Abstract: The invention relates to an optical device for imparting an elongate shape to a light beam emitted by a LED, and to street luminaries which comprise such optical devices. The optical device comprises a lens (2) having an entry diopter (3) and an exit diopter (4) which comprises a first convergent section, a second convergent section and a divergent section bridging said first and second convergent sections.

Abstract: The invention relates to a reflector (1) which comprises an ellipsoidal light reflective wall (21) and a light output (3) lying in a light output plane (32). The light reflective wall is defined as a portion of the internal surface of an ellipsoid. The focal axis (25) of the ellipsoid has a determined angle CC with respect to an axis (V) perpendicular to the light output plane (32). The light reflective wall (21) is the portion of the ellipsoid, which is taken between the most remote point (24) of the ellipsoid from the light output plane and the light output plane (32). The invention further relates to a luminaire which comprises such a reflector and a light source.

Abstract: A compact LED light source providing improved white light, a color temperature adjustment and a low glare. The lighting device comprises a reflective element having a back surface and a wall including at least one window, said wall and back surface forming a reflective cavity with a light outlet, at least one interferential filter and a luminescent screen able to change a first wavelength band into a second wavelength band of an incident light, said luminescent screen being located onto the back surface of the reflective element. The lighting device is arranged such that light sources located outside the reflective element in front of said interferential filter can be positioned for emitting a light beam directed to the back surface of the reflective element comprising the luminescent screen.

Abstract: The invention relates to a reflector (1) which comprises an ellipsoidal light reflective wall (21) and a light output (3) lying in a light output plane (32). The light reflective wall is defined as a portion of the internal surface of an ellipsoid. The focal axis (25) of the ellipsoid has a determined angle CC with respect to an axis (V) perpendicular to the light output plane (32). The light reflective wall (21) is the portion of the ellipsoid, which is taken between the most remote point (24) of the ellipsoid from the light output plane and the light output plane (32). The invention further relates to a luminaire which comprises such a reflector and a light source.

Abstract: The invention relates to an optical device for imparting an elongate shape to a light beam emitted by a LED, and to street luminaries which comprise such optical devices. The optical device comprises a lens (2) having an entry diopter (3) and an exit diopter (4) which comprises a first convergent section, a second convergent section and a divergent section bridging said first and second convergent sections.

Abstract: A lighting device includes at least a light source for emitting light rays and a guide for guiding light rays on a projection plane. The guide is formed by a lens presenting a cylindrical portion extending along an axis perpendicular to the projection plane, and at least one convex shaped surface extending at an extremity of the cylindrical portion. The convex shaped surface is adapted to direct a portion of the light rays emitted from the light source towards the projection plane. This enables to project the light towards a projection plane quasi parallel to the beam direction without using any guides on the projection plane itself.

Abstract: The present invention provides an improved optical light diffusing system for effective and uninterrupted illumination purposes. In particular, the invention is concerned with providing a light collector in the improved diffusing light device that can direct light from a light source to at least one diffusing light guide and can thus prevent the formation of excessively visible or discrete zones within the light guide, resulting in quite uniform and continued lines of light wherein the level of luminance can be flexibly adapted according to different illumination applications.

Abstract: The present invention relates to a lighting device including at least a light source (LS) for emitting light rays and means for guiding said light rays on a projection plane (PP). The guiding means are formed by a lens (OD) presenting a cylindrical portion (CYL) extending along an axis (AX) perpendicular to said projection plane and at least a convex shaped surface (CSH) extending at an extremity of said cylindrical portion. The convex shaped surface is adapted to direct a portion of the light rays emitted from said light source towards said projection plane. The invention enables to project the light towards a projection plane quasi parallel to the beam direction without using any guiding means on the projection plane itself. This solution is consequently relatively compact.

Abstract: The present invention provides an improved optical light diffusing system for effective and uninterrupted illumination purposes. In particular, the invention is concerned with providing a light collector in the improved diffusing light device that can direct light from a light source to at least one diffusing light guide and can thus prevent the formation of excessively visible or discrete zones within the light guide, resulting in quite uniform and continued lines of light wherein the level of luminance can be flexibly adapted according to different illumination applications.

Abstract: The invention relates to a luminaire comprising a plurality of light sources fixedly located in a plurality of positions and comprising at least an electroluminescent diode. Said sources are focused by the same optical system fixed relative to the plurality of sources. Said luminaire comprises electronic means for dimming sources in their emission intensity independently of one another and as a function of their respective positions relative to said optical system. The invention provides an output beam having a dimmable photometric distribution in time and in space at the output of said optical system.

Abstract: A luminaire 1 comprising a light-directing element 3, e.g. a reflector, having a light emission window 5. Said reflector has a shape for directing light originating from an electric light source 7 into an optical fiber system 9 positioned in front of the light emission window. The optical fiber system comprises a bundle of optical fibers 11. Said shape is calculated in accordance with a ray-tracing algorithm which takes into account that said light source is voluminous, e.g. a Light Emitting Diode. The reflector has a shape which is composed of n solids of revolution of parabolic sectors 13, wherein said (adjoining) parabolic sectors form an integral surface 15. The invention further relates to a dynamic road marking unit 19.

Abstract: The invention relates to a luminaire comprising a plurality of light sources fixedly locatee in a plurality of positions and comprising at least an electroluminescent diode. Said sources are focused by the same optical system fixed relative to the plurality of sources. Said luminaire comprises electronic means for dimming sources in their emission intensity independently of one another and as a function of their respective positions relative to said optical system. The invention provides an output beam having a dimmable photometric distribution in time and in space at the output of said optical system.

Abstract: A luminaire 1 comprising a light-directing element 3, e.g. a reflector, having a light emission window 5. Said reflector has a shape for directing light originating from an electric light source 7 into an optical fiber system 9 positioned in front of the light emission window. The optical fiber system comprises a bundle of optical fibers 11. Said shape is calculated in accordance with a ray-tracing algorithm which takes into account that said light source is voluminous, e.g. a Light Emitting Diode. The reflector has a shape which is composed of n solids of revolution of parabolic sectors 13, wherein said (adjoining) parabolic sectors form an integral surface 15. The invention further relates to a dynamic road marking unit 19.