A light-emitting diode driving module includes an LED driving circuit to activate light-emitting diodes driven by a modified rectified voltage, and to adjust driving currents conducted to driving nodes to the light emitting diodes; a driving current controller to receive a dimming signal indicative of a degree of modulation of the rectified voltage, and to control currents conducted to the driving nodes depending on the dimming signal; and a current blocking circuit to block the currents of the driving nodes when a dimming level of the dimming signal decreases lower than a first threshold value, and unblock the currents of the driving nodes when the dimming level increases above a second threshold value higher than the first threshold value.

An anti-flicker and anti-glow switchable load apparatus to be installed in the light socket of a commonly powered electronic switching device, such as a motion activated light switch. An energy efficient light bulb or lamp, such as a cathode fluorescent lamp or light emitting diode is then electrically connected to the apparatus. A first embodiment of the present invention includes a switchable light source, a switchable load, a controller, and a voltage sensor. When the present invention in the first embodiment detects a higher voltage, thus indicating the lamp has been switched from the off state to the on state, the switchable load is disconnected, and the current is re-routed to pass through the energy efficient lamp.

An anti-flicker and anti-glow switchable load apparatus to be installed in the light socket of a commonly powered electronic switching device, such as a motion activated light switch. An energy efficient light bulb or lamp, such as a cathode fluorescent lamp or light emitting diode is then electrically connected to the apparatus. A first embodiment of the present invention includes a switchable light source, a switchable load, a controller, and a voltage sensor. When the present invention in the first embodiment detects a higher voltage, thus indicating the lamp has been switched from the off state to the on state, the switchable load is disconnected, and the current is re-routed to pass through the energy efficient lamp.

An image projection apparatus is configured to project an image using light from a light source and includes a controller configured to control a power supplied to the light source, and a light source state acquirer configured to acquire light source state information representing a state of the light source. The controller controls the power based on the light source state information acquired before or after the power is reduced so that a light amount of the light source does not fall below a predetermined light amount, in reducing the power so as to darken the image according to information on a brightness of the image.

An image projection apparatus is configured to project an image using light from a light source and includes a controller configured to control a power supplied to the light source, and a light source state acquirer configured to acquire light source state information representing a state of the light source. The controller controls the power based on the light source state information acquired before or after the power is reduced so that a light amount of the light source does not fall below a predetermined light amount, in reducing the power so as to darken the image according to information on a brightness of the image.

A controller (100) for creating a dynamic light effect and controlling a lighting device (120) according to the dynamic light effect, the controller comprising: a user interface (104) for receiving user input, a display unit (108), a processor (106) for rendering, on the display unit (108), a graphical representation of the lighting device in an area of an image at a first position, the first position being associated with first color information, and for setting, upon receiving a first user input via the user interface (104), the graphical representation in a first state, wherein the graphical representation moves across the area of the image from the first position to a plurality of subsequent positions over a period of time, the plurality of subsequent positions being associated with subsequent color information, and for generating one or more lighting control commands (110) based on the first color information and the subsequent color information, and a communication unit (102) for communicating the generated one or more lighting control commands (110) to the lighting device (120), so as to control the light output of the lighting device (120) according to the first color information and the subsequent color information subsequently over the period of time. A corresponding computer implemented method for for creating a dynamic light effect is also claimed.

A constant output current LED driver is disclosed. The driver is capable of operating with a wide range of input direct current (DC) voltage, and is configured with a full bridge inverter, an auxiliary circuit, and a voltage current converter. The full bridge inverter and auxiliary circuit collectively operate to provide a phase shift controller for the LED driver system. The LED driver operates under zero voltage switching (ZVS) for all switches in the LED driver circuit for all of the input voltage levels and for all of the output voltage levels. By maintaining ZVS in all conditions, the system can operate at very high frequency and be compact yet still achieve high power density. The resulting topology is applicable for a wide range of constant output current LED drivers. Switchable loads other than LEDs can also be driven.

System and/or method generally relate to extending a lifespan of an excimer lamp. The system includes a ultra-violet (UV) light having a pair of dielectrics configured to separate electrodes. One of the electrodes includes a metal mesh. The system includes a power supply electrically coupled to the UV light and configured to deliver electrical power to the UV light. The system includes a temperature sensor operably coupled to the UV light. The temperature sensor is configured to generate a temperature signal indicative of a temperature of the UV light. The system includes at least one processor. The at least one processor is configured to determine a temperature of the UV light based on the temperature signal, and adjust the electrical power delivered to the UV light based on the temperature signal.

System and/or method generally relate to extending a lifespan of an excimer lamp. The system includes a ultra-violet (UV) light having a pair of dielectrics configured to separate electrodes. One of the electrodes includes a metal mesh. The system includes a power supply electrically coupled to the UV light and configured to deliver electrical power to the UV light. The system includes a temperature sensor operably coupled to the UV light. The temperature sensor is configured to generate a temperature signal indicative of a temperature of the UV light. The system includes at least one processor. The at least one processor is configured to determine a temperature of the UV light based on the temperature signal, and adjust the electrical power delivered to the UV light based on the temperature signal.

System and/or method generally relate to extending a lifespan of an excimer lamp. The system includes a ultra-violet (UV) light having a pair of dielectrics configured to separate electrodes. One of the electrodes includes a metal mesh. The system includes a power supply electrically coupled to the UV light and configured to deliver electrical power to the UV light. The system includes a temperature sensor operably coupled to the UV light. The temperature sensor is configured to generate a temperature signal indicative of a temperature of the UV light. The system includes at least one processor. The at least one processor is configured to determine a temperature of the UV light based on the temperature signal, and adjust the electrical power delivered to the UV light based on the temperature signal.