Abstract: A laser projection module is provided. The laser projection module includes a substrate assembly, a lens barrel assembly, a light source, a diffractive optical element and a collimation element. The lens barrel assembly includes a lens barrel and a stop member connected to the lens barrel. The lens barrel is disposed on the substrate assembly and configured to define a receiving cavity together with the substrate assembly. The light source is disposed on the substrate assembly, accommodated in the receiving cavity, and configured to emit laser to the receiving cavity. The diffractive optical element and the collimation element are accommodated in the receiving cavity. The light source, the collimation element and the diffractive optical element are sequentially disposed in an optical path of the light source. The stop member is configured to prevent the diffractive optical element from moving in a light-emitting direction of the laser projection module.

Abstract: A spotlight system including a spotlight continuously rotatable about a spotlight pan axis and tiltable about a spotlight tilt axis. The system includes a spotlight controller including a housing continuously rotatable about a controller pan axis. The housing has a circumferential lip that engages with a fixed based and a hub engaged with a handle. The handle rotates about a controller tilt axis perpendicular to the controller pan axis. A controller board is electrically connected to a slip ring that penetrates the base, with a pan input sensor, a tilt input sensor, and a microprocessor. The pan input sensor measures the position of the housing relative to the base, the tilt input sensor measures the position of the handle relative to the housing, and the microcontroller interprets the positions and generates control signals corresponding to the direction of a spotlight.

Abstract: Various improvements are provided to resonant DC/DC and AC/DC converter circuit. The improvements are of particular interest for LLC circuits. Some examples relate to self-oscillating circuit and others relate to converter circuits with frequency control, for example for power factor correction, driven by an oscillator.

Abstract: The present application relates to an adaptive filter using manageable resource sharing and a method of operating the adaptive filter. The adaptive filter comprises a cluster controller configured for allocating each of several computational blocks to one of several clusters and a routing controller for configuring the routing of tapped delay signals by a routing logic to the respective cluster in accordance with an allocation of the tapped delay signals to the clusters. Each of computational blocks is configured for adjusting one filter coefficient, ci(n), in one cycle of an iterative procedure according to an adaptive convergence algorithm. The number of computational blocks is less than an order of the adaptive filter.

Abstract: The embodiment of the present invention discloses a control device of a display panel and a control method, wherein the control method of the display panel comprises: detecting a temperature of a chip of a source driver of the display panel, and to generate a notification signal according to the temperature; obtaining a temperature of the notification signal, and generating a control signal according to the temperature if the temperature exceeds preset temperature range thresholds; switching a polarity inversion manner of the display panel according to the control signal. The present invention adjusts the power consumption of the display panel by adjusting the polarity inversion manner so that the display panel can work with the proper power consumption. Thus, the chip of the source driver can be ensured to be in the normal work temperature range to guarantee the normal operation of the display panel and decrease of the failure.

Abstract: The present disclosure relates to a lighting fixture that is capable of providing white light over an extended range of correlated color temperatures.

Abstract: A flexible LED lighting module includes a flexible housing and flexible PCB to which LED units are mounted. An encapsulant fills a channel of the flexible housing and has a same or similar optical refractive index value as is used in the LED unit to hold phosphorous particles used for coloring of the LED. Use of the encapsulant changes the color of the light ultimately emitted from the flexible LED lighting module, and this factor is corrected for in calibration processes associated with the flexible LED lighting module.

Abstract: An illuminating apparatus includes a first light source that emits blue laser light, a light emitting section that emits light by being irradiated with the blue laser light, a second light source that emits green laser light, a biaxial MEMS scanner that irradiates a part of the light emitting section with the green laser light, and a convex lens that projects the light emitted from the light emitting section to the outside.

Abstract: A lighting system of a vehicle is provided herein. The lighting system includes a structure of the vehicle and a spotlight having a body coupled to the structure. A light assembly is disposed inside the body and is configured to project a light beam outwardly from the body. The operation of the light assembly and the directionality of the light beam is based on input from a remote device.

Abstract: A lighting control system allows user control of the color features of controllable light fixtures. Controlled color features may include the color, color temperature, tint, or other qualities related to the color of the light. Control of the color features may be independent from control of the intensity of the light fixtures. The system may use light-emitting diode (LED) light fixtures, or fluorescent or incandescent light fixtures. The system may enable control of the color feature using a controllable driver/ballast and a dimmer control. The color feature may be adjusted along a color path of adjacent values in a suitable color space model.

Abstract: A lighting system includes a power converter connected to mains voltage and configured to provide a driving current responsive to a control signal. A voltage measurement circuit is configured to provide a voltage sense signal indicative of an amplitude of the mains voltage. A light-emitting diode (LED) module includes at least one string of LEDs that emit light responsive to the driving current, and is configured to detect an LED current through the at least one string and output a current feedback signal indicative of the detected LED current. A driver controller is configured to output the control signal responsive to the voltage sense signal and the current feedback signal.

Abstract: Some embodiments include a model builder system that generates a color model to facilitate a color tunable lamp to mix the right amount of light from various color channels to reproduce a target color characteristic of a reference lamp. The model builder system can perform pre-computations that characterize the perceived characteristic of individual color channels and the reference lamp. The model builder system can divide the color channels of the color tunable lamp into floating channels and non-floating channels. Holding the operating points of the non-floating channels constant, the model builder system inverse solves for the necessary flux values of the color channels to reproduce the target color characteristic and to optimize color metrics.

Abstract: Light flux levels sensed from a color LED array control both current availability to the array and disable/re-enable a current bypass switch to shunt stored-energy current to or away from a selected LED. In continuous mode, a single flux pulse is created for the duration of a pre-established period. Feedback from the flux sensor pulses current to an energy storage device to maintain the light flux at a predetermined set-point. A particular dimming level is achieved by establishing both the pulse period and the flux magnitude. In discontinuous mode, one or more short flux pulses are created. Both the turn-on and the turn-off time of each flux pulse is controlled by alternately removing and then re-establishing a current shunt from the energy storage device to ground. Flux pulse magnitude is controlled by recognizing when the flux pulse has reached a predetermined set-point and re-establishing the current shunt to abruptly turn off current to the selected LED.

Abstract: A lighting device includes an electrical circuit for energizing an LED light source. The electrical circuit is configured to: have a target relationship between two illuminating operational parameters of the LED, connect the LED to a power source, energize the LED with a voltage waveform to effect a current waveform, determine a magnitude of each of the two operational parameters, determine an operational relationship between the two operational parameters, compare the target relationship with the operational relationship, determine a difference between the target relationship and the operational relationship and respond to the difference by adjusting the voltage waveform such that it changes one or both operational parameters to bring the operational relationship towards the target relationship.

Abstract: A light emitting device includes: a light emitting element; and a light variable resistive element which is connected to the light emitting element in parallel and is provided at a position which is irradiated with light emitted from the light emitting element, wherein the light variable resistive element has a characteristic in which a resistance value decreases as an amount of irradiation light increases.

Abstract: An improved LED module that is thermally self-stabilizing, and that is able to be retrofitted into an existing flashlight is provided. In one embodiment, the LED module includes a light emitting diode, an amplifying circuit and a microchip. The amplifying circuit includes a temperature sensing device to sense heat from the light emitting diode. The output of the amplifying circuit is input to the microchip which output to a switching device that regulates energy that is delivered to the light emitting diode. The switching device may be part of a boosting circuit, a bucking circuit or an inverting circuit.

Abstract: A lamp assembly provides both instant light through use of an incandescent/halogen lamp source and an energy saving type light provided by a compact fluorescent lamp source. Both light sources are enclosed within a common envelope or outer bulb. The sensor member monitors a temperature of the cathode and mercury reservoir of the compact fluorescent lamp source in order to determine when to terminate power to the incandescent lamp source.

Abstract: An organic light-emitting diode has a carrier substrate. The light-emitting diode also contains an active layer that generates and emits electromagnetic radiation at a carrier front face. The active layer is mounted on the carrier substrate. At least one contacting device is located on a carrier rear face and is arranged simultaneously for electrical contacting and for mechanical attachment of the light-emitting diode. The contacting device includes a contact region. The contact region and/or the contacting device, seen in a side view parallel to the carrier rear face, are elevated in a U-shape or L-shape above the carrier rear face and/or extend in a lateral direction away from the active layer.

Abstract: A lamp including a primary light source and a secondary light source, and a secondary light source control circuit configured to provide an operating voltage to the secondary light source. The secondary light source control circuit including a resistance element having an initial resistance which changes in response to being exposed to a temperature above a predetermined threshold. The secondary light source control circuit including a charging branch resistance-capacitance time constant that is configured to change with a change in the resistance element resistance.

Abstract: An illumination device comprises a solid-state lighting device and a heat sink. The heat sink is configured to be attachable to a fixture for a gas-discharge lamp to retrofit existing gas-discharge fixtures. The heat sink is conductively thermally coupled to the solid-state lighting device to dissipate heat generated by the solid-state lighting device.

Abstract: A color tunable lighting assembly (100), a light source and a luminaire are provided. The color tunable lighting assembly (100) comprises a light emitter (110), a luminescent layer (108) and a temperature controlling means (106). The light emitter (110) emits light (112) of a first color distribution. The luminescent layer (108) receives light (112) emitted by the light emitter (110). The luminescent layer (108) comprises luminescent material to absorb a portion of the light (112) of the first color distribution and to convert a portion of the absorbed light into light (102) of a second color distribution. The second color distribution is dependent on the temperature of the luminescent layer (108). The temperature controlling means (106) actively controls a temperature of the luminescent layer (108) to obtain a light emission by the color tunable lighting assembly. The light emission has a specific color distribution.

Abstract: A portable illuminating device is provided. The device has a rechargeable battery that can be re-charged using a wide variety of power sources, making is especially appropriate for use away from conventional power sources. The device can be connected to a wide variety of fittings that allow the device to be attached to users and to other objects. In some arrangements, the device includes a CPU that manages the power voltage and the temperature of the device so that its operation can be optimized.

Abstract: An integrated photonic device includes a number of LEDs and a feedback mechanism that measures individual LED light outputs using a photo sensor via a light transmitter disposed in the vicinity of individual LEDs. A controller or driver adjusts a current driven to each LED using the detected values according to various logic based on the device application.

Abstract: A thermal compensating circuit board (TCB) assembly comprising a substrate, the substrate comprising at least one thermal compensating circuit deposited thereon, the substrate devoid of a solid state emitter, and at least one electrical connector coupled to the at least one thermal compensating circuit, the connector configured to couple with a solid state emitter assembly and/or power supply. Lighting devices comprising the TCB assembly are provided.

Abstract: An LED lamp control circuit comprises a rectifier circuit, an LED light source load, a constant current circuit, and a first temperature detect switch circuit. The LED light source load comprises at least one group of LEDs. The constant current circuit comprises at least one group of constant current source components, each of which is connected to at least one group of LEDs in the LED light source load and comprises a depletion mode field effect transistor. The first temperature detect switch circuit is connected to an input end of a power source, and comprises a first normally closed temperature detect switch mounted on a radiator. When the temperature of the radiator exceeds the disconnection temperature of the first normally closed temperature detect switch, the first normally closed temperature detect switch is disconnected, so as to cut off the power supply of the LED light source load.

Abstract: A method of sensing magnitude of lumen depreciation not only of a lamp of a lighting fixture, but other factors, by sensing a relative light level external of the lighting fixture to derive not only lamp lumen depreciation but total lumen depreciation from the fixture. An apparatus of monitoring light level of one or more lighting fixtures comprises a sensor positioned external of the lighting fixture(s), a comparator adapted to compare a measured actual lumen output signal from the sensor to a pre-set reference or threshold lumen output value. An error signal is generated by the comparator if the comparison indicates actual lumen output to have dropped below the reference or threshold lumen output. An alarm or communication can be actuated by the error signal to instruct corrective action to ensure relatively constant light levels to be maintained for the lighting system over time, thus providing ongoing assurance to the end user of proper system operation.

Abstract: A light source apparatus according to the present invention includes a circuit board; a light source mounted on the circuit board; a first temperature measurement element that measures an ambient temperature of the circuit board and outputs a first signal that represents the measured result; a second temperature measurement element that measures a temperature of the circuit board and outputs a second signal that represents the measured result; and a light source drive control section that controls driving of the light source. The light source drive control section does not drive the light source if the temperature represented by the second signal is lower than the temperature represented by the first signal.

Abstract: A drive circuit is a drive circuit for turning on an LED and includes a self-excited inverter supplying power to the LED, wherein the self-excited inverter includes thermistors, and supplies, depending on temperature dependency of the thermistors, the first power value to the LED when a temperature is the first temperature, and the second power value to the LED when a temperature is the second temperature higher than the first temperature, and the second power value is smaller than the third power value that a circuit which is not provided with the thermistors and supplies the first power value to the LED when the temperature is a first temperature supplies to the LED when a temperature is the second temperature.

Abstract: Various apparatuses and methods are disclosed for a remotely controllable LED lamp. One embodiment of an LED lamp includes at least one LED in each of a plurality of colors, a power supply, and a controller connected to the power supply and the at least one LED in each of a plurality of colors. The controller is adapted to adjust current levels to the at least one LED in each of a plurality of colors to produce a blended color. The controller is also adapted to adjustably vary an intensity of the blended color without substantially changing the blended color.

Abstract: A light emitting diode (LED) assembly is provided having a LED and a temperature sensor for monitoring a temperature of the LED. An active cooling circuit receives temperature input from the temperature sensor. The temperature input is indicative of the temperature of the LED. An active cooling system cools the LED. The active cooling system being controlled by the active cooling circuit to control a temperature of the LED.

Abstract: A light generating system comprising: a plurality of solid state emitters (SSEs) and a stability control system for controlling the spectral stability of the SSEs. In a particular case, the stability control system may comprise: a power regulator to regulate power supplied to a sub-set of the plurality of SSEs; a constant current circuit connected to the power regulator to provide a constant current to the sub-set of SSEs; a current regulation set point connected to the constant current circuit; and a controller configured to set the regulation set point based on metrology relating to the state of the SSEs.

Abstract: A fluorescent lighting device includes a ballast and a tube. An amalgam is located within the tube. A resistive heater is operatively coupled with the ballast, to receive electrical power from the ballast while the fluorescent lighting device is in an OFF state. The resistive heater is mounted near the amalgam to transfer heat to the amalgam while the fluorescent lighting device is in the OFF state.

Abstract: An integrated photonic device includes a number of LEDs and a feedback mechanism that measures individual LED light outputs using a photo sensor via a light transmitter disposed in the vicinity of individual LEDs. A controller or driver adjusts a current driven to each LED using the detected values according to various logic based on the device application.

Abstract: The invention describes a method of driving a gas-discharge lamp (1) according to conditions in a specific region (R) of the lamp (1), which gas-discharge lamp (1) comprises a burner (2) in which a first electrode (4) and a second electrode (5) are arranged on either side of a discharge gap, which lamp (1) is realised such that the position (PCs) of a coldest spot during an AC mode of operation is in the vicinity of the first electrode (4), which method comprises the steps of initially driving the lamp (1) in the AC mode of operation; monitoring an environment variable of the lamp (1), which environment variable is indicative of conditions in a specific region (R) of the lamp (1); switching to a temporary DC mode of operation at a DC power value on the basis of the monitored environment variable, whereby the first electrode (4) is allocated as the anode; and driving the lamp (1) in the DC mode of op eration until the monitored environment variable has returned to an intermediate environment variable threshold

Abstract: The invention relates to a light module for electrical and thermal attachment to an energy infrastructure having at least one power supply, each power supply comprising two electrodes, said light module comprising a light source to emit light, wherein the light source is a heat source when emitting light, two electrical contacts to contact the electrodes of the at least one power supply and thereby establishing the electrical attachment between the light module and the energy infrastructure, a control system arranged between the light source and the electrical contacts to control a power supplied to the light source, wherein the light module comprises a measurement system to measure a thermal resistance of the thermal attachment between the light module and the energy infrastructure when establishing the electrical attachment, and wherein the control system is configured to reduce the power supplied to the light source when the thermal resistance is above a predetermined value to protect the light module from

Abstract: It is an object to provide a medical light source device capable of securing a long illumination time required to use in operations in the medical field, and the medical light source device that is worn on the body of an operator to apply light to a target portion of the medical treatment is to cause an illumination section 81 to be worn on the body of the operator with a holder 7, and is provided with an acceleration sensor 80 that detects a motion of the operator, where a control section 84 controls a supply of current from a power supply section to the illumination section 81, while controlling to reduce illuminance of the illumination section 81 or to halt the passage of current to the illumination section 81 when the acceleration sensor 80 detects acceleration of a predetermined value or more.

Abstract: A rotation angle regulating device and a rotatable lamp using the same are provided. Through N passive rotating elements used for regulating the rotation angle, the rotation angle of the active rotating element relative to the fixing element is increased, wherein N is a positive integral equal to or more than 1. In addition, each passive rotating element has a first stopper and a second stopper. The active rotating element, when rotating, drives and makes the passive rotating elements rotating on the fixing element, so that the rotation of the lamp can be stopped at any designated angle through the operations of the first and second stoppers of each passive rotating element.

Abstract: A microwave-excited ultraviolet lamp system includes a microwave chamber supplied with cooling air from an air source. At least one of a pressure sensor or a temperature sensor is positioned within the system to sense a pressure associated with the flow of cooling air or a temperature of the lamp system. A control receives a signal from the sensor and is operable to adjust the flow of cooling air from the source to obtain a desired cooling air flow rate.

Abstract: Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing.

Abstract: The present invention is directed to an illumination system adaptable to a cooling appliance. The illumination system includes a lighting module, a mode switch and a controller. Specifically, the lighting module includes at least one lighting device; the mode switch is used to determine a power mode for the lighting module; and the controller provides corresponding power to the lighting device according to the power mode. In one embodiment, the illumination system further includes a heating module having a heater for providing heat to the controller. In another embodiment, the lighting device is disposed near the controller.

Abstract: Techniques are disclosed for controlling the light output of a lamp, where lamp efficacy is estimated as a function of estimated lamp temperature and instantaneous input power, or as a function of estimated lamp temperature only. Whether efficacy is estimated as a function of temperature and power, or as a function of temperature only can depend on changes in the lamp operating scenario. The techniques estimate lamp temperature by tracking energy input to and losses from (losses such as radiation, conduction, emission) the lamp arc tube, and determine the corresponding instantaneous light producing ability. The techniques may further be implemented to deliver the appropriate power command to obtain a desired light output. The techniques can be applied towards a general control in which arbitrary or custom light output vs. time paths are produced, and may be implemented by a processor programmed or otherwise configured to execute the desired control scheme.

Abstract: A fluorescent lamp driving method drives a fluorescent lamp by using an alternating current driving signal generated by an inverter circuit using direct current power as an input. The driving signal is supplied from the inverter circuit to a load including the fluorescent lamp. The method includes the steps of, by using a sum current detecting circuit, detecting a current change in the signal, by using a control circuit, controlling the driving signal generated by the inverter circuit on the basis of the current change detected by the sum current detecting circuit, and controlling a current of the supplied signal to be constant, by using a temperature detecting circuit, detecting the temperature of the fluorescent lamp, and, by using a correction circuit, on the basis of the temperature of the fluorescent lamp detected by the temperature detecting circuit, correcting the controlling the current of the supplied signal to be constant.

Abstract: A lighting control system determines an optimal way to operate one or more lamps to achieve a desired light output and/or to control one or more parameters. The lighting control system includes a detection circuit and a control circuit. The control circuit performs a wide-scope scan and a narrow-scope scan to find the best way to operate the lamps. The wide-scope scan includes driving the lamp(s) using multiple output settings, evaluating the light output at each setting, and determining which setting produced the best results. The narrow-scope scan includes making small adjustments to the settings to better refine the light output. The detection circuit includes one or more sensors for providing measurements of the light output by the lamp(s) or of a controller parameter, such as power consumption, for each setting evaluated by the control circuit.

Abstract: An integrated Light Emitting Diode (LED) device including multiple LEDs connected to a circuit board, integrated circuit (IC) drivers connected to the circuit board, and a first alternating current (AC) terminal and a second AC terminal connected to the circuit board.

Abstract: A laser module capable of being connected onto a circuit board includes a main body having a front opening, a rear opening, and an inner wall, a focusing lens connected in the front opening, a housing mounted to the exterior of the main body and enclosing the main body, with one end of the housing corresponding to the focusing lens having a through hole and the other end having an opening to accommodate the insertion of the main body into the housing.

Abstract: A lighting apparatus is provided which includes a drive section which applies electric current to a light source which is a semiconductor element emitting light with application of electric current, at least one heat sink which is mounted with the light source and transfers heat generated by the emission of the light source, and a temperature measurement section which is mounted to the heat sink and measures temperature of the heat sink which is used for estimating temperature of the light source. The light source and the drive section are mounted to the same heat sink or to the heat sinks which are thermally coupled to each other.

Abstract: The disclosed pan-tilt spotlight is a sealed, remote controlled unit which allows continuous 360° rotation (pan) of visible or infrared (IR) light sources as well as vertical (tilt) aiming of the light sources 65° above horizontal and 25° below horizontal. The light sources are solid state (LEDs) which are energy efficient and extremely durable in the field, requiring little maintenance. Light shields are employed to control stray light, thereby enhancing the stealth of the spotlight in covert operations. The rotating parts of the spotlight are supported at several locations spaced from the axis of rotation in a manner that re-directs forces that would otherwise be carried by the shaft. Temperature sensitive current regulators and robust thermal design protect the LEDs from heat damage. Sophisticated motor control allows fast and precise positioning of the light beam and worm final drive gears keep the light beam in position.

Abstract: A monitoring system has integrated exit signs, which preferably have electroluminescent elements. The signs connect to internal wiring of a building, but local power sources can provide emergency power if building power is lost. Controllers on the signs communicate with a central workstation using building wiring and/or wireless communication. The controllers have one or more automated features for monitoring operation of the exit signs and the surrounding environment. These automated components, including an intensity sensor, an ambient light sensor, a temperature sensor, a smoke detector, a camera, a speaker, a microphone, a motion detector, an RFID detector, and the like. Because the signs are widely distributed throughout the building, operators can get detailed information of the building environment, security, fire, smoke, temperature, etc. The exit signs can store this information locally and can communicate useful information using a communication link to the central workstation.

Abstract: The invention relates to a light module for electrical and thermal attachment to an energy infrastructure having at least one power supply, each power supply comprising two electrodes, said light module comprising a light source to emit light, wherein the light source is a heat source when emitting light, two electrical contacts to contact the electrodes of the at least one power supply and thereby establishing the electrical attachment between the light module and the energy infrastructure, a control system arranged between the light source and the electrical contacts to control a power supplied to the light source, wherein the light module comprises a measurement system to measure a thermal resistance of the thermal attachment between the light module and the energy infrastructure when establishing the electrical attachment, and wherein the control system is configured to reduce the power supplied to the light source when the thermal resistance is above a predetermined value to protect the light module from

Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.