Abstract: There is provided a lighting device, comprising at least one light emitter, at least one reflector and at least one sensor. The sensor is positioned within a region which receives direct light from the light emitter when the light emitter is emitting light. In some embodiments, the light emitter comprises one or more light emitting diode. In some embodiments, the sensor is positioned between the light emitter and a power supply. In some embodiments, the reflector comprises at least one opening, and light emitted by the light emitter passes through the opening to the sensor. In some embodiments, the sensor is sensitive to only some wavelengths of visible light. Some embodiments are back-reflecting lamps, and some are forward-reflecting lamps.

Abstract: The invention relates to a window (1), in particular, a building window, wherein the window comprises photoluminescent material (2) located within the window. The photoluminescent material (2) is preferentially a phosphorescent material provided on a sun blind which is located within a sealed space (5) between two transparent plates (3, 4) of the window. The photoluminescent material can be charged up by daylight and during the night the photoluminescent material can emanate light. Since the photoluminescent material is located within the window, the photoluminescent material is protected against environmental influences, in particular, against humidity, thereby increasing the lifetime of the photoluminescent material and, thus, of the window. The invention relates further to an object, in particular, a building, comprising the window, thereby giving the object an ambient glow.

Abstract: The present disclosure relates to a duty cycle adjusting circuit of a lighting system and method thereof for sensing light of a first color and a second color emitted by a light emitting device of the first color and a light emitting device of the second color to generate corresponding intensity values. Then a first pulse width correcting value and a second pulse width correcting value can be calculated for adjusting a first duty cycle and a second duty cycle of a driving current to adjust the illuminating intensity of the light emitting devices of the first and the second colors. Through these adjusting steps, the light of the first and the second colors is within a predetermined range of color temperature. Therefore, light source for stable light in color temperature is provided.

Abstract: A wireless lighting control system comprises a daylight sensor for measuring a light intensity in a space and a dimmer switch for controlling the amount of power delivered to a lighting load in response to the daylight sensor. For example, the daylight sensor may be able to transmit radio-frequency (RF) signals to the dimmer switch. The system provides methods of calibrating the daylight sensor that allow for automatically measuring and/or calculating one or more operational characteristics of the daylight sensor. One method of calibrating the daylight sensor comprises a “single-button-press” calibration procedure during which a user is only required to actuate a calibration button of the daylight sensor once. In addition, the daylight sensor is operable to automatically measure the total light intensity in the space at night to determine the light intensity of only the electrical light generated by the lighting load.

Abstract: Various techniques are provided for programming lighting devices. In one example, a lighting device includes a light emitting diode (LED). The lighting device also includes a microcontroller configured to receive a programming signal generated by the LED in response to illumination of the LED with an externally-supplied light signal modulated with the programming signal.

Abstract: A lighting system distinguishes between light from natural and manmade sources to prevent the system's light source from being inadvertently deactivated due to light received from manmade light sources. A sensor converts received light into electrical energy. The system light source and/or some other external light source can emit light with a modulation. The system includes a modulation detector that can detect the modulation in the electrical energy received from the sensor. A system controller selectively adjusts the flow of electrical energy to the system light source responsive to the electrical signals from the sensor. The controller adjusts the flow of electrical energy in response to the non-modulated component of the electrical signals from the sensor. The controller does not adjust the flow of electrical energy in response to the modulated component of the electrical signals from the sensor.

Abstract: A controller for controlling a plurality of devices configured for wireless communications in a facility includes a data communications interface communicating with at least one of the devices. The controller further includes a control module configured to provide a control signal to the data communications interface for communicating to a transceiver associated with the device and for turning off the device according to an algorithm wherein the control signal is provided based on a time of day and/or a sensed condition relating to use of the facility. The transceiver reports device data to the control module to quantify a reduction in power obtained by controlling the devices according to the algorithm.

Abstract: The apparatuses disclosed herein include a discharge lamp configured to emit ultraviolet and visible light, an optical filter configured to attenuate visible light, and a power circuit configured to operate the discharge lamp. Some embodiments of the apparatuses are configured such that ultraviolet light emitted from the discharge lamp and passed through the optical filter encircles an exterior surface of the apparatus. Some cases of the apparatuses include a sensor system configured to monitor a first parameter associated with the operation of the discharge lamp and a second parameter associated with the transmittance of the optical filter. Some of the apparatuses include a means for moving the optical filter while the apparatus is in operation. In some cases, the apparatuses may be configured such that the optical filter may be arranged in and out of alignment with the discharge lamp. In some embodiments, the optical filter may be a multifaceted.

Abstract: This invention relates to a method for controlling a light output signal emitted by a set of light sources comprising at least one light source, wherein said light output signal comprises a modulation signal which carries individual information, the method comprising recurrently: remotely detecting the light output signal of said set of light sources; determining at least one quality measure of said remote detection of the light output signal; and adjusting the modulation signal on basis of said at least one quality measure.

Abstract: A photocontroller operates one or more lamps, such as a GU24 compact fluorescent lamp, based on ambient light to provide dusk-to-dawn operation. The photocontroller includes a photosensor for detecting the level of ambient light. The photosensor provides a signal to a photocontrol circuit that controls a switching device to selectively provide power to the lamp based on the level of ambient light detected by the photosensor. A fault detection circuit monitors the level of ambient light and the status of the lamp to determine whether the photocontroller is operating properly. The fault detection circuit determines the status of the lamp based on current flow to the lamp as determined by a current sensor. In addition, the photocontroller can include a processor for performing certain photocontrol and fault monitoring functions.

Abstract: A constant temperature LED driver circuit for controlling the rate of lumen depreciation and therefore useful lifetime of an LED array by keeping the LEDs at a fixed temperature. A temperature sensing means, which measures the temperature of the LEDs, is coupled to a variable power source that drives the LED array. The current provided to the LED array is adjusted in response to the temperature sensing means to ensure that the LEDs remain at a constant temperature regardless of changes in ambient temperature.

Abstract: A portable electronic device and a light flickering method for light emitting elements thereof are both disclosed herein. The portable electronic device includes at least one light emitting element. The light flickering method comprises the following steps: setting personalized light flickering data with a user interface; storing the personalized light flickering data; generating a control signal in accordance with the personalized light flickering data; and generating a driving signal in accordance with the control signal and driving the light emitting elements with the driving signal.

Abstract: In one embodiment, apparatus for integrating a quantity of light is provided with a photosensor, an integration capacitor, and a transfer amplifier. The transfer amplifier has i) an input coupled to receive a voltage determined by the integration capacitor, and ii) an output. The apparatus is further provided with a first switch to pull the integration capacitor to a precharge voltage, and a second switch to couple the integration capacitor to the photosensor, to discharge the integration capacitor in proportion to a quantity of light that is incident on the photosensor. Other embodiments are also disclosed.

Abstract: A LED lamp and a manufacturing method thereof are disclosed. At least one blue LED chip can be used as an excitation light source. A number of red LED chips are arranged around the blue LED chip. The blue LED chip and red chips are covered with a packaging material with phosphor. The intensity of red light can be adjusted by a control circuit. Thus, the white LED lamps with high efficacy and high color rendering at different color temperatures can be achieved.

Abstract: Report systems and methods using light-emitting diode lamps are disclosed. The report systems and methods feature in that a local geographic information is measured, a light with a color temperature indicating the local geographic information is emitted, and the color temperature is reported.

Abstract: A lighting control console for controlling a lighting system, wherein digital adjusting commands are generated in the lighting control console, which can be transferred to the lighting devices of the lighting system via data connections, and wherein the lighting control console comprises at least one digital processor and at least one digital memory for generating, managing and storing the adjusting commands, and wherein the lighting control console comprises a remote control, and wherein operator inputs can be input at the remote control and can thereafter be transferred to the lighting control console via a data interface, and wherein at least one motion sensor, by means of which motions of the remote control can be detected, is installed in the remote control, wherein the sensor signals of the motion sensor can be evaluated in an evaluation module and can be transformed into operator inputs for the lighting control console.

Abstract: A photocontroller operates one or more lamps, such as a GU24 compact fluorescent lamp, based on ambient light to provide dusk-to-dawn operation. The photocontroller includes a photosensor for detecting the level of ambient light. The photosensor provides a signal to a photocontrol circuit that controls a switching device to selectively provide power to the lamp based on the level of ambient light detected by the photosensor. A fault detection circuit monitors the level of ambient light and the status of the lamp to determine whether the photocontroller is operating properly. The fault detection circuit determines the status of the lamp based on current flow to the lamp as determined by a current sensor. In addition, the photocontroller can include a processor for performing certain photocontrol and fault monitoring functions.

Abstract: A sensor circuit for remotely commanding the operation of a remote device includes a motion sensor circuit for detecting motion relative thereto and having an output conditioned upon motion detection. Additionally, a photocell sensor circuit for detecting a low ambient illumination level has an output command conditioned upon the detection of a predetermined illumination level that is electrically coupled to a control circuit having a plurality of inputs. The invention further includes a data output comprising a remote device operation command and a transmitter circuit coupled to the data output of said control circuit for transmitting said operation command to a remote device.

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: An arc discharge detection device is used for detecting arc discharges in a plasma process. The arc discharge detection device includes a comparator to which an instantaneous signal and a reference value are supplied. The reference value is formed by a setting means from an extreme value of the signal. The extreme value is determined by an extreme value detection device within a predetermined time period, and the comparator changes the state of an arc discharge detection signal when the comparison between the reference value and an instantaneous value of the signal shows that an arc discharge has occurred.

Abstract: Systems and methods are provided for a display device including one or more methods for modifying the display brightness by automatically adapting to ambient lighting conditions.

Abstract: The invention relates to a method of controlling a temporal variation of light emitted by an illumination system. The light emitted by the illumination system varies from light having a start color point (14) to light having a target color point (12). The start and target color point are defined in a first color space (XYZ, RGBvid, RGBill), which is perceptually non-uniform. The method according to the invention converts the start and target color point from the first color space to a second color space (Lab, Lch), which is more uniform to the human visual system than the first color space. The method further comprises a step of generating an intermediate color point (34, I1, I2) located on a transition-path (p, p?) within the second color space, an intermediate distance (d) between the start color point in the second color space and the intermediate color point in the second color space not being larger than a threshold distance (26).

Abstract: Controlling a lighting system, which comprises a controller (2, 10), lighting units (6), and a sensing device. Each lighting unit comprises a lighting source (12) and a modulated light source (14). A single light source may be used to function as both the lighting source and the modulated light source. Each modulated light source emits uniquely modulated light. A radiation pattern of each modulated light source coincides substantially with a radiation pattern of a lighting source of the same lighting unit. The sensing device is suitable to sense modulated light in a viewing area. Lighting units from which the sensing device senses modulated light are identified from the modulation of that modulated light. The sensing device measures the intensity of the modulated light from the identified lighting unit. The lighting sources are controlled dependent on control data which comprises measuring values of measured light intensities.

Abstract: An illumination device improved in safety to the eye is provided. The illumination device includes: a semiconductor laser element to serve as an excitation light source which emits laser light; a fluorescent plate which contains a fluorescent substance for emitting light of a desired color and is irradiated with laser light emitted from the semiconductor laser element; a light receiving element part which detects light reflected from the fluorescent plate; and a light source control part which controls laser light emitted from the semiconductor laser element based on a detection signal from the light receiving element part.

Abstract: An electroluminescent (EL) element is connected to the power supply and is intermittently operated as a lighting device and as a brightness sensor. For this purpose, the processing unit induces the controlled AC voltage source to reduce the voltage for a short period. The current intensity is measured by current measuring devices and the corresponding measuring signal is digitized using the analog/digital converter (A/D). A processing unit uses the signal and the effective voltage to determine, by means of empirical calibration data stored in the memory or by using a calibration function, the brightness, i.e. the luminance of the light that is incident on the EL element. The processing unit associates, using desired values stored in the memory, the detected brightness with an operating voltage level which ensures the desired emission brightness of the EL element when operated as a lighting device.

Abstract: An optical device capable of illuminating visual light with adjusting color temperature after fabrication is disclosed. The optical device includes a solid state light emitter and a phosphor layer, which is formed over the solid state light emitter. The solid state light emitter, which can be a light emitter diode (“LED”), converts electrical energy to blue light. The phosphor layer subsequently converts first light with a first wavelength to second light with a second wavelength. In one example, the first light is blue light while the second light is white light. A portion of the phosphor layer is adjusted after the phosphor layer is formed for adjusting color of the white light in accordance with color quality of the light detected by a light detector.

Abstract: A vehicle includes a vehicle body and a solar-powered light emitting device. The solar-powered light emitting device includes a hollow base, a light emitting unit, a light guide element, a power supply unit, and a control unit. The hollow base is disposed on a lateral side of the vehicle body, confines a receiving space, and is formed with a light exit in spatial communication with the receiving space. The light emitting unit includes a control board and a light emitting element. The light guide element is disposed on the hollow base outwardly of the receiving space, and is disposed to receive the light passing through the light exit. The power supply unit includes a solar cell and a rechargeable battery unit. The control unit is coupled electrically to the rechargeable battery unit and the light emitting unit, and includes a light sensor and a vibration sensor.

Abstract: A power-saving circuit is provided for saving electrical power by detecting a presence or absence of an object in a localized area. The power-saving circuit includes a sensor module, and a switch module connected to the sensor module. The detector is adapted for outputting a control signal at a first state when an object is detected in the localized area, and outputting a control signal at a second state when an object is detected not in the localized area. The switch module provides a stable DC voltage according to the control signal at the first state, and not provides the stable DC voltage according to the control signal at the second state.

Abstract: The present invention discloses an ultrasonic apparatus with an adjustable horn. The ultrasonic apparatus comprises a transmission device, a horn and an ultrasonic transceiver device. The horn and the transmission device are geared by a helical gear. The ultrasonic transceiver device is connected to the end of the helical gear. When the transmission device moves the horn to a first position, the ultrasonic transceiver device is applied for on/off control; while the transmission device moves the horn to a second position, the ultrasonic sensor is applied for digital control.

Abstract: A circuit for operating a plurality of electrical devices at a plurality of varying power levels includes a plurality of motion sensor circuits for detecting motion relative thereto and having an a plurality of outputs conditioned upon motion detection. Additionally, a photocell sensor circuit for detecting a low ambient illumination level has an output command conditioned upon the detection of a predetermined illumination level that is electrically coupled to the control circuit having a plurality of inputs.

Abstract: An electronic device comprising a sensor adapted to sense ambient light and an indicator adapted to display a power consumption status. The electronic device may additionally comprise a processor adapted to vary the luminosity of the device based on the ambient light sensed. A method may comprise sensing ambient light, illuminating a display at a luminosity based on the ambient light, and displaying a power consumption status on the device.

Abstract: A method and apparatus is provided for controlling power consuming devices within a user space. The method includes the steps of providing a plurality of power control devices where each power control device of the plurality of power control devices controls a power consuming device within the user space, a base station controlling a power level of the power controlling devices in accordance with a set of parameter provided by a user of the user space, a solar detector detecting a solar input proximate the user space and the base station adjusting a power level of the power control devices in accordance with the detected solar input.

Abstract: Disclosed are a portable terminal including, a terminal body having a display, a solar cell disposed on at least one region of the terminal body and configured to convert sunlight into electric energy for charging a battery, a sensing unit configured to detect a quantity of state relating to the electric energy generated from the solar cell, and a controller configured to control brightness of the display based upon the quantity of state detected by the sensing unit, and a method for controlling a display thereof.

Abstract: An exemplary light source device (10) includes a power supply (12), a light source (14), and a photodetector (16). The photodetector includes a light sensor (17) and a resistor (18) connected in parallel. The power supply, the light source, and the photodetector are connected in series. When the intensity of ambient light increases, a resistance of the light sensor decreases so as to increase a light intensity of the light source. When the intensity of ambient light decreases, the resistance of the light sensor increases so as to decrease the light intensity of the light source.

Abstract: An electric torch includes a main body, a holder and a connecting portion. The main body includes a lamp shade and a light emitting portion. The lamp shade defines a receiving space. The light emitting portion is secured in the receiving space and configured for emitting light. The holder is rotatably connected to the main body via the connecting portion and configured for supporting the main body. The connecting portion includes a protrusion, a locating rod and a torsion spring. The protrusion is extended from the main body and communicates with the receiving space of the lamp shade. The locating rod is inserted into the protrusion and received in the holder with two ends fixed to the holder. The torsion spring is sleeved on the locating rod with one end attached to the lamp shade and another end attached to the holder.

Abstract: One embodiment of the present invention provides a system for calibrating a lighting control system. The lighting control system is a daylight-harvesting system that controls the output of the lighting system based on available daylight and/or other light sources to reduce energy usage while providing lighting for an area. The lighting system includes multi-level lighting capabilities for one or more light sources. First, the system measures the light levels for the area when the lighting system: is turned on at a high energy-level; is turned on at an intermediate energy-level; and is turned off. The system determines from these measured light levels the light output of the lighting system in the different states. Then, during operation, the system measures a present light level for the area. The system then adjusts the light output of the lighting system for the area based on a lighting control parameter (e.

Abstract: An area lighting system is composed of a plurality of lighting elements that are responsive to the movement and progression of a user through the area. Each lighting element comprises at least one light, means for powering the lighting element, a processor, communication means and is associated with a motion sensor. Detection of a user is communicated to other lighting elements that provide an appropriate level of illumination depending on the distance from the user. The lighting elements are substantially self-configurable and may be set for either a radial proximity lighting protocol or a path network lighting protocol.

Abstract: An adaptor includes a power connection unit electrically connected to a power line that may be extended from an AC plug; a power supply unit electrically connected to the power connection unit, configured to supply power; a light emitting device driver that generates driving power from the power supplied by the power supply unit; and a controller that controls the light emitting device driver.

Abstract: An outdoor lighting control method and apparatus for use with an outdoor lighting fixture that automatically detects the changing length of the day and provides for automatically turning off the light after a shorter period of illumination during shorter summer nights and after a longer period of illumination during longer winter nights. The control method measures the elapsed time interval over which night sets in, for example, by sensing light levels characteristic of the onset of dusk and the onset of night and measuring the elapsed time between the two sensed light levels, and then automatically turns on the lighting fixture for nighttime operation for a duration that depends on the measured elapsed night-onset time.

Abstract: A lighting device (10) comprises a LED (4), a driver (3), and a controller (2) which regularly switches from a drive state to a measuring state and back. In the measuring state, the controller controls the driver such that the driver does not generate any LED current. The LED produces a measuring signal (Sm) indicating a measured light level. The controller processes the measuring signal received from the LED, and makes a decision on the desired light output of the LED. In the drive state, the controller controls the driver such that the average light output produced by the LED corresponds to the desired light output as determined in the measuring state. In a possible embodiment, the driver generates a nominal LED current INOM, and sets the duration (? 1) of the drive state on the basis of the desired light output of the LED as determined in the measuring state.

Abstract: An illuminance sensor is formed as a current output type sensor that outputs a current which increases or decreases in an analog manner corresponding to an increasing or decreasing change of the illuminance. A light-emitting device is connected with a detection resistor that detects a current flowing through a light-emitting device. A driving control circuit has a light-emitting device driver that outputs to the light-emitting device a voltage for holding a voltage, which is obtained when a current flowing through the light-emitting device and a current detected by the illuminance sensor flows through the detection resistor, in a predetermined value all the time. The light-emitting device emits a large amount of light in a dark place and emits a small amount of light in a bright place.

Abstract: An apparatus for regulating power in an accelerator system includes a directional coupler for sensing a power reflected from an accelerator towards a power source, and a power modulator for reducing an output of the power source based on the sensed power. A method for regulating power in an accelerator system includes sensing a power reflected from an accelerator towards a power source, and reducing an output of the power source based on the sensed power.

Abstract: An apparatus and method for controlling brightness of a backlight unit in an electronic apparatus is provided. The apparatus includes a solar light generator and a controller. The solar light generator generates a current in proportion to an amount of light. The controller determines the brightness of the backlight unit according to the current. Therefore, a contradiction that an illuminance sensor which causes another current consumption is used in order to control the backlight unit according to an ambient light amount of an electronic apparatus may be resolved.

Abstract: An illumination system comprises an illumination assembly, a human body's signal detecting unit, a processing unit and an illumination direction adjustment unit. The illumination assembly projects an illumination light beam along an illumination direction; the human body's signal detecting unit detects at least one human body's signal released from at least one user to accordingly generate an intensity signal; the processing unit receives the intensity signal and transmits an illumination direction adjustment signal according to the intensity signal; and the illumination direction adjustment unit receives the illumination direction adjustment signal to automatically adjust the illumination direction.

Abstract: A solar charged or solar powered illuminating device comprises a shell and a lampshade, wherein said shell is capable of being hung on a transparent surface comprising a backlight surface and a light-receiving surface, wherein said light-receiving surface is abutted against said transparent outward surface, said shell further comprising: a solar panel, an illuminating module, a battery unit and a power control module. Said solar panel is arranged on the light-receiving surface for receiving solar energy and converting solar energy into electric energy; said illuminating module is arranged on the backlight surface; said battery unit is used for storing the electric energy and said power control module connected with said solar panel and said battery unit is used for receiving electric energy converted by solar panel, charging the battery unit, and controlling the discharge of rechargeable batteries, wherein said battery unit can generate a first output voltage for illuminating module.

Abstract: An infusion system that includes a controller device and a communication system to provide for two-way communication between the controller device and an infusion device that controls delivery of fluids to a user's body. Either the controller device or the infusion device may be integrated with a characteristic determining device in a single housing. The housing, in turn, may include a test-strip receptacle and an illuminator disposed so as to illuminate an area covering the receptacle and a test-strip inserted therein. The illuminator may be configured to be activated automatically when a test strip is inserted into the receptacle, selectively by the user via a button, key, or similar mechanism, and/or when the ambient light level, measured, e.g., with a light sensor, falls below a predetermined intensity. The illuminator may be a LED emitting white light, and may provide illumination at various levels of intensity.

Abstract: A light source driving apparatus, which adjusts a bias current to be supplied so as to control intensity of a light source, comprises a power source which outputs a variable reference voltage; a light receiving unit which receives light output from the light source and converts the light into an electric signal; a bias supply unit which supplies a bias current, which is based on an intensity control signal according to the electric signal converted by the light receiving unit and the reference voltage output from the power source, to the light source; and a voltage control unit which acquires information about intensity characteristics with respect to the intensity control signal of the light source and controls the reference voltage according to the acquired information about the intensity characteristics.

Abstract: A method for real time control of lighting system includes the steps of: providing a computer, a SCM (2), a digital-to-analog converter (3), and at least one power amplifier (41, 42, 43) connected to the digital-to-analog converter, each of the at least one power amplifiers connects with a lamp; receiving light control data inputted by a user; transmitting the light control data to the SCM; processing the light control data received by the SCM, and generating digital signals by the SCM; transmitting the digital signals to the digital-to-analog converter; converting the digital signals into an analog signals by the digital-to-analog converter, and transmitting the analog signals to the at least one power amplifier; and amplifying the analog signals and controlling the corresponding lamp connected to the at least one power amplifier. A system for real time control of the lighting system is also provided.

Abstract: An optical structure enabling properties of the surface plasmons to be used is defined from a substantially binary, parameterizable unit pattern ME. The parameters a, b, c, d and hg of the pattern are chosen so as to maximize the complex amplitudes of the first two harmonics of the complex Fourier series describing the pattern ME. This structure is advantageously used in combination with a photodetector, an infrared or Terahertz optical wave emitter, or a field emission device.

Abstract: An easily deployable miniature, LED light unit specifically for home security yard signs that is rechargeable by means of a solar cell array having a light sensor which automatically activates the light at dusk and deactivates it at dawn. The solar light unit is contained in a unique compact molded housing that positions the components and also includes an integral clamp-mount specifically for slide-on mounting to the stakes of typical home security signs.