Abstract: A hole expanding device includes an electric heating device, a moving device, an rotating device, and a carrying device. The electric heating device includes a transition portion and a hole expanding rod fixed onto the transition portion. The electric heating device heats the hole expanding rod to a predetermined temperature. The rotating device is fixed onto the moving device. The moving device drives the rotating device to move along a direction parallel to the hole expanding rod. The carrying device is fixed onto the rotating device and includes a receiving groove for receiving and fixing a workpiece. The rotating device rotates the carrying device to make two opposite surfaces of the workpiece face the hole expanding rod.

Abstract: A device for testing a camera module with an actuator is provided. The testing device includes a light emitter, a testing lens member, a light receiver, and a processor. The light receiver emits test light to the camera module. The testing lens member serves as a lens unit of the camera module in a testing process. The testing lens member includes a first lens, and a second lens detachably connected to the first lens. The first lens and the second lens respectively insert into the camera module from two opposite sides of the camera module, and abut two opposite sides of the actuator. The light receiver receives test light emitted from the light emitter and passed through the camera module. The processor determines a quality of the camera module according to the test light received by the light receiver.

Abstract: An optical fiber coupling connector of compactness includes a main body, and first and second layers of optical fibers which are all parallel. The main body includes an upper surface, a lower surface, a front surface, and a back surface. The upper surface carries a row of light-emitting optical fibers and the lower surface carries a row of light-receiving optical fibers. The upper surface partially or entirely overlaps the lower surface perpendicularly. The light-emitting fibers are fixed in the upper surface with first glue body and any excess glue flows to and collects by a recess in the upper surface. The light-receiving fibers are fixed in the lower surface with second glue body and any excess glue flows to and collects in a recess in the lower surface.

Abstract: A camera module includes a guiding rod made of metal, a lens holder, a guiding sleeve made of metal, and a lens unit. The guiding sleeve is connected to the lens holder, and is sleeved on the guiding rod. The lens unit is received in the lens holder. The material of the guiding rod and the guiding sleeve permits a more controlled and precise movement of the guiding sleeve on the guiding rod in obtaining focus, friction force between the guiding rod and the guiding sleeve is decreased, and the degree of precision achieved will endure for a significantly longer time.

Abstract: A clamping device includes a first plate and a second plate. The first plate includes an upper surface, a lower surface facing away from the upper surface and a first side surface. The upper surface is substantially parallel with the lower surface. The first side surface perpendicularly connects the upper surface and the lower surface. The first plate defines a receiving cavity at a joint of the upper surface and the first side surface. The second plate is detachably connected to the first plate. The second plate includes a top surface and a second side surface. The second side surface perpendicularly connects to the top surface. The second plate defines a sloped surface extending from the top surface to the second side surface. The sloped surface aligns with the receiving cavity. The second plate includes a reflective layer positioned on the sloped surface.

Abstract: In a method for determining alignment between an optical fiber and a converging or diverging lens, light is directed into an optical fiber of an optical connector with a lens element. The lens element has a front surface forming a lens and a back surface defining a recess, the optical fiber is inserted into the recess and points at the lens, to form a light spot on the front surface. An image of the front surface of the lens is captured and a coordinate system is established. Coordinate values of the center of the lens and of the light spot in the coordinate system are measured. The respective coordinate values of the center of the lens and of the center of the light spot are compared for matching or otherwise to determine correct alignment or otherwise.

Abstract: An optical signal transmission device includes a first and a second photoelectric converting device, a first and a second connector, a plurality of first optical fibers, a plurality of second optical fibers, and an adapter module. The first and the second photoelectric converting devices are electrically connected with the first and the second electronic device. The first and the second connectors separately define a plurality of first and second fixed grooves. The adapter module includes a first and a second adapter portion. The first adapter portion defines a plurality of third fixed grooves. The second adapter portion defines a plurality of fourth fixed grooves. Several optical couplings are generated between the first connector and the first photoelectric converting device, between the second connector and the second photoelectric converting device, and between the first adapter portion and the second adapter portion.

Abstract: An assembling device includes: a base, a first pressing plate, a second pressing plate and an ejecting unit. The base defines an accommodating portion which includes a top surface, a bottom surface and a side surface. The top surface defines a plurality of receiving grooves for receiving the moveable frames, the side surface defines a plurality of first through holes, the bottom surface defines a plurality of second through holes, the first through holes and the second through holes are communicated with the receiving grooves. The first pressing plate is configured for assembling a shaft on a first surface of the moveable frame. The second pressing plate is arranged on the side surface and being configured for assembling a magnet on a second surface of the moveable frame. The ejecting unit includes a plurality of ejectors, and configured for ejecting the movable frames in the receiving grooves.

Abstract: An optical connector includes a substrate and a lens element. The lens element includes a first bottom surface contacting with the substrate, and the lens element defines a groove in the bottom surface.

Abstract: An optical coupling lens includes a body, first converging portions, second converging portions, third converging portions, and fourth converging portions. The body includes a first optical surface, a second optical surface perpendicular to the first optical surface, and a reflecting surface oblique relative to the first optical surface and the second optical surface. The first and second converging portions are formed on the first optical surface and face the reflecting surface. The third and fourth converging portions are formed on the second optical surface and face the reflecting surface. The third converging portions correspond to the first converging portions, and the fourth converging portions correspond to the second converging portions.

Abstract: An assembling device for a guide pole of a camera actuator includes: a pedestal, a frame, a plurality of guide pole receiving units and a cover. The pedestal includes a first surface and a second surface opposite to the first surface, the first surface defines a plurality of first receiving holes, each the first receiving hole arranged with a magnet, the second surface defines a plurality of first bump. The frame locates on the second surface and defines a plurality of through holes. Each guide pole receiving unit defines a second receiving hole configuring for receiving a guide pole, each guide pole receiving unit is received in each through hole and locating on the first bump. The cover locates on the frame and comprises a top surface and a bottom surface, the top surface defines a plurality of dispensing holes, the dispensing hole extends through the cover.

Abstract: An optical connector includes a printed circuit board, a photoelectric element positioned on and electrically connected to the printed circuit board, a lens element, and an optical fiber. The lens element defines a cutout having a sidewall and a blind hole in the sidewall. The lens element defines a receiving recess and forms a lens in a bottom surface of the recess. The lens is optically aligned to gather light which is directly reflected from a light-emitting optical fiber inserted in the blind hole. The lens element is positioned on the printed circuit board such that the photoelectric element is received in the recess and aligned with the lens.

Abstract: A photoelectric conversion device includes a circuit board, light-emitting modules arranged on the circuit board in a first straight line, light-receiving modules arranged on the circuit board in a second straight line, and an optical coupling module. The optical coupling module includes a first optical surface, a second optical surface perpendicular to the first optical surface, a reflecting surface obliquely relative to the first and second optical surfaces, first converging lenses arranged on the first optical surface in a third straight line, second converging lenses arranged on the first optical surface in a fourth straight line, third converging lenses arranged on the second optical surface in a fifth straight line, and fourth converging lenses arranged on the second optical surface in a sixth straight line. The first to six straight lines are substantially parallel to each other.

Abstract: The disclosure relates to a protection cap assembly for protecting an optical fiber connector assembly. The optical fiber connector assembly includes a first shell and a second shell. The first shell includes a number of first lenses and the second shell includes a number of second lenses. The protection cap assembly includes a first protection cap and a second protection cap. The first protection cap is configured to sleeve over the first shell to enclose the first lenses. The second protection cap is configured to sleeve over the second shell to enclose the second lenses.

Abstract: A mold for fabricating an optical fiber connector includes a first plate-shaped core with a first forming surface, a second plate-shaped core with a second forming surface, and a female mold. The female mold includes a first surface and a second surface. The female mold defines a first through hole and a second through hole. Both the first through hole and the second through hole run through the first surface and the second surface. The first through hole opens in the first surface as a first front assembly opening. The first plate-shaped core is inserted into the first through hole with the first forming surface, such that the first plate-shaped core extends a distance out of the first front assembly opening. The second plate-shaped core is inserted into the second through hole, with the second forming surface being coplanar with the first surface.

Abstract: A camera actuator includes a moveable carrier, a metal tube, an image sensor carrying plate, and a metallic guide pin. The moveable carrier includes a first bushing hole and a second bushing hole. The first bushing hole is aligned with the second bushing hole. The metal tube is a hollow cylinder and arranged in the first bushing hole and the second bushing hole. The image sensor carrying plate comprises a through hole; the metallic guide pin comprises a first end and a second end, the first end is fixed in the through hole, and the second end is inserted into the metal tube.

Abstract: An optical-electric converting module includes a printed circuit board (PCB) and an optical-electric coupling element. The PCB includes a supporting surface, laser diodes and photo diodes. The laser diodes and the photo diodes are positioned on the supporting surface. The optical-electric coupling element includes a lower surface. The lower surface defines a cavity. A bottom portion of the first cavity forms light-receiving coupling lenses and light-emitting coupling lenses. The optical-electric coupling element is positioned on the supporting surface, with each light-receiving coupling lens being aligned with a laser diode, and each light-emitting coupling lens being aligned with a photo diode. A distance between the light-receiving coupling lenses and the laser diodes is equal to a distance between the light-emitting coupling lenses and the photo diodes in a direction perpendicular to the support surface.

Abstract: An apparatus for measuring a thickness of a lens is disclosed. The apparatus includes a first support, a second support, a third support, a first positioning element, a second element and a measuring element. The lens is disposed on the third support. The first positioning element is fixed to the first support to press against a first face of the lens beforehand. The second positioning element is movably mounted to the second support. The second positioning element can move towards the lens to press against a second face of the lens. The measuring element calculates the thickness of the lens according to the moving distance of the second positioning element.

Abstract: A method for determining a tilt angle of a camera actuator module is disclosed. A test device is placed on a precision tilt angle fine-tuning seat. The precision tilt angle fine-tuning seat is adjusted to horizontally orient the test device. The camera actuator module is placed on the test device when the test device is horizontally oriented. A coated and thin glass sheet is placed on the camera actuator module. A pressing plate is placed on the camera actuator module and pressed downward to cause the camera actuator module to be steadily position in contact with the test device. A laser beam is emitted onto the glass sheet and the tilt angle of the camera actuator module is determined using a laser rangefinder.

Abstract: An optical-electric converting element includes a lower surface and a side surface. The lower surface defines a cavity. A bottom portion of the cavity forms at least one first light-gathering coupling lens and at least one first light-emitting coupling lens. A diameter of the at least one first light-receiving coupling lens is equal to d1, and a diameter of the at least one first light-emitting coupling lenses is equal to d2. The side surface perpendicularly connects to the lower surface. The side surface forms at least one second light-receiving coupling lens and at least one second light-emitting coupling lens. A diameter of the at least one second light-emitting coupling lens is equal to d3, a diameter of the at least one second light-receiving coupling lens is equal to d4; wherein d1>d3 and d4>d2.