Abstract: A tubular LED light source, based on a tube manufactured in a heat conducting material (1). The LED's (2) are mounted on a part of the outer surface of the tube. Thereby they conduct their heat to the tube, which transfers the heat to the surroundings by cooling fins (6) located on the other part of the outer surface of the tube. Inside the tube the control electronic (7) is placed. It is electrically connected with the LED's on the outer surface of the tube, and with connectors (10) in each end of the tube. The connectors makes it possible to install the light source in existing fluorescent tube fittings, as a direct replacement for fluorescent tubes. There is vacuum (20) inside the tube, so that no damaging condensed water is generated in cold environments. The control electronics can turn on/off and adjust the light level from LED's, and adjust the color components (RGB) of the light. Hereby different color temperatures can be generated.

Abstract: An LED lighting device can compensate a brightness change and a color change caused by a temperature change and exhibit an in-plane uniform luminance and color. A lighting device includes: at least one line connected in parallel, a constant voltage source for applying a constant voltage to the line, an ON/OFF controller, and a current detector for measuring a value of current flowing in the line. The line is formed by one or more light-emitting diodes and a switch for turning ON/OFF the current flowing in the light emitting diodes connected in series. According to the current value of each of the lines measured by the current detector, the ON/OFF controller controls the ON/OFF period of the switch of each of the lines.

Abstract: A cap lamp features a housing. A control module is positioned within the housing and includes a multi-function switch, a circuit board and contacts adapted to receive power from a battery. An optic module is also positioned within the housing and in engagement with the control module. The optic module includes a light emitting diode (LED) module and an integrated reflector and heat sink as well as an insulator. A bezel is fastened to the housing so as to secure the control module and optic module within the cap lamp housing. A pushbutton is positioned on the housing and is connected to the multi-function switch. A backup LED is in communication with the multi-function switch so that the main LED light or the backup LED may alternatively be selected.

Abstract: A lighting emitting diode (LED) lamp (100) includes a first LED array (60) and a second LED array (50). A ratio of change of relatively luminous intensity relative to change of temperature of the first LED array is less than that of the second LED array. A first heat sink (10) thermally attaches to the first LED array. A second heat sink (20) thermally attaches to the second LED array. An active heat dissipating device (80) is in combination with the second heat sink for enhancing a heat dissipation efficiency of the second heat sink, and thus the heat dissipation efficiency of the second heat sink is greater than that of the first heat sink. The heat dissipation of the second LED array is much quicker than that of the first LED array. The second LED array thus can be kept working at a much less temperature.

Abstract: A light source module including a circuit substrate, light emitting chip packages, and driving devices is provided. The circuit substrate has a top surface and a bottom surface opposite to the top surface. The bottom surface has at least one component installed area and at least one metal exposed area. The light emitting chip packages are disposed on the top surface. The driving devices are disposed in the component installed area. The driving devices are electrically connected to the light emitting chip packages through the circuit substrate.

Abstract: Isolation IR heat lamp module and method of firing multi-zone IR furnaces for solar cell processing comprising lamps disposed in individual parallel channels in a reflector/insulator body to provide a cooling air channel surrounding each tube; the channels are covered with IR-transmissive plate material to isolate each lamp from adjacent lamps and the process zone. Cooling air is exhausted and recycled upstream for energy conservation. Lamp spacing can be varied and power to each lamp individually controlled to provide infinite control of temperature profile in each heating zone. For a spike zone, and in combination with downstream quench control and annealing zones, steep heating and cooling curves with very short dwell (sharp) peak temperature profiles permit faster throughput due to operation of the lampsm at essentially 100% rated capacity, at a 2× or greater heating and throughput rate without compromising lamp life, while producing solar cells with improved output efficiency.

Abstract: The neck of a typical PAR lamp tends to focus the light issued in the neck or heel of the lamp back onto the lamp seals. The focused lost light then tends to overheat the seal and shorten lamp life. A practical solution is to intercept this lost light with a light absorbing layer. The light is then converted to heat in the layer. The heat is then re-radiated in an unfocused fashion with only a small portion of it redirected to the seal area. The interception layer may be formed as a black top coating on the neck interior or the neck exterior if the reflector is otherwise light transmissive. Alternatively, the neck may be formed from a translucent or opaque material that then converts the light into heat in the body of the reflector wall. The neck is then specifically not metallized so as to reflect light from the internal neck surface back to the lamp seal.

Abstract: An apparatus and method for monitoring and controlling the internal state of a computer system, in particular, a computer server. The computer system includes one or more subsystems. These subsystems provide one or more management signals at a system management slot. The computer system also includes an I/O bus slot coupled to an I/O bus of the computer system. A system management agent is coupled to both the system management slot and the I/O bus slot. The system management agent includes a processor and a memory system coupled to the processor. The system management agent also includes a communications interface coupled to the processor and the memory system.

Abstract: A compact integral permanently assembled lamp unit comprising a fluorescent lamp, resistor ballast, starter means, and end connectors for connecting a plurality of lamps together.