Abstract: A controller (1) configured to control properties of light emitted from a light emitting device (4), the controller comprises a control device (2) and a processing unit (3). The control device (2) enables a user to select a color point of the light emitted from the light emitting device (4) in a color space of the light emitting device. The selection of the color point is done by the user providing a single input to the control device (2). The processing unit (3) being configured to change the color point of light emitted from the light emitting device based on the single input. The change of the color point is done along a meandering curve extending along the black body locus (BBL) in accordance with the received single input.

Abstract: The disclosed devices may include a driver circuit including a voltage boost circuit, a pulse modulation controller, and optionally a headroom processor. The voltage boost circuit may be configured to receive a device input voltage (such as a battery voltage) and generate a backlight drive voltage. The pulse modulation controller may be configured to provide a pulse modulation signal to the voltage boost circuit, and may include a digital circuit or an analog circuit. Example devices may include a backlight unit receiving the backlight voltage. The optional headroom processor may provide a headroom signal to the pulse modulation controller based on a headroom voltage determined from the backlight unit. Devices may further include a backlight unit including an arrangement of light-emissive elements, and may include display devices such as head-mounted devices. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Provided is a display device including: a substrate having a display area and a peripheral area outside the display area; a first transistor and a second transistor each located over the display area of the substrate and arranged at different levels on the substrate; and a plurality of wirings located over the peripheral area of the substrate, wherein the plurality of wirings include first wirings and second wirings, the first wirings and the second wirings being located at different levels on the substrate and are alternately arranged with each other.

Abstract: It is intended to provide an irradiation device that can achieve good starting performance even without encapsulating a starting performance promoting substance into the internal space of a luminous tube in a discharge lamp, and simultaneously, can distinguish whether the discharge lamp is a genuine product or not. An irradiation device (50) is composed of a discharge lamp (110) provided as a light source and an ultraviolet light source (200) irradiating ultraviolet light to the discharge lamp (110) to detect whether the discharge lamp (110) is a genuine product or not in activation of the discharge lamp (110).

Abstract: A light sensor having a voltage reversing mechanism is provided. A photoelectric component converts a first light signal into a first photocurrent. A capacitor is charged to a first voltage by the first photocurrent. A counter counts a first coarse count value according to the first voltage. The photoelectric component converts a second light signal into a second photocurrent. The capacitor is charged from a reversed first voltage to a second voltage by the second photocurrent. The counter counts a second coarse count value according to the second voltage. The counter counts a fine count value according to the second coarse count value. One of the first light signal and the second light signal is emitted by both of an ambient light source and a light-emitting component and then reflected by a tested object, and the other one of them is emitted by only the ambient light source.

Abstract: An image processing device that realizes local dimming control and push-up control of a display device using an artificial intelligence function is provided. The image processing device includes a trained neural network model that estimates a local dimming pattern representing light emitting states of light source units corresponding to a plurality of areas divided from a display area of an image display unit for a target display image, and a control unit that controls the light emitting states of the light source units on the basis of the local dimming pattern estimated by the trained neural network model for the target display image displayed on the image display unit.

Abstract: Timing adjustment for accurate zero-crossing determination includes obtaining time offset(s) representing amounts of time between (i) zero-crossings of an input signal waveform, representative of an input AC waveform, input to a zero-crossing detector circuit and (ii) corresponding transitions of an output signal from an output of the circuit to a microcontroller, and determining times of the zero-crossings of the input AC waveform, which includes determining times of the corresponding transitions as detected by the microcontroller and adjusting the determined times using the time offset(s) to produce the times of the zero-crossings of the input AC waveform. In another aspect, input AC frequency is determined by determining pulse width(s) of pulse(s) of the output signal, and adjusting a half-cycle time corresponding to the pulse width(s) using the time offset(s) to provide a duration of half-cycles of the input AC waveform and inform a frequency of the input AC waveform.

Abstract: Circuitry to control dimming of a load circuit may be connected between a 0-10 V dimmer that outputs a DC voltage control signal and the load circuit. The circuitry may include a microcontroller that may be programmed to generate a first pulse-width modulated (“PWM”) signal having a duty cycle based on the dimming level configured to be set on the dimmer. A voltage conversion circuit may supply the microcontroller with data relating to the set dimming level. The microcontroller may be programmed to synchronize the first PWM signal with the supplied AC power from the main circuit based on a second PWM signal from a voltage detection circuit, such as a zero crossing voltage detection circuit. The first PWM signal may be supplied from the microcontroller to an on/off switch to chop the AC power waveform at certain intervals and thereby dim the load.

Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a power supply controller configured to receive a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge, the power supply controller being further configured to generate a first signal based at least in part on the cathode voltage; and a driver configured to receive the first signal and generate a second signal based at least in part on the first signal, the driver being further configured to output the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to the driver and a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode.

Abstract: Embodiments of the present disclosure provide a backlight control circuit, a method for driving the same, a backlight module and a display apparatus. The backlight control circuit includes: an undervoltage protection circuit, electrically connected with a power supply voltage input end and a ground, and configured to output a closing control signal through an output end of the undervoltage protection circuit according to a voltage at the power supply voltage input end and an undervoltage threshold value; and a backlight driving circuit, electrically connected with a voltage supply end, a backlight driving output end and the output end of the undervoltage protection circuit separately, and configured to enable a port of the backlight driving circuit when receiving an enabling control signal for processing a voltage at the voltage supply end and outputting the processed voltage to the backlight driving output end, and stop working when receiving the closing control signal.

Abstract: A driving circuit and a method for operating the driving circuit is provided for a lamp, the lamp includes a lighting unit, and a first and a second pair of connection pins for coupling the driving circuit to a power supply unit. The driving circuit includes a pre-heating detection circuit and a protection circuit. The pre-heating detection circuit is coupled to the first pair of connection pins and configured to detect a voltage between the first pair of connection pins and output a reference voltage. The protection circuit includes a switching circuit connected in series with the lighting unit, the protection circuit is configured to compare the reference voltage with an input voltage of the lamp and turn on the switching circuit to light the lighting unit when the input voltage of the lamp is greater than the reference voltage.

Abstract: An enhanced smart lighting system (ESLS) for use in buildings without neutral wire connections for wall switches. The ESLS entails both a no-neutral wire smart lighting switch (NNWSLS) and a physically separate load adapter. The NNWSLS includes a sensing, control, or communication system (SSCCS) such as integrated WiFi. The load adapter mitigates electrical fluctuations which may be induced in a power load (for example a lightbulb) by the smart lighting switch, particularly when the smart lighting switch is nominally powered off but still has some current flow. The load adapter is an intermediary between the power load and a conventional load receptacle. The load adapter has an integrated dummy load configured in parallel with the power load. The dummy load provides an electrical pathway for low levels of electricity which run through the light socket even when the NNWSLS is set to an “off” configuration.

Abstract: A solid-state imaging device includes a pixel array unit and a current source array unit. The pixel array unit includes N pixel units arrayed in a first direction. Each pixel unit includes a photodiode and an amplification MOS transistor. The current source array unit includes N current sources. Each current source includes a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, and a setting circuit. The setting circuit sets ON/OFF of the third MOS transistor on the basis of a voltage of the signal line, thereby suppressing fluctuations in an amount of current flowing from a Vr supply line to a ground potential supply terminal via a common node and the first MOS transistor.

Abstract: An LED illuminating device without using a capacitor includes a surge absorber group, a three-phase rectifier bridge module, an LED chip group and a current-limiting chip group. The surge absorber group includes a first surge absorber electrically connected between the first and the second AC power input terminal, and a second surge absorber electrically connected between the second and the third AC power input terminal, and a third surge absorber electrically connected between the third and the first AC power input terminal. The three-phase rectifier bridge module is electrically connected to the first, the second and the third AC power input terminal. The LED chip group is electrically connected to the three-phase rectifier bridge module. The current-limiting chip group is electrically connected to the bridge rectifier group. The LED illuminating device can generate a lighting source through a three-phase power provided by a three-phase power supply.

Abstract: A decorative lighting dimmer switch without influencing charging is provided. The decorative lighting dimmer switch includes a charging module used for providing 12V direct current, wherein the charging module is connected to a charging interface of a light emitting diode (LED) lamp. The decorative lighting dimmer switch further includes a constant current source driving module connected to the charging module, wherein the constant current source driving module is connected to the LED lamp, and the constant current source driving module is a constant current source driving circuit including a PT4115 driving chip. The decorative lighting dimmer switch achieves a charging function and an on-line dimming function at a same time by arranging the constant current source driving module to drive the LED lamp to satisfy requirements of consumers.

Abstract: Lighting system having a plurality light emitting diodes, wherein each of the light emitting diodes is configured to output light in a predetermined color bands and is arranged in a corresponding group according to the predetermined color bands. A plurality of power output controllers, each of the plurality of power output controllers configured to output a predetermined power level to the corresponding group of light emitting diodes and a master controller coupled to the plurality of output controllers and operable to synchronize the plurality of output controllers. The master controller operable to receive data from a remote device indicating a desired duty cycle, cycle period, and phase shift of the output power relative to one another.

Abstract: A solid-state light emitter power supply includes a first rectifier circuit, a second rectifier circuit, a power factor correction (PFC) stage, a first flyback converter, a second flyback converter, and a microcontroller. The rectifier circuits are configured to receive phase-cut signals from respective dimmer circuits as inputs and output respective phase-cut rectified power signals. The PFC stage is configured to receive a sum of the phase-cut rectified power signals as input and output a power-factor corrected electrical power to the flyback converters. The flyback converters are connected in parallel and are configured to power respective loads including a respective solid-state light emitter. The microcontroller is configured to receive signals derived from the phase-cut signals as inputs and to output respective pulse-width modulation (PWM) control signals to each of the flyback converters.

Abstract: A light apparatus includes an array of light-emitting diodes (LEDs) in parallel arrangement, in which the LEDs have respective first terminals coupled together for connection to a supply node of a power source that provides the drive current to the LEDs during operation. Driver circuity is disposed between respective second terminals of the LEDs and a return node of the power source. The driver circuitry includes a respective LED driver for each of the LEDs, and each LED driver includes (1) a transistor connected to the second terminal of the respective LED, and (2) a resistor in series between the transistor and a return node of the power source, the transistors of the LED drivers having respective control inputs for receiving respective LED drive signals to control operation of the LEDs.

Abstract: A system and method for controlling a multiplicity of luminaries connected to a single wire pair. The luminaries contain minimum circuitry to allow dimming and color tuning by pulses on the wire pair without the need for a separate control wire or control communication bus or network. A single luminary can be color tuned to many different colors as well as dimmed and turned on and off. A driver module drives the wire pair and receives commands over a network The driver module contains a pulse generation circuit that generates and applies pulses to the two-wire output. The amplitude of some the pulses control color of the luminary by selecting different LEDs in the luminary to light, while other pulses control brightness.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.

Abstract: A LED feedback voltage regulating driving device is provided. The LED feedback voltage regulating driving device includes a microcontroller, a first feedback circuit, a second feedback circuit, an oscillating circuit and a comparison circuit. The first feedback circuit and the second feedback circuit adjust the voltage and current from the electricity supply module and the driving circuit respectively, and transmit the voltage and current to the microcontroller; wherein, the microcontroller and the oscillating circuit reciprocate the voltage and current from the first feedback circuit and the second feedback circuit; wherein the comparison circuit compares the signal from the microcontroller and the oscillating circuit; wherein the pulse circuit adjusts the voltage and the current then transmits the voltage and current to the driving circuit for electricity driving; wherein, during the electricity driving, the driving circuit transmits part of the voltage and current to the second feedback circuit.

Abstract: The invention provides a control device for controlling at least one wirelessly connected lighting device within a wireless network, wherein the control device comprises: a transceiver configured to overhear and transmit a message within the wireless network; a light sensor configured to detect a light signal comprising a temporal characteristic that is characteristic for a first artificial light source; a processor operatively coupled to the light sensor and the transceiver, wherein the processor is configured to: determine, based on analyzing said temporal characteristic, a first condition that the light signal belongs to the of artificial light source, and transmit a control message to the at least one wirelessly connected lighting device upon determining said first condition.

Abstract: An electronic device includes a light-emitting element whose one end is connected to a first voltage source. A control circuit is connected between the other end of the light-emitting element and a host computer and controls the light-emitting element in accordance with a signal from the host computer. A resistance element is connected between a first connecting portion, which is located between the light-emitting element and the control circuit, and a reference potential source.

Abstract: A display device including pixels; a controller configured to generate first compensation data based on first sensing data with respect to threshold voltages of driving transistors of the pixels which are sensed during a first sensing period, to generate second compensation data based on second sensing data with respect to mobilities of the driving transistors of the pixels which are sensed during the first sensing period, to generate third compensation data based on third sensing data with respect to mobility change amounts of the driving transistors of the pixels which are sensed using image data for sensing compensated based on the first and second compensation data during a second sensing period, and to compensate input image data based on the first, second, and third compensation data to generate compensated image data; and a data driver configured to provide data voltages to the pixels based on the compensated image data.

Abstract: The invention generally comprises creating a signal conditioner that is capable of filtering, converting, segmenting and producing a periodic waveform from an electrical source, converting in into an electrical signal to drive an electrical device, such as a LED lamp, so that the behavior of the device driven by the electrical signal enables the device to perform a function that is practically free of the variations present in the main electrical source.

Abstract: A method and apparatus to manipulate a perceived target material color by varying compositions of illumination with static perceived chromaticity is disclosed. An illumination source is configured to emit light at a first set of wavelengths with a first set of amplitudes to illuminate the target material. An observer perceives the emitted light to be at a predetermined chromaticity, and perceives light reflected from the illuminated target material to be at a first chromaticity. A control device switches the illumination source to emit light at a second plurality of wavelengths at a second plurality of amplitudes, which is perceived to the observer to be of the same predetermined chromaticity as before, while the light reflected from the illuminated target material is perceived to be of a different chromaticity.

Abstract: A load control device for controlling power delivered from an alternating-current power source to an electrical load may comprise a controllably conductive device, a control circuit, and an overcurrent protection circuit that is configured to be disabled when the controllably conductive device is non-conductive. The control circuit may be configured to control the controllably conductive device to be non-conductive at the beginning of each half-cycle of the AC power source and to render the controllably conductive device conductive at a firing time during each half-cycle (e.g., using a forward phase-control dimming technique). The overcurrent protection circuit may be configured to render the controllably conductive device non-conductive in the event of an overcurrent condition in the controllably conductive device.

Abstract: A multiple location load control system comprises a main device and remote devices, which do not require neutral connections, but allow for visual and audible feedback at the main device and the remote devices. The main device and the remote devices are adapted to be coupled together via an accessory wiring. The main device can be wired on the line side and the load side of the load control system. The main device is configured to enable a charging path to allow the remote devices to charge power supplies through the accessory wiring during a first time period of a half cycle of the AC power source. The main device and the remote devices are configured to communicate with each other via the accessory wiring during a second time period of the half cycle, for example, by actively pulling-up and actively pulling-down the accessory wiring to communicate using tri-state logic.

Abstract: The invention proposes a communication adaptor, comprising within one casing: a transmission antenna, a wired control interface connected to wired control interface terminals, a control circuitry for converting wirelessly received wireless communication signals into wired control interface signals and vice versa, wherein the adaptor is designed such that it can be brought in close contact with a reception antenna of a converter for lighting mean, such as e.g. LEDs, in order to establish a wireless communication, wherein the control circuitry and the wired control interface are powered by means of the wired control interface terminals.

Abstract: Light emitting devices and methods of integrating micro LED devices into light emitting device are described. In an embodiment a light emitting device includes a reflective bank structure within a bank layer, and a conductive line atop the bank layer and elevated above the reflective bank structure. A micro LED device is within the reflective bank structure and a passivation layer is over the bank layer and laterally around the micro LED device within the reflective bank structure. A portion of the micro LED device and a conductive line atop the bank layer protrude above a top surface of the passivation layer.

Abstract: Described herein are systems and methods for operating DC-DC regulators such as LED drivers. Various embodiments herein allow a DC-DC regulator to switch between buck mode and buck-boost mode without suffering effects otherwise resulting from transient currents when switching between modes. In certain embodiments, this is accomplished by operating the DC-DC regulator in a buck-boost mode to charge a boost capacitor with a substantially constant inductor current. The inductor current is also used to control a set of switches to operate the DC-DC regulator in a buck mode to drive a load by using the capacitor as a power source.

Abstract: The present disclosure discloses an LED bracket, including: a front bracket, wherein an LED lamp chip is provided in the front bracket; and a back bracket, wherein the back bracket is connected to the front bracket, and a diffusion material is provided on a side of the back bracket away from the front bracket, wherein the LED lamp chip can emit light from the front bracket and light emitted from a direction close to the back bracket passes through the diffusion material and then goes out from the back bracket. In the present disclosure, the front bracket is provided, the back bracket is additionally provided on the front bracket, the diffusion material is provided on the back bracket.

Abstract: An automated dimming load controller automatically measures the relationship between the current draw and the dimmer setting for each light or group of lights connected to the load controller. Once measured, the relationship between the current draw and the dimmer setting can be used to enable the dimmer controller to adjust the lights between their minimum and maximum effective illumination. This automatic setting of the dimmer controller may be performed regularly to accommodate changes in performance or replacement of any of the connected lights, drivers or ballasts.

Abstract: A lighting control system for controlling a cumulative light emitted by a lighting fixture having a plurality of LED light sources may comprise a plurality of LED drivers adapted to be coupled to a respective one of the LED light sources and configured to control an intensity of the respective LED light source, and a controller configured to transmit a single digital message for controlling the cumulative light emitted by the lighting fixture. Each of the plurality of LED drivers is configured to adjust the intensity of the respective LED light source to a preset intensity in response to the single digital message transmitted by the controller.

Abstract: Multiple current sources are coupled in series to corresponding light-emitting elements. Switching converter supplies driving voltage to the multiple light-emitting elements and current sources. Pulse modulator generates pulse signal that transits to on level when the smallest from among voltages across both ends of the multiple current sources falls to bottom limit voltage, and subsequently transits to off level. Frequency stabilization circuit controls pulse modulator such that the frequency of pulse signal approaches its target. Dummy load circuit is configured to lower driving voltage in the enable state, to be set to the enable state when switching transistor continues to be off for a predetermined time, and to be set to the disable state in response to the next turn-on of the switching transistor.

Abstract: A lighting apparatus includes a light source, a rectifier circuit, a DC-DC converter, an adjustment circuit and a controller. The rectifier circuit converts an AC power to a raw direct current. The adjustment circuit provides an adjustment signal corresponding a light intensity setting of the light source. The controller is coupled to the DC-DC converter and the adjustment circuit. The controller receives the adjustment signal for generating a first PWM signal. The DC-DC converter receives the first PWM signal. The DC-DC converter converts the raw direct current to an output current according to a first duty ratio of the first PWM signal. The output current is supplied to the light source corresponding to the light intensity setting.

Abstract: A traffic light assembly is disclosed with red, amber and green lights. While light is being emitted, a flashing sequence pattern is generated within the area to enhance the meaning of the signal communicated to the driver. The sequence pattern is formed by changing the colour of light emitted, and or by ceasing to emit light. An intermediate pattern that is different in configuration from any of the sequence patterns is provided at a transition between at least one of the red, amber and green lights to further communicate to the driver that the light signal is about to change and that action is about to be required.

Abstract: The systems and methods disclosed herein include a LED driver, including a current output module configured to generate a constant current output split between a plurality of output channels, each output channel connected to one or more LEDs having an associated CCT value, at least one switch encoding a plurality of lumen settings and a plurality of CCT settings, and at least one circuit coupled to the current output module and the switch, the at least one circuit configured to determine a first lumen setting from the plurality of lumen settings encoded by the at least one switch, adjust the constant current output of the current output module based on the first lumen setting, determine a first CCT setting from the plurality of CCT settings encoded by the at least one switch, and adjust the plurality of output channels of the current output module based on the first CCT setting.

Abstract: Systems, apparatuses, and methods are described for a privacy blocking device configured to prevent receipt, by a listening device, of video and/or audio data until a trigger occurs. A blocker may be configured to prevent receipt of video and/or audio data by one or more microphones and/or one or more cameras of a listening device. The blocker may use the one or more microphones, the one or more cameras, and/or one or more second microphones and/or one or more second cameras to monitor for a trigger. The blocker may process the data. Upon detecting the trigger, the blocker may transmit data to the listening device. For example, the blocker may transmit all or a part of a spoken phrase to the listening device.

Abstract: A light source driving method is applied to a light source driving module electrically connected to a light source and a controller. The light source driving module includes a frequency setting module, a driving circuit, and a conversion module. The frequency setting module generates a frequency setting signal according to a switching signal. The driving circuit generates a light source driving signal after receiving the switching signal and a current control signal. The conversion module selectively generates a driving current flowing through the light source in response to the light source driving signal. The driving current increases continuously during a rising duration, and the light source driving signal has a first operating frequency during the rising period. The driving current remains unchanged during a stable duration, and the light source driving signal has a second operating frequency during the stable period.

Abstract: A method (700) of controlling one or more lighting devices (120, 122, 124) is disclosed.

Abstract: A system of light devices including a first light device and a second light device. The first light device having a first housing, a first light, a first transceiver, a first electronic processor. The second light having a second housing, a second light, a second transceiver, a second electronic processor. The first electronic processor is coupled to the first light and the first transceiver, and configured to control operation of the first light, and transmit, via the first transceiver a command to the second light device. The second electronic processor coupled to the second light and the second transceiver, and configured to receive, via the second transceiver, the command from the first light device, and change an operational parameter of the second light in response to the command from the first light device.

Abstract: A current source and/or current sink digital-to-analog converter (DAC) includes a DAC circuit that converts a digital code to an analog current or voltage signal, an optional transconductance circuit that converts a voltage output of the DAC circuit into a current signal, and an output circuit that amplifies a current output of the DAC circuit or optionally amplifies a current output of the transconductance circuit to set a desired high current output for application to an output of the current source and/or current sink DAC. A power supply control current may be coupled to a power supply circuit that supplies power to the output circuit of the current source and/or current sink DAC. The power supply control current adjusts the output of the power supply circuit to cause the current source and/or current sink DAC to operate at a higher power efficiency.

Abstract: System and method for controlling one or more light emitting diodes. For example, the system includes: a power supply controller configured to receive a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge, the power supply controller being further configured to generate a first signal based at least in part on the cathode voltage; and a driver configured to receive the first signal and generate a second signal based at least in part on the first signal, the driver being further configured to output the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to the driver and a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode.

Abstract: An electrical load set circuit and apparatus having at least three control signal lines arranged in parallel, a pair of polarized electrical loads connected between two of the signal lines, and another electrical load connected between a different control signal line and one of the polarized loads. Individual ones of the electrical loads can be selectively activated without requiring an additional common (ground) line. At least two of the control signal lines can be kept in a floating state. A light strip includes plural light set circuits spaced along the control signal lines. In another variation, first and second light points are spaced along the three control signal lines, each including three different color LEDs respectively. Further variations include display devices having rotating and slit patterns of illumination.

Abstract: A two-way load control system comprises a power device, such as a load control device for controlling an electrical load receiving power from an AC power source, and a controller adapted to be coupled in series between the source and the power device. The load control system may be installed without requiring any additional wires to be run, and is easily configured without the need for a computer or an advanced commissioning procedure. The power device receives both power and communication over two wires. The controller generates a phase-control voltage and transmits a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage. The power device transmits a reverse digital message to the controller via the power wiring.

Abstract: A projector includes a first cooling device configured to cool a first cooling target based on transformation of a refrigerant into gas, a second cooling device configured to cool a second cooling target, and a heat conduction member. A refrigerant generator of the first cooling device includes a moisture absorbing and desorbing member, a first blower, a heat exchanger, and a second blower configured to send the air to the heat exchanger. The second cooling device includes a third blower and a circulation path through which the air circulates between the third blower and the second cooling target. The heat conduction member includes a heat absorber configured to absorb heat radiated from the second cooling target and a heat dissipator disposed on the inside of the first cooling device. The heat radiated from the heat dissipator is transferred to the moisture absorbing and desorbing member.

Abstract: A display apparatus comprising a pixel provided on a substrate, the pixel including a first subpixel, a second subpixel, and a third subpixel which are arranged to be adjacent to each other and are configured to generate light components of colors different from each other, and the first, second and third subpixels comprise an organic compound layer including a light emission layer, wherein letting I1, I2, and I3 be driving current amounts of the first, second and third subpixels when generating white light of a predetermined luminance, if I1>I2>I3 holds, a current leakage between the first and third subpixels is limited as compared to that between the second and third subpixels.

Abstract: A luminescent material includes a particle of an irregular shape. The particle of an irregular shape includes a core of an irregular shape and quantum dots. The quantum dots distribute on the core.

Abstract: A method and illumination device are provided for interference-resistant compensation in light emitting diode (LED) illumination devices. In one embodiment, the method includes bringing to a level insufficient to produce illumination the respective drive current of all except one of multiple emission LED elements for the duration of a first measurement interval and a later-occurring second measurement interval. The first and second measurement intervals are within respective first and second series of measurement intervals interspersed with periods of illumination, and the first and second series of measurement intervals are separated by respective first and second offsets from a timing reference. An embodiment of an illumination device includes multiple emission LED elements, one or more photodetectors, and a lamp control circuit, where the lamp control circuit is adapted to perform steps of the method.