Abstract:
A lens (1) comprising a centrally extending axis (A) being perpendicular to a lens axis (L) of the lens, the lens being adapted for retracting light rays from a light source positioned off-axis with respect to the centrally extending axis, the lens comprising a first plurality of slits (21, 22, 23, 24) extending entirely in an interior of the lens and comprising a length (l) extending perpendicular to the centrally extending axis, a width (w) extending parallel to the centrally extending axis and a thickness (t) extending perpendicular to both the length and the width, the first plurality of slits being mutually parallel and covering between 40% and 60% of a plane in which both the centrally extending axis (A) and the length (l) and width (w) of the first plurality of slits (21, 22, 23, 24) extend.
Abstract:
The present invention provides a high power LED electro-optic assembly (40) including conductive heat sink (18) and an LED (14) mounted at one end of the heat sink. The LED (14) is in electrical engagement with the heat sink (18). The assembly (40) also includes a reflector (2) mounted at the other end of the heat sink. An insulating bond material (19) is provided between the reflector and the sink. The assembly (40) further includes a conductive bonding pin (15) extending through the reflector (12) and is in conductive engagement therewith and an electrical engagement (16) which electrically engages the pin (15) to the LED (14). Finally, an electric sleeve assembly (30) where the sleeve (32) is coated with an electrical insulating coating (34) is applied to the LED electro-optic assembly.
Abstract:
The present invention provides a high power LED electro-optic assembly (40) including conductive heat sink (18) and an LED (14) mounted at one end of the heat sink. The LED (14) is in electrical engagement with the heat sink (18). The assembly (40) also includes a reflector (2) mounted at the other end of the heat sink. An insulating bond material (19) is provided between the reflector and the sink. The assembly (40) further includes a conductive bonding pin (15) extending through the reflector (12) and is in conductive engagement therewith and an electrical engagement (16) which electrically engages the pin (15) to the LED (14). Finally, an electric sleeve assembly (30) where the sleeve (32) is coated with an electrical insulating coating (34) is applied to the LED electro-optic assembly.
Abstract:
Die vorliegende Erfindung betrifft eine Leuchte, vorzugsweise eine Wand- und/oder Deckenleuchte, mit zumindest einer vorzugsweise punktförmigen Lichtquelle, vorzugsweise in Form einer LED, und zumindest einem Optiksystem zur Steuerung der Lichtausbreitung. Die Erfindung betrifft weiters ein Verfahren zur Herstellung einer solchen Leuchte. Erfindungsgemäß besitzt das Optiksystem zur Steuerung der Lichtausbreitung mehrere ineinander angeordnete, jeweils zumindest teilweise transparente Korpusteile, die von dem Licht der Lichtquelle nacheinander durchstrahlbar sind, wobei zumindest ein Innenteil und zumindest ein Außenteil vorgesehen ist, welches sowohl das genannte Innenteil als auch die Lichtquelle und den Bereich, in den die Lichtquelle emittiert, umschließt. Das besagte Außenteil ist hierbei insbesondere dazu vorgesehen, im ausgeschalteten Zustand der Lichtquelle das äußere Erscheinungsbild der Leuchte zu prägen. Das Innenteil des Optiksystems ist indes vorgesehen, beispielsweise durch Bündelung, Streuung oder Reflexion des abgegebenen Lichts das Erscheinungsbild der Leuchte im eingeschalteten Zustand zu prägen.
Abstract:
A display device comprising a body member having a side member which, in plan view, conforms to a first profile; characterised by a first transparent member (15) located within, and by, the body member (12) the first transparent member (15) having a boundary (16) conforming to and lying within the first profile, a second transparent member (17) located within, and by, the body member (12) the second transparent member (17) having a boundary (18) conforming to and lying within the first profile and being spaced from the first transparent member (15) so as to provide a first plenum chamber (19) bounded by the first and second transparent body members (15, 17) and the body member (12); a carrier (20) having a plurality of sources of light (L1 to L5, LL1 to LL6...) located on it located by the body member (12) and spaced from the second transparent member (17) on the opposite side of the second transparent member (17) to the first plenum chamber (19) so as to provide a second plenum chamber (22) bounded by the carrier (20), the second transparent member (17) and the body member (12); the plurality of lights being directed into the second plenum chamber (22); spacing means (29) providing for the distancing of the carrier (20) from the second transparent member (17) by a predetermined amount (P2); a closure member (27) for, and secured to, the body member (12) whereby the carrier (20) is maintained in contact with the second transparent member (17); the first plenum chamber (15) having a filling (25) of optical particles such as chips or balls of glass and the carrier (20) serving to load the second transparent member (17) by way of the spacing means (29) so that the filling (25) is maintained as a pressurised mass of particles; and means (H) providing for the plurality of sources of light to be connectable to at least one source of power to enable at least one of the sources to be energised. The invention further provides for an assembly incorporating two or more display devices as aforesaid.
Abstract:
La présente invention a pour objet un dispositif d'éclairage à diode, comprenant une diode électroluminescente ou DEL associé à un système optique apte à récupérer une part importante du flux lumineux émis par ladite DEL et à produire à distance une tache lumineuse sensiblement uniforme en termes d'éclairement. Dispositif (1) caractérisé en ce que le système optique (3) comprend au moins deux lentilles, à savoir au moins, d'une part, une première lentille de type asphérique (5) et, d'autre part, une seconde lentille (6) disposée entre la DEL (2) et ladite première lentille asphérique (5), ladite seconde lentille (6) présentant une face d'entrée (6') de forme courbe concave tournée vers la DEL (2) avec un rayon de courbure R1 et une face de sortie (6") de forme courbe convexe avec un rayon de courbure R2, avec R2 > R1, la face d'entrée (6') étant située à proximité de la surface d'émission (2') de la DEL (2) et l'épaisseur maximale e du matériau transparent d'indice n formant cette seconde lentille (6), vue selon l'axe optique (X) ou le plan de symétrie de cette lentille (6), vérifiant sensiblement la relation e = R2 x (1 + 1/n) - R1.
Abstract:
An illumination system has a light source that is at least partially enclosed within a light-recycling envelope. The light source is a light-emitting diode that emits light, and a fraction of that light will exit the light-recycling envelope through an aperture. The light-recycling envelope recycles part of the light emitted by the light source back to the light source in order to enhance the output radiance of the light exiting the illumination system.
Abstract:
An illumination system has a light source that is at least partially enclosed within a light-recycling envelope. The light source is a light-emitting diode that emits light, and a fraction of that light will exit the light-recycling envelope through an aperture. The light-recycling envelope recycles part of the light emitted by the light source back to the light source in order to enhance the output radiance of the light exiting the illumination system.
Abstract:
Eine Beleuchtung weist eine Lichtquelle mit wenigstens einer LED (1) und mit wenigstens einer Linse (6, 6') auf, die in der optischen Achse (5) der LED (1) liegt. Die Linse (6, 6') weist in wenigstens einer Ebene, in der die optische Achse (5) liegt, einen kreisförmigen Querschnitt auf.