Abstract: A germicidal ultra-violet lamp (UVGI Lamp) fitted with a fluoro-polymer sleeve, sealed on each end and loose over the body of the lamp, thereby providing a thermal barrier for more efficient operation of the lamp in colder temperatures. Specifically, the invention is an insulated germicidal ultra-violet lamp (UVGI Lamp), a thermally insulative and UV transmissive sleeve (such as a fluoro-polymer like PTFE or FEP) of greater diameter than the translucent body disposed coaxially with the translucent body forming an encapsulated space therebetween filled filled with gas, such as ambient surface air. The cathodes can be UVc emitters and can UV light <255 nm. An additional feature of the present invention can be a spacer disposed within said space, wherein the distance between said translucent body and said sleeve is maintained.

Abstract: A lamp assembly (20) includes a ceramic metal halide lamp (22) mounted in a reflector (60) with support assembly (62). First frame portions (64) of the support assembly (which include linear first portions (64a), angled second portions (64b), and offset portions (64c)) are bent approximately ninety degrees at one end and merge into second frame portions (66) that extend parallel to the lamp. The arrangement supports the light source in the PAR lamp in a transverse manner. In a second embodiment, the frame portions (62?) extend along either side of the light source to accurately position the light source relative to the reflector.

Abstract: Large increases in field emission current can be achieved when operating carbon nanotubes in substantial pressures of hydrogen, especially when the nanotubes were contaminated. Integrally gated carbon nanotube field emitter arrays were operated without special pre-cleaning in 10?6 Torr or greater of hydrogen to produce orders of magnitude enhancement in emission. For a cNTFEA intentionally degraded by oxygen, the operation in hydrogen resulted in a 340-fold recovery in emission.

Abstract: An object is to provide an electron emission cathode and an electron emission source using diamond and having a high brightness and a small energy width that are suitable for electron ray and electron beam devices and vacuum tubes, in particular, electron microscopes and electron beam exposure devices, and also electronic devices using such cathode and source. A diamond electron emission cathode according to the present invention has single crystal diamond in at least part thereof, the diamond electron emission cathode having a columnar shape formed by a sharpened acute section and a heating section, being provided with one electron emitting portion in the sharpened acute section, and being constituted of at least two types of semiconductors that differ in electric properties.

Abstract: A gas-filled discharge gap includes at least two electrodes and an electrode-activation mass that is arranged on at least one of the electrodes. The electrode-activation mass contains K2WO4.

Abstract: A display device (12) has a display screen, the display screen comprising a plurality of gas discharge tubes (20R, 20G, 20B, . . . 28R, 28G, 28B) disposed side by side. Each of the gas discharge tubes includes a phosphor layer (4) formed therein and also includes a discharge gas contained therein. Each gas discharge tube has a plurality of light-emitting points. Each of the plurality of gas discharge tubes (20R, 20G, 20B, . . . 28R, 28G, 28B) is curved along the longitudinal direction thereof. The display screen is formed by combining the plurality of gas discharge tubes having different magnitudes of curvature.

Abstract: A plasma display panel including a discharge gas for generating ultraviolet light as a result of electric discharge, and a phosphor layer containing a phosphor for emitting light upon excitation by ultraviolet light is provided. The phosphor contains a novel Eu-activated silicate phosphor represented by (CaxM11-x)3-e.M2.Si2O8: Eue. In the formula, M1 is at least one element selected from the group consisting of Sr and Ba; M2 is at least one element selected from the group consisting of Mg and Zn; x is the mole fraction of the component Ca satisfying the condition of 0<x?0.2, and e is the mole fraction of Eu satisfying the condition of 0.001?e?0.2.

Abstract: There is disclosed a green phosphor that is adaptive for improving its driving voltage and brightness characteristic, and at the same time, improving its color purity. A green phosphor according to an embodiment of the present invention includes a mixed phosphor composed of a first class phosphor of Zn2SiO4:Mn, a second class phosphor of at least one of LaPO4:Tb, Y3Al3(BO3)4Tb, Y(Al, Ga)5012:Tb, YBO3:Tb, (Y, Gd)BO3:Tb, and a third class phosphor of at least one of BaAl12O19:Mn, BaAl14O23:Mn, Ba(Sr, Ma)AlO:Mn, and the mixing rate of the third class phosphor to the total weight of the mixed phosphor is 1˜25 wt %.

Abstract: Example embodiments relate to a plasma display panel and a method of forming the same, having a first substrate, a second substrate, a barrier rib interposed between the first substrate and the second substrate, a plurality of grooves formed in the second substrate so as to define discharge cells, a barrier rib electrode including a discharge portion located within the barrier rib to perform a discharge, a contact portion exposed from a surface of the barrier rib, and an intermediate portion connecting the discharge portion and the contact portion, and a terminal electrode on at least one of the first and second substrates such that one end of the terminal electrode may be electrically connected to a signal transmission element and other end thereof may be electrically connected to the contact portion of the barrier rib electrode.

Abstract: An electron emission device includes first and second substrates facing each other, an electron emission unit provided on a first surface of the first substrate, a light emission unit provided on a first surface of the second substrate facing the first substrate, and a sealing member for sealing peripheries of the first and second substrates together. The sealing member contacts a first insulation layer of the electron emission unit.

Abstract: The discharge between the electron source and the anode is prevented, thus providing a highly reliable image display device. The data signal lines d and the scanning signal lines formed via an insulating layer INS are provided on the inside surface of the rear substrate SUB1, and further the electron sources ELS are formed at intersections between the data signal lines d and the scanning signal lines s. Discharge preventing members SSB are disposed on the scanning signal lines s. The discharge preventing members SSB have conductive layers ECL on an upper surface of an insulating core member MBD made preferably of glass, and is fixed in a lower surface thereof to the scanning signal lines s with an adhesive FGL such as frit glass. The width of the discharge preventing member SSB is arranged to be greater than the width of the scanning signal line s, and the dimensions are arranged so that the discharge preventing member SSB covers the scanning signal line s when viewed from the anode.

Abstract: In an image display device which forms an image by allowing electrons from electron sources which are arranged in a matrix array to impinge on phosphors in the inside of a vacuum envelope, the degree of vacuum during an operation of the image display device is improved. A vacuum envelope is formed of a face substrate, a back substrate and a support body which is arranged between and along peripheries of the face substrate and the back substrate using a sealing material. By using frit glass which contains vanadium oxide as a main component for a material of the sealing material, due to a getter action of frit glass which contains vanadium oxide as the main component, after vacuum evacuation, a lifetime of the display device can be prolonged. Further, by using frit glass which contains vanadium oxide as the main component for a material of an adhesive material which bonds the spacers and the face substrate or bonds the spacers and the back glass, the getter action can be further enhanced.

Abstract: A light source, includes an LED emitter and a meniscus lens having a hollow cavity in which the LED emitter is disposed. The meniscus lens is in exemplary embodiments hyperhemispheric, and it produces a high quality optical image of the LED emitter. The cavity of the lens is filled with air, such as terrestrial atmosphere, inert gas, or vacuum.

Abstract: A white fluorescent lamp is prepared with a substrate and a high voltage circuit. The substrate has a fluorescent layer with silicon quantum dots. The lamp generates a white light by exciting the substrate with the circuit through a spark gap. A photoelectronic conversion is improved and a cost is lowered by using a cheap material as silicon.

Abstract: An electroluminescent device having a phosphor layer including a phosphor material and a pair of electrodes for applying a voltage to the foregoing phosphor layer wherein an acetylacetonato complex salt is included in the phosphor layer to realize an electroluminescent device with high luminance. Further, the EL device realizes an electroluminescent device with higher luminance by constructing the foregoing phosphor layer so as to contain acetylacetonato complex salt, in which ligands coordinate with a trivalent metal atom, particularly a metal atom of Group III or Group XIII as the foregoing acetylacetonato complex salt.

Abstract: A top emission, organic light emitting diode display comprises an organic light emitting diode (OLED), a first substrate having an inner surface, and a second substrate having an inner surface, wherein the OLED is sandwiched between the first substrate and the second substrate. At least one of the first substrate and the second substrate includes a pocket formed in the inner surface thereof having a depth such that a distance between the inner surface of the first substrate and the inner surface of the second substrate sufficient to reduce or eliminate the formation of optical distortions such as Newton rings in the display. Other embodiments of the display comprise a frit located between the first and second substrates having a thickness such that the distance between the inner surfaces of the first and second substrates is great enough to prevent the formation of Newton rings.

Abstract: In order to improve the decoupling efficiency in a top-emitting OLED a top-emitting electroluminescent component (100) is suggested comprising a substrate, a first electrode (120) nearest to the substrate, a second electrode (14) located at a distance from the substrate, and at least one light-emitting organic layer (130) arranged between both electrodes, the emitted light being transmitted through the second electrode. The component in accordance with the invention is distinguished by an additional layer (150) facing away from the at least one organic layer is arranged on the side of the second electrode, which additional layer comprises optically effective light-emitting heterogeneities (151, 152, 153), especially in the form of scatter centers, the degree of transmission of the additional layer of the emitted light being greater than 0.6.

Abstract: An organic light-emitting device, including a substrate, an organic light-emitting element on the substrate, a sealing member on the organic light-emitting element, a ¼ wavelength layer on one surface of the substrate, the organic light-emitting element, or the sealing member, and a linear polarization layer on one surface of the substrate, the organic light-emitting element, the sealing member, or the ¼ wavelength layer, the linear polarization layer being closer to an image display surface than the ¼ wavelength layer.

Abstract: Provided herein are fluorene-based compounds including a fluorene or a spirofluorene structure at both terminals and a spacer including one or more atoms between the both terminals. The invention further provides an organo-electroluminescent device having an organic layer in which the fluorene-based compound is introduced. The fluorene-based compound can be readily manufactured using dry and wet processes, and the organo-electroluminescent device using the same has excellent properties in color purity, internal and external efficiency, and thermal, optical and electrical stability.

Abstract: An organic light emitting device includes a plurality of colored pixels, and a white pixel, wherein the respective pixels include; a first electrode, a second electrode which faces the first electrode, and a light emitting member disposed between the first electrode and the second electrode, and the white pixel further includes; a first semi-transparent member disposed on the first electrode to form a microcavity with the second electrode.

Abstract: An organic light emitting diode is provided. The organic light emitting diode includes a substrate, an anode electrode structure formed on the substrate and including at least a metal layer and a metal oxide layer, an organic layer formed on the anode electrode structure and a cathode electrode structure formed on the organic layer.

Abstract: Disclosed herein is a method for manufacturing a display, the method including the steps of: disposing a substrate over which a plurality of lower electrodes and a plurality of auxiliary electrodes are formed and a donor film over which a light-emitting functional layer is formed so that the light-emitting functional layer contacts with the lower electrodes and does not contact with the auxiliary electrodes; irradiating the donor film with an energy beam to selectively transfer the light-emitting functional layer onto the lower electrodes; and forming an upper electrode that covers the light-emitting functional layer and the auxiliary electrodes.

Abstract: Aspects of the invention can provide a lamp device that is capable of avoiding concentration of stresses in a sub-mirror fixing portion of an arc tube. The lamp device can include an arc tube provided with a bulb portion encapsulating inside a pair of electrodes, and a pair of sealing portions formed continuously from the bulb portion and sealing inside electrode axes having the electrodes at tip ends and conductor foils to bring the electrode axes into conduction, a main reflection mirror, to which the sealing portion is fixed, to reflect lights emitted from the arc tube toward an illuminated region, and a sub-mirror fixed to the sealing portion in such a manner that a reflection surface opposes the main reflection mirror with the bulb portion in between. The sub-mirror can be bonded with a bonding agent to a surface region of the sealing portion present in a direction moving away from the bulb portion in reference to a position corresponding to a termination of the electrode axis.

Abstract: A plasma display panel is provided. The plasma display panel comprises a plurality of first electrodes and a plurality of second electrodes; wherein the first electrodes and the second electrodes cross at a discharge space; wherein prominent electrodes and formed at a portion o the first electrodes where the firs electrodes cross with the second electrodes to extend the area of the address electrodes so that a stable address discharge may occur, and vertical centers of the prominent electrodes are asymmetrical with respect to vertical centers of the discharge spaces, which may be coated with red, green and blue fluorescent layers.

Abstract: The invention concerns a method for generating a cold plasma for sterilizing a gaseous medium and a device therefor. The inventive device comprises a confinement chamber (1) including at least one treatment chamber (40), means (4) for generating a first uniform magnetic field (B1), means (5) for generating a second uniform magnetic field (B32), means (6, 7) for emitting an electromagnetic signal (EM1), means (9, 10) for generating one or several second electromagnetic fields (E2) in the plasma and a powering system (14) controlling the value of the first and second magnetic fields (B1, B2) and the frequency and the amplitude of the alternating current voltages (V6, V7).

Abstract: A coin shaped light-emitting device is disclosed and includes a light-emitting member formed by encapsulating and wiring a plurality of LEDs on a thin substrate, a constant current controller for operating the light-emitting member in constant current and causing the light-emitting member to emit bright light, and a shell for enclosing the light. A water-resistant arrangement is further incorporated into the light-emitting device. A coin shaped spotlight is further disclosed and is formed by connecting a plurality of light-emitting devices in series, in parallel, or in another configuration. The spotlight has advantages of increased reliability, energy saving, and prolonged useful life.

Abstract: A driver apparatus is provided for controlling a light source array comprising at least first and second light sources, the light source array used for illuminating a scan region on a target object, wherein light reflected from said target object is captured by a detector. The driver apparatus comprises a single integrated circuit comprising processing means for processing image data received from the detector, a switching array comprising at least first and second switches for switching the respective first and second light sources, and a current source for controlling the flow of current through the light sources. In this way the LED switching circuitry that controls an LED array is placed on the same integrated circuit (i.e. monolithic circuit) as the analogue processing circuitry that processes the image data, with the current source controlling the flow of current through the LEDs in the LED array.

Abstract: The present invention discloses a natural light-generating device, wherein a light-sensing unit is used to detect the surrounding lighting signals, and a modulated control unit transforms the lighting signals into control signals, and an ultra-low frequency sinusoidal-wave generator performs the permutation and combination of the control signals to sequentially generate driving signals of different timings, frequencies and amplitudes; the driving signals control light-generating elements to simulate the delicate and leisurely variation of the diversified natural daylight; thereby, the windows of the soul can enjoy the gentle and mellow lighting similar to natural daylight; thus, the eyes is massaged, the body and mind relaxed, the health improved, and ocular diseases prevented.

Abstract: Provided are a dielectric element and an electron emitter exhibiting suppressed deterioration of element characteristics, which deterioration would otherwise occur with repeated use thereof. An electron emitter (i.e., a dielectric element) of the present invention is configured so as to operate through application of a predetermined driving electric field to an emitter layer. The emitter layer is formed of a dielectric layer containing, as a primary component, a PMN-PT-PZ ternary solid solution composition, and having a Curie temperature Tc (° C.) falling within a range of 60?Tc?150.

Abstract: A field emission device (100) is provided for reducing power and audible noise during discharging of dielectric surfaces (137, 138). The field emission device (100) comprises an anode (122) and a first substrate (111) including a cathode plate (110) comprising a plurality of active display devices (114) and dielectric surfaces (137, 138). The plurality of active display devices (114) emit electrons (132) to strike the anode during a scanning mode, and emit electrons (135) to strike the dielectric surfaces (137, 138) during a discharge mode. At least one of a plurality of spacers (136) positioned between the anode (122) and the cathode plate (110) comprise a first sense electrode (142) positioned proximate to the anode (122), and a second sense electrode (144) positioned proximate to the cathode plate (110) and spaced apart from the first sense electrode (142).

Abstract: An organic light emitting diode (OLED) display including a first electrode formed on a substrate, a second electrode facing the first electrode, first light emitting members disposed between the first electrode and the second electrode and emitting light included in a visible spectrum, and second light emitting members being in contact with the first light emitting members and emitting light having a wavelength. The wavelength is in a range of about 600 nm to about 2500 nm.

Abstract: A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including a scan electrode, a sustain electrode, and an address electrode to intersect the scan electrode and the sustain electrode, an integrated driver for supplying the scan electrode or the sustain electrode with a sustain voltage, a data driver for supplying the address electrode with a data voltage, a first ground unit for grounding the integrated driver and the sustain electrode, a second ground unit for grounding the data driver, and a ground controller for controlling the first ground unit and the second ground unit to be electrically separated from each other for a predetermined period in at least one of a reset period and an address period of a subfield.

Abstract: An LED backlighting system including: a control circuit; a power source; at least one LED string associated with the power source, the at least one LED string being arranged to be switchably connected to alternatively draw an illumination current from the power source and not draw an illumination current from the power source; and a controlled bleeder arranged to draw a bleed current from the power source responsive to the control circuit; the control circuit being operative to draw the bleed current from the power source via the controlled bleeder for a predetermined time period associated with the alternatively drawing and not drawing the illumination current of the at least one LED string.

Abstract: The present invention, according to a preferred embodiment, is directed to portable electronic devices which operate on exhaustible power sources, for example, batteries. The electronic devices of the present invention comprise at least one signal switch and a microchip in communication with the switch wherein the switch is only capable of transmitting a signal to the microchip that the switch has been activated or deactivated. The microchip is in communication with the exhaustible power source of the electronic device and controls (i) the power on/off function of the device, (ii) at least one other function of the device in response to activation and deactivation signals from the switch, and (iii) an automatic shut off function in response to the receipt of an activation signal from the switch.

Abstract: A discharge lamp lighting circuit includes a power supplying portion having a series resonant circuit containing transistors and a bridge driver, and a control portion for generating a control signal Sc1 to control a driving frequency of the bridge driver. The control portion has a sample hold portion for generating a constant control signal S1, a frequency follow-up control portion for generating a control signal S2 in such a manner that a phase difference between a voltage and a current in the series resonant circuit is approximately zero, and a power control portion for generating a control signal S3 in such a manner that a magnitude of an AC power approximates a steady value. The control signal S1 is selected from a time t3 to a time t4, the control signal S2 is selected from the time t4 to a time t5, and the control signal S3 sent from the power control portion 13 is selected as the control signal Sc1 after the time t5.

Abstract: The present invention discloses a method and an apparatus for dimming a hot cathode fluorescent lamp (HCFL) that combines frequency conversion and pulse width modulation (PWM) to change the outputted voltage and current of a piezoelectric transformer, so as to achieve the purpose of adjusting the brightness of a cathode fluorescent lamp. The invention can substitute a starter and a voltage regulator of a hot cathode fluorescent lamp without the need of installing a ballast that produces high heat during its operation easily, and extend the life expectancy of the fluorescent lamp, reduces the number components of the fluorescent lamp, and provides a quick start of the lamp.

Abstract: A ballast for a projector high-intensity discharge (HID) lamp includes an electrical connector and an inductor-inductor-capacitor (LLC) resonant converter. The electrical connector is receptive to electrical coupling with the projector HID lamp. The LLC resonant converter is to convert and transmit power received from a power source to the projector HID lamp via the electrical connector.

Abstract: A ballast for a projector high-intensity discharge (HID) lamp includes a resonant converter and an auxiliary resonant circuit. The resonant converter is to convert and transmit power received from a power source to the projector HID lamp. The auxiliary resonant circuit is to selectively boost the power transmitted to the projector HID lamp.

Abstract: A light fitting is provided with a first connector piece arranged to support a light and provide power thereto, an input connected to a power source and arranged to provide power permanently to an output comprising a primary coil, and a transmitter operable to transmit a switch signal. A light is provided comprising a sealed light housing, a light source, a back-up battery, a controller and a second connector piece having a secondary coil and a receiver. The receiver receives the switch signal and the controller controls power delivery to the light source in response to the switch signal received by the receiver thereby to turn the light on and off. The light fitting and the light are arranged to present the primary coil and the secondary coil for inductive coupling therebetween and to present the transmitter and the receiver for wireless communication therebetween.

Abstract: A transformer for driving multi-lamps and a backlight module thereof are provided. The transformer comprises a primary winding, a secondary winding, a core, a first bobbin and a second bobbin. The primary winding comprises a primary coil. The secondary winding comprises a secondary coil and a plurality of auxiliary coils whose turns are substantially equal. The core has a first side and a second side. The first bobbin and the second bobbin are respectively disposed on the first side and the second side for winding around the primary coil, the secondary coil and the auxiliary coils.

Abstract: An electronic ballast comprising a pulse width modulation (PWM) unit and a power-converting unit is provided. The PWM unit is used for generating a PWM signal to the power-converting unit so that the power-converting unit can generate a driving signal to drive and light up the fluorescent lamp according to the PWM signal. Specially, the duty cycle of the PWM signal is varied with time in a pre-heating period of the fluorescent lamp. In addition, the present invention further includes a detecting module for detecting a working voltage and a working current of the fluorescent lamp to determine whether the fluorescent lamp works normally. When the fluorescent lamp cannot work normally, the PWM signal generated by the PWM unit is disabled through the detecting module.

Abstract: The present invention provides a pulse-width modulation (PWM) method and apparatus, and light source driven thereby. In particular, the present invention provides a PWM method and apparatus for generating a PWM signal having a desired resolution and frequency using generating means traditionally limited to providing PWM signals having a lower resolution and/or frequency. The PWM method and apparatus of the present invention may be used in a number of applications where a relatively high PWM resolution and/or frequency is desired, but where selection of generating means for generating such PWM signals is relatively limited by cost and/or other such constraints. For example, a PWM signal generated by the method and apparatus of the present invention may be useful in accurately controlling the output of the one or more light-emitting elements of a light source, namely to control a dimming and/or colour level thereof, without using driving components that may be relatively costly for the application at hand.

Abstract: A light source device, including: a high pressure discharge lamp in which an electric discharge is generated between a pair of electrodes; a lighting device that supplies drive current having a predetermined frequency to the high pressure discharge lamp to light and drive the high pressure discharge lamp; and a control device that controllably drives the lighting device, the control device including: a power-change controller that controls drive power supplied from the lighting device to the high pressure discharge lamp to be changeable at least between a first power and a second power lower than the first power; and a frequency-change controller that controls a frequency of the drive current supplied from the lighting device to the high pressure discharge lamp to be changeable, in a second power drive mode in which the second power is supplied to the high pressure discharge lamp by the power-change controller, the frequency-change controller changing the frequency of the drive power to a frequency higher tha

Abstract: A lamp lighting system allows dimming of a compact gas discharge lamp to a low light output level without perceptible flicker. When the system receives a request to dim the lamp to the low level, the lamp is operated at an intermediate output level prior to operating the lamp at the requested low level. When the lamp cools to below a threshold temperature, the lamp is then operated at the requested low level. In one embodiment, the lamp is dimmed from its full rated output level to 1% of its full rated output level. The intermediate level is approximately 2% to 5% of this full rated level. No flicker is perceived when the lamp level is reduced from the full rated level to the intermediate level. Upon cooling, no flicker and no change in output level are perceived when the lamp is subsequently reduced from the intermediate level to the low level.

Abstract: A method of applying realtime effects to at least one lighting channel (15) for a lighting fixture or luminaire (11) is disclosed. The method includes the steps of providing a common control means interface (12) which controls the different realtime effects (13/14) to be applied to the one or more lighting channels. The realtime effects include those selected from amongst the following effects: Intensity, Position, Color, Gobo (Pattern) Beam or other controllable attribute of an automated lighting fixture. The method of applying realtime effects making up the combined effect under realtime control is such that each included effects feature of all fixtures is coordinated by a corresponding effects master controller (13/145) for that effect.

Abstract: A discharge lamp lighting apparatus comprising a d.c. power source section which rectifies and smoothes an a.c. voltage; a current detecting circuit which detects a current which flows through a discharge lamp; a power source ripple detecting circuit which detects a voltage change of power supplied from the d.c, power source section and outputs a voltage obtained by superimposing the detected voltage over a detected voltage which is available from the current detecting circuit; and a control circuit which controls, based on) the output voltage from the power source ripple detecting circuit, an output voltage to the discharge lamp so that the current flowing through the discharge lamp becomes a constant current. A rate of superimposition of the output voltage from the power source ripple detecting circuit may be switched in accordance with the discharge lamp voltage.

Abstract: A method for controlling electrical light sources, in particular, light-emitting diodes (LEDs) by pulse width modulation of a supply voltage is disclosed, whereby the supply voltage or a parameter dependent thereon, for example the current or the electrical power, is measured and the pulse width is controlled as a function thereof. According to the invention, for the light source a characteristic curve for the brightness is generated as a function of the supply voltage or the parameter dependent thereon and, from the measured supply voltage or the parameter dependent thereon, an actual brightness value is determined with the characteristic curve and is compared with a given brightness value and the pulse width controlled as a function thereof.

Abstract: A system (100) for current and/or temperature control of light fixtures includes a sensor (110) structured to be in communication with a light fixture (150), sense a current flow or a temperature of the light fixture (150), and communicate an input signal relative to the current flow or the temperature; a variable switch (120) structured to be in communication with the light fixture (150) and regulate the current flow of the light fixture (150) in response to a control signal; and a controller (130) in communication with the sensor (110) and the variable switch (120) and structured to monitor the input signal communicated by the sensor (110), compare the input signal to a condition, and communicate the control signal to the variable switch (120) to control its operation. A method for current and/or temperature control of light fixtures includes providing the system (100), monitoring the current flow or the temperature of the light fixture (150); and regulating the current flow of the light fixture (150).

Abstract: A power supply apparatus (100) supplies a power to a plurality of fluorescent lamps (110). An AC power supply unit (20) supplies a common AC voltage Vac to the fluorescent lamps (110a to 110e). A plurality of coils (10a to 10e) are disposed on respective current paths for the plurality of fluorescent lamps (110a to 110e). A core (12) is formed in a closed loop, and the plurality of coils (10a to 10e) are wound around the core (12) as a winding axis in the same direction.

Abstract: The present invention relates to control of a power supply for a lamps circuit. More particularly, the invention provides a power-saving voltage controller intended for fluorescent and incandescent lamps and is particularly useful for controlling high-intensity discharge (HID) lamps. The invention comprising a multi-mode switch-based AC voltage regulator with feedback, the voltage regulator providing full power for lamp start up and reduced voltage for normal operation and a programmed electronic controller operatively connected to all control switches and measurement devices.