Abstract: A glue dispensing apparatus includes a container, a glue dispensing head and a heating unit. The container receives glue, and the glue dispensing head is connected to the container. The heating unit is mounted on the container. The heating unit includes a temperature sensor, a heating component, and a controller electrically connected to the temperature sensor and the heating component. The controller compares the temperature of the glue with a predetermined temperature range, controls the heating component to heat the glue when the temperature of the glue is equal to or less than a lower limit of the predetermined temperature range, and controls the heating component to stop heating when the temperature of the glue is equal to or greater than an upper limit of the predetermined temperature range.

Abstract: A glue dispensing apparatus includes a container, a glue dispensing head and a heating unit. The container receives glue, and the glue dispensing head is connected to the container. The heating unit is mounted on the container. The heating unit includes a temperature sensor, a heating component, and a controller electrically connected to the temperature sensor and the heating component. The controller compares the temperature of the glue with a predetermined temperature range, controls the heating component to heat the glue when the temperature of the glue is equal to or less than a lower limit of the predetermined temperature range, and controls the heating component to stop heating when the temperature of the glue is equal to or greater than an upper limit of the predetermined temperature range.

Abstract: A lens assembly includes a first lens and a second lens. The first lens includes a first optically active part, a first optically inactive part surrounding the first optically active part, and a first annular protrusion formed on the first optically inactive part. The first annular protrusion defines an accommodating room. The second lens includes a second optically active part, a second optically inactive part surrounding the second optically active part, a second annular protrusion formed on the second optically inactive part, and a light blocking layer formed on a surface of the second annular protrusion facing the first lens. The second lens is coupled to the first lens in such a manner that the second annular protrusion is received in the accommodating room.

Abstract: An testing device for lens module includes an image sensor, a light source assembly, a testing tray, a detecting device, and a processor. The light source assembly is aligned with the image sensor. The testing tray is disposed between the light source assembly and the image sensor, and defines a plurality of through holes for receiving lens modules. The detecting device is configured for detecting whether the lens module to be tested is tilted. The processor controls the moving of the image sensor and the testing tray. The processor is capable of stopping the moving of the image sensor and the testing tray when the detecting device detected the lens module to be tested is tilted.

Abstract: A lens assembly includes a first lens and a second lens. The first lens includes a first optically active part, a first optically inactive part surrounding the first optically active part, and a first annular protrusion formed on the first optically inactive part. The first annular protrusion defines an accommodating room. The second lens includes a second optically active part, a second optically inactive part surrounding the second optically active part, a second annular protrusion formed on the second optically inactive part, and a light blocking layer formed on a surface of the second annular protrusion facing the first lens. The second lens is coupled to the first lens in such a manner that the second annular protrusion is received in the accommodating room.

Abstract: A heat pipe manufacturing method includes the steps of: providing a partially formed heat pipe with one open end; pouring a predetermined quantity of fluid working media into an intermediate pipe; solidifying the working media at a low temperature; inserting the solidified working media into the partially formed heat pipe; and vacuumizing and sealing the partially formed heat pipe.

Abstract: An exemplary apparatus (10) is for analyzing a heat-transferring nano-fluid (20) with a view to obtaining information on heat-transferring properties of the nano-fluid. Typically, the nano-fluid is used for heat pipes. The apparatus includes an evaporating device (100) and a detecting device (200). The evaporating device is configured for preparing a gaseous sample (20?) of the nano-fluid for analyzing. The evaporating device includes a container (110) configured for containing the nano-fluid, and a temperature controller (120). The container has a first opening (112) allowing vaporized nano-fluid to exit therethrough. The temperature controller is configured for heating the nano-fluid in the container up to a predetermined temperature, and maintaining the nano-fluid at the predetermined temperature. The detecting device is configured for generating a laser light and receiving an optical emission from the gaseous sample, thus enabling heat-transferring properties of the nano-fluid to be analyzed.

Abstract: An exemplary lens module includes a barrel, at least one lens, a filter and a ring-shaped fastening member. The barrel has an interior space defined therein, a retaining portion, and a threaded portion proximate to the retaining portion. The at least one lens is received in the interior space of the barrel. The filter is received in the retaining portion of the barrel. The ring-shaped fastening member has threads on an outer wall thereof and is threadedly engaged in the threaded portion so as to fasten the filter to the retaining portion of the barrel. A method for assembling the lens module is also provided.

Abstract: An apparatus for forming a film of solution of carbon nanotubes includes a retaining member, an array of spray nozzles, and a supply tube. The spray nozzles are mounted on the retaining member. The spray nozzles being in communication with the supply tube. The apparatus can deposit a film of solution of carbon nanotubes having high thickness uniformity.

Abstract: An testing device for lens module includes an image sensor, a light source assembly, a testing tray, a detecting device, and a processor. The light source assembly is aligned with the image sensor. The testing tray is disposed between the light source assembly and the image sensor, and defines a plurality of through holes for receiving lens modules. The detecting device is configured for detecting whether the lens module to be tested is tilted. The processor controls the moving of the image sensor and the testing tray. The processor is capable of stopping the moving of the image sensor and the testing tray when the detecting device detected the lens module to be tested is tilted.

Abstract: A nano-scale filter (10) includes a porous supporting component (14) and a carbon nanotube filtration membrane (12) sintered on a top surface of the porous supporting component. The porous supporting component has a number of micro-scale pores. The filtration membrane is configured as a network formed by aggregating a number of multi-junction carbon nanotubes. The multi-function carbon nanotubes are selected from the group consisting of two-dimensional junction carbon nanotubes (30, 40, 50, 60), three-dimensional junction carbon nanotubes (20) and an admixture thereof. A method for making the nano-scale filter is also provided.

Abstract: A spacer (20), configured to be disposed between two lenses (12, 13) of a lens module (10) in order to separate the two lenses by a predetermined distance, includes a through hole (22) penetrating therethrough for permitting light to pass therethrough, and an upper surface (201) configured for receiving adhesive thereon. The upper surface has a slot (23) defined therein around the through hole. The slot is configured for receiving excess adhesive. A lens module using the spacer and a method of assembling the lens module are also provided.

Abstract: A fluid filling system for a vacuum container includes a fluid supply system configured for filling fluid into a container to be filled, a vacuum exhaust system configured for vacuumizing the container to a predetermined vacuum pressure, and a refrigeration device configured for freezing the fluid filled in the container. A fluid filling method for a vacuum container is also provided.

Abstract: An exemplary lens module includes a number of optical components, a barrel receiving the optical components therein, an image sensor and a holder engaged with the barrel. The holder receives the image sensor therein. The holder has an electromagnetic shielding coating formed thereon. The electromagnetic shielding coating is comprised of a polymeric matrix and a number of carbon nanotubes dispersed in the polymeric matrix and is configured for blocking electromagnetic interference from outside the holder. The lens module can block electromagnetic interference.

Abstract: A glue dispenser (40), for dispensing adhesive in assembling a lens module, includes a dispensing portion (41). The dispensing portion has a top side (411), a bottom side (412) positioned opposite to the top side, and a sidewall (413) connected to the top side and the bottom side. The dispensing portion further includes a main flow passage (415) for transporting adhesive therethrough and a plurality of feed flow passages (416). The main flow passage runs perpendicular from the top side toward the bottom side of the dispensing portion. The feed flow passages communicate with the main flow passage and radially extend to a joint of the side wall and the bottom side. At such a joint, the respective feed flow passages terminate and form a plurality of output ports (417) along an outer circumference of the bottom side.

Abstract: An exemplary grinding machine includes a grinding unit and a receiving unit. The grinding unit includes a rotor, a first spindle, and a first driver unit connected in series. The first spindle has a first end coupled to the rotor. The first driver unit is coupled to an opposite second end of the first spindle and configured for driving the rotor to rotate relative to a first axis. The receiving unit includes a container configured for receiving the rotor therein. The container has an inner spherical grinding surface defining a central second axis. The first axis is parallel to and spaced from the second axis.

Abstract: A device for testing heat conduction performance of a heat pipe is provided. In which the heat pipe to be tested includes an evaporating section and a condensing section. The device includes a block, a cooling device, a thermal interface material, a heating element for heating the block and a plurality of thermal probes. The block is coupled with the evaporating section of the heat pipe. The cooling device is coupled with the condensing section of the heat pipe. The thermal interface material is configured to be at a coupling interface between the block and the evaporating section of the heat pipe. The thermal probes are inserted into the block and the cooling device to measure the respective temperatures of distinct regions in the block and the cooling device where the thermal probes are located.

Abstract: An exemplary lens module includes a number of optical components, a barrel receiving the optical components therein, an image sensor and a holder engaged with the barrel. The holder receives the image sensor therein. The holder has an electromagnetic shielding coating formed thereon. The electromagnetic shielding coating is comprised of a polymeric matrix and a number of carbon nanotubes dispersed in the polymeric matrix and is configured for blocking electromagnetic interference from outside the holder. The lens module can block electromagnetic interference.

Abstract: A device for measuring adhesion strength between a first optical element and a second optical element includes a force gauge, a first magnet, and a second magnet. The second magnet is fixed to the force gauge. The first magnet and the second magnet are configured for magnetically attaching to opposite sides of the first optical element. An attractive force between the first magnet and the second magnet is greater than the adhesion strength between the first optical element and the second optical element.

Abstract: An exemplary lens module includes a barrel, at least one lens, a filter and a ring-shaped fastening member. The barrel has an interior space defined therein, a retaining portion, and a threaded portion proximate to the retaining portion. The at least one lens is received in the interior space of the barrel. The filter is received in the retaining portion of the barrel. The ring-shaped fastening member has threads on an outer wall thereof and is threadedly engaged in the threaded portion so as to fasten the filter to the retaining portion of the barrel. A method for assembling the lens module is also provided.