A solid state lamp includes a connector and a bulb portion with multiple strips.

A solid state lamp includes a connector and a bulb portion with multiple strips.

A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.

A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.

In one aspect, luminaires are described herein having sensor modules integrated therein. In one aspect, a luminaire described herein comprises a light emitting face including a LED assembly. A sensor module is integrated into the luminaire at a position at least partially overlapping the light emitting face. In another aspect, a luminaire described herein comprises a LED assembly and a driver assembly. A sensor module is integrated into the luminaire along or more convective air current pathways cooling the LED assembly or driver assembly.

A lighting device (1) comprising a driver (7) arranged at a base (2) of the lighting device (1), a heat sink (14) arranged at a portion (3) of the lighting device (1), separate from the driver (7), a light source (13) mounted to the heat sink (14), and a wire (10) arranged to electrically connect the light source (13) to the driver (7), wherein a portion of the wire (10) extending from the base (2) to the portion of the lighting device (1) is arranged to be exposed to light from the light source (13). The present embodiment is advantageous in that the thermal performance is improved and the lifetime of the lighting device (1) is increased. Further, the exposed wire (10) may be illuminated by the light source (13) and visible from outside the lighting device (1), thereby having the appearance of a filament.

Disclosed is a lighting device (1) including a lens (200, 300) comprising an annular collimating structure (100) having a central axis of symmetry (202), said structure comprising a light exit surface (105) and an intermediate region (120) in between an inner region (110) proximal to said axis and an outer region (130) distal to said axis, wherein one of the inner region and outer region consists of a single prism (112) extending from the light exit surface by a first height (h1) and the other of the inner region and outer region comprises a plurality of prisms (132) extending from the light exit surface by a maximum second height (h2), wherein the first height is at least the maximum second height and the intermediate region has an intermediate region surface (120′) separated from the light exit surface by a maximum further height (h3) that is smaller than the first height; and a plurality of solid state lighting elements (20) arranged in a circular pattern on a carrier surface (25) such that the solid state lighting elements are aligned with and facing the intermediate region surface (120′); and wherein the annular collimating structure is made of a material having a refractive index such that the first region is a refractive region and the single prism and the plurality of prisms each reflect light emitted by the solid state lighting elements towards the light exit surface. A luminaire including such a lighting device is also disclosed.

Disclosed is a lighting device (1) including a lens (200, 300) comprising an annular collimating structure (100) having a central axis of symmetry (202), said structure comprising a light exit surface (105) and an intermediate region (120) in between an inner region (110) proximal to said axis and an outer region (130) distal to said axis, wherein one of the inner region and outer region consists of a single prism (112) extending from the light exit surface by a first height (h1) and the other of the inner region and outer region comprises a plurality of prisms (132) extending from the light exit surface by a maximum second height (h2), wherein the first height is at least the maximum second height and the intermediate region has an intermediate region surface (120′) separated from the light exit surface by a maximum further height (h3) that is smaller than the first height; and a plurality of solid state lighting elements (20) arranged in a circular pattern on a carrier surface (25) such that the solid state lighting elements are aligned with and facing the intermediate region surface (120′); and wherein the annular collimating structure is made of a material having a refractive index such that the first region is a refractive region and the single prism and the plurality of prisms each reflect light emitted by the solid state lighting elements towards the light exit surface. A luminaire including such a lighting device is also disclosed.

A spot lighting apparatus includes a first reflection unit, a semiconductor light emitting device, a second reflection unit being provided on an optical axis of the semiconductor light emitting device, and a fixing unit fixing the second reflection unit to be separated from the semiconductor light emitting device, wherein the second reflection unit receives a part of a light released from the semiconductor light emitting device and reflects it toward the first reflection unit, the first reflection unit receives a part of a light released from the semiconductor light emitting device and all or a part of a light reflected on the second reflection unit and reflects them toward the opening part, and the light reflected on the first reflection unit and emitted from the opening part is 80% or more of total lights emitted from the opening part.

A lighting engine, system and method of fabrication are described. The system contains a flexible printed circuit (FPC) shaped as a loop. LEDs are mounted on the FPC to emit light toward a center of the loop. A light guide positioned in an interior of the loop receives light emitted by the LEDs through an edge of the light guide. The light guide has slots formed therein that receive locator pins to limit thermal displacement of the light guide towards the LEDs. Other apparatuses, systems, and methods are also disclosed.