Abstract: The invention relates to a display device (100) comprising: —a display (150); —a curved and at least partially transparent plate (170); and —a structural part (180) comprising a frame (181) which at least partially frames the display and one end face (182) of which forms a bearing surface onto which said plate is applied. According to the invention, the bearing surface is curved according to a mathematical function which has a hyperbolic cosine term.

Abstract: One subject of the invention is a light guide (13), for an interface module, in particular for a vehicle passenger compartment, for emitting or receiving a light beam in a cone that is elongate in a transverse direction and that is centred on a plane that is inclined by an angle ? with respect to an optical axis (z) of the light guide, taking the form of a prism made of transparent material of index nGL, characterised in that it comprises: •an interior dioptric interface intended to face a printed circuit board (7) bearing a light source (5) or a light detector, forming a convergent lens the focal point of which is located at an expected position of the light source (5) or of the light detector, •a first planar face (15) that is oriented parallel to the optical axis (z) of the light guide, and •a second planar face (17) that is inclined with respect to the first face (15) by an angle ? respecting cos(?+?)=(1??) nGL*cos 3?, with ? a number comprised between ?0.1 and 0.1.

Abstract: The invention relates to a display device (1) comprising: - a cover glass (10); - a back-lighting device (20), which is designed to generate a source light beam; - a modulator (12), which is securely fastened to the cover glass and located between said cover glass and the back-lighting device so as to receive the source light beam and to transmit a modulated light beam through the cover glass; and - at least one mechanical actuator (30); according to the invention, said mechanical actuator is placed so as to be able to move the cover glass with respect to the back-lighting device.

Abstract: A display unit (2) comprises a display (8), a plate (4) which is at least partially transparent and a structural part (6) comprising a rear portion (10) and a front portion (12) extending toward the plate (4) from the rear portion (10) while surrounding the display (8). The front portion (12) has a front face (30) extending at a constant distance from a rear face (32) of the plate (4) so as to form a bearing surface for the plate (4). The front portion (12) has at least one recess (28) arranged to form a passage between the rear portion (10) and the plate (4).

Abstract: One subject of the invention is a light guide (13), for an interface module, in particular for a vehicle passenger compartment, for emitting or receiving a light beam in a cone that is elongate in a transverse direction and that is centred on a plane that is inclined by an angle ? with respect to an optical axis (z) of the light guide, taking the form of a prism made of transparent material of index nGL, characterised in that it comprises: •an interior dioptric interface intended to face a printed circuit board (7) bearing a light source (5) or a light detector, forming a convergent lens the focal point of which is located at an expected position of the light source (5) or of the light detector, •a first planar face (15) that is oriented parallel to the optical axis (z) of the light guide, and •a second planar face (17) that is inclined with respect to the first face (15) by an angle ? respecting cos(?+?)=(1??)nGL*cos 3?, with ? a number comprised between ?0.1 and 0.1.

Abstract: The invention relates to an image-generation device (11) for a head-up display (10), comprising: a light source, a light modulator suitable for spatially modulating the light emitted by the light source, and a computer (13) suitable for controlling the light of source and the light modulator such that they generate an image. According to the invention, the light source is composed of a plurality of separate light elements, and the computer is able to modulate the light intensity emitted by each light element independently of the light intensity emitted by the other light elements.

Abstract: The invention relates to a head-up display (10) for a motor vehicle, comprising: —a computer (20), —an imaging unit (11) controlled by the computer so as to generate images, and—an optical unit (12) for projecting virtual images (Img), designed to project every image generated by the imaging unit in the field of vision of the motor vehicle driver. According to the invention, the imaging unit comprises an autostereoscopic filter (16).

Abstract: The invention relates to an image-generation device (11) for a head-up display (10), comprising: a light source, a light modulator suitable for spatially modulating the light emitted by the light source, and a computer (13) suitable for controlling the light of source and the light modulator such that they generate an image. According to the invention, the light source is composed of a plurality of separate light elements, and the computer is able to modulate the light intensity emitted by each light element independently of the light intensity emitted by the other light elements.

Abstract: A compact head-up display for a vehicle includes: an image generator that displays an image on a display surface, and a semi-reflecting optical element, arranged at a distance from the image generator, that forms, on a first side of the optical element, a virtual image. The virtual image is visible from a viewing window on a second side of the optical element. The display includes an optical component that lengthens the optical path of the image passing from the image generator to the optical element. The optical component includes one entry face and one exit face, and a first reflecting face and a second reflecting face. The first reflecting face reflects the image from the entry face toward the second reflecting face. The second reflecting face reflects the image from the first reflecting face toward the exit face. The entry face is in contact with the display surface.

Abstract: The invention relates to a method for controlling an image-generation device (11) of a head-up display (10) for a motor vehicle, comprising: a step of acquiring data relating to the operation and/or the environment of the motor vehicle, and a step of controlling the display, via the image-generation device, of at least two driving-assistance information items, based upon the acquired data. According to the invention, during the control step, the light intensity of at least one information item is time-modulated with respect to the light intensity of the other information item. The invention also relates to a head-up display comprising a computer capable of performing the above-mentioned method.

Abstract: The invention relates to a projection system for a display, in particular a heads-up display, comprising a liquid crystal screen (12) and a back-lighting device (14) for said screen (12). The projection system is characterized in that said back-lighting device (14) comprises at least one light source (16) emitting light towards the screen (12), at least one lens (38a, 38b) suitable for collimating the light from the light source (16) towards the liquid-crystal screen (12), and reflective means (26) arranged on the surface of the lens (38a, 38b) located on the side of the light source (16), arranged such as to allow light to pass through same towards the screen (12) and to reflect towards the screen (12) almost all of the light propagating towards the lens (38a, 38b).

Abstract: A device for emitting a light beam intended to form an image includes a plurality of sources, each emitting a beam of the laser type. The device is configured to form the light beam by combining the laser beams, and includes attenuation means, situated downstream of the plurality of sources, making it possible to vary the optical power of the light beam. The attenuation means includes one or more retractable filters, and is able to be interposed in the laser beams.

Abstract: The invention relates to a system for controlling the luminosity of a head-up display (36) of a vehicle, said display (36) being configured to display an image, said system comprising means (32) for assessing luminosity connected to means (34) for determining a luminosity instruction for the display (36). The system is characterized in that said means (32) for assessing luminosity are capable of assessing the external luminosity towards the front of the vehicle and beyond the image displayed on said display (36), and in that said determination means (34) are capable of determining the luminosity instruction in accordance with the external luminosity assessed and of transmitting same to the display (36).

Abstract: A device for emitting a light beam intended to form an image including one or more sources, each emitting a beam of the laser type, and an attenuation means situated downstream of the source or sources that allows the varying of the optical power of the light beam by transmitting or reflecting the beam or beams as a function of a supply current of the attenuation means. The device forms the light beam from the one laser beam or from the bringing together of the laser beams by combination.

Abstract: The invention relates to a device (1) for detecting the position of the face (2) of a person, in particular of a motor vehicle driver, wherein said device includes: a thermal sensor (4) configured for determining the heat generated from a target area (6) likely to be occupied by a person, in the form of a dot (10) matrix (8), each dot (10) in said matrix (8) representing the heat generated by a portion of said target area (6), processing means for analyzing a value acquired through a physical quantity for the dots (10) of said matrix (8) in order to detect at least one piece of adjustment information (12) that is representative of the position of said face (2) within said target area (6). The invention also relates to a corresponding detection method and display, in particular a head-up display, provided with said device.

Abstract: The invention concerns a device for emitting a light beam (10) intended to form an image, the device comprising one or more sources (4, 5, 6), each emitting a laser-type beam (7, 8, 9), the device being configured to form the light beam (10) from the one laser beam or from the combination of laser beams (7, 8, 9), the device comprising attenuation means (12) disposed downstream of the source(s) (3, 4, 5), enabling the optical power of the light beam (10) to be varied.

Abstract: The invention relates to a compact head-up display (1), in particular for a motor vehicle, comprising: an image generator (9) for displaying an image (7) on a display surface (2); a semi-reflective optical element (3), typically a windscreen, arranged at a distance from the image generator (9) so as to form a virtual image (4) of the image (7) from the image generator (9) on a first side of the optical element (3), said virtual image (4) being visible from a view window (5) located on a second side of the optical element (3). The compact head-up display (1) comprises an optical part (10), typically a pentaprism, for extending the optical path of the image (7) passing therethrough from the image generator (9) to the optical element (3), said optical part (10) comprising an image input face (14) and an image output face (17), as well as first (15) and second (16) reflective surfaces.

Abstract: A method of projecting an image includes emitting a light beam, forming an image from the light beam, and attenuating the light beam by controlling an AC signal between two voltage levels. The image is formed by projecting image frames. The switching of the AC signal from one voltage level to the other is controlled between projections of the image frames.

Abstract: The invention relates to a heads-up display (1) comprising —an image generator (3), —a semi-reflecting display area (7) receiving light beams from said image generator (3), —characterized in that the semi-reflecting area (7) comprises at least one opaque portion or can be rendered opaque.

Abstract: The invention relates to a projection system for a display, in particular a heads-up display, comprising a liquid crystal screen (12) and a back-lighting device (14) for said screen (12). The projection system is characterised in that said back-lighting device (14) comprises at least one light source (16) emitting light towards the screen (12), at least one lens (38a, 38b) suitable for collimating the light from the light source (16) towards the liquid-crystal screen (12), and reflective means (26) arranged on the surface of the lens (38a, 38b) located on the side of the light source (16), arranged such as to allow light to pass through same towards the screen (12) and to reflect towards the screen (12) almost all of the light propagating towards the lens (38a, 38b).