN CARTOGRAPHY AS A FUNCTION OF VISIBILITY - The general field of the invention is that of methods for three-dimensional conformal representation of a terrain. The method is used in a piloting and navigation assistance system of an aircraft. The assistance system comprises a navigation system, a cartographic database, electronic calculation means (CE) a meteorological database and a display system allowing the superimposition of synthetic images on the exterior. The method comprises the following steps: Step 1: Calculation, for a determined position of the vehicle, of the terrain perceptible through the display system; Step 2: Selection of a part of the said terrain as a function of a distance or of an altitude or of a range of altitudes; Step 3: Calculation of a three-dimensional conformal cartographic representation of the said selected part of the terrain; and Step 4: Display of the said cartographic representation by the display system. | 03-12-2015 |