Abstract: A system for injecting light, includes an optical coupler having: a lens having a convex entrance face of radial extent R1, a convex central exit face and a peripheral exit face; a cavity, containing the entrance face and with an entrance lateral surface; and a peripheral reflective surface, encircling the lens and the cavity, extending beyond the entrance face; an optical collector, with an entrance, a collecting surface facing the central exit face, and a numerical aperture NA smaller than 1, the collector including a jacket having an end surface; and a member for aligning the optical collector, the optical coupler and the aligning member being integrally formed or being indirectly or directly fastened together, the central distance eF on the axis Oz between the collecting surface and the central exit face being nonzero and smaller than 5 mm, and the system including a stop for the end surface.

Abstract: A system for injecting light, includes an optical coupler having: a lens having a convex entrance face of radial extent R1, a convex central exit face and a peripheral exit face; a cavity, containing the entrance face and with an entrance lateral surface; and a peripheral reflective surface, encircling the lens and the cavity, extending beyond the entrance face; an optical collector, with an entrance, a collecting surface facing the central exit face, and a numerical aperture NA smaller than 1, the collector including a jacket having an end surface; and a member for aligning the optical collector, the optical coupler and the aligning member being integrally formed or being indirectly or directly fastened together, the central distance eF on the axis Oz between the collecting surface and the central exit face being nonzero and smaller than 5 mm, and the system including a stop for the end surface.

Abstract: A luminous glazing unit includes a glass substrate, an additional element that is tinted an optical isolator between the glass substrate and the additional element, a light source, optically coupled to the glass substrate, and a light-extracting device associated with the glass substrate. The optical isolator includes a low-index film, made of fluoropolymer-based material which: has a refractive index n2 at 550 nm such that n1-n2 is at least 0.08, has a thickness e2 of at least 600 nm, is in optical contact with the first main face by a first lamination interlayer, based on a thermoplastic material.

Abstract: A luminous glazing unit includes a glass substrate, an additional element that is tinted an optical isolator between the glass substrate and the additional element, a light source, optically coupled to the glass substrate, and a light-extracting device associated with the glass substrate. The optical isolator includes a low-index film, made of fluoropolymer-based material which: has a refractive index n2 at 550 nm such that n1-n2 is at least 0.08, has a thickness e2 of at least 600 nm, is in optical contact with the first main face by a first lamination interlayer, based on a thermoplastic material.

Abstract: The invention relates to an illuminating web, characterized in that it is flame-retarded by a flame-retardant composition impregnated into the bulk of the illuminating web and/or included in a coating on at least one face of the illuminating web. The illuminating web exhibits an improved performance in terms of reaction toward fire. It is better suited to the standards in force as regards reaction to fire. It also exhibits an advantageous illuminating performance and has good acoustic properties, when it incorporates a support appropriate for sound insulation. The invention also relates to an illuminating structure composed of said web added to a rigid or semirigid support. This structure can be used in particular as partition wall or ceiling in a building. With regard to the web proper, it can be used as painter's canvas or stretched fabric or part of these.

Abstract: A system for injecting light, includes an optical coupler having: a lens having a convex entrance face of radial extent R1, a convex central exit face and a peripheral exit face; a cavity, containing the entrance face and with an entrance lateral surface; and a peripheral reflective surface, encircling the lens and the cavity, extending beyond the entrance face; an optical collector, with an entrance, a collecting surface facing the central exit face, and a numerical aperture NA smaller than 1, the collector including a jacket having an end surface; and a member for aligning the optical collector, the optical coupler and the aligning member being integrally formed or being indirectly or directly fastened together, the central distance eF on the axis Oz between the collecting surface and the central exit face being nonzero and smaller than 5 mm, and the system including a stop for the end surface.

Abstract: A luminous panel includes at least two juxtaposed OLED devices that form a front face of the luminous panel and define two light-emitting zones separated by an intermediate zone, and a luminous joint forming mechanism that ensures, when the two OLED devices are in an on state, visual continuity between the intermediate zone and the two emitting zones, the luminous joint forming mechanism being located at a back of or flush with the front face of the panel.

Abstract: A luminous panel includes at least two juxtaposed OLED devices that form a front face of the luminous panel and define two light-emitting zones separated by an intermediate zone, and a luminous joint forming mechanism that ensures, when the two OLED devices are in an on state, visual continuity between the intermediate zone and the two emitting zones, the luminous joint forming mechanism being located at a back of or flush with the front face of the panel.

Abstract: The invention relates to an illuminating web, characterized in that it is flame-retarded by a flame-retardant composition impregnated into the bulk of the illuminating web and/or included in a coating on at least one face of the illuminating web. The illuminating web exhibits an improved performance in terms of reaction toward fire. It is better suited to the standards in force as regards reaction to fire. It also exhibits an advantageous illuminating performance and has good acoustic properties, when it incorporates a support appropriate for sound insulation. The invention also relates to an illuminating structure composed of said web added to a rigid or semirigid support. This structure can be used in particular as partition wall or ceiling in a building. With regard to the web proper, it can be used as painter's canvas or stretched fabric or part of these.

Abstract: A transparent substrate including at its surface a grating of parallel lines of patterns separated by zones with a refractive index different from that of the patterns, the grating diffusing light and including at least 4 sub-gratings, each sub-grating including plural blocks of identical patterns with a width, each block including 2 to 10 of the patterns. Centers of gravity of neighboring patterns inside a block are separated by a constant period, the distance between neighboring blocks vary in a non-monotonic manner when passing from one edge of the sub-grating to the other edge of the sub-grating.

Abstract: A transparent substrate including at its surface a grating of parallel lines of patterns separated by zones with a refractive index different from that of the patterns, the grating diffusing light and including at least 4 sub-gratings, each sub-grating including plural blocks of identical patterns with a width L, each block including 2 to 10 of the patterns. Centers of gravity of neighboring patterns inside a block are separated by a constant period p, the distance Db between neighboring blocks vary in a non-monotonic manner when passing from one edge of the sub-grating to the other edge of the sub-grating, while being greater than 0 times L and less than 20 times L, and so that it is at least once greater than 1.2 Dbm and at least once less than 0.7 Dbm, Dbm being the arithmetic mean of distances between blocks of the sub-grating, and the period p varying from one sub-grating to another in a non-monotonic manner between 0.5 pm and 1.