Abstract:
Apparatuses and methods for adapting unfinished lighting fixture rough-ins to receive a lighting module, such as an incandescent light bulb or a light-emitting diode (LED) lighting device, are disclosed. According to one aspect, a universal adapter is provided that can be inserted into an existing lighting fixture rough-in, secured in place, and electrically connected to the lighting fixture rough-in. In this way, the adapter stands in place of the finishing section typically used in current lighting fixture designs. As a result, the adapter can modify an unfinished lighting fixture so that it can be used with a variety of lighting elements beyond those designed to be used with the specific configuration of the lighting fixture rough-in.
Abstract:
Solid state lighting systems using organic LEDs (OLEDs) are disclosed. Embodiments of the present invention provide a solid state lighting system and a luminaire wherein substantially white light is generated by a combination of an organic LED (OLED) and another type of solid state emitter. The other type of solid state emitter may be, for example, a conventional LED made from inorganic materials. The OLED is positioned so that substantially white light is emitted from the lighting system by mixing light from the two types of sources. In some embodiments, a dichroic mirror can also be used at the opening of a mixing chamber to prevent absorption of light from the OLED back into the mixing chamber or conventional LEDs within the mixing chamber.
Abstract:
An optical element for a light source and a lighting system using the optical element are disclosed. In example embodiments, the optical element includes an entry surface and an exit surface opposite the entry surface. The entry surface includes at least three subsurfaces, wherein each subsurface is disposed to receive light rays leaving light source. Each of the three subsurfaces is geometrically shaped and positioned to receive light rays entering the optical element through that subsurface in order to direct the light passing through the optical element. In some embodiments the optical element includes a concentrator lens disposed in the exit surface. The optical element can also include a mixing treatment. A lighting system can include multiple optical elements, each paired with a light source such as an LED or LED package.
Abstract:
A lighting device in which a solid state light emitter in a first multi-chip light emitter is spatially offset relative to a solid state light emitter in a second multi-chip light emitter. A lighting device comprising first, second and third multi-chip light emitters, in which any solid state light emitter in the second multi-chip light emitter that is spatially offset relative to a first solid state light emitter on the first multi-chip light emitter by less than 10 degrees emits light of a hue that differs from the hue of light emitted by the first solid state light emitter by more than seven MacAdam ellipses. A solid state light emitter support member comprising a center region and at least first, second and third protrusions extending from the center region. A lighting device comprising at least a first housing member, and means for emitting substantially uniform light.
Abstract:
A solid state lighting device includes a device-scale stamped heatsink with a base portion and multiple segments or sidewalls projecting outward from the base portion, and dissipates all steady state thermal load of a solid state emitter to an ambient air environment. The heatsink is in thermal communication with one or more solid state emitters, and may define a cup-like cavity containing a reflector. At least a portion of each one sidewall portion or segment extends in a direction non-parallel to the base portion. A dielectric layer and at least one electrical trace may be deposited over a metallic sheet to form a composite sheet, and the composite sheet may be processed by stamping and/or progressive die shaping to form a heatsink with integral circuitry. At least some segments of a heatsink may be arranged to structurally support a lens and/or reflector associated with a solid state lighting device.
Abstract:
LED lighting systems include LEDs of at least two different colors, a reflective layer and a diffusion layer. The reflective layer has a transmittance-to-reflectance ratio that is configured to homogenize intensity of the light emitted from the LEDs. The diffusion layer is configured to homogenize color uniformity of the light.
Abstract:
A lighting device, comprising a solid state light emitter and a light filter. At least a portion of light emitted by the light emitter contacts the filter, and at least part of the light passes through the filter. Also, such lighting devices further comprising lumiphor, in which at least some of the first part of the light is absorbed by the lumiphor, which then emits light, and at least a portion of any light emitted by the lumiphor directed toward the filter is reflected by the filter. Also, a method of lighting, comprising illuminating a solid state light emitter in such devices. Also, a lighting device, comprising a solid state light emitter; a lumiphor and filter means for allowing at least a portion of light emitted by the light emitter to pass through and for reflecting a second portion of light emitted by the lumiphor after the lumiphor is excited.
Abstract:
A reflector system for a lighting device. The system uses two reflective surfaces to redirect the light before it is emitted. The light source/sources are disposed at the base of a secondary reflector. The first reflective surface is provided by a primary reflector which is arranged proximate to the source/sources. The primary reflector initially redirects, and in some cases diffuses, light from the sources such that the different wavelengths of light are mixed as they are redirected toward the secondary reflector. The secondary reflector functions primarily to shape the light into a desired output beam. The primary and secondary reflectors may be specular or diffuse and may comprise faceted surfaces. The reflector arrangement allows the source to be placed at the base of the secondary reflector where it may be thermally coupled to a housing or another structure to provide an outlet for heat generated by the sources.
Abstract:
Apparatuses and methods for adapting unfinished lighting fixture rough-ins to receive a lighting module, such as an incandescent light bulb or a light-emitting diode (LED) lighting device, are disclosed. According to one aspect, a universal adapter is provided that can be inserted into an existing lighting fixture rough-in, secured in place, and electrically connected to the lighting fixture rough-in. In this way, the adapter stands in place of the finishing section typically used in current lighting fixture designs. As a result, the adapter can modify an unfinished lighting fixture so that it can be used with a variety of lighting elements beyond those designed to be used with the specific configuration of the lighting fixture rough-in.