Abstract:
The invention concerns a method of manufacturing a lens (1, 2) that has a front face and a rear face, and into which light beams emitted by an optical element of a light beam generator system (IB) are introduced via an entry surface (Si) and directed towards the eye of the wearer to enable information content to be viewed, by means of a transparent optical insert (IA, 2A, I) constituted by a light guide, said insert (I) being with a form substantially identical to the form of a final lens suitable for being positioned in a frame (3) of a support. According to the invention, the method comprises the following steps: manufacturing said insert (I) with a form smaller than the form of said final lens according to a proportional transformation, manufacturing a lens blank (LB) by association of plastic material forming said front face and said rear face with said insert (I) and cutting said lens blank (LB) around said insert (I) and with a distance from the edges of said insert which is around 1 mm for at least 50% of the periphery of said insert.
Abstract:
The present invention relates to a display device for stereoscopic display, comprising a binocular display system, an informative content and a display source. The display device is noteworthy in that it further includes electronic components for implementing optimization software for optimizing the binocular display system, the informative content and the display source, said optimization software forming together a loop for managing various parameters. The wearer of said device may thus display the informative content by means of the binocular display system under conditions that are the most adapted to his physiology.
Abstract:
The invention concerns a method of manufacturing a lens (1, 2) that has a front face and a rear face, and into which light beams emitted by an optical element of a light beam generator system (IB) are introduced via an entry surface (Si) and directed towards the eye of the wearer to enable information content to be viewed, by means of a transparent optical insert (IA, 2A, I) constituted by a light guide, said insert (I) being with a form substantially identical to the form of a final lens suitable for being positioned in a frame (3) of a support. According to the invention, the method comprises the following steps: manufacturing said insert (I) with a form smaller than the form of said final lens according to a proportional transformation, manufacturing a lens blank (LB) by association of plastic material forming said front face and said rear face with said insert (I) and cutting said lens blank (LB) around said insert (I) and with a distance from the edges of said insert which is around 1 mm for at least 50% of the periphery of said insert.
Abstract:
A method of fabricating a light duct includes making the light duct as a single piece by injection molding a thermoplastic material in a mold (1) presenting a cavity of shape identical to that of the duct, the injection taking place through a feed orifice disposed on one side of said cavity over a face that is substantially parallel to the plane defined by axes (A-A′, B-B′), the feed orifice presenting a height h lying in the range 0.2 Hmax and Hmax, and a length l lying in the range 0.2 Lmoy and 0.8 Lmoy, the thermoplastic material being injected at a rate lying in the range 400 mm3/s to 1500 mm3/s.
Abstract:
La présente invention concerne un dispositif d'affichage pour la visualisation stéréoscopique comprenant un système binoculaire de visualisation, un contenu informatif, et une source d'affichage.Le dispositif d'affichage est remarquable en ce qu'il comprend en outre des composants électroniques pour la mise en oeuvre de logiciels d'optimisation du système binoculaire de visualisation, du contenu informatif, et de la source d'affichage, lesdits logiciels d'optimisation formant ensemble une boucle de gestion de différents paramètres.Le porteur dudit dispositif peut ainsi visualiser le contenu informatif par l'intermédiaire du système binoculaire de visualisation dans des conditions les plus adaptées à sa physiologie.
Abstract:
L'invention concerne un conduit optique destiné à transmettre des signaux de lumière d'une de ses extrémités dite surface d'entrée (1A) à son autre extrémité dite surface de sortie (1B) vers l'oeil (3) d'un utilisateur pour la vision d'une image virtuelle, conduit comportant un composant diffractif conformé directement sur la surface d'entrée (1A), ce composant diffractif étant un élément répondant à l'équation d'un composant asphérique de révolution, de type « kinoform », conduit caractérisé en ce que ce composant diffractif est d'une puissance située dans un domaine D(Seuil,X) défini par :D(Seuil,X) = DOPTDIF(Seuil) INTERSECTION DXT(X),où le domaine DTXT(X) correspond à la plage de valeurs de la puissance diffractive (DeltaP) du dit composant pour laquelle la valeur du chromatisme transverse global est inférieur à un seuil de chromatisme transverse admissible X etDOPTDIF(Seuil) est un domaine de puissance déterminé en fonction d'une efficacité de diffraction dite Seuil correspondante à une valeur admissible de 1/Rk pour un outillage de fabrication donné, Rk étant le ratio entre la valeur pic de l'intensité de l'image ponctuelle de l'ordre de diffraction considéré k, et la valeur pic de l'intensité de l'image ponctuelle de l'ordre de diffraction de conception.
Abstract:
A method of fabricating a light duct includes making the light duct as a single piece by injection molding a thermoplastic material in a mold (1) presenting a cavity of shape identical to that of the duct, the injection taking place through a feed orifice disposed on one side of said cavity over a face that is substantially parallel to the plane defined by axes (A-A′, B-B′), the feed orifice presenting a height h lying in the range 0.2 Hmax and Hmax, and a length l lying in the range 0.2 Lmoy and 0.8 Lmoy, the thermoplastic material being injected at a rate lying in the range 400 mm3/s to 1500 mm3/s.
Abstract:
The invention relates to a binocular device for displaying information, the device comprising a support for placing on the nose and supporting a right display element and a left display element each designed to be placed in front of an eye and each comprising a light guide for receiving a beam of light rays emitted by a beam generator device towards an inlet face and for propagating the beam to an outlet face where the beam is directed towards the corresponding eye, the binocular device having an arrangement for adjusting the pupillary distance by moving at least one of the light guides relative to said support so as to adjust the distance between the light guides. According to the invention, said light guides are disposed over a said support and are held by a strip disposed over the light guides and secured to said support by means of at least one spacer, at least one slack takeup means being interposed between said strip and said light guides.