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91results about How to "Extend lamp life" patented technology
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Energy saving extra-low voltage dimmer and security lighting system wherein fixture control is local to the illuminated area
InactiveUS20110062888A1Maximum brightnessProtection from damagePlanar light sourcesMechanical apparatusLed driverControl system
Prior applications disclosed power supply transmission voltage resulting in reduced line losses, with further energy conservation via luminous intensity control (dimming) of lamp(s) including LEDs. Additionally, an invertible, convertable luminaire, and upgraded control module design (comparable to a computer mainframe) comprised of function components including, for example, a microcontroller with programmable CPU, multiple LED driver(s), multiple independent lamp control(s), variable ON time segmentation(s) and variable ramp speed(s), voice actuation (s), security system(s), battery charge component(s), voltage drop (current) limiter(s), protection, ammeter(s), volt and watt meter(s); and voids for optional modules including but not limited to: clock timer(s); photocell(s); motion detector(s) of various function(s); push button(s); programming and function display(s); microphone(s); wireless transmitter(s) / receiver(s); fiber optic interconnection(s); remote control(s); integration to personal computer(s) or other central control system(s); speaker(s); camera(s); irrigation control(s); luminaire mountable laser module(s) and beacon(s); battery array(s); transmission voltage double isolation for nominal 15 volt maximum wet contact.
Owner:BONDY MONTGOMERY C +3
Multiple channel ballast and networkable topology and system including power line carrier applications
InactiveUS7009348B2Efficient qualityExtend lamp lifeAnalogue/digital conversionElectric light circuit arrangementLoop controlElectric power system
Control systems and methods for independent control of power systems, particularly lighting network branches, and separate control of individual branch components. Multi-branch systems comprise independently controllable branches that inter-communicate via PLC communications. In each branch, components such as ballasts, local control units, sensors, actuators, and repeaters, may exchange commands and queries independently of a branch remote control unit (BRCU). Alternatively, a BRCU may manage or arbitrate communications, or interact with other BRCUs, other control units and external management systems. Ballasts include a multi-channel ballast that enables close-loop control of individual fixtures, or of individual dimmable or non-dimmable lamps within a fixture. The close-loop control is facilitated by sampling circuits / sensors co-located with each controlled fixture or lamp. All controllers are preferably implemented using an integrated digital controller. The PLC communication is preferably carried out by a direct spread spectrum method that eliminates side lobes from a cross-correlation function, using an anti-collision protocol.
Owner:S T L ENERGY SOLUTIONS & TECH
Optical and temperature feedbacks to control display brightness
ActiveUS7183727B2Extend lamp lifeReduce the required powerElectrical apparatusStatic indicating devicesControl powerFeedback control
An illumination control circuit allows a user to set a desired brightness level and maintains the desired brightness level over temperature and life of a light source. The illumination control circuit uses a dual feedback loop with both optical and thermal feedbacks. The optical feedback loop controls power to the light source during normal operations. The thermal feedback loop overrides the optical feedback loop when the temperature of the light source becomes excessive.
Owner:POLARIS POWERLED TECH LLC
High power led lamp
InactiveUS6346771B1Improve uniformityReduce chip sizeDischarge tube luminescnet screensLamp detailsEngineeringLED lamp
A high-power LED lamp uses an LED chip that can be larger than 1mm square. The chip has trenches that can convert light trapped in the semiconductor into light that passes through a major surface of the chip. The trenches include light-reflecting tracks joined to a chip terminal and feeding a semiconductor layer. The chip can have triangular light emitting elements that improve light extraction from the semiconductor. The elements can be fused, resulting in improved manufacture yield of chips. A 25 watt single chip lamp with a heat sink very close to the active region is described.
Owner:EPISTAR CORP
Optical and temperature feedbacks to control display brightness
ActiveUS20050088102A1Extend lamp lifeReduce the required powerElectrical apparatusStatic indicating devicesControl powerControl circuit
An illumination control circuit allows a user to set a desired brightness level and maintains the desired brightness level over temperature and life of a light source. The illumination control circuit uses a dual feedback loop with both optical and thermal feedbacks. The optical feedback loop controls power to the light source during normal operations. The thermal feedback loop overrides the optical feedback loop when the temperature of the light source becomes excessive.
Owner:POLARIS POWERLED TECH LLC
Electrical adapter for medical diagnostic instruments using replaceable LEDs as illumination sources
InactiveUS20070219417A1Extend lamp lifeReduce maintenanceBronchoscopesLaryngoscopesMedical treatmentInstrumentation
An LED for use with a medical diagnostic instrument having an adapter disposed between an instrument head and a hand-grippable handle, the LED being removably attachable in relation to the adapter in order to permit selective replacement of the LED, as needed. The LED is situated in order to provide mechanical and electrical interface with at least one of the adapter and the instrument, thereby enabling the adapter and the LED to convert the illumination source of the instrument selectively between an incandescent light source and the LED. The adapter matches a polarity between the LED and a power supply that is specifically intended for powering an incandescent light source.
Owner:WELCH ALLYN INC
LED retrofit lamp with shunt capacitors across rectifier diodes for use with a ballast
ActiveUS20150351171A1Extend lamp lifeSave energyElectrical apparatusElectric circuit arrangementsShunt capacitorsRectifier diodes
The invention relates to LED replacement lamp suitable for operation with a high frequency fluorescent lamp ballast, comprising—a LED load (LS) comprising a series arrangement of LEDs,—a first lamp end circuit comprising—a first lamp pin (LP1) and a second lamp pin (LP2) for connection to a first lamp connection terminal comprised in the high frequency fluorescent lamp ballast,—a first rectifier (D1-D4; D1,D2) equipped with at least one input terminal coupled to the second lamp pin and with first and second output terminals coupled to respective ends of the LED load, the first rectifier comprising at least two diodes, one of which is shunted by a first capacitor (C1),—a second lamp end circuit comprising—a third lamp pin (LP3) and a fourth lamp pin (LP4) for connection to a second lamp connection terminal comprised in the high frequency fluorescent lamp ballast,—a second rectifier (D5-D8, D5, D6) equipped with at least one input terminal coupled to the fourth lamp pin and with first and second output terminals coupled to respective ends of the LED load, the second rectifier comprising at least two diodes, one of which is shunted by a second capacitor (C2), wherein the first capacitor and the second capacitor form a series arrangement coupled between the second lamp pin and the fourth lamp pin.
Owner:SIGNIFY HLDG BV
Method for optimizing inspection speed in low, and fluorescent light applications without sacrificing signal to noise ratio, resolution, or focus quality
InactiveUS7015445B2Extend lamp lifeReduction in illumination intensityColor television detailsOptically investigating flaws/contaminationSignal-to-noise ratio (imaging)High numerical aperture
The method for optimizing inspection speed during optical inspection of parts in high, low and fluorescent light applications. There are described autofocus mechanisms and methods optimized for fluorescent and non-fluorescent applications that when combined with a high speed CCD camera and high numerical aperture (NA) optics, achieve superior signal to noise ratio, resolution, and inspection speed performance.
Owner:BELTRONICS
High throughput multi-wafer epitaxial reactor
ActiveUS20100263587A1Improving deposit uniformityImprove throughputAfter-treatment apparatusPolycrystalline material growthWaferingReactor system
An epitaxial reactor enabling simultaneous deposition of thin films on a multiplicity of wafers is disclosed. During deposition, a number of wafers are contained within a wafer sleeve comprising a number of wafer carrier plates spaced closely apart to minimize the process volume. Process gases flow preferentially into the interior volume of the wafer sleeve, which is heated by one or more lamp modules. Purge gases flow outside the wafer sleeve within a reactor chamber to minimize deposition on the walls of the chamber. In addition, sequencing of the illumination of the individual lamps in the lamp module may further improve the linearity of variation in deposition rates within the wafer sleeve. To improve uniformity, the direction of process gas flow may be varied in a cross-flow configuration. Combining lamp sequencing with cross-flow processing in a multiple reactor system enables high throughput deposition with good film uniformities and efficient use of process gases.
Owner:SVAGOS TECHNICK INC
High power led lamp
InactiveUS20020063521A1Improve uniformityReduce chip sizeDischarge tube luminescnet screensLamp detailsEngineeringSingle chip
A high-power LED lamp uses an LED chip that can be larger than 1 mm square. The chip has trenches that can convert light trapped in the semiconductor into light that passes through a major surface of the chip. The trenches include light-reflecting tracks joined to a chip terminal and feeding a semiconductor layer. The chip can have triangular light emitting elements that improve light extraction from the semiconductor. The elements can be fused, resulting in improved manufacture yield of chips. A 25 watt single chip lamp with a heat sink very close to the active region is described.
Owner:EPISTAR CORP
Telescoping reading light
InactiveUS20060072328A1Promoting long-term readingLimited eye strainMechanical apparatusDomestic lightingLight-emitting diodePhysics
A portable reading light has a telescoping arm that is slidable within a housing, the arm having a light source at the end thereof which has one or more light emitting diodes which provide bright light, low power consumption and durability. The light emitting diodes preferably are located in an articulatable light support and disposed adjacent to a focusing lens to better direct and shape the light onto a surface. The arm is mounted to a base assembly slidable within the housing and being telescopically expandable for stabilizing the arm when set for use.
Owner:SUNRICH MANUFACTORY
Ceramic metal halide lamp
InactiveUS6731068B2Extend lamp lifeHigh-pressure discharge lampsSolid cathode detailsRare-earth elementAlkaline earth metal
A metal halide lamp comprised of a ceramic discharge chamber containing an ionizable fill, said fill comprising Hg, and halides (H) of Na, TI, an alkaline earth metal, and 0>rare earth element (Re)<15 as a molar fraction.
Owner:GENERAL ELECTRIC CO
Telescoping reading light
InactiveUS7309137B2Extend lamp lifeExtend battery lifeMechanical apparatusDomestic lightingLight-emitting diodeLight source
A portable reading light has a telescoping arm that is slidable within a housing, the arm having a light source at the end thereof which has one or more light emitting diodes which provide bright light, low power consumption and durability. The light emitting diodes preferably are located in an articulatable light support and disposed adjacent to a focusing lens to better direct and shape the light onto a surface. The arm is mounted to a base assembly slidable within the housing and being telescopically expandable for stabilizing the arm when set for use.
Owner:SUNRICH MANUFACTORY
Microcontrolled ballast compatible with different types of gas discharge lamps and associated methods
InactiveUS6501235B2Extend lamp lifeProlong lifeElectrical apparatusElectric light circuit arrangementGas-discharge lampControl circuit
A ballast compatible with different types of gas discharge lamps includes a power supply and a controller connected to the power supply. The controller includes a memory having a plurality of desired operating parameters stored therein for respective different types of gas discharge lamps. A sensing circuit causes the power supply to supply a current to the gas discharge lamp prior to start-up and senses a voltage based thereon indicative of a type of the gas discharge lamp. A control circuit causes the power supply to provide the desired operating parameters based upon the type of gas discharge lamp. Since the desired operating parameters are applied to the gas discharge lamp, the life of the lamp is increased.
Owner:STMICROELECTRONICS SRL
High Throughput Multi-Wafer Epitaxial Reactor
ActiveUS20100215872A1Improve throughputSimple designPolycrystalline material growthSemiconductor/solid-state device manufacturingReactor systemProcess engineering
An epitaxial reactor enabling simultaneous deposition of thin films on a multiplicity of wafers is disclosed. During deposition, a number of wafers are contained within a wafer sleeve comprising a number of wafer carrier plates spaced closely apart to minimize the process volume. Process gases flow preferentially into the interior volume of the wafer sleeve, which is heated by one or more lamp modules. Purge gases flow outside the wafer sleeve within a reactor chamber to minimize wall deposition. In addition, sequencing of the illumination of the individual lamps in the lamp module may further improve the linearity of variation in deposition rates within the wafer sleeve. To improve uniformity, the direction of process gas flow may be varied in a cross-flow configuration. Combining lamp sequencing with cross-flow processing in a multiple reactor system enables high throughput deposition with good film uniformities and efficient use of process gases.
Owner:SVAGOS TECHNICK INC
High power led lamp
InactiveUS6720730B2Improve uniformityReduce chip sizeDischarge tube luminescnet screensLamp detailsEngineeringLED lamp
A high-power LED lamp uses an LED chip that can be larger than 1 mm square. The chip has trenches that can convert light trapped in the semiconductor into light that passes through a major surface of the chip. The trenches include light-reflecting tracks joined to a chip terminal and feeding a semiconductor layer. The chip can have triangular light emitting elements that improve light extraction from the semiconductor. The elements can be fused, resulting in improved manufacture yield of chips. A 25 watt single chip lamp with a heat sink very close to the active region is described.
Owner:EPISTAR CORP
Multiple channel ballast and networkable topology and system including power line carrier applications
InactiveUS20060208661A1Efficient qualityExtend lamp lifeAnalogue/digital conversionElectric signal transmission systemsLoop controlElectric power system
Owner:S T L ENERGY SOLUTIONS & TECH
Temperature sensitive power converter
ActiveUS20070120535A1Avoid damageExtend lamp lifeBatteries circuit arrangementsElectric powerElectricityTemperature curve
The present invention provides a power converter for recreational vehicle (RV) batteries that uses time and ambient temperature to control output voltage. By employing a remote temperature sensor attached to the battery post, temperature information is sent to an output voltage control circuit in the power converter. When the power converter is powered up an internal timing circuit increases the output voltage by a preset amount for a timed period for rapid charging but is also adjusted to predetermined temperature curve controlled by the remote temperature sensor to prevent overcharge. The output voltage is held at the increased value until the internal timing circuit times out and the output voltage is reduced (setback) to the float voltage determined by the remote temperature sensor.
Owner:CONNECTICUT ELECTRIC
Backlight system
InactiveUS7314288B2Extend lamp lifeImprove brightness uniformityStatic indicating devicesElongate light sourcesLiquid-crystal displayPower flow
A backlight system for use with a liquid-crystal display provides longer lamp lifetime through uniform temperature distribution, offers improved brightness uniformity and enhanced power-supply system efficiency, and ensures safety through lowered voltages. Linear lamps (21, 23) are divided into left and right approximately in the middle. The distance that heat travels is therefore shorter than when linear lamps have a length extending throughout the horizontal direction, which enables more uniform temperature distribution on the entire screen and lengthens the lifetime of linear lamps (21, 23). Furthermore, stray current is halved to achieve uniform brightness and enhanced inverter efficiency and safety can be easily ensured through lowered voltages.
Owner:NEC MITSUBISHI ELECTRIC VISUAL SYST
Occupancy sensors programmed to determine loss of lamp life as lamp is used
ActiveUS8111131B2Detailed informationSave energyElectrical apparatusElectric circuit arrangementsEngineeringFluorescent lamp
Programmable occupancy sensors that control the on / off operation of a fluorescent lamp automatically determine loss of lamp life as the lamp is used. The programmable occupancy sensors can provide lamp life status and can automatically alert a user when a lamp is nearing its end of life and should be replaced. The occupancy sensors are also programmable to automatically maximize lamp life and energy savings by selecting an optimal time delay from among a number of selectable time delays at which to operate the sensor. The selection is based on an occupancy pattern sensed by the sensor over a given period of time. The optimal time delay, which prevents the lamp from turning off immediately after last sensing occupancy, extends lamp life by limiting the number of lamp off / on transitions, which shortens lamp life, in view of overall energy usage and lamp usage.
Owner:ABL IP HLDG
High-pressure mercury lamp
InactiveUS6538383B1Improve luminous efficiencyProlong lifeIncadescent screens/filtersDischarge tube luminescnet screensHigh pressureXenon
A high-pressure mercury lamp includes an arc tube, and a pair of electrodes is provided in a discharge space of the arc tube. In the discharge space, mercury and xenon gas are sealed. The amount of mercury per unit volume that is to be sealed in the discharge space is within a range of 0.12 mg / mm3 to 0.35 mg / mm3. A pressure of the xenon gas in the discharge space is within a range of 2.0x105 Pa to 2.0x106 Pa.
Owner:PANASONIC CORP
Device and method for lighting high-voltage discharge lamp
ActiveUS20070018591A1Reduce timeIncreasing the temperature of a lamp electrode quickly and sufficientlyElectric light circuit arrangementGas discharge lamp usageEngineeringElectric light
An operating device control section (4) controls an output current of a DC-DC converter (1), and also controls a commutation frequency of a commutator (2) that converts a direct current output from the DC-DC converter into an alternating current. The operating device control section operates a discharge lamp, at the start of lamp operation, with a predetermined voltage value lower than a rated voltage and a first target current value higher than a rated current, then, at an end of a predetermined high frequency start period (T1) elapsed from the start of lamp operation, controls the commutator to switch from a commutation frequency higher than that during a steady lamp operation to a commutation frequency during the steady lamp operation, and then, after a voltage applied to the discharge lamp increases and reaches a voltage not lower than a predetermined threshold voltage (Vth) which is not higher than the rated voltage, controls the DC-DC converter to switch from the first target current value to a second target current value which is not higher than the rated current to operate the discharge lamp. A temperature of a lamp electrode can be increased quickly and sufficiently to reduce a time required to increase the lamp illuminance, thereby reducing a time required to cause video to be viewable.
Owner:PANASONIC CORP
Projection-type image display apparatus, lighting apparatus and lighting method realizing an extended lifetime
InactiveUS20090091272A1Bright enoughExtend lamp lifeElectrical apparatusElectric light circuit arrangementLight equipmentEffect light
A projection-type image display apparatus includes a high pressure discharge lamp, which utilizes the halogen cycle, and a lamp lighting apparatus that controls lighting of the high pressure discharge lamp. The lamp lighting apparatus performs lamp refresh processing to improve a lamp property. The lamp refresh processing involves performing low power lighting of the high pressure discharge lamp by changing the lighting power of the high pressure discharge lamp to a value that is lower than the rated power, and thereafter performing high power lighting of the high pressure discharge lamp by changing the lighting power to a value that is higher than the lighting power during the low power lighting.
Owner:PANASONIC CORP
Apparatus and method for prolonging lamp lifetime
InactiveUS20060049780A1Decrease in luminanceExtend lamp lifeElectrode assembly support/mounting/spacing/insulationStatic indicating devicesControl signalComputer science
An apparatus for prolonging lamp lifetime by reducing luminance of a least one lamp (5) in phases includes an image signal outputting unit (1), a scaler (2), and a Microprogrammed Control Unit (MCU) (4). The MCU further includes a CPU (41), a timer (42), and a memory (43). The image signal outputting unit outputs image signals to the scaler. The MCU detects in real-time statuses of the image signals being input to the scaler. The timer records each elapsed time “Tn” during which no image signal is input to the scaler. The CPU compares the elapsed time “Tn” with preset times stored in the memory, and sends a control signal to the scaler according to the comparison result. The scaler generates PWM waves with a corresponding duty cycle according to the control signal, in order to control the luminance of the lamp. A related method for prolonging lamp lifetime is also provided.
Owner:HON HAI PRECISION IND CO LTD
Liquid crystal display backlight inverter
ActiveUS7612505B2Smooth changeExtend lamp lifeCurrent/voltage measurementStatic indicating devicesLiquid-crystal displayControl signal
A LCD backlight inverter including: a dimming control unit comparing a level of a triangle wave with a level of a dimming control signal and controlling a dimming control current to be supplied or interrupted according to a comparison result; an error amplification unit having an input end to which a detection voltage corresponding to the dimming control current and a current flowing through a lamp are inputted, comparing the detection voltage with a predetermined reference voltage, and outputting an error voltage corresponding to a difference via an output end thereof, the output end working as a ground when the dimming control current is not inputted; and a time constant circuit unit comprising a resistor connected between the output end of the error amplification unit and a voltage source and a capacitor connected between the output end of the error amplification unit and a ground.
Owner:SKAICHIPS CO LTD
Sequential color recapture for image display systems
InactiveUS20050185148A1Improve lighting efficiencyHigh implementation costTelevision system detailsProjectorsLight beamOptoelectronics
A method for transmitting light in an image display system includes generating a beam of light from a light source. The beam of light is directed at a first segment of an electronically-switchable filter. A first portion of the beam of light is accepted by the first segment of the electronically-switchable filter, and a second portion of the beam of light is rejected by the first segment of the electronically-switchable filter. The first portion of the light beam is modulated to produce at least a portion of a displayed image. The second portion of the light beam is recycled to redirect the second portion of the light beam at a second segment of the electronically-switchable filter. The second portion of the light beam is accepted by the second segment of the electronically-switchable filter. The second portion of the light beam is modulated to produce at least a portion of the displayed image.
Owner:TEXAS INSTR INC
Half-bridge-type control signal generating circuit and method thereof
InactiveUS6995989B1Prevent burnoutExtend lamp lifeConversion with intermediate conversion to dcEmergency protective circuit arrangementsControl signalElectronic switch
A half-bridge-type control signal generating circuit outputs two control signals to control directly and drive switching actions of two electronic switches of a half-bridge-type circuit architecture. The half-bridge-type control signal generating circuit comprises an AND-gate logic unit, a NAND-gate logic unit, a circuit protection unit, a function generator, a clock generator, a soft boot unit connected to the clock generator, a sample and hold unit, a first comparator connected to the soft boot unit and the function generator, an OR-gate logic unit connected to the soft boot unit, the first comparator, the AND-gate logic unit and the NAND-gate logic unit, a second comparator connected to the sample and hold unit, the function generator, the AND-gate logic unit and the NAND-gate logic unit, and a dead time control unit connected to the function generator, the AND-gate logic unit and the NAND-gate logic unit.
Owner:NIKO SEMICON
Display apparatus
InactiveUS7438420B2Increase contrastExtend lamp lifeTelevision system detailsColor signal processing circuitsLight modulationBrightness perception
Owner:MITSUBISHI ELECTRIC CORP
Projector lamp control for increased lamp life
InactiveUS7432667B2Reduce probabilityExtend lamp lifeElectrical apparatusElectric light circuit arrangementLeading edgeControl signal
An electronic lamp control system for life time extension of a DC high intensity discharge lamp has a light sensor (130) for sensing an output of a lamp (31), a power supply (110) for the lamp (31), and a controller (20) for controlling the power supply (110). The controller (20) has a high pass filter (20c) for compensating for a leading edge of a detected change in lamp power output caused by each arc displacement. Lamp life is extended since damage to the lamp electrodes by the arc displacements is reduced. The system can have multiple lamps for the same illumination area, or multiple channels for illuminating different areas, coupled to provide uniform illumination. The controller (20) can compare a sensed level to a reference, to output a level control signal, then add a correction signal from the high pass filter to the level control signal.
Owner:BARCO NV
High intensity lamp system for a motorcycle
InactiveUS20050174788A1Extension of lifetime of productWell heat dissipationElectrical apparatusOptical signalOperating temperatureHalogen
A high intensity lamp system for a motorcycle incorporating a plurality of commercially available integral reflector halogen lamps within a crossmember element of a motorcycle triple tree assembly. A control system continually adjusts the power delivered to the lamps to maintain safe operating temperature to maximize bulb life at light intensity levels consistent with vehicular applications for headlighting applications. This is achieved using lamps not intended for sealed operation and the high shock and vibration environment of a vehicular or motorcycle application. A microprocessor-based digital control system of the preferred embodiment permits additional control and continual adjustment of lamp power to eliminate visible dimming of the lamps dependant on engine speed and state of the vehicle charging system, which dimming is evident in prior art use of high intensity lamps operating at light output levels reduced from maximum ratings for bulb life considerations.
Owner:NIAGARA PRECISION
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