Abstract: A method for deduplication applicable to a file chunked into a plurality of deduplicated chunks is provided and includes: defining a calculation range in the file according to types of the chunks in the file, where the calculation range includes a plurality of consecutive chunks in the file; generating an evaluation value according to the types of the chunks in the calculation range to determine whether to mark the chunks in the calculation range; and re-chunking and deduplicating the marked chunks in the file. A computer-readable medium and a file system corresponding to the method for deduplication are also provided.

Abstract: A lens module includes a base, a rotating component, a positioning component and a lens barrel. The base includes at least one first positioning member and a hollow body which defines a receiving hole therein. An annular ledge is formed in the receiving hole. The rotating component includes an annular rotating barrel which is rotatably received in the receiving hole and contacts the ledge. An inner screw thread is formed on the inner wall of the rotating barrel. The positioning component defines a center hole therein and is positioned on the base and restricts the rotating barrel to contact the ledge. The lens barrel includes a main body passing through the center hole and at least one second positioning member engaging with the at least one first positioning member. An outer screw thread is formed on the main body and engages with the inner screw thread.

Abstract: An exemplary lens module (30) includes a lens barrel (31), a focusing mechanism (40), a resilient member (70), and a bottom seat (50). The lens barrel is mounted with at least one lens (36) therein and is fixed to one end of the focusing mechanism. One end of the resilient member resists the focusing mechanism and the other opposite end of the resilient member resists the bottom seat. The focusing mechanism is for controlling an amount of expansion permitted within the resilient member. The amount of expansion of the resilient member determines a degree of focus achieved by the lens module.

Abstract: An optical module includes a lens barrel (10). At least one lens (20) and a spacer (30) are mounted in the lens barrel. A filter (40) is glued to the lens barrel and the spacer with an adhesive so as to prevent the at least one lens and the spacer from falling out of the lens barrel.

Abstract: An exemplary lens module (20) includes a lens barrel (5), a focusing mechanism (7), a resilient member (9), and a bottom seat (6). The lens barrel is mounted with a lens (517) therein. The lens barrel is axially movable relative to the bottom seat due to a rotation of the focusing mechanism and the force generated by the resilient member. Such an axial movement, in turn, would change a position of the lens relative to the bottom seat.

Abstract: A lens module includes a first lens assembly, a first lens barrel, a second lens assembly, a second lens barrel having a bottom with a through hole, an elastic member and a holder receiving the first lens barrel and the elastic member therein. The first lens barrel has one of guiding protrusions and guiding grooves, and the holder has the other one of the guiding protrusions and the guiding grooves, the guiding protrusions being adapted for sliding in the guiding grooves. The first lens barrel has one of sloping portions and protrusions on an end facing toward the second lens barrel, and the second lens barrel has the other one of the sloping portions and the protrusions therein, the second lens barrel is threadedly movable relative to the holder, whereby the protrusions slide on the sloping portions such that the first lens barrel is forced to move.

Abstract: An exemplary lens module includes a stationary lens assembly and a moveable lens assembly. The stationary lens assembly includes at least one first lens and a first barrel receiving the at least one first lens therein. The movable lens assembly includes at least one second lens and a second barrel receiving the at least one second lens therein. The at least one second lens has a greater optical tolerance than that of the at least one first lens, the second barrel is in threaded engagement with the first barrel. A method for assembling the lens module, and a camera module using the lens module are also provided.

Abstract: A lens module includes a base, a rotating component, a positioning component and a lens barrel. The base includes at least one first positioning member and a hollow body which defines a receiving hole therein. An annular ledge is formed in the receiving hole. The rotating component includes an annular rotating barrel which is rotatably received in the receiving hole and contacts the ledge. An inner screw thread is formed on the inner wall of the rotating barrel. The positioning component defines a center hole therein and is positioned on the base and restricts the rotating barrel to contact the ledge. The lens barrel includes a main body passing through the center hole and at least one second positioning member engaging with the at least one first positioning member. An outer screw thread is formed on the main body and engages with the inner screw thread.

Abstract: A portable electronic device (100) with camera module includes a main body (10), a cover (30), and a connecting mechanism (20). The main body has a receiving cavity (16) defined therein. The cover has a camera module disposed thereon and facing the main body. The camera module is received in the receiving cavity of the main body. The connecting mechanism includes two connecting poles (22) each of which is arranged on its respective one of the two sides of the main body and the cover, each connecting pole is rotatably connected with the main body and the cover so that when the cover is driven upwards relative to the main body the camera module is removed from the receiving cavity as the cover slides relative to the main body.

Abstract: A lens module includes a first lens, a second lens having a flat end surface and a cylindrical peripheral side surface, and a lens barrel. The lens barrel includes a hollow cylindrical body having a first end and an opposite second end, and a cap at the first end of the hollow cylindrical body. The cylindrical body has an inner space with the first lens received therein. The cap has a through hole defined therein and an inner annular step support formed on an inner surface of the cap in the through hole. The inner support has a first flat surface and an opposite second surface. The second lens is received in the throught hole with the flat end surface contacting with the first flat surface of the inner support and the cylindrical peripheral side surface contacting with the inner surface of the cap.

Abstract: A lens barrel assembly (30) is described that includes a hollow lens barrel (3), at least one lens (4) and a filter (5). The lens barrel has a mounting portion (311). The at least one lens is received in the lens barrel, and the filter is transversely mounted in the lens barrel along a direction perpendicular to an axis of the lens barrel such that the filter interferingly engages in the mounting portion. In use of the lens barrel assembly, it is not necessary to adhere the filter to the lens barrel. Accordingly, the pollution problem of the filter and the lenses is eliminated, the manufacture of the lens barrel assembly is simplified, and the manufacturing cost is decreased.

Abstract: A lens module includes a first lens, a second lens having a flat end surface and a cylindrical peripheral side surface, and a lens barrel. The lens barrel includes a hollow cylindrical body having a first end and an opposite second end, and a cap at the first end of the hollow cylindrical body. The cylindrical body has an inner space with the first lens received therein. The cap has a through hole defined therein and an inner annular step support formed on an inner surface of the cap in the through hole. The inner support has a first flat surface and an opposite second surface. The second lens is received in the throught hole with the flat end surface contacting with the first flat surface of the inner support and the cylindrical peripheral side surface contacting with the inner surface of the cap.

Abstract: A lens module includes a first lens assembly, a first lens barrel, a second lens assembly, a second lens barrel having a bottom with a through hole, an elastic member and a holder receiving the first lens barrel and the elastic member therein. The first lens barrel has one of guiding protrusions and guiding grooves, and the holder has the other one of the guiding protrusions and the guiding grooves, the guiding protrusions being adapted for sliding in the guiding grooves. The first lens barrel has one of sloping portions and protrusions on an end facing toward the second lens barrel, and the second lens barrel has the other one of the sloping portions and the protrusions therein, the second lens barrel is threadedly movable relative to the holder, whereby the protrusions slide on the sloping portions such that the first lens barrel is forced to move.

Abstract: A portable electronic device (100) includes a device body (10) and a connector plug (30). The device body includes a digital camera (17). The connector plug has a mounting portion (31) and a plug portion (33). The mounting portion has one end rotatably connecting to the device body and electrically connecting to the digital camera, and an opposite end connecting with the plug portion. The plug portion is configured for electrically connecting with a computer thereby connecting the digital camera with a computer (200).

Abstract: An optical module includes a lens barrel (10). At least one lens (20) and a spacer (30) are mounted in the lens barrel. A filter (40) is glued to the lens barrel and the spacer with an adhesive so as to prevent the at least one lens and the spacer from falling out of the lens barrel.

Abstract: A mobile phone (100) includes a main body (20), a display (21) embedded in a user interface (24) of the main body, a containing space (23) spanning through to the user interface and at least one of a top surface (26) and a back (25) of the main body, and a camera assembly (30) set in the containing space. The photo-taking apparatus includes a lens module (31), a holophote (32) rotatably set opposite the lens module for reflecting or transmitting incident light rays into the lens module, and an orientation apparatus (33) including a gear (34) for adjusting the holophote. A user can conveniently change the position of the holophote by rotating the gear, so that an object or the user himself/herself can be photographed. In all cases, the user can conveniently see a preview of the photo on the display.

Abstract: An exemplary mold for forming a workpiece includes a first core holer, a first core member, a second core holer, a second core member, a mounting member, and an adjusting member. The first core member is mounted in the first core holer, the second core holer is configured for attachment to the first core holer, the second core member is mounted in the second core holer, the first core member and the second core member are configured for cooperatively defining a mold chamber. The mounting member is coupled to the first core holer, the adjusting member has a threaded portion in threaded engagement with the mounting member and a distal portion coupled to the first core member, the adjusting member is configured for adjustably moving the first core member relative to the second core member, thus adjusting a size of the mold chamber.

Abstract: A portable electronic device (10) includes a main body (20), and a pluggable module (30) rotatably attached to the main body. The main body includes a display screen (271) embedded in a front (27) thereof, and two symmetrical grooves (281) defined in opposite sides thereof. Two sockets (283) are defined in side walls of the main body that bound the grooves. Each socket includes an electrical connector electrically connecting with an inner circuit of the main body. The pluggable module includes a frame (31), a camera module (33), a headset module (32), and two tenons (3151, 3171) formed on an inside of the frame. The tenons engage in the sockets of the main body, thereby rotatably attaching the pluggable module to the main body, and electrically connecting the camera and headset modules with the inner circuit of the main body.

Abstract: An exemplary lens module includes a barrel, a metallic spacer, and a glass lens. The metallic spacer is disposed in the barrel. The metallic spacer has a through hole defined therein. The glass lens is received in the through hole of the metallic spacer.

Abstract: An optical module (100) includes a lens barrel (10), a lens (201), a filter (40), and a groove (105). The lens is engagingly received in the lens barrel. The filter is engagingly received in the lens barrel with an adhesive. The groove is defined in the lens barrel. The groove is adjacent to an outer periphery of the filter to receive the adhesive so as to prevent it from infiltrating into the lens.