A lighting fixture having a generally planar light output window (10), comprising an outer housing (12), an inner housing (14) which is rotatably received within the outer housing (12) about a first axis perpendicular to the light output window (10), a plurality of light source carriers (40) mounted to the inner housing (14), wherein each light source carrier (40) is mounted for rotation about a second axis parallel to the light output window (10), light sources (72) carried by the light source carriers (40) for directing a light output to the light output window (10) and a rotary adjustment arrangement comprising a first adjustment element (22) for controlling rotation of the inner housing (14) with respect to the outer housing (12) and a second adjustment element (26) for controlling rotation of the light source carriers (40) with respect to the inner housing (14).

Embodiments of invention are directed to a lighting device for use in accent lighting applications. In one embodiment, the lighting device includes a coherent light source, such as a laser, and a diffractive optical element. The diffractive optical element may be, for example, a holographic optical element. The lighting device may be adapted to retrofit into a pre-existing light fixture. In one application, the lighting device may project a static or movable star field and/or static or movable clouds.

An energy consumption device includes a housing that supports a first and second terminal. An energy consuming module, which may include a light emitting diode array, is supported by the housing and is thermally coupled to a thermal bridge that extends below a lower surface of the housing. A cover can be positioned so as to secure the energy consuming module between the cover and the housing. A plurality of magnets can be configured to secure the energy consumption device to a rail that supports powered contacts so that the first and second terminals engage the powered contacts and the thermal bridge is pressed against the rail.

A linkable linear light emitting diode (LED) system provides apparatus and methods for mechanically, optically, and electrically linking multiple LED modules disposed over a wide and separated area of a ceiling system. Openings can be cut in ceiling tiles of a drop ceiling system and the LED lighting modules are coupled to the tile through the opening, with the tile being sandwiched between different portions of the module. A remote driver system is placed within the drop ceiling above the tiles and provides multiple connectors for powering a multitude of lighting modules. Certain of the LED lighting modules include both input and output connectors for both receiving power or data and providing power or data to other modules. In this manner, some of the modules act as master LED lighting modules and those receiving power and/or data therefrom are act as slave modules.

A planar light source emits planar light by power supplied from a mounting member. The planar light source includes an engaging part, a planar-light-emitting panel having a light-emitting surface, and a connecting unit disposed between the engaging part and the planar-light-emitting panel. The engaging part forms a portion of a power supply path for supplying power from the mounting member to the planar-light-emitting panel. The planar-light-emitting panel includes a planar-light-emitting tile and a translucent plate, where one main surface of the planar-light-emitting tile includes a light-emitting region. The planar-light-emitting panel emits, in a lighting state, the planar light from the light-emitting region of the planar-light-emitting tile through the translucent plate. An output of the planar light from the planar light source is adjusted by pressing the light-emitting surface.

The LED plug-in outlet or DC power light has LED-unit(s) to offer one or more than one near-by lighted-location(s) with preferred adjustable angle constriction and each of said LED-unit(s) has built-in plurality of the said dip or chip or dice or COB LED(s) to emit directly or in-directly LED light-beam from big surface of the said each of LED-unit(s) to supply consumer for one LED light offer one or more than one near-by lighted locations for desired or selected-functions, light color(s), brightness(s), light performance(s) while incorporate with circuitry, AC-to-DC circuit, IC, and control device select from sensor, motion sensor, photo sensor, sound sensor, power fail circuit, switch, wireless controller with APP software to make setting or adjustment or selection to make the LED light to turn-on/off, fade-in and fade-out, high-low brightness, motion or non-motion selection, change functions from variety pre-programed functions to offer near-by locations which is less than 30 feet and brightness is less than 100 CD from each of the said LED unit(s).

A luminaire includes a lamp barrel having a light source detachably connected with a lens assembly. The lens assembly includes a lens barrel detachably connected with the lamp barrel and a focusing member on the lens barrel. An adjusting assembly includes a rotatable focusing ring, a lens fixing ring and a lens. The focusing ring includes a spiral groove on an inner surface. The lens fixing ring includes a projected rail on an outer surface. The lens barrel includes a bar shaped through hole extending along an axial direction. The projected rail passes through the bar shaped through hole and is mated with the spiral groove by clearance fit. Rotation of the focusing ring acts on the projected rail through the spiral groove and drives the lens fixing ring and the lens forward and backward in the lens barrel to adjust a distance between the lens and the light source.

A lighting device which supplies a light-emitting element with a current modulated based on a visible light communication signal includes: a DC power supply circuit which supplies the light-emitting element with a first voltage that is a DC voltage; and a current control circuit which (i) includes a current control element connected in series to the light-emitting element, (ii) switches the current control element between a first state and a second state based on the visible light communication signal, the first state and the second state differing in electrical impedance, and (iii) adjusts, to a constant current value corresponding to a constant current instruction signal, a current flowing through the light-emitting element in a period in which the current control element is in the first state, by controlling the current control element.

A linear light is provided with an axially extending housing in which an optical element and an electrical element are integrated. In this context, the optical element is formed as a profile that corresponds approximately to the length of the housing, and the electrical element is also formed as a profile, wherein the profiles can be inserted axially into the housing via a front side and are braced against one another transversially to the axial direction in the mounted state. The invention further relates to a method for mounting this linear light.

A wireless rail system for providing power and control to auxiliary devices on the rail is disclosed. Such a system includes a one or more channels mounted to a structural building component forming a rail. Auxiliary devices on the rail communicate with each other and user devices. Each of the auxiliary devices are addressable either wirelessly or by a parallel bus within the rail. The auxiliary devices are connected and disconnected from the rail by rotating approximately 90 degrees.