Abstract: A watchband can comfortably secure an electronic device to a wrist of a user. The watchband can include a base having a contact surface opposite an engagement surface, contact loops on the contact surface for contacting a user, and engagement loops on the engagement surface for engaging hooks. The hooks can be provided on the engagement surface, opposite some of the contact loops. The base can include base threads, and the contact loops and engagement loops can be formed by contact threads and engagement threads woven about some of the base threads between the contact surface and the engagement surface. Between adjacent engagement loops, the engagement thread can be more securely attached to the base than is the contact thread between adjacent contact loops.

Abstract: A watchband can comfortably secure an electronic device to a wrist of a user. The watchband can include a base having a contact surface opposite an engagement surface, contact loops on the contact surface for contacting a user, and engagement loops on the engagement surface for engaging hooks. The hooks can be provided on the engagement surface, opposite some of the contact loops. The base can include base threads, and the contact loops and engagement loops can be formed by contact threads and engagement threads woven about some of the base threads between the contact surface and the engagement surface. Between adjacent engagement loops, the engagement thread can be more securely attached to the base than is the contact thread between adjacent contact loops.

Abstract: A watchband can comfortably secure an electronic device to a wrist of a user. The watchband can include a base having a contact surface opposite an engagement surface, contact loops on the contact surface for contacting a user, and engagement loops on the engagement surface for engaging hooks. The hooks can be provided on the engagement surface, opposite some of the contact loops. The base can include base threads, and the contact loops and engagement loops can be formed by contact threads and engagement threads woven about some of the base threads between the contact surface and the engagement surface. Between adjacent engagement loops, the engagement thread can be more securely attached to the base than is the contact thread between adjacent contact loops.

Abstract: A watchband can comfortably secure an electronic device to a wrist of a user. The watchband can include a base having a contact surface opposite an engagement surface, contact loops on the contact surface for contacting a user, and engagement loops on the engagement surface for engaging hooks. The hooks can be provided on the engagement surface, opposite some of the contact loops. The base can include base threads, and the contact loops and engagement loops can be formed by contact threads and engagement threads woven about some of the base threads between the contact surface and the engagement surface. Between adjacent engagement loops, the engagement thread can be more securely attached to the base than is the contact thread between adjacent contact loops.

Abstract: A watchband can comfortably secure an electronic device to a wrist of a user. The watchband can include a base having a contact surface opposite an engagement surface, contact loops on the contact surface for contacting a user, and engagement loops on the engagement surface for engaging hooks. The hooks can be provided on the engagement surface, opposite some of the contact loops. The base can include base threads, and the contact loops and engagement loops can be formed by contact threads and engagement threads woven about some of the base threads between the contact surface and the engagement surface. Between adjacent engagement loops, the engagement thread can be more securely attached to the base than is the contact thread between adjacent contact loops.

Abstract: A watchband can comfortably secure an electronic device to a wrist of a user. The watchband can include a base having a contact surface opposite an engagement surface, contact loops on the contact surface for contacting a user, and engagement loops on the engagement surface for engaging hooks. The hooks can be provided on the engagement surface, opposite some of the contact loops. The base can include base threads, and the contact loops and engagement loops can be formed by contact threads and engagement threads woven about some of the base threads between the contact surface and the engagement surface. Between adjacent engagement loops, the engagement thread can be more securely attached to the base than is the contact thread between adjacent contact loops.

Abstract: An exemplary ejection mechanism includes a first plate and a second plate opposite to the first plate, an ejector plate, ejectors, an actuator with a driving shaft, and a drive mechanism. The ejector plate and the drive mechanism are located between the first plate and the second plate. The ejection mechanism further defines first through holes which pass through the first plate and the second plate. The ejector plate defines a second through hole which is coaxial with the first through holes. The ejector extends from the ejecting plate to the first plate and aligns with the ejector hole of the first plate. The drive mechanism links with the driving shaft and the ejector plate, and the actuator drives the ejector plate between the first plate and the second plate via a drive mechanism, which makes the ejector eject or retract.

Abstract: A device capable of picking up optical elements includes a first suction member, a second suction member, a vacuum pump unit and a liquid spraying unit. The first suction member defines a chamber. The second suction member is arranged around the first suction member to form an annular space. The vacuum pump unit pumps the air out of the chamber and the annular space to create a vacuum therein, which generates a suction force to suck the optical elements respectively. The liquid spraying unit communicates with the chamber and the annular space, and pours the liquids into the chamber and the annular space. When the liquid volatilizes in the chamber and the annular space to fill the vacuum, the optical elements disengage from the first suction member and the second suction member respectively.

Abstract: A composite coating apparatus includes a first device configured for forming a nanoscale metal particle layer on an electrically conductive workpiece and a second device configured for forming metallic film on the nanoscale metal particles. The first device includes a Q-switch laser source for providing impulse laser light beams, a first liquid-ejecting member configured for ejecting electrolyte liquid contained therein onto the workpiece, and a first hollow light guide conduit for guiding the impulse laser light beams through the first liquid-ejecting member onto the workpiece. As such, an electrochemical reaction occurs on the workpiece. The electrolyte liquid forms a metal film and is then vibrated into nanoscale particles by the impulse laser light beams.

Abstract: A micro-lens array fabrication apparatus includes a first roller, a second roller, a molding member, and a cooling member. The first roller and the second roller revolve cooperatively to position portions of a substrate on the molding member while maintaining a tension on the substrate. The molding member includes a shaft and two caps connected to opposites ends of the shaft. The shaft defines a through hole and rows of molding holes in a lateral surface thereof, and forms heaters in the though hole. The heaters heat up the substrate till molten, and the air is driven to blow the molten substrate into the molding holes and form a row of micro-lens structures on the currently positioned portion of the substrate.

Abstract: An exemplary spray apparatus includes a first nozzle assembly and a second nozzle assembly, which are parallel to each other. The first nozzle assembly includes a plurality of feed inlets and a feed outlet in communication with the feed inlets. The first nozzle assembly configured for spraying a liquid coating material on a substrate. The feed inlets are aligned along a first imaginary straight line. The second nozzle assembly includes a plurality of air inlets and an air outlet in communication with the air inlets. The second nozzle assembly is configured for spraying air with uniform air toward the liquid coating material applied on the substrate. The air inlets are aligned along a second imaginary straight line parallel with the first imaginary straight line.

Abstract: An optical fiber connector includes a housing, and two lenses. The housing defines two first blind holes each configured for receiving an optical fiber. The two lenses are formed on the housing and each of the lenses is aligned with a corresponding first blind hole. The two second blind holes are defined on the housing and each of the second blind holes run through the housing to the bottom of a corresponding first blind hole allowing air in the first blind hole vent out when the optical fiber is inserted into the first blind hole.

Abstract: A method of machining a roller utilizes a laser machining system is disclosed. The roller includes a main body and two spindles extending from opposite end surfaces of the main body. The laser machining system includes a laser device, an adjustment device, and a controller. The laser device scans the position of the roller and sends a scanned signal to the controller. The controller analyzes the scanned signal, and if the roller is positioned at the exact position, the controller will send a signal to the laser device, and then the laser device begins to machine the roller. If not, the controller will send a signal to the adjustment device, the adjustment device adjusts the roller to the exact position, then the controller sends a signal to the laser device, and the laser device begins to machine the roller.

Abstract: An exemplary heat-distribution sensor includes a base and a number of thermocouples. The base includes a spherical surface and defines a number of receiving holes in the spherical surface. Each thermocouple has a sensing end which is received in a corresponding receiving hole and is configured for sensing heat generated by sunlight rays impinging on the sensing end.

Abstract: A injection molding die includes a first molding unit, a second molding unit, at least one slide block, and a number of elastic elements disposed between the slide block and the first molding unit. The first molding unit includes a first molding surface and a sidewall surrounded the first molding surface. At least one gap is defined in an edge between the sidewall and the first molding surface. The gas hole is exposed at the gap for providing gas to the gap. The slide block is capable of moving toward or away from the sidewall, and includes a protrusion for engaging in the gap to cover the gas hole. The protrusion includes a protrusion surface coplanar with the first molding surface. The second molding unit includes a second mold surface defining a mold cavity cooperated with the first molding surface, the protrusion surface, and the at least one slide block.

Abstract: An injection molding machine includes a hydraulic driving system providing hydraulic power; a molding system configured for molding a workpiece; and an injection system configured for injecting a molten material to the molding system with the hydraulic power. The injection system includes a cylinder and a piston movably received in the cylinder. The cylinder is surrounded by one of an alternating current-charged coil of wire and a closed-loop coil of wire, and the piston is surrounded by the other, whereby the piston receives acceleration for movement in the cylinder.

Abstract: An exemplary water jet guided laser device includes a water-ejecting device and a hollow light guide pipe. The water-ejecting device has a water chamber, a light incident through hole and a water-ejecting through hole defined at opposite sides thereof. The light incident through hole and the water-ejecting through hole are in communication with the water chamber. The water-ejecting device is configured for ejecting water from the water chamber through the water-ejecting through hole. The light incident through hole is configured for introducing a laser beam in the water chamber. The hollow light guide pipe is mounted in the water chamber and aligned with the light incident through hole and the water-ejecting through hole. The light guide pipe is watertight and is configured for receiving and guiding the laser beam from the light incident through hole to the water-ejecting through hole.

Abstract: An exemplary torque testing system includes a first screwdriver, a second screwdriver, a height measuring device, and a processor. The first screwdriver turns the first structure into the second structure using a maximum torque until the depth of the first structure turned into the second structure equals a predetermined minimum depth or the first structure is unable to be turned by the maximum torque. The second screwdriver turns the first structure into the second structure using a minimum torque until the first structure is unable to be turned by the minimum torque. The height measuring device measures the height of the combined first structure and second structure. The processor determines that the engagement between the first structure and the second structure is satisfactory, if the height of the combined first structure and second structure is in a range from a minimum height to a maximum height thereof.

Abstract: An exemplary fiber optic connector includes four converging lenses and a main body. The main body includes a first surface and a opposite second surface. The first surface defines four receiving holes for receiving four optical fibers. The converging lenses are arranged on the second surface and align with the respective receiving holes. The second surface defines two receiving slots for fixedly receiving two fixing protrusions of a complementary fiber optic connector, as well as two buffer slot. The two buffer slots each are located between the converging lens and the receiving slot, and are configured for allowing two portions of the main body to be bendable, such that precise alignment of the converging lens and the receiving slot is maintained.

Abstract: A solar-powered illumination device includes a solar-thermal-electric power system transforming solar power into electric energy, an illumination module electrically connecting with the solar-thermal-electric power system, a heat dissipation device dissipating heat generated by the illumination module and a heat-collection box receiving at least a part of the heat dissipation device therein. The solar-thermal-electric power system drives the illumination module to illuminate. The heat dissipated by the at least a part of the heat dissipation device is collected by the heat-collection box and transferred into the solar-thermal-electric power system. The solar-thermal-electric power system transforms the heat dissipated by the at least a part of the heat dissipation device into electric energy.