Abstract: A luminaire is provided that is configured as a window having a light guide with one or more light sources coupled to one or more edges of the light guide. Light emitted from the light guide can be used e.g., to supplement natural light passing through the window or to provide illumination when natural light is not available. Because the light source (or light sources) is incorporated into the window along one or more edges of the light guide, the light source can be either partially or totally concealed from view so as to create an appearance that can have aesthetic advantages. For example, exemplary embodiments of the present invention can have an appearance that is the same or similar to a conventional window/skylight.

Abstract: Embodiments of a lens element have a body that incorporates geometry that defines features for surfaces that receive and transmit light, e.g., from a light emitting diode (LED) device. These features include, for example, curves, bends, arcs, and like curvilinear objects and/or shapes. These embodiments employs these features to change the direction of light that transits the body. These changes can reflect, refract, and/or re-direct light, thus rendering light that emits from the lens element with one or more light distributing characteristics. In one embodiment, the body comprises a cavity with an inner surface that has a first section and a second section that curve, respectively, with positive concavity and with negative concavity relative to the LED device.

Abstract: An optical element for transmission of light produced by a solid state emitter includes at least one diffuser element, and a reflector supported by the at least one diffuser element and paced-apart from the emitter, the reflector defining an annular lip having an aperture therein and an axis normal to a plane defined by the aperture. The reflector further includes a first frustoconical surface coupled with the annular lip and angling outwardly in a first direction at a first angle relative to the axis, a second frustoconical surface coupled to the first frustoconical surface and angled outwardly at a second angle in a second direction opposite to the first direction, and a third surface coupled with the second frustoconical surface and angling outwardly at a third angle.

Abstract: Provided is an omnidirectional lens, having a housing having a closed end and an open end, a series of facets circumferentially arranged on the housing; and a series of concentric facets disposed on the closed end.

Abstract: Embodiments of a lamp that distributes light from one or more light emitting diode (LED) devices with an intensity distribution having a batwing appearance. These embodiments can comprise a lens having a lens body with different types of optics to achieve the preferred distribution. In one example, the lens body has a first section with optics that embody a plurality of prismatic facets and a second section with optics that form a convex shape, curving outward relative to the LED device.

Abstract: LED based lamps are disclosed. In an embodiment, an LED based lamp includes a concave optical diffuser, a concave neodymium-doped glass bulb, a reflector, a printed circuit board that includes a plurality of light-emitting diodes (LEDs) configured to emit light, and a heat sink body. The concave optical diffuser has a first interior volume, and the concave neodymium-doped glass bulb is positioned within the first interior volume. The neodymium-doped glass bulb defines a second interior volume, and both the reflector and the printed circuit board are positioned within the second interior volume. The reflector includes a sloped annular wall with an inner reflective surface and an outer reflective surface, and a bottom portion of the reflector is connected to the printed circuit board. The heat sink is thermally connected to the printed circuit board and to the reflector.

Abstract: Embodiments of a lens element have a body that incorporates geometry that defines features for surfaces that receive and transmit light, e.g., from a light emitting diode (LED) device. These features include, for example, curves, bends, arcs, and like curvilinear objects and/or shapes. These embodiments employs these features to change the direction of light that transits the body. These changes can reflect, refract, and/or re-direct light, thus rendering light that emits from the lens element with one or more light distributing characteristics. In one embodiment, the body comprises a cavity with an inner surface that has a first section and a second section that curve, respectively, with positive concavity and with negative concavity relative to the LED device.

Abstract: A lamp having a lamp base and a longitudinal axis, with a first lens with more than one segment having optic elements located distal from the lamp base. Where optic elements within a segment have similar optical properties and at least two of the segments have optic elements with different optical properties. A second lens located between the distal lens and the lamp base, the second lens having a plurality of total internal reflection (TIR) lens elements each having a focal point, with a finite light source is positioned at about each of the TIR lens element focal points. At least one of the first lens or the second lens is moveable about the longitudinal axis so as to change an alignment between the optic element segments, the TIR lens elements, and the finite light sources.

Abstract: The present subject matter is directed to a system and method for producing a batwing light distribution. A lens is illuminated with a light source, preferably an LED, and the lens is configured to internally reflect a portion of the illuminating light back in a direction generally opposite to the initial illumination direction. Another portion of the light from the light source may pass through other lens surfaces but may also be reflected back past the light source with a reflector positioned on the other side of the lens from the light source. The light source may be mounted on a frame so as to obscure light therefrom from view.

Abstract: A lighting device that uses one or more LEDs, an optical element (e.g., diffuser), and a heat sink to provide thermal management is provided. The overall shape of the lighting device, particularly the heat sink, can be configured to imitate the appearance of a traditional incandescent candelabra lamp. One or more features are also provided to assist with the conduction of heat away from the LED(s) and to the heat sink. The lighting device can provide improved lumen output and light distribution.

Abstract: A directional lamp assembly includes a light source, a reflector having a first portion and a second portion and operative to direct light emitted from the light source to a target area, a heat sink circumscribing the reflector and operative to dissipate heat produced by the light source and a light diffusing lens disposed over the light source and operative to transmit light to the target area. The second portion of the reflector is disposed radially outboard of the first portion and is integrally formed in combination with the heat sink.

Abstract: This disclosure contemplates embodiments of a diffuser element for use with lighting devices that utilize directional light sources, e.g., light-emitting diode (LED) devices. The embodiments utilize a shell wall that forms a volume diffuser with a non-uniform material thickness. The variations in the thickness afford the diffuser with optical characteristics that can improve the distribution of light. In one example, lighting devices that deploy the diffuser element and LED devices distribute light with an optical intensity distribution similar to an incandescent bulb.

Abstract: The present subject matter is directed to a system and method for producing a batwing light distribution. A lens is illuminated with a light source, preferably an LED, and the lens is configured to internally reflect a portion of the illuminating light back in a direction generally opposite to the initial illumination direction. Another portion of the light from the light source may pass through other lens surfaces but may also be reflected back past the light source with a reflector positioned on the other side of the lens from the light source. The light source may be mounted on a frame so as to obscure light therefrom from view.

Abstract: A lighting device that uses one or more LEDs, an optical element (e.g, diffuser), and a heat sink to provide thermal management is provided. The overall shape of the lighting device, particularly the heat sink, can be configured to imitate the appearance of a traditional incandescent candelabra lamp. One or more features are also provided to assist with the conduction of heat away from the LED(s) and to the heat sink. The lighting device can provide improved lumen output and light distribution.

Abstract: A luminaire is provided that is configured as a window having a light guide with one or more light sources coupled to one or more edges of the light guide. Light emitted from the light guide can be used e.g., to supplement natural light passing through the window or to provide illumination when natural light is not available. Because the light source (or light sources) is incorporated into the window along one or more edges of the light guide, the light source can be either partially or totally concealed from view so as to create an appearance that can have aesthetic advantages. For example, exemplary embodiments of the present invention can have an appearance that is the same or similar to a conventional window/skylight.

Abstract: Embodiments of a reflector and a lamp that utilizes the reflector and light-emitting diode (LED) devices to generate an optical intensity distribution substantially similar to that of a conventional incandescent light bulb. The lamp can include a heat dissipating assembly with one or more heat dissipating elements disposed annularly about the envelope and spaced apart from the envelope in order to promote convective airflow. In one embodiment, the reflector operates as a total internal reflection (TIR) lens.

Abstract: The present disclosure describes embodiments of an optical system for use in a lighting device, e.g., replacements for MR/PAR/R directional lamps. In one embodiment, the optical system comprises optical elements (e.g., a lens element) with features that form light from a light source into a light beam. In one embodiment, the optical elements have a plurality of focus points, which do not all converge to a single focus point proximate the light source. Rather one or more of the focus points are spaced apart from the light source so the collective configuration of focus points causes the light beam to exhibit favorable characteristics.