Abstract: A mobile device includes a main body, a display secured to the main body, and at least one refractor integrated with the display. The main body includes a storage device, a controller, and a switch unit coupled to the controller. A video content is stored in the storage device, and a switch unit is used to open or close the controller. The at least one refractor is used to define at least one projection region. When the controller is opened by the switch unit, the video content is divided into a plurality of video segments to be played on the display and the at least one projection region, and when the controller is closed by the switch unit, the video content is displayed on the display.

Abstract: A camera lens cleaning system includes a camera, a cleaning device, a processing unit, and an executing unit configured to move the color testing disk and the cleaning device. The camera is used to capture a plurality of different color images of a color testing disk located below the camera. The processing unit is used to process every adjacent two different color images to obtain a difference color value; thereby the processing unit compares the different color value with a reference color value to determine whether dirt is located on a camera lens of the camera. When the dirt is located on the camera lens, the executing unit is configured to move the cleaning device to clean the camera lens. The disclosure further offers a camera lens cleaning method.

Abstract: An electronic device includes a housing, a support member coupled to the housing, a trigger member coupled to the support member, a sliding member, a first magnet member coupled to the sliding member, and a second magnet member coupled to the support member. The first magnet member includes two first magnets and a second magnet coupled to the corresponding first magnet. The magnetic pole of the first magnets is opposite to the magnetic pole of the second magnet. The second magnet member includes a third magnet and two fourth magnets. The magnetic pole of the third magnet is same as the magnetic pole of the second magnet. The magnetic pole of the fourth magnets is same as the magnetic pole of the first magnets.

Abstract: A light emitting diode includes a substrate, graphene layer, a first semiconductor layer, an active layer, a second semiconductor layer, a first electrode, a second electrode, and a reflection layer. The first semiconductor layer, the active layer, and the second semiconductor layer are stacked on the substrate in sequence. The first electrode is electrically connected with the second semiconductor layer and the second electrode electrically is connected with the second part of the carbon nanotube layer. The graphene layer is located between the active layer and the second semiconductor layer. The reflection layer covers the second semiconductor layer.

Abstract: A coating device includes an autoclave and a spray member. The autoclave includes an autoclave body and a cover sealing the autoclave body. The autoclave body defines a plurality of holding grooves in an inner surface thereof for holding substrates. The spray member is positioned on the cover and received in the autoclave body. The spray member defines openings in a side surface thereof. The spray member includes a container and an ultrasonic atomization unit. The container defines a cavity in communication with the openings. The ultrasonic atomization unit is received in the cavity.

Abstract: A fan assembly includes a guide rail, a number of fan brackets slidably mounted to the guide rail, an air blocking member slidably mounted to the guide rail to fill a space between two fan brackets, and a number of fans correspondingly fixed to the fan brackets. To relocate the fans, the fan brackets and the air blocking members are slid out of the guide rail and are remounted to the guide rail in a different order.

Abstract: A display device includes a dial, an alarm setting member, and a warning unit. The alarm setting member includes an A/D converter, a recognition module, a storage module, and an analysis module. With rotation of the dial, a variation voltage is generated. The A/D converter converts variable voltage from analog to digital form. In contrast, the alarm time is decreased. The storage module stores the adjusted alarm time. The analysis module compares the current time with the preset alarm time and outputs a driving signal to the warning unit in the event of a match.

Abstract: A curved surface importing device and method imports character strings of graphic parameters and graphic attributes of graphs from an initial graphic exchange specification (IGES) document, and analyzes the character strings of each of the graphs to generate a graphic model. The curved surface importing device converts the graphic model to a plurality of free-form curves and a free-form curved surface, connects each of the free-form curves to generate a closed boundary curve, and cuts out a contour surface from the free-form curved surface according to the closed boundary curve. The curved surface importing device further meshes the contour surface using a plurality of triangles, and determines an approximate poly-line of a boundary of the contour surface. The plurality of triangles and the approximate poly-line of a boundary of the contour surface are displayed on a display screen.

Abstract: A projector includes a casing, an optical engine, and a heat dissipating module. The casing includes a first sidewall, a front wall defining a hole, a second sidewall, and a rear wall connected in sequence. The optical engine includes a lens module substantially aligned with the hole defined by the front wall, a DMD, and an illuminator module. The illuminator module is arranged at a side of the lens module away from the second sidewall, and includes a housing having a side surface away from the lens module and at least one light source installed on the side surface. The heat dissipating module includes a first heat sink attached to the at least one light source, a blower, and an exhaust fan. The blower is for blowing air towards the first heat sink from an air inlet.

Abstract: A printed circuit board (PCB) adapted for mounting different kinds of light sensing modules thereon includes a lighting sensing area and a plurality of pads. The pads are disposed around the lighting sensing area, for configuring one light sensing module thereon. In the present invention, the PCB is suitable for different kinds of light sensing modules without redesign, which lowers the manufacturing cost of the PCB.

Abstract: An exemplary cutting apparatus for cutting a workpiece includes a base, a cutting device and a first driving device. The cutting device is movably mounted on the base. The cutting device includes a first blade and a first vibrator. The first blade is movable in a moving direction toward the workpiece. The first vibrator is configured for vibrating the first blade to increase a shearing force applied to the workpiece. The first driving device is configured for driving the first blade to move.

Abstract: A rolling-circle machine for rolling a workpiece includes at least one first rolling portion, a second rolling portion connected to the first rolling portion, and at least one adjusting screw. The first rolling portion includes one or more first concaved sections for rolling the workpiece and at least a through hole. The second rolling portion includes one or more second concaved sections for rolling the workpiece. The second concaved section forms one or more rolling slots in cooperation with the first concaved section. The adjusting screw includes a threaded post passing through the through hole of the first rolling portion and one end of the threaded post is fixed in the second rolling portion. The adjusting screw is configured for adjusting a distance between the first and the second rolling portion to roll workpieces that have different dimensions.

Abstract: A system for controlling photoflash includes a signal processing unit, a calculating unit, a photoflash module and an adjusting unit. The photoflash module includes a capacitor. The signal processing unit is configured for analyzing image information to get a current brightness value of the image, and the calculating unit is configured for calculating a first photoflash time of the photoflash module based on a first voltage value of the capacitor via analyzing the current brightness value. The adjusting unit is configured for adjusting the first photoflash time to get a second photoflash time according to a second voltage value of the capacitor, and outputting the second photoflash time to the photoflash module to control flashing of the photoflash module.

Abstract: A portable electronic device for measuring a distance D1 between two points E1, E2, includes a visible and rotatable light emitter, an angle computing unit, a distance computing unit and an output unit. The light emitter generates a rotatable light beam capable of rotating from pointing in an initial direction to project to the point E1. The initial direction is substantially perpendicular to a line defined by the points E1, E2. A distance H1 between the light emitter and the line, and a distance S1 from the point E2 to the point of intersection of the line defined by the first and second points E1, E2 with the initial direction, are known. The angle computing unit computes an angle defined by the visible light beam projecting to the point E1 and the initial direction according to the rotatable light beam. The distance computing unit computes the distance D1 based on the angle, the distance H1 and the distance S1.

Abstract: A power connector assembly includes a male power connector and a female power connector engaged in the male power connector. The male power connector includes a main body defining a receiving cavity and a number of terminals positioned in the receiving cavity. The female power connector includes a main body, an inserting portion, and a latching member with elasticity. The latching member includes a latching portion and an actuating portion. The latching portion includes a guiding tab connected to the inserting portion and an engaging tab extending from the guiding tab. The actuating portion extends from the engaging tab. A latching slot is defined in a wall of the main body of the male power connector to engage with the engaging tab to engage the female power connector in the male power connector.

Abstract: A battery fixing apparatus for fixing a battery in a housing of an electronic device is provided. The fixing apparatus includes a bracket and a fixing member accommodated in the housing. The bracket includes two protruding portions, and each protruding portion defines a slot. The protruding protrusions move out or in from an opening of the housing. The fixing member is used for receiving the battery. The fixing member further includes two locking parts protruded from inner surface of the fixing member. The locking parts pass through the slot and are locked into limiting grooves of the battery, and then, deform elastically and separated from the limiting grooves while pressed by the protruding portions.

Abstract: An apparatus for assembling lenses includes a lens tray, a support and a tray-securing member. The lens tray defines a plurality of lens-receiving holes configured for receiving lenses and a plurality of positioning holes defined therein. The support is configured for supporting the lens tray and defines a plurality of positioning pins thereon configured for extending through the corresponding positioning holes of the lens tray. The tray-securing member includes a pressing portion defining a through hole therein and a plurality of sleeves configured for receiving the positioning pins therein. The pressing portion is configured for downwardly pressing the lens tray to prevent the lens tray from shaking.

Abstract: A mobile terminal device includes a detector, a transceiver, an analyzer, an execution module, and a connection module. The detector generates a probing request signal. The transceiver receives signals sent from a plurality of access points (AP). The analyzer retrieves a plurality of Received signal strength Indications (RSSI) of the plurality of APs and workload of the plurality of APs by analyzing the signals. The execution module generates a plurality of indices of the plurality of APs based on an analysis results, and selects one of the plurality of indices as a best comprehensive index. The connection module establishes a connection between an AP corresponding to the best comprehensive index and the mobile terminal device.