Abstract: Provided is an illumination device containing a light source configured to emit an excitation light, a phosphor layer containing a phosphor and configured to allow the excitation light of the light source to be transmitted and emitted therethrough, and a coating film formed by applying a paint containing a pigment and mica and configured to allow the emitted light of the phosphor layer to be transmitted and emitted therethrough, in which the coating film has a light transmission spectrum having a peak wavelength located between a peak wavelength of an emission spectrum of the light source and a peak wavelength of an emission spectrum of the phosphor layer.

Abstract: A headlamp disclosed includes: a laser diode for emitting a laser beam; a light emitting section including a fluorescent material which emits light in response to excitation light emitted from the laser diode; a light-transmitting heat conducting member which is provided so as to face a laser beam irradiation surface of the light emitting section and receive heat of the light emitting section; and an adhesive layer filling a gap between the heat conducting member and the laser beam irradiation surface. This arrangement improves efficiency of the heat conducting member in absorbing the heat of the light emitting section, and consequently cools the light emitting section efficiently.

Abstract: The present invention relates to a light emitting diode (LED). The LED comprises an LED die, one or more metal pads, and a fluorescent layer. The characteristics of the present invention include that the metals pads are left exposed for the convenience of subsequent wiring and packaging processes. In addition, the LED provided by the present invention is a single light-mixing chip, which can be packaged directly without the need of coating fluorescent powders on the packaging glue. Because the fluorescent layer and the packaging glue are not processed simultaneously and are of different materials, the stress problem in the packaged LED can be reduced effectively.

Abstract: An optical construction comprises an optically transmissive first layer having a first and second major surfaces, and an optically transmissive second layer adjacent the first major surface and defining an interface. The optically transmissive second layer comprises a binder and optical beads. The binder comprises from 55 to 99.9 percent by weight of polyethylene oxide segments. A weight ratio of the binder to the optical beads is in a range of from 44:56 to 50:50. A light source is disposed in a fixed orientation relative to the optically transmissive second layer. Methods of making optical constructions, and electronic devices containing them, are also disclosed.

Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b (MN)*c (SiN4/3)*d1 CeO3/2*d2 EuO*x SiO2*y AlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.

Abstract: Provided is a portable ultraviolet device for exploring a mineral resource. The portable ultraviolet device for exploring the mineral resource may include a body, a visible component, an ultraviolet lamp assembly, and a darkroom component. The visible component is coupled to the body to pass through the body so that a mineral resource disposed at a lower portion of the body is observed from an upper side of the body. The ultraviolet lamp assembly part is coupled to the body to emit ultraviolet rays onto the mineral resource. The darkroom component is coupled to a bottom surface of the body to surround the visible component and the ultraviolet lamp assembly and defines an external light blocking space having an openable inlet in a lower portion of the body.

Abstract: A light emitting device of the invention includes a substrate having a metal on a surface thereof; a light emitting element installed on the surface of the substrate; a wire that connects the light emitting element and the metal; and a light reflecting member that covers the metal, the wire having a first bonding ball that is disposed on a surface of the metal, and an extension that extends above the first bonding ball, and the light reflecting member having a protrusion over the first bonding ball.

Abstract: Light modules for converting the wavelength of light are described herein along with methods for using and making such modules and devices incorporating such modules.

Abstract: Provided is a wavelength conversion member, a light emitting device, and a method of manufacturing the light emitting device, with which leakage of unconverted light and contamination of an upper surface of an electrode are prevented, and restriction on a position at which the electrode is to be provided on the light-emitting element is eliminated. The wavelength conversion member provided on a light extracting side of a light-emitting element having an electrode on the light extracting side and configured to convert a wavelength of outgoing light from the light-emitting element includes: a wavelength converting plate having a phosphor excited by the outgoing light, and a through-hole penetrating between a front surface and a back surface so as to correspond to the electrode; and a via electrode made of a conductive material filled in the through-hole, and having an upper surface exposed at the front surface of the wavelength converting plate.

Abstract: A fluorescent screen includes phosphor regions 1-R, 1-G, diffusion region 1-B and reflecting means 10 formed on a region that includes phosphor regions 1-R and 1-G and diffusion region 1-B. Reflecting means 10 includes fluorescent light reflecting layer 11, phase difference layer 12, and polarizing layer 13 deposited in that order. Fluorescent light reflecting layer 11 transmits excited light 4 and reflects fluorescent light from phosphor regions 1-R and 1-G. Polarizing layer 13 both transmits excited light 4 and, of diffused light of the excited light (4) that was entered from diffusion region 1_B through Phase difference layer 12, transmits TM polarized light and reflects TE polarized light.

Abstract: Provided is a light emitting diode (LED) illumination module. The LED illumination module includes a fluorescent substance plate mounted to be capable of being attached to and detached from an opening formed in a top surface of a heat sink. Also, the LED illumination module includes a lens that covers the opening of the heat sink and is mounted to be capable of being attached to and detached from the heat sink.

Abstract: In one embodiment, an LED light bulb includes an LED module, a base portion on which the LED module is disposed, and a globe attached to the base portion. The LED module includes an ultraviolet to violet light-emitting LED chip mounted on a substrate. A lighting circuit and a bayonet cap are provided in and on the base portion. A fluorescent film is provided on an inner surface of the globe, and emits white light by absorbing ultraviolet to violet light emitted from the LED chip. The fluorescent film has a film thickness in a range of 80 to 800 ?m. In the LED light bulb, an amount of ultraviolet light which leaks from the globe is 0.1 mW/nm/lm or less.

Abstract: A light distribution device includes a light transmissive substrate having first and second opposing faces and a plurality of substantially parallel linear prisms on the second face that extend in a longitudinal direction of the substrate. The light distribution device is configured to connect to a light assembly including a linear light source with the first face of the substrate facing the light source, with the linear prisms substantially parallel to a light source longitudinal axis and with and the substrate having a non-planar cross-sectional shape such that at least a major portion of the substrate is concave relative to the light source. When connected, the light distribution device is configured to receive light from the light source and distribute the light emerging from the second face of the substrate in a batwing distribution pattern in a plane perpendicular to the light source longitudinal axis.

Abstract: A light emitting device, comprises: a light source that emits excitation light; a light guide that propagates the excitation light, and in which the refractive index of the center part (core) of a cross section is higher than the refractive index of the peripheral part (cladding); a wavelength conversion member that absorbs the excitation light propagated by the light guide and converts the wavelength thereof, and releases light of a predetermined wavelength band; and a shielding member that blocks the wavelength of at least part of the excitation light and the light emitted from the wavelength conversion member.

Abstract: A portable light includes an elongated housing having a longitudinal axis, a light source positioned within the elongated housing, and an attachment member movably coupled to the elongated housing to hang the portable light from a support structure. The attachment member is movable to a first position, in which the attachment member generally extends from the elongated housing in a direction parallel to the longitudinal axis, and to a second position, in which the attachment member generally extends from the elongated housing in a direction perpendicular to the longitudinal axis.

Abstract: A backlight assembly comprising: a plurality of fluorescent lamps each including a lamp tube having a fluorescent layer, a discharge gas contained in the lamp tube, a first electrode disposed in the lamp tube, and a conductive terminal capacitively coupled to the first electrode; and a lamp socket which secures the plurality of fluorescent lamps.

Abstract: A lighting device is provided in accordance with the present invention having reduced luminance and color unevenness. A plurality of solid-state light emitting elements are mounted on a base substrate. An optical member is further mounted on the substrate and arranged so as to cover light emitting surfaces of the light emitting elements, the optical member having a semicircular or semielliptical cross-sectional surface, and gutter-shaped in a longitudinal direction with respect to the substrate. A wavelength converting member covers the semicircular or semielliptical cross-sectional surface of the optical member, and is excitable by light from the solid-state light emitting elements to thereby emit wavelength-converted light. In various embodiments light diffusion members may be further distributed among the light emitting elements.

Abstract: Disclosed is an apparatus for an optical assembly for an end cap (30) of a lighting fixture (10). The optical assembly includes an outer lens (50) and an inner lens (40) interior of the outer lens (50). The end cap (30) may be coupled to a lighting fixture main housing (12) and configured to enable light from a light source (18) within the main housing (12) to enter the end cap (30), be directed through the inner lens (40), and out the outer lens (50).

Abstract: A cover for a compact fluorescent light (CFL) bulb is provided. The cover includes a housing formed of clamshell sections that are mutually engageable about the CFL bulb and, when engaged, define an upper body portion having an interior for receiving the CFL bulb and a cylindrically-shaped neck extending downwardly from the upper body portion for encircling a base of the CFL bulb. A resilient member extends inwardly from opposite sides of the cylindrically-shaped neck and is biasable against the base of the CFL bulb to grip and retain the base when the clamshell sections are mutually engaged to secure the cover to the CFL. The cover may also include a flange defining a rectangular slot through which the CFL bulb is extendable to facilitate securing the bulb to a light socket.

Abstract: A combination for replacing a ballast of a conventional fluorescent fixture without ever having to wire the ballast to the conventional fluorescent fixture, wherein the conventional fluorescent fixture has a conventional hood, a conventional set of power supply wires, and a conventional set of lamp socket wires. The combination includes a socket, a ballast, and apparatus for electrically, mechanically, and interchangeably connecting the ballast to the socket without ever having to wire the ballast to the conventional fluorescent fixture. The socket mounts to the conventional hood of the conventional fluorescent fixture, is electrically spliced to the conventional set of power supply wires of the conventional fluorescent fixture, and is electrically spliced to the conventional set of lamp socket wires of the conventional fluorescent fixture.

Abstract: A lighting device including a photoluminescent plate may be provided that includes a light source and a photoluminescent plate disposed over the light source. The photoluminescent plate includes a base layer and a first phosphor layer. The base layer transmits light and has a first roughness on one surface thereof. The first phosphor layer is disposed on the one surface of the base layer and includes a first phosphor.

Abstract: A compact fluorescent lamp (CFL) including an insulating barrier between heat sources and heat sensitive components. The heat sensitive barrier is in the form of an insulative layer of cement applied between the heat generating components of the CFL and one or more heat sensitive components of the CFL. The cement can also fix or secure various components within the lamp thereby eliminating the need for some or all of the support structure of a conventional CFL.

Abstract: A headlamp disclosed includes: a laser diode for emitting a laser beam; a light emitting section including a fluorescent material which emits light in response to excitation light emitted from the laser diode; a light-transmitting heat conducting member which is provided so as to face a laser beam irradiation surface of the light emitting section and receive heat of the light emitting section; and an adhesive layer filling a gap between the heat conducting member and the laser beam irradiation surface. This arrangement improves efficiency of the heat conducting member in absorbing the heat of the light emitting section, and consequently cools the light emitting section efficiently.

Abstract: An illuminator and a method for fabricating the illuminator are disclosed. The illuminator comprises at least a light source and a discriminator. The light source comprises one or more luminescent layers that substantially convert the energy of a primary electromagnetic radiation to an output radiation. The discriminator comprises one or more layers that substantially transmit the primary electromagnetic radiation to the one or more luminescent layers and reflect at least a portion of the output radiation from the one or more luminescent layers to the viewing hemisphere. A method for applying the illuminator to an object is also disclosed.

Abstract: A light converter, and lights and displays incorporating the light converter are disclosed together with methods of making the light converter. The light converter has a substrate having a first layer of phosphor particles disposed on an area of one surface of the substrate. The first layer has a thickness of about 1 monolayer of phosphor particles, and the phosphor particles in the first layer form a uniform and dense layer. The thickness of the substrate can be between about 25 ?m and about 500 ?m in embodiments intended to be flexible and between about 0.5 mm and 2 mm in embodiments that can be formed into rigid shapes. The screen weight of the phosphor particles is between about 0.5 mg/cm2 and about 40 mg/cm2. The substrate can include a base layer and an adhesive layer.

Abstract: An illumination module includes a color conversion cavity with a first interior surface having a first wavelength converting material and a second interior surface having a second wavelength converting material. A first LED is configured to receive a first current and to emit light that preferentially illuminates the first interior surface. A second LED is configured to receive a second current and emit light that preferentially illuminates the second interior surface. The first current and the second current are selectable to achieve a range of correlated color temperature (CCT) of light output by the LED based illumination device.

Abstract: An illuminating device includes a case, a heat sink block, an LED array, two waterproof plastic sheets and two covers. The case has a fluid inlet, a fluid outlet and two partition grooves. The heat sink block has a carrying platform and a fluid channel. The fluid channel is conformally disposed in the partition grooves and communicated with the fluid inlet and the fluid outlet. The LED array is located on the carrying platform. The waterproof plastic sheets respectively overlay the fluid inlet and the fluid outlet. The waterproof plastic sheets have a first opening communicated with the fluid channel. The covers respectively overlay the waterproof plastic sheet and a part of the case and have a second opening corresponding to the first opening. A fluid flows through the fluid channel via the second openings and the first openings so as to discharge heat from the LED array.

Abstract: The invention relates to a white emitting light source with an improved luminescent material of the formula (AEN2/3)*b(MN)*c(SiN4/3)*d1CeO3/2*d2EuO*xSiO2*yAlO3/2 wherein AE is an alkaline earth metal chosen of the group of Ca, Mg, Sr and Ba or mixtures thereof and M is a trivalent element chosen of the group of Al, B, Ga, Sc with d1>10*d2. In combination with a UV to blue light generating device this material leads to an improved light quality and stability, especially an improved temperature stability for a wide range of applications.

Abstract: A light source device includes a first light source, a second light source having an emission wavelength that is different from the first light source, and a phosphor that is disposed to be distant from the first light source and the second light source and absorbs light in a predetermined excitation wavelength band to emit fluorescence. The phosphor is disposed on an emission light optical path that is shared by the first light source and the second light source. The emission wavelength of the first light source is in the predetermined excitation wavelength band. The emission wavelength of the second light source is outside of the predetermined excitation wavelength band.

Abstract: In a plate-shaped fluorescent member configured to convert the wavelength of the light emitted by a semiconductor light emitting element, the fluorescent member is formed of an inorganic material having a refractive index of 1.5 or more and a light transmittance at the emission peak wavelength of the semiconductor light emitting element of less than 20%. A concave portion is formed, of the surfaces of the fluorescent member, on the surface on the side where the light in the semiconductor light emitting element is mainly emitted. In the fluorescent member, the light transmittance of the light having a wavelength of 380 nm to 500 nm may be less than 20%. The concave portion may be a groove. The concave portion may be a plurality of holes that are scattered.

Abstract: A lamp module includes an external elongated housing made of at least one of a transparent and a translucent material; a lamp terminal with lamp pins at each end of the elongated housing, at least one cold cathode fluorescent lamp (CCFL) disposed in the external elongated housing a reflective layer disposed in the external lamp elongated housing, and an electronic connector adapter having a plurality of contact pins at one end and a plurality of connecting jacks at an opposite end for receiving the lamp pins of one of the lamp terminals.

Abstract: An integrated optic lamp assembly includes a rigid mounting structure, a base, a light source, and a reflector. The base, light source, and reflector are supported by the mounting structure. The base is configured to operationally connect to a light source socket. The reflector is configured and positioned relative to the light source to distribute light emitted from said light source in a predetermined light distribution pattern.

Abstract: Disclosed herein are transparent color displays with nanoparticles made with nonlinear materials and/or designed to exhibit optical resonances. These nanoparticles are embedded in or hosted on a transparent substrate, such as a flexible piece of clear plastic or acrylic. Illuminating the nanoparticles with invisible light (e.g., infrared or ultraviolet light) causes them to emit visible light. For example, a rare-earth doped nanoparticle may emit visible light when illuminated simultaneoulsy with a first infrared beam at a first wavelength ?1 and a second infrared beam at a second wavelength ?2. And a frequency-doubling nanoparticle may emit visible light when illuminated with a single infrared beam at the nanoparticle's resonant frequency. Selectively addressing these nanoparticles with appropiately selected pump beams yields visible light emitted from the nanoparticles hosted by the transparent substrate in a desired pattern.

Abstract: A connection mechanism is provided for connection to a lamp tube, including a male member and a female member. The female member has a wave-shaped structure on an inner surface thereof. The male member has a main body and several pins, wherein each pin has a curved slope and a curved surface connecting the main body with the curved slope. The male member is rotatable relative to the female member when in a first position, wherein the curved slope is slidable on the wave-shaped structure. The curved surface is engaged with the wave-shaped structure when the male member moves to a second position, so as to restrict rotation between the male and female members.

Abstract: A light emitting diode lighting lamp includes: an LED module having at least one LED PCB and a plurality of LED devices which are disposed on the LED PCB; a cover enclosing the LED module; and a pair of bases which are respectively connected to both ends of the cover. The respective base includes: a cap which coupled to an end of the cover; a pin portion for applying electricity to the LED module; a fixing portion surrounding a lower end of the pin portion to fix the pin portion; and a guard which is formed to be higher than an end of the pin portion and encloses the pin portion along a circumference direction.

Abstract: In a plate-shaped fluorescent member configured to convert the wavelength of the light emitted by a semiconductor light emitting element, the fluorescent member is formed of an inorganic material having a refractive index of 1.5 or more and a light transmittance at the emission peak wavelength of the semiconductor light emitting element of less than 20%. A concave portion is formed, of the surfaces of the fluorescent member, on the surface on the side where the light in the semiconductor light emitting element is mainly emitted. In the fluorescent member, the light transmittance of the light having a wavelength of 380 nm to 500 nm may be less than 20%. The concave portion may be a groove. The concave portion may be a plurality of holes that are scattered.

Abstract: A showcase comprising an illumination apparatus which includes a shade member constituted of a light-transmitting front wall positioned on the side of the light emitting surfaces of LED elements, and a back wall positioned on the side of a substrate provided with the LED elements, the front wall comprising a curved portion having an arc-like section and a pair of flat portions extended continuously from both ends of the curved portion to intersect with the back wall at an acute angle, corner portions where the flat portions intersect with the back wall being a pair of engaging portions; and a holder provided with a plurality of engagement portions and the like with which the engaging portions are disengageably engaged.

Abstract: A light-extraction apparatus for an optical-film lighting set having a visible-light coating include a transparent sealed body, a wide AOR (0 degree to 90 degrees) optical film for reflecting ultraviolet lights and a visible light layer. The transparent sealed body is formed as a hollow shell body to accommodate an ultraviolet light source. A supporting member coated with the optical film and the visible light layer is constructed to a wall of the shell body or inside the shell body. The visible light layer is consisted of monolayered fluorescent or phosphorescent particles, and the particles are evenly distributed to coat on the interior wall of the shell body or the supporting member inside the shell body in a sparse scattering manner. A fixed area ratio of the coverage of the particles to that of the inter-particle spacing is then provided to the visible light layer for obtaining a higher illumination performance.

Abstract: The present invention relates to a light emitting diode (LED). The LED comprises an LED die, one or more metal pads, and a fluorescent layer. The characteristics of the present invention include that the metals pads are left exposed for the convenience of subsequent wiring and packaging processes. In addition, the LED provided by the present invention is a single light-mixing chip, which can be packaged directly without the need of coating fluorescent powders on the packaging glue. Because the fluorescent layer and the packaging glue are not processed simultaneously and are of different materials, the stress problem in the packaged LED can be reduced effectively.

Abstract: A headlamp includes an laser element for emitting a laser beam; a light emitting section for emitting fluorescence by receiving the laser beam emitted from the laser element; and a parabolic mirror for reflecting the fluorescence emitted from the light emitting section, the light emitting section being placed so that a focal point of the parabolic mirror and a periphery of the focal point are positioned on the light emitting section, the light emitting section being most strongly excited at a portion corresponding to the focal point, meanwhile, at a portion corresponding to the periphery of the focal point, the light emitting section being excited with intensity being dependent on light intensity distribution of the excitation light on an irradiation surface of the light emitting section.

Abstract: A lighting device comprising first and second groups of solid state light emitters, which emit light having peak wavelength in ranges of 430 to 480 nm, and first and second groups of lumiphors which emit light having dominant wavelength in the range of 555 to 585 nm. In some embodiments, if current is supplied to a power line, a combination of (1) light exiting the lighting device emitted by the first group of emitters, and (2) light exiting the lighting device emitted by the first group of lumiphors would have a correlated color temperature which differs by at least 50 K from a correlated color temperature which would be emitted by a combination of (3) light exiting the lighting device which was emitted by the second group of emitters, and (4) light exiting the lighting device which was emitted by the second group of lumiphors.

Abstract: An optical film is provided herein which may include a base film including a material having optical transmittance and a thermal resistance, a matrix layer disposed on the base film and including a fluorescent material, and a viscous layer disposed on the matrix layer including a material having adhesive property, wherein the viscous layer may have a prescribed thickness.

Abstract: High throughput UV curing systems for mass curing of a plurality of articles without compromising product quality. The systems comprise a plurality of UV banks, each bank comprising a plurality of fluorescent UV lamps, thereby creating a consistent blanket of UV energy. A plurality of coated articles are positioned between pairs of banks such that the UV exposure or dosage is evenly distributed for each article. The fluorescent UV lamps use proportionally lower energy per unit and generate less heat than standard UV lamps, while sufficiently curing the coating on each article. Throughput is increased compared to currently available systems because the systems are easier to maintain requiring less downtime, can cure significantly more articles per cycle, and reduce the number of rejected products.

Abstract: An LED module comprises a platform having a recession, wherein the recession presents a center section with a bottom and an enlarged section surrounding the center portion. An LED chip is arranged on the bottom of the center section. A bond wire leads from the LED chip to the bottom of the enlarged section in order to contact a first electrode of the LED chip. In one embodiment the bond wire is electrically connected to the back side of the platform by means of a through contact leading from the bottom of the enlarged section through the platform to the backside of the platform. In another embodiment a first conducting path leads from a first electrode of the LED chip across the side wall of the recession to the surface of the platform and from there across a lateral wall of the platform to the back side of the platform.

Abstract: A luminaire includes a single luminaire housing that includes thermally isolated light source and power control device compartments. At least one light source is disposed within the luminaire housing, and at least one power control device is disposed within a second, thermally isolated compartment. The light source and power control device compartments are separated by a chamber that includes a substantially nonconductive member, which prevents heat from the light source compartment from travelling to the power control device compartment. Thermally isolating the power control device from at least a portion of the heat generated by the light source allows the power control device to be disposed relatively close to the light source without becoming overheated and damaged. A hollow, threaded rod extends between and couples together the light source compartment and power control device compartment.

Abstract: A lighting unit can form a plurality of light distribution patterns without use of a shield and without an act of shielding light from a light source. The lighting unit can include a laser diode, a fluorescent member with a fluorescent portion configured to receive blue light from the laser diode and emit white light, and a projector type lens configured to project the white light. The fluorescent member can be rotated around a rotation shaft perpendicular to the optical axis of the projector type lens and shaped such that when the fluorescent member is rotated by a predetermined angle by the driving member and viewed from the projector type lens, a plurality of contours of the fluorescent portion can be changed according to the predetermined angle.

Abstract: A lighting device including at least one conversion element and a least one LED, which emits light into the conversion element. The light is then converted and emitted with a high radiant flux. The at least one LED emits light in the wavelength range of ?220 nm to ?800 nm and the at least one conversion element converts at least part of the light from the at least one LED to light in the wavelength range of >300 nm to <1000 nm. In some embodiments, the at least one conversion element includes a ceramic conversion material.

Abstract: According to one embodiment, an LED luminaire includes a housing, an LED module mounted on one end of the housing, and a resin member configured to cover a peripheral portion of the LED module and fix the LED module to the housing.

Abstract: Embodiments of fluorescent display screens having an intermediate layer between a light-emitting fluorescent layer and an excitation filter layer are disclosed. The intermediate layer includes (1) a low-index layer disposed between the light-emitting fluorescent layer and the excitation filter layer and (2) an index bridging layer disposed between the low-index layer and the excitation filter layer. The insertion of the low-index layer and the index bridging layer according to the above configuration reduces the sensitivity of the excitation coupling to the non-uniformities in the excitation filter layer and variability in the output frequency of the excitation source, leading to improved uniformity of display intensity without significant compromise in the excitation coupling efficiency. A index bridging region made of a hard coat also provides abrasion resistance and provides structure rigidity to the adjacent excitation filter layer.

Abstract: An adapter structure which cooperates between a modular electrical distribution unit and a light fixture to facilitate electrical connection therebetween. The adapter structure includes an adapter module having an insulative housing containing electrical conductors extending therethrough and defining connectors at input and output ends thereof. The housing mounts directly to the light fixture, preferably within and extending through a knock-out port in a wall of the light fixture, and a plug-type connector at the output end of the adapter structure can be plug engaged with a compatible connector associated with a electrical power distribution unit. The output end of the adapter has a gripping conductive socket structure which enables pigtail conductors associated with the light fixture to be directly plugged therein.