Abstract: Lamps and bulbs are disclosed generally comprising different combinations and arrangement of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffusing layer. This arrangement allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of a co-planar arrangement of LEDs. Additionally, this arrangement allows aesthetic masking or concealment of the appearance of the conversion regions or layers when the lamp is not illuminated. Some embodiments of the present invention utilize LED chips to provide one or more lighting components instead of providing the components through phosphor conversion. This can provide for lamps that can be operated with lower power and can be manufactured at lower cost.

Abstract: A system and method for optimization of code with non-adjacent loops. A compiler builds a node tree, which is not a control flow graph, that represents parent-child relationships of nodes of a computer program. Each node represents a control flow statement or a straight-line block of statements of the computer program. If a non-adjacent loop pair of nodes satisfy predetermined conditions, the compiler may perform legal code transformations on the computer program and corresponding node transformations on the node tree. These transformations may make adjacent this pair of loop nodes. The compiler may be configured to perform legal code transformations, such as head and tail duplication, code motion, and if-merging, in order to make adjacent these two loop nodes. Then loop fusion may be performed on this loop pair in order to increase instruction level parallelism (ILP) within an optimized version of the original source code.

Abstract: A driver module is configured to generate the drive signals necessary to drive an LED or an array of LEDs of one or more LED luminaires. The driver module may, but need not, be located remotely from the LED luminaires. Since the driver module provides the drive signals, the LED luminaires do not need to have their own driver electronics, and as such, can be rendered in a more aesthetically pleasing and cost effective manner. As an example, the driver module may be located within a junction box or escutcheon plate associated with a light fixture and the LED luminaires can be mounted in the existing sockets of the light fixture. The internal wiring of the light fixture may be used to carry the drive signals provided by the driver module to the LED luminaires via the sockets of the light fixture.

Abstract: A lamp comprises an enclosure that is at least partially optically transmissive. The enclosure comprises an optically transmissive lens and a base where the lens is connected to the base; and a LED board supporting an LED. A first of pins and a second pair of pins are rotatable relative to the enclosure and are in the electrical path supplying power to the LEDs. The lamp is positioned between a pair of tombstone connectors such that the first pair of pins engages the first tombstone connector and the second pair of pins engages the second tombstone connector. The first and second pair of pins are inserted into the tombstone connectors and are rotated to engage the electrical connectors in the tombstone connectors.

Abstract: A LED lamp has an enclosure including an optically transmissive lens. LEDs are mounted on a plane in the enclosure and are operable to emit light through the lens when energized through an electrical path. A portion of the lens extends behind the plane of the plurality of LEDs such that a portion of the light is emitted as back light. Approximately between 5 and 25 percent of the total Lumen output of the lamp is emitted as backlight.

Abstract: More effective compiler optimizations provide improved cache utilization. The compiler optimizations include a structure layout optimization that leaves the physical layout of the structure fields intact and instead changes the access order to these fields. The compiler optimizations apply to arrays using array remappings analogous to structure layout optimizations in which the array is considered as a structure and the physical layout of the array remains intact and instead the access order to the array changes.

Abstract: According to one aspect, a luminaire comprises a waveguide body including a central section and first and second separate side sections extending away from the central section along first and second opposed directions, respectively. The central section includes a coupling portion and the waveguide body has a length and includes a plurality of light extraction features that extract light out of the side sections. At least one LED is disposed adjacent the coupling portion and is operated by a power circuit to produce light that is directed into the waveguide body by the coupling portion. At least one structural member extends along the length of the waveguide body for supporting the waveguide body and encloses at least one of the power circuit and the at least one LED.

Abstract: A mounting and locking system for a lighting apparatus is provided. The system is configured to be attached to an electrical junction box connected to a ceiling or a wall. A mounting plate that is attachable to the junction box has extension members extending from a bottom face of the mounting plate. A lighting apparatus has an upper housing assembly and at least one additional housing assembly. The upper housing assembly has a top wall and at least one sidewall. The top wall includes a mounting portion with mounting brackets that are configured to attach to respective extension members when the lighting apparatus is rotated into a locking arrangement with the mounting plate.

Abstract: A modular fixture that is well-suited for use with solid state light sources, such as LEDs, to provide a surface ambient light (SAL). The fixture comprises two structural components: a housing subassembly and a lighting subassembly. These two subassemblies may be removably attached to operate as a singular fixture. Many different lighting subassemblies may be compatible with a single housing subassembly and vice versa. The housing subassembly comprises a frame that is mountable to an external structure. The lighting subassembly comprises the light sources and optical elements that tailor the light to achieve a particular profile. Electronics necessary to power and control the light sources may be disposed in the lighting subassembly. Various mount mechanisms may be used to attach the fixture to a surface such as a ceiling or a wall. Multiple fixtures can be connected serially to provide an extended linear fixture.

Abstract: A modular troffer-style fixture that is well-suited for use with solid state light sources, such as LEDs, to provide a surface ambient light (SAL). The fixture comprises two structural components: a housing subassembly and a lighting subassembly. These two subassemblies may be removably attached to operate as a singular fixture. Many different lighting subassemblies may be compatible with a single housing subassembly and vice versa. The housing subassembly comprises a body that is mountable to an external structure. The lighting subassembly comprises the light sources and optical elements that tailor the light to achieve a particular profile. Electronics necessary to power and control the light sources may be disposed in the housing subassembly, the lighting subassembly, or both. Various mount mechanisms may be used to attach the fixture to a surface such as a ceiling or a wall. Multiple fixtures can be connected serially to provide an extended continuous fixture.

Abstract: The invention describes systems and methods of determining an entity's identity and assessing risk related to the entity's identity using a computer. A computer-based system including a tracking module, an information module, a risk assessment module, and a memory is provided. The tracking module records encounters of the entity with the computer-based system. The information module gathers and detects changes in biographic information and biometric information relating to the entity's identity. The risk assessment module evaluates risks associated with the entity. The memory stores the information.

Abstract: In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. The gas may include oxygen.

Abstract: This disclosure relates to LED based lighting systems, such as surface mounted lighting systems and lighting systems that can connected to an existing grid structure. These lighting systems can be utilized in many settings, for example, as primary lighting systems for a commercial building and for retrofit lighting improvement purposes. Devices according to the present disclosure provide lighting systems capable of mounting to an existing surface, such as a T-bar ceiling structure. These devices can further comprise modular elements which facilitate connections of multiple lighting body components, allowing for multiple lighting arrangements and providing a cost effective and easily configurable lighting design. In some embodiments, multiple lighting components can be attached together by movable joints, allowing further user control over light distribution from the lighting systems.

Abstract: In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. The gas may include oxygen.

Abstract: In one embodiment, a lamp comprises an optically transmissive enclosure. An LED array is disposed in the optically transmissive enclosure operable to emit light when energized through an electrical connection. A gas is contained in the enclosure to provide thermal coupling to the LED array. The gas may include oxygen.

Abstract: A lighting device is disclosed comprising a plurality of light emitters and a heat spreader plate thermally coupled to the plurality of light emitters, wherein the plurality of solid state emitters provides a thermal load upon application of an operating current and voltage, the heat spreader plate dissipating substantially all of the thermal load to an ambient air environment.