Abstract: A molding lens with indentations for measuring eccentricity and a method for measuring eccentricity thereof are disclosed. At least one indentation concentric with an optical surface is respectively disposed on a front plane and a rear plane of the molding lens on area outside the optical surface while the indentation is observed by means of a measuring microscope. Moreover, the eccentricity of the molding lens is detected by eccentricity test function of the measuring microscope and the eccentric direction is defined so as to modify the lens mold and replace conventional eccentricity test that uses a transmission eccentric scale indicator in combination with a jig. Thus the cost of test equipment is reduced, test procedure is simplified and efficiency of mold modification is improved. Therefore, it's more convenient to manage manufacturing of the lens.

Abstract: A driving device for driving a light source module (12), includes an inverter circuit (15) for converting a received signal to a signal driving the light source module, a feedback and filter circuit (13) for feeding back currents flowing through the light sources and filtering radio frequency interference (RFI) signals of feedback currents, and a controller (14) electrically connected between the feedback and filter circuit and the inverter circuit. The feedback and filter circuit includes at least one filter for filtering the RFI signals of the feedback currents, and a resistor (R) for feeding back the current flowing through the light source module. The filter includes an impedance (Z11) including a first terminal designated as an input of the filter and a second terminal, and a capacitor (C11). The capacitor includes a third terminal designated as an output of the filter and a fourth terminal electrically connected to ground.

Abstract: A driving device for driving a plurality of lamps each including a first terminal and a second terminal, includes a power stage circuit (202), a transformer circuit (204) electrically connectable to the power stage circuit, and a current balancing circuit (206) to balance current of the lamps. The current balancing circuit includes a plurality of current balancing components each comprising two inputs and two outputs. The number of the current balancing components is defined as n, where n is an integer from 2 to n. The inputs of the first current balancing component are electrically connected to a terminal of the transformer circuit. The inputs of the nth current balancing component are electrically connected to the outputs of the (n?1)th current balancing component. The outputs of each current balancing component are respectively electrically connected to the first terminals of two of the lamps.

Abstract: A smoke exhauster includes one or more rails for attaching to a supporting surface, and a housing having one or more slots for slidably receiving the rails and for easily and readily and detachably attaching the housing to the rail or the supporting surface. The rail includes an anchoring member, such as a projection extended from the rail, and the housing includes another anchoring member, such as a depression formed in the housing for engaging with the projection and for detachably anchoring the housing to the rail. The rail includes one or more securing panels for securing to the supporting surface with fasteners, and a base panel having a number of apertures for engaging the fasteners.

Abstract: A smoke exhauster includes a housing having one or more openings formed in a bottom plate and having three or more protrusion extended from the bottom plate and arranged around the opening of the housing, and one or more fan devices engaged in the housing. A net device includes an outer peripheral frame, an inner peripheral frame, and a number of ribs extended between the outer peripheral frame and the inner peripheral frame, the outer peripheral frame is detachably engaged with the protrusions for allowing the net device to be attached to the housing without fasteners. The protrusions each may include one or more notches for receiving the outer peripheral frame of the net device.

Abstract: A system for driving a lamp module (13) includes a converter (11), a driving circuit (12), and a pulse width modulation (PWM) controller (14). The lamp module includes a plurality of lamps. The converter converts a received voltage to a direct current (DC) voltage. The driving circuit converts the DC voltage to an alternating current (AC) voltage. The PWM controller is connected between the converter and the lamp module, for regulating the DC voltages outputted from the converter according to current flowing through the lamps of the lamp module. In one embodiment, the system includes a bus inverter controller. The bus inverter controller is connected between the driving circuit and the lamp module, for regulating a working frequency thereof and controlling the AC voltage outputted from the driving circuit when the lamps are turned on. The system has a reduced number of PWM controllers and a relatively low cost.

Abstract: A driving device for driving a plurality of lamps each including a first terminal and a second terminal, includes a power stage circuit (202), a transformer circuit (204) electrically connectable to the power stage circuit, and a current balancing circuit (206) to balance current of the lamps. The current balancing circuit includes a plurality of current balancing components each comprising two inputs and two outputs. The number of the current balancing components is defined as n, where n is an integer from 2 to n. The inputs of the first current balancing component are electrically connected to a terminal of the transformer circuit. The inputs of the nth current balancing component are electrically connected to the outputs of the (n?1)th current balancing component. The outputs of each current balancing component are respectively electrically connected to the first terminals of two of the lamps.

Abstract: A driving device for driving a light source module (34) includes a power stage circuit (31), a transformer and resonance circuit (32), a current balancing circuit (33), a voltage sensing circuit (35) and a PWM controller (37). The power stage circuit converts a received direct current (DC) signal to an alternating current (AC) signal. The transformer and resonance circuit converts the AC signal to an appropriate signal to drive the light source module. The current balancing circuit is connected between the transformer and resonance circuit and the light source module, for balancing current flowing through the light source module. The voltage sensing circuit is connected to the transformer and resonance circuit, for sensing a voltage level of the appropriate signal provided to the light source module. The PWM controller is connected between the voltage sensing circuit and the power stage circuit, for controlling output thereof according to the sensed voltage level.

Abstract: A method and an apparatus for designing user interface are disclosed. The method is processed by a user interface processing program installed in an electronic device and comprises following steps. First, at least one key is provided. Then, a menu is provided, wherein the menu is a tree structure having a root node and a plurality of connected nodes, at least one sub-node family can be derived from each node, wherein for each node it is defined one of a property, at least one key to receive, a picture to display, and an action to execute, or the combination thereof. Afterwards, a display for displaying the picture of the node is provided, wherein key is suitable for moving the node to an adjacent node.

Abstract: A driving device for driving a light source module (32) includes a switch circuit (30), a transformer circuit (31), a voltage sensing circuit (34), a current sensing circuit (35), and a PWM controller (33). The switch circuit converts a received direct current (DC) power signal to an alternating current (AC) signal. The transformer circuit converts the AC signal to an appropriate signal to drive the light source module. The voltage sensing circuit receives the DC power signal and senses a voltage level of the DC power signal. The current sensing circuit receives the DC power signal and senses a current level of the DC power signal. The PWM controller controls the AC signal output from the switch circuit according to the sensed voltage and current levels.

Abstract: A discharge lamp driving device, for driving a plurality of lamp modules (23), includes a plurality of power stage circuits (22), a plurality of driving circuits (24), a multi-phase controller (21), and a controller (25). The power stage circuits, respectively corresponding to the lamp modules, converts received direct current (DC) signals to alternating current (AC) signals to drive the corresponding lamp modules. The driving circuits, respectively connected to corresponding power stage circuits, output driving signals to control outputs of the corresponding power stage circuits. The multi-phase controller, connected to the driving circuits, controls timing of the driving circuits outputting the driving signals. The controller, connected to the driving circuits, controls duty cycles of the driving signals.

Abstract: A portable electronic product with a Qwerty keyboard has a single display for reducing the manufacturing cost and a Qwerty keyboard for inputting data more conveniently. The portable electronic product includes a housing, a Qwerty keyboard mounted in the housing and a display. The Qwerty keyboard is exposed to a bottom surface of the housing and has an outer surface that is lower than the bottom surface of the housing. The display is assembled on a top surface of the housing and has a side edge that is partially or fully mounted with one edge of the housing pivotally. Therefore, the display is able to swivel relative to the housing. When the user needs to input data, the display can be turned to a position that simultaneously faces to the user with the Qwerty keyboard.

Abstract: A power system for driving a plurality of lamps includes a transformer circuit, a current balancing circuit, and a light source. The transformer circuit includes a plurality of transformers in a quantity denoted by N, and each of the transformers has a first, a second, a third, and a fourth output ends. The current balancing circuit includes a plurality of current balancing units each having two output ends. The 2Nth current balancing unit is connected to a fourth output end of the Nth transformer, and the (2N?1 )th current balancing unit is connected to a first output end of the Nth transformer. The light source has a plurality of lamps each having one end connected to a respective output end of the current balancing units and another end grounded. The numbers of the current balancing units and the lamps are respectively twice and four times the quantity N of the transformers.

Abstract: A mist generating apparatus comprises a case, having a chamber, an inlet and an opening, an auxiliary vibrating element, mounted in said opening of said case and having a central hole and a periphery, a vibrating element, connected with said vibrating element at said periphery thereof and having an electrode and a connecting wire, and a spraying plate, having a plurality of spraying holes, set on said central hole of said auxiliary vibrating element, wherein said vibrating element generates vibrations which are transmitted to said auxiliary vibrating element, being enhanced by a projecting part thereof, then further transmitted to said spraying plate, so that liquid in said chamber is pressed through said spraying holes and mist is generated, while manufacturing cost is reduced, spraying effectivity is enhanced, noise is reduced, and lifetime is enhanced.

Abstract: A spraying device comprises a spraying plate, having a plurality of tiny holes, a vibrating element, set on a periphery of the spraying plate, and driving a vibrating movement thereof, a wrapping layer, made of soft material and tightly surrounding the vibrating element, sealing the vibrating element from the liquid, and a fastening cap, allowing for quick mounting and dismounting of the spraying device; wherein the vibrating movement of the spraying plate causes liquid adjacent to a lower side of the spraying plate to be periodically compressed and thereby to be pressed through the holes of the spraying plate, and wherein the wrapping layer prevents external interference with the vibrating movement, at the same time minimizing transmission losses of vibrational energy, enhancing effectivity of spraying.

Abstract: A device for driving a light source (L11) including a first lamp (a1) and a second lamp (a2) includes two power supply circuits, two transformers (12, 12?), and two current balancing components (13, 13?). Each power supply circuit includes a direct current (DC) power source (10 or 10?) and a DC to alternating current (AC) converter (11 or 11?). The DC/AC converters convert DC signals received from the corresponding DC power sources to AC signals. The transformers correspondingly convert the AC signals to other AC signals. The current balancing components are respectively connected between the transformers and the lamps. The feedback circuits correspondingly feed back current flowing through the lamps to the DC/AC converters.

Abstract: A portable electronic device includes a housing and a pressure sensor installed on the housing for sensing pressure applied to the portable electronic device. The portable electronic device further includes a logic unit for controlling operation of the portable electronic device according to a sensing result of the pressure sensor.

Abstract: A loudspeaker apparatus includes a speaker unit and a front cover. The speaker unit generates acoustic waves according to an external electronic signal. The front cover located in front of the speaker unit includes a plurality of elastic spacers and a diaphragm, and the elastic spacers and the diaphragm form an enhanced chamber, such, that the acoustic waves generated by the speaker unit go through the enhance chamber, and then drives the diaphragm to generate the acoustic waves again.

Abstract: A spraying device comprises a spraying plate, having a plurality of tiny holes, a vibrating element, set on a periphery of the spraying plate, and driving a vibrating movement thereof, a wrapping layer, made of soft material and tightly surrounding the vibrating element, sealing the vibrating element from the liquid, and a fastening cap, allowing for quick mounting and dismounting of the spraying device; wherein the vibrating movement of the spraying plate causes liquid adjacent to a lower side of the spraying plate to be periodically compressed and thereby to be pressed through the holes of the spraying plate, and wherein the wrapping layer prevents external interference with the vibrating movement, at the same time minimizing transmission losses of vibrational energy, enhancing effectivity of spraying.

Abstract: A method for making foamed products includes the steps of: (a) foaming a foamable blank at an elevated temperature; (b) forming a plurality of blind holes in the blank which has been foamed, by using a mold having a plurality of protrusions, the protrusions pressing the blank to form the blind holes and to create densified depths respectively in the blind holes; (c) cross-cutting the blank along a plane which extends across the blind holes so that the blank is divided into a first foam sheet having a plurality of through holes and a second foam sheet having a plurality of blind bores with the densified depths; and (d) heating the second foam sheet to expand and to form the densified depths into projections protruding from the second foam sheet.