A ceiling mounted light fixture includes a lens assembly including a central lens and a pair of side lenses. The central lens extends along a longitudinal axis, and each side lens extends parallel to the central lens and is positioned on a lateral side of the central lens. The fixture further includes at least one central light emitter for emitting light directly through the central lens and a pair of side light emitters. At least one control component operatively connected to the central light emitter and the side light emitters is configured to operate in a first mode in which the central light emitter is deactivated and the side light emitters are activated, and a second mode in which the central light emitter and the side light emitters are activated.

A luminaire module delivers light with a beam angle of α. The luminaire module includes a light emitting module and a reflector positioned symmetrically about an axis. Light produced by the light emitting module exits the light emitting module from one or more spatially-extended light emitting portions. The light emitting portion(s) is (are) fully contained within a spatially extended notional design envelope which is used to guide the design of reflector and its corresponding reflective surface, such that when any light exiting the light emitting portions through the design envelope strikes the reflective surface of the reflector, the light does not return to the source and escapes from the luminaire module within a beam angle α, with no more than a single reflection from a reflector.

A light fixture includes a lighting module and a ballast. The ballast includes a housing and a power module. The housing includes a front cover and a rear cover. The front cover includes a front wall and upper fins and lower fins that extend from the front wall. The rear cover includes a rear wall and first fins and second fins that extend from the rear wall. The power module includes a plurality of heat generating semiconductor components that are thermally coupled with the rear wall to facilitate cooling thereof.

A light emitting diode (LED) linear worklight that converts point light into a linear light source is disclosed. The LED linear worklight comprises a linear light device and a power handle that connect together. The power handle holds batteries and comprises an LED module. The linear light device comprises a worklight body and a lens. A transparent light pipe is positioned in a reflecting holder inside the worklight body. The reflecting holder holds the light pipe and reflects light back into the light pipe. The LED module emits light into a light receiving end of the light pipe. The received light travels through the light pipe and is emitted from a light emitting surface of the light pipe. The reflecting holder reflects some of the light emitted from the light emitting surface and directs the light toward the lens and the light exits the worklight body.

A light fixture includes a light source, a wavelength-conversion material, and a reflector. The light source is configured to emit a first radiation, and has a front surface and a back surface. The wavelength-conversion material is arranged under the front surface and configured to convert the first radiation to a second radiation which has a first portion not able to reach the reflector and a second portion able to reach the reflector. The reflector is arranged over the back surface and configured to reflect the second portion away from the light source without passing through the wavelength-conversion material. The reflector has an end distant from the light source and is arranged in an elevation different from that of the wavelength-conversion material.

Illumination systems are described for illuminating a target area, e.g., a floor of a room, using active illumination devices in optical communication with passive illumination devices. The active and passive illumination devices of the illumination system are configured and arranged relative to each other in a variety of ways so a variety of intensity distributions can be provided by the illumination system. Such illumination system is implemented to provide light for particular lighting applications, including office lighting, garage lighting, or cabinet lighting.

Disclosed is an LED luminaire, comprising a housing positionable at a building structure location. The housing has at least one light output boundary and configured to direct light therein toward the light output boundary. A light guide configured to be located at the light output boundary to receive light operationally contained within the housing, so as to emit non-directional light at the light output boundary. At least one first LED light engine is located within the housing, the at least one first LED light engine including at least one first LED light source to emit directional light at the light output boundary.

A lighting fixture, including a bus printed circuit board that receives power from an external source, may be configured with programmable drivers. The bus printed circuit board has mechanical features for receiving the programmable drivers to mechanically mount the programmable driver to the bus printed circuit board. Each programmable driver may have a set of spring contacts positioned to engage exposed pads of the bus printed circuit board when the programmable driver is mounted to the bus printed circuit board, to supply power to the programmable driver. The lighting fixture further includes one or more light sources driven by the programmable drivers.

A modular troffer-style fixture particularly well-suited for use with solid state light sources. The fixture comprises a reflector that includes parallel rails running along its length, providing a mount mechanism and structural support. An exposed heat sink is disposed proximate to the reflector. The portion of the heat sink facing the reflector functions as a mount surface for the light sources. The heat sink is hollow through the center in the longitudinal direction. The hollow portion defines a conduit through which electrical conductors can be run to power light emitters. One or more light sources disposed along the heat sink mount surface emit light toward the reflector where it can be mixed and/or shaped before it is emitted from the troffer as useful light. End caps are arranged at both ends of the reflector and heat sink, allowing for the easy connection of multiple units in a serial arrangement.

An optical device includes: a light-transmissive member having a first reflective surface configured to reflect, to an arc-shaped first region around a first axis, first light incident along the first axis and having a light distribution characteristic with an optical axis parallel to the first axis; and a reflector having: a second reflective surface and a third reflective surface intersecting each other on the first axis and disposed such that the first reflective surface is located between the second reflective surface and the third reflective surface; and a fourth reflective surface disposed between the second reflective surface and the third reflective surface to reflect the first light to the arc-shaped first region around the first axis.