Abstract: Lighting fixtures (20) for attachment to architectural surface structures are adapted to hold light sources (100). The lighting fixtures (20) may include a base plate (32) and mounting brackets (34A, 34B). Clamps (80) are provided that may bias the light source (100) in either the forward or rearward direction. The clamps (80) may include spring arms (92) that center the light source (100) within the fixture (20) in addition to retaining the light source (100) in place. The fixtures (20) may further accommodate overlying structures, such as lenses (350). The lighting fixtures facilitate use with a variety of different architectural structures and formation in various shapes.

Abstract: A potted transformer assembly comprises a housing portion to form an exterior transformer housing, a transformer unit dimensioned to fit within the housing portion, the housing portion including a first passage to receive the transformer unit in an operative position therein, the housing portion having an inner surface which is oriented to provide an interior cavity between the transformer unit and the inner surface, the interior cavity being dimensioned to receive a predetermined quantity of a potting compound, the housing portion further including a second passage in fluid communication with the interior cavity, the second passage being dimensioned to receive a portion of the potting compound therein, the second passage being located on the housing portion in such a manner that, following a transformer encapsulation step, the presence of potting compound in the second passage is indicative of the transformer being substantially encapsulated by the potting compound.

Abstract: A light diffusor (12) is disclosed which includes a translucent or transparent light diffusing portion (24) and a rigid mounting neck (25) coupled to the diffusing portion (24). The diffusing portion (24) has an inwardly extending flange (27) with a series of mounting hole (28) therein. The mounting neck (25) has a generally cylindrical, upright section (30) and an inwardly extending mounting flange (31). The neck inwardly extending mounting flange (31) has a series of mounting holes (33). The light diffusor also has first annular gasket (35) mounted between the mounting neck flange (31) and the diffusing portion flange (27), a second gasket (37) mounted below the diffusing portion flange, and three mounting brackets (40) mounted below the second gasket (37). The first gasket, second gasket and mounting brackets all have mounting holes (36), (37) and (41), respectively.

Abstract: A fluorescent light fixture is suspended by a longitudinally extending trapezoidal pendant bracket/stabilizer. The trapezoidal pendant bracket/stabilizer includes a horizontally extending top brace and a pair of obliquely extending arms extending downward in opposite directions from the top brace in a trapezoidal crossection. Each obliquely extending arm has a flat, horizontally and outwardly extending attachment foot extending longitudinally along a flat top surface of the fluorescent lamp fixture, wherein each attachment foot is attached to the flat top surface of the fluorescent lamp fixture. The horizontally extending top brace is attachable to a ceiling mounted fastener, such as a toggle hanger or other downwardly extending fastener.

Abstract: A recessed lighting fixture has a housing sidewall with a lip around a bottom aperture and a vertical T-slot receiving a locking assembly mounting the housing in an opening in a ceiling with the lip around a lower edge of the opening. The locking assembly has a support member with a lower strut portion and an upper attachment portion pivotally connected to a latching member. The strut portion has legs inserted through the slot so that edges of opposite walls and an axial end of a channel section base provide a U-shape line contact with the ceiling upper surface and upper teeth engage friction surfaces on opposite outside edge portions of the slot. The latching member has a handle carrying a tongue wedged between the legs by pivoting to engage locking feet with friction surfaces on opposite inside edge portions of the slot retaining the lighting fixture in the ceiling.

Abstract: An assembly and a method for attaching a sign-type lighting fixture to an electrical box. The assembly includes a lighting fixture having a mounting plate affixed to the electrical box, an illuminating sign, and a canopy affixed to the lighting fixture, allowing the canopy and the mounting plate to attach quickly. The method first includes affixing a mounting plate to an electrical box and affixing a canopy to a sign-type lighting fixture. Next, the canopy is secured to the mounting plate by inserting at least one wing tab from the canopy through at least one holding tab on the mounting plate. Then, the electrical wiring is connected. After that the wing tab and holding tab are separated. Finally, the wing tab is inserted into at least one offset on the mounting plate, and the canopy is secured to the mounting plate.

Abstract: A ceiling fixture mounting assembly including a box for affixing to a ceiling and containing electrical wiring, the box having opposite vertical sidewalls each with first and second laterally spaced threaded holes receiving corresponding first and second fasteners, and two vertical mounting plates each projecting upwardly from the fixture to terminate in an upper edge and positioned to overlie one of the sidewalls and each having first and second ways receiving the first and second fasteners, respectively, the first way configured for supporting the fixture at an angle to the box for connecting the wires, wherein the improvement comprises each fastener having a head and a threaded portion and the first and second ways having first and second mounting slots, respectively, each having a lower closed end and an upper open end and sized smaller than the head, the plate having a recess at the closed end configured to receive the head such that it is in vertical alignment with the open end, thereby holding the plat

Abstract: A sensor fixture can be affixed within a wall and powered using the same cable along which data signals are transmitted. A data cable is attached to the fixture, and power for a sensor is isolated from the data signals. The sensor may be used in conjunction with a building automation system in order to provide environmental inputs, such as from a motion sensor, a light sensor, and an audio sensor. The sensor may also be combined with LED lights for a combined fixture that lights when sensing motion or other environmental changes, for example.

Abstract: A wallpaper (1) for contacting an electrical device (2), which is attachable to a wall (3), preferably attachable to any kind of room walls or ceiling or flooring of a building, whereas the wallpaper (1) comprises a plurality of conductive stripes (4), and whereas the electrical device (2) features contact pins (5) in order to contact the conductive stripes (4), characterised in that the conductive stripes (4) feature a certain stripe pitch (6) and the pins (5) feature a certain pin pitch (7), whereas different conductive stripes (4) feature different voltages in order to match the contact voltage of the contact pins (5) due to the contacting of different conductive stripes (4) basing on the certain pitches (6, 7) by placing the electrical device (2) in different positions.

Abstract: A light fixture (200) comprises a mounting fixture (501) that is configured and arranged to facilitate mounting the light fixture to a mounting surface other than ground along with at least a first light socket (502) and a plurality of permanently mounted light emitting diodes (LED's) (503). The light socket and the LED's are supported by the mounting fixture. The LED's are configured in an array and are oriented towards the mounting surface when the light fixture is installed on the mounting surface. This light fixture can further comprise an ambient light sensor (504), an animate object detector (505), and/or a timer (506). The wall-washing LED's can be switched on and off automatically (103) to provide the desired decorative effect during the evening hours. In addition, the light socket can be rendered controllable (105) as a function of whether it is dark out and whether an animate object has been detected.

Abstract: A lamp and a hardscape structure illuminated by the lamp are disclosed. The lamp is formed from a plate to which a light fixture is attached. The plate may have a flange, a decorative face plate and side panels attached to direct light from the fixture along the hardscape on which the lamp is mounted. Mounting is effected by positioning the plate between discrete hardscape elements that are stacked one atop another. A portion of the plate projects out from the structure allowing the fixture to cast light on the structure surface. A light transmitting cover is also provided.

Abstract: A flat-panel lamp and fixture system having a removable flat-panel lamp having at least two externally accessible electrode contacts and a suspended fixture for removably receiving at least one of flat-panel lamps and holding at least a portion of each of the flat-panel lamps above a portion of the suspended fixture. The system employs gravity to hold the at least one of flat-panel lamps in alignment having electrical connections for providing electrical connection to the at least two externally accessible electrode contacts.

Abstract: An indirector light fixture in combination with a leveling device which is utilized to position the light fixture at least one of a plurality of preselected angles. A method is also described for positioning the fixture at the at least one of the preselected angles.

Abstract: A retrofit canopy luminaire assembly adapted for downward illumination and having a housing with inwardly-directed ledges near the lower edges of the housing. The luminaire has at least two support brackets secured to at least one of the ledges; a face plate removably secured to the brackets on the lower side of the housing; and a hanging tether attached to one of the brackets and to the face plate. The face plate is adapted to hold lighting fixture components. When the face plate is removed from the brackets, the face plate hangs freely held by the tether to allow free access to the inside of the luminaire.

Abstract: A ceiling light fixture for medical patient rooms and a method for the same. The fixture comprises a body which defines a middle region and two side regions along opposite sides of the middle region. A cover is movably attached to the body and includes a lens over at least the middle region. A graphics image is associated with the middle region and is substantially parallel to the lens. At least one graphics-light source is within the middle region and configured for illuminated display of the graphics image. At least one exam-light source is located within each of the two side regions.

Abstract: An outlet cover with barrier wall, the cover for an outlet box mounted in a building wall including an outer wall with an outer opening; a surrounding wall integrally joined to and extending substantially normal to the outer wall; an L-shaped barrier wall integrally joined to and extending substantially normal to the outer wall, the barrier wall forming an inner opening opposite the outer opening to meet the outlet box, a portion of the barrier wall extending toward the plane of the inner opening, the barrier wall further forming a cover conduit port; an attaching flange integrally joined to the surrounding wall for being placed against the building wall, the attaching flange being a continuous flange about the surrounding wall; a display enclosure forming an interior and an enclosure conduit port; and a conduit having a conduit passage in communication between the cover conduit port and the enclosure conduit port.

Abstract: Devices, apparatus, systems, and methods of installing LED (light emitting diodes) for glass tiles and glass blocks. The LEDs can be housed in flexible strips having flexible bendable transparent housing sleeves with ends that can interconnect by male and female ends to one another with various types of interconnectors. Each separate sleeve can house up to 33 LEDs in a transparent plastic sleeve. A transparent connector sleeve can be slid over the interconnected ends and heat shrunk in place. The glass tiles can be laid out to uniform joints spacings between the glass tiles of approximately 3/16 of an inch. The LED strips can be placed on a surface layer of transparent grout that has been laid in the joint spacing, followed by a top layer of transparent grout. The transparent grout can be removable grout and include clear Silicon. The LED strips can have peel and stick back layers with adhesive backing that allows mounting to the lower surface.

Abstract: A security lighting system is provided for convenient mounting to a standard electrical junction box. The security light fixture includes a housing, a cantilevered arm extending from the housing, and a back plate on an end of the cantilevered arm. The back plate has a reinforced attachment structure capable of supporting the bending moment of the heavy, cantilevered light structure. The attachment structure may include, for example, a reinforced cone. The back plate and cantilevered arm may be integrally formed for convenient manufacturing and added structural strength. The fixture may include a cross bar for attaching to the junction box, with the cross bar serving to interconnect the junction box with the back plate. In one embodiment, the security lighting system provides an option of electrically interconnecting the system to a standard j-box or, alternatively, to an electrical conduit, as desired.

Abstract: A vehicle interior light system includes a lamp, an enclosure internally provided with the lamp, a lens attached to the front of the enclosure, a touch sensor arranged on the back surface of the lens, and a control circuit including a sensor circuit and a switching circuit. The sensor circuit is configured to detect the capacitance of a human body when the lens is touched or approached by a finger or the like. The switching circuit is configured to turn the lamp on and off in response to an output from the sensor circuit.

Abstract: The present invention is an improvement to a ceiling fixture which includes a retaining clip affixed to the base plate of the ceiling fixture, the retaining clip having a pair of vertically spaced apart parallel arms with receiving members therein. The socket has a spring clip affixed thereto with spring arms having retaining members thereon. The retaining members can be inserted into the receiving members of the retaining clip with the socket face down so that the interior of the socket faces the base plate and is retained in this secure manner during shipping.

Abstract: A mounting and lowering system for supporting one or more luminaires or similar devices having use within an indoor space or similarly configured space such as an open-air pavilion or the like, the system comprising a support assembly capable of being raised and lowered above a location within such a space not conveniently available for use in the servicing of luminaires or devices mounted by the system. The present system includes a latching mechanism permitting remote latching and unlatching of the support assembly. Vertical displacement of the support assembly can be effected without power interruption. Primary drive components are positioned within the system to facilitate service and replacement. The invention further contemplates transition apparatus capable of use in indoor spaces having differing ceiling angles.

Abstract: The disclosure herein describes a helicoidal system for securing a recessed light fixture assembly into an opening in a ceiling, wall or the like; the assembly comprises a light reflector having an upper collar and a light reflector support for mounting the light reflector into the opening of the ceiling, wall or the like. The light reflector support has an upper member that engages the upper part of the light reflector and has a helicoidal bearing surface to receive lugs provided on the light reflector whereby rotation of the light reflector, once received in the light reflector support, enables engagement in one rotational direction, and disengagement in an opposite rotational direction, of the light reflector to and from the reflector support.

Abstract: The present invention provides an LED lighting device inlaid on a ceiling. The ceiling is divided into a plurality of lattice by a matrix of metal strip, plastic strip or wood strip, a matrix of LED are installed on the lattice; an AC power is inputted through a power line to an AC/DC converter for being converted into a DC power, and then the DC power passes through a current stabilizer, a resistor, a connector for being inputted to two ends of each row of the LEDs; LEDs of each row are serially connected.

Abstract: A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned, a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies a portion of the light source, and a plurality of end caps secured to a housing of the light fixture and overlying a portion of the light source such that substantially all of the light emitted from the light source passes through the lens assembly and the end caps.

Abstract: A recessed light fixture having a rotation ring allowing rotation of a lamp mounted over the fixture frame aperture, the rotation ring easily rotatable on the frame and held in place by a ring clamp. The recessed light fixture rotation ring has a mechanical brake for locking the ring in place after positioning of the lamp. The ring also has a slip disc positioned between the surface of the frame and the ring to allow easy rotation. The housing of the fixture has junction boxes mounted on side walls which are hinged to the sidewalls of the housing and which swivel into the interior of the housing for ready access after installation through the aperture of the frame. The lamp of the fixture movable about a horizontal adjustment and vertical adjustment axis while also maintaining position with respect to the reflector.

Abstract: A recessed down lighting system having an adjustable retaining bracket. The adjustable retaining bracket facilitates attachment of a reflector to ceilings, walls, or the like of variable thicknesses. The recessed down lighting system may be installed in locations having reduced overhead space above the ceiling or where minimal lateral clearance is available behind the ceiling. The retaining bracket and fastener can be installed and vertically adjusted through the open end of the reflector to secure the reflector to the ceiling.

Abstract: A method of fabricating a flexible emitter using a high molecular compound, including forming an electro-luminescent carbon material on a glass substrate in a predetermined pattern in order to form an emitter pattern thereon, forming an electrode layer of a predetermined height on the emitter pattern and the glass substrate, applying a polymer gel material on the electrode layer, curing the polymer gel material, and separating the flexible emitter from the glass substrate.

Abstract: A lighting fixture where the lighting fixture uses inductive lighting technology or self ballasting lighting elements with one or a plethora of efficient light elements. The lighting fixture is used where high bay or low bay lighting may be used, but incorporates multiple light sources to provide an equivalent light intensity. The multiple light sources can be inductive or multiple fluorescent, LED or other efficient light sources to provide a less expensive cost of operation and installation. The higher efficiency lights could be standard socket type fluorescent or inductive light bulbs that are easily available. The higher efficiency lights will also create less heat that will further reduce the air conditioning or cooling costs for the building. An integrated ballast box with reflector dome retainer is also shown for use with inductive or other lighting that further includes a retaining mechanism for the dome.

Abstract: A lamp and a hardscape structure illuminated by the lamp are disclosed. The lamp is formed from a plate to which a light fixture is attached. The plate may have a flange, a decorative face plate and side panels attached to direct light from the fixture along the hardscape on which the lamp is mounted. Mounting is effected by positioning the plate between discrete hardscape elements that are stacked one atop another. A portion of the plate projects out from the structure allowing the fixture to cast light on the structure surface.

Abstract: The invention provides an adjustable-installed recessed lighting including a lighting body on which a support hole is arranged; a spring leaf having the top end recessed by the support hole and a bottom end; wherein, a sliding chute located below the support hole is arranged on the lighting body; said support hole has multilevel clamping openings along the direction of the height; the top end of said spring leaf is inserted in the clamping opening and the bottom end may slide in the sliding chute. Since the support hole has multilevel clamping openings, the top end of the spring leaf may be inserted in the clamping opening with different height depending on the thickness of the installation wall; because of the setting of the sliding chutes, the spring leaf can keep the same bend for the different thickness of the installation wall so that the installation of the lighting is facility, simple and fastness.

Abstract: The modular track luminaire system of the present invention is a modular lighting system which has a lighting unit which is electronically connected to a remote ballast housing by a removable and reattachable insulated cord and plug system, the luminaire unit electrically connected to the ballast housing through the flexible cord and plug system thereby allowing the entire system to be modularized.

Abstract: The luminous wall system has translucent panels, frame hardware, light fixtures and a reflective plenum. The system includes individual, preferably translucent panels, which are aligned by interconnecting frame extrusions. Stand-off compression brackets are mounted on the supporting subwall and provide for mounting vertical extrusions, as well as for creating sufficient space between the subwall and the system to allow for lighting components, which are mounted on the subwall. Horizontally extending extrusions are aligned and interlocked by an alignment bracket that fits over and fastens to the horizontal extrusions and an intervening vertical extrusion. The panels can be attached to the extrusions via threaded fasteners applied to threaded channels in the extrusions. Alternatively, the panels can fit into unthreaded extrusion channels and be held in place by attachment of a series of overlaying battens.

Abstract: The luminaire of the present invention comprises at least two channel reflectors geometrically arranged in substantially a common plane forming a light emitting region, each channel reflector has one fluorescent lamp holder extending therein and each channel reflector has a channel reflector retaining arm having a ballast therein and extending to a luminaire supporting base.

Abstract: A flexible track for use in a track lighting system which includes two elongated track members mounted back-to-back which can be manually set and secured into a desired curved configuration. The elongated flexible track members are parallel and adjacent to each other with conductors positioned in channels on the lateral faces of the flexible track, capable of engaging one or more light fixtures. Each track member can slide relative to the other creating a mechanism that allows for large or small diameter curves of the flexible track.

Abstract: Battery operated sconces, battery operated chandeliers, battery operated candles and candles with unique shapes are disclosed.

Abstract: Lighting systems and methods are described, including track lighting systems and methods.

Abstract: A light fixture for fixing to a building or building surface has a trough-shaped reflector having first and second side walls forming a light outlet and a reflective inner surface, each of the side walls having a planar section. A diffuser is mounted on the outlet. A plurality of LED's of different colors on the planar sections are positioned such that a predominant portion of the light emitted by the LED's on one of the side walls only reaches the diffuser element after reflection off the other side wall.

Abstract: A system and method for the display of solar-powered light fixtures in a commercial setting is disclosed in the instant application. The solar-powered light fixture is contained within a box which minimizes the effect of the ambient light from the light fixtures illuminating the commercial establishment. A window is constructed in the box to permit a potential buyer to observe the operation of the solar light fixture. When ready to observe the operation of the solar light fixture, the potential buyer pushes a button which activates an electrical circuit, causing the solar light fixture to emit light.

Abstract: A lighting apparatus (10) is described for incorporation into a tiled wall, panel, ceiling, floor or similar structure (38,40). The apparatus comprises: a reflector unit (12, 14) that has at least one reflective surface (24, 26) for location behind the surface of the structure and an external light-transmissive face (14) for location generally flush with the surface of the structure; and means (28) for coupling an end of a fiber-optic cable (32) having a multiplicity of optical fibers (34) to the reflector unit behind the surface of the structure so that light projecting from the ends of the fibers enters the reflector unit and is reflected by the reflective surface(s) so as to provide substantially uniform illumination across the light-transmissive face. The reflector unit is formed with an external flange (20) generally parallel to the light-transmissive face.

Abstract: A compact fluorescent luminaire mountable on a vertical surface is provided, the luminaire including a housing, an aperture formed at an underside of the housing, a lamp disposed within the aperture and oriented to emit light through the aperture to the vertical surface, wherein the lamp comprises first and second tube elements arranged adjacent to one another, the first tube element being proximate to the vertical surface, the second tube element being distal from the vertical surface, a shield element disposed within the aperture adjacent to the lamp and extending longitudinally therewith, where the shield element is configured to intercept first light rays emitted by the first tube element, intercept second light rays emitted by the second tube element, and allow passage of third light rays emitted from the first and second tube elements incident on the vertical surface.

Abstract: The track fixture described has an accessory ring hingedly attached to the main portion of the track fixture luminaire. The hinge interposed between the accessory ring and the support ring or luminaire housing allows for both rotational and outward movement such that the accessory ring may be moved outward and away from the lamp and rotate about the support ring without interference between the accessory ring and the support ring or luminaire housing. The two movement hinge design is compact and allows for a clean outer appearance of the track fixture luminaire.

Abstract: A wall luminaire is described having a housing intended for the reception of the electrical components and having at least one light permeable element mounted to the housing whose special feature consists of the fact that light generated by a plurality of LEDs with an associated optical system or by a fluorescent lamp arrangement is guided in bundled form between two surfaces which are disposed in the sidelight region of the light beam.

Abstract: A linear fixture for suspension from an overhead structure has a light weight and has electrical connectors capable of making easy plug electrical connections for power and network connection communications. The linear fixture is an elongated housing having a bottom wall, an elongated housing top wall and an elongated slot extending longitudinally along the elongated housing top wall. The housing is manufactured from an extrusion of aluminum thereby reducing the weight of the housing. The housing includes two or more housing supports having bottom and top surface portions respectively, conforming in shape to the housing bottom top walls. The bottom of top portions of the supports are adapted to engage or slide fit into the bottom and top walls so as to mate with the walls and provide support to the elongated housing bottom and top walls. The housing supports act to provide additional structural support for the top and bottom walls of the linear housing.

Abstract: The invention provides a lighting fixture for a sloped ceiling comprising an enclosure, an optics assembly situated within the enclosure, and at least one gravity-controlled pendulum with an indicator capable of being used to align the optics assembly. The lighting fixture further comprises a yoke assembly comprising a yoke and a secondary support piece, and at least one connector that guides the movement of the yoke.

Abstract: The present invention is an improved apparatus to very rapidly install a lightbulb socket assembly within the housing of a recessed lighting fixture. Through the present invention, the lightbulb socket assembly is removed from the housing fixture during shipment so that it will not be damaged and when the fixture is ready to be installed, the present invention permits the socket assembly to be very rapidly installed and affixed to the base plate of the lightbulb housing.

Abstract: A glass wall (1) has two parallel wall elements (3), at least one of which consists of a material made of glass or a similar material, which is transparent to light, and behind which LEDs, with which the transparent wall element (3) can be lit translucently, are arranged in rows as illuminating devices. To achieve illumination of the glass wall (1) over the largest possible areas, provisions are made for LED light sources (7) to be arranged in a small number of illuminating groups on plate-like carriers (17) in the area of the front-side end of a narrow, elongated light chamber (6). A plurality of such light chambers are arranged separated by transverse walls (4, 4?, 5) in the vertical position next to each other or in the horizontal position one on top of another to form the glass wall (1). Each light chamber (6) has at least one translucent wall element (3) with an inner surface having a refractive and reflecting structure.

Abstract: Apparatus includes a mounting plate having a hole in a center portion thereof, a recessed light support member having laterally-extending flanges on each of two essentially parallel sides, and a guide disposed on the top surface of the plate, the guide having a longitudinal section offset from the top surface by a distance greater than the thickness of the flanges, where the flanges of the recessed light support member are slidable laterally between the top surface of the plate and the longitudinal section of the guide. A method of servicing a lighting fixture having a can includes sliding the can laterally from a position where the can is centered over the hole to a position where a servicing space is effected between a perimeter of the hole and the can.

Abstract: A recessed light fixture including a base plate mountable in an opening in a room ceiling or wall, with the base plate having a front surface substantially flat and aligned with the ceiling or wall surface when mounted thereon, and a light opening through the base plate wherein the edge of the light opening is a sharp edge with the back surface tapering away from the front surface around the light opening at an angle of less than 45 degrees. A curved dome is adjacent the base plate back surface and centered on the light opening. A ring is mounted to the base plate for selected rotation around the light opening, and a support track between the curved dome and the base plate is secured on its lower end to the ring and curved up and toward the light opening from its lower end. A socket support is mounted for adjustable movement on the support track, and a light socket is mounted to the socket support whereby a lamp in the socket emits light through the light opening.

Abstract: A light assembly is provided for installation in one of an insulation capable (IC) environment and a non-insulation capable (non-IC) environment. The light assembly comprises a light fixture and a label. The light fixture includes a housing having an open end and a wall visible through the open end, the wall defining an aperture having a size sufficient for determining whether insulation is within a predetermined distance of the light fixture. The label includes an indicia signaling a user to use the aperture to make a determination whether insulation is within the predetermined distance of the light fixture and to make a lamp selection based on the determination.

Abstract: An improved efficiency fluorescent lighting system is described. The system utilizes reduced rows of fluorescent luminaires which are spaced much further apart than traditional spacing. The luminaires used in the system of the present invention have increased light output of each luminaire by up to fifty percent through a combination of use of a high efficiency lamp producing about 3250 lumens, an electronic dimming ballast having a ballast factor of about 1.2 and a luminaire having a spacing to mounting height ratio of at least 1.5.