Abstract: A two-step auto focus camera with two focal points includes a lens unit (20) and a permanent magnet (30) being fixedly mounted around the lens unit to move with the lens unit. Upper and lower coil seats (60a, 60b) are mounted around the lens unit and are arranged at upper and lower sides of the magnet, respectively. Upper and lower coils (50a, 50b) wind around the upper and lower coil seats, respectively. A circuit board (80) supplies a current to each of the coils, wherein the current to each coil has a plurality of square waves in one focusing time for the lens unit to move from one focal point to the other focal point.

Abstract: An auto focusing camera includes a lens unit (2) including a barrel (20) and a lens (22) received in the barrel, a permanent magnet (3) being fixedly mounted around the barrel of the lens unit and moving with the lens unit when the lens unit undergoes telescopic movement during operation, and a coil seat (6a, 6b) with a coil (5a, 5b) wound thereon arranged at a side of the permanent magnet. An interlocking device (642, 202) is formed on the barrel and the coil seat for guiding the telescopic movement of the lens unit.

Abstract: A motor structure with a built-in lens includes a motor (30), and a lens unit (50) received in the motor and driven by the motor to telescopically move along an axial thereof. An internal thread (344) is formed on an inner surface of the motor. The lens unit includes an upper portion (51) and a lower portion (54). An external thread (544) is formed on an outer surface of the lower portion of the lens unit to threadedly engage with the internal thread of the motor. A dust cover (70) is arranged on the upper portion of the lens unit and defines an opening (71) for the upper portion of the lens unit to move therethrough. The lower portion of the lens unit is limited in the cover so that the external thread is prevented from being exposed to the environment during movement of the lens unit.

Abstract: A transmitter IC provided with a SAW-based oscillator with an external SAW device. The transmitter IC comprises an oscillating circuit. The oscillating circuit comprises an inverter stage, a first capacitor, a second capacitor, and a resistor. The inverter stage has input and output terminals respectively coupled to two ends of the external SAW device. The first and second capacitors are respectively coupled between the input/output terminal and a ground. The resistor is coupled between the input and output terminals of the inverter stage.

Abstract: A receiver IC provided with a SAW-based oscillator with an external SAW device. The receiver IC comprises an oscillating circuit. The oscillating circuit comprises an inverter stage, a first capacitor, a second capacitor, and a resistor. The inverter stage has input and output terminals respectively coupled to two ends of the external SAW device. The first and second capacitors are respectively coupled between the input/output terminal and a ground. The resistor is coupled between the input and output terminals of the inverter stage.

Abstract: An auto-focusing lens of a camera includes a lens unit (11), a permanent magnet (12) being fixedly mounted around the lens unit to move with the lens unit, a first coil seat (15a) arranged on a first side of the magnet with a first winding (14a) wound thereon, and a second coil seat (15b) arranged on a second side opposite to the first side of the magnet with a second winding (14b) wound thereon. The first and second windings and the first and second coil seats are provided for establishing magnetic fields when electric currents are applied to the first and second windings. The magnetic fields interact with the magnetic field of the permanent magnet to drive the lens unit into movement between its front focus point (A) and its rear focus point (B).

Abstract: An exemplary camera module includes a lens mount, a lens unit, a magnet unit, a printed circuit board (PCB)-based Rogowski coil and a blade spring. The PCB-based Rogowski coil is fixed around the lens unit. The PCB-based Rogowski coil establishes an induced magnetic field when an electric current is applied thereto. The induced magnetic field interacts with the magnet unit to generate a magnetic force moving the lens unit telescopically. The blade spring includes a plurality of ribs. Each rib includes a moveable end connected with the lens unit and an opposite fixed end. The moveable end moves together with the lens unit with respect to the fixed end to cause the ribs to distort and generate an elastic force. The lens unit stops at a focal position when the magnetic force and the elastic force come to a balance.

Abstract: A two-step auto-focusing camera includes a lens unit (12); a permanent magnet (124) being fixedly mounted around the lens unit to move with the lens unit; first and second coil seats (14, 15) with first and second coils (145, 155) wound thereon being mounted around the lens unit at two opposite sides of the magnet. When electric currents are supplied to the first and second coils, one of the coil seats generates an attraction force to the lens unit, and the other coil seat generates a repulsion force to the lens unit. A flange (143, 153) extends outwardly from an outer periphery of each coil seat at an end near the magnet to limit the magnet to move between the flanges of the first and second coil seats during movement of the lens unit.

Abstract: A fluid dynamic bearing includes a bearing member (30) axially defining an inner bearing hole therein, and a spindle shaft (20) rotatably received in the bearing hole with a bearing clearance formed between an inner periphery of the bearing member and an outer periphery of the spindle shaft. Lubricant is filled in the bearing clearance. One of the inner periphery and the outer periphery comprises a bearing surface (10) with channels formed therein. The channels form a plurality of outer communication ends (1316b) at opposite sides of the bearing surface in the axial direction of the bearing member.

Abstract: A lens unit includes a moveable section and an elastic element. The moveable section includes a lens barrel, a lens received in the lens barrel and a magnet fixedly mounted around the lens barrel. The moveable section is configured to telescopically move along an optical axis direction of the lens. The elastic element includes an attachment portion connecting with the moveable section, a holding portion for holding the movable section, and a plurality of elastic ribs capable of being elastically deformed during the telescopic movement of the moveable section. The elastic ribs of the elastic element are configured to restrain a movement of the moveable section, whereby the moveable section can stop at a focal position when an elastic force generated by the deformation of the at least one elastic rib is equal to a force for causing the moveable section to have the telescopic movement.

Abstract: A camera module includes a lens unit, a magnet, a stator and an elastic element. The stator includes an upper coil seat with an upper coil wound therearound and a lower coil seat with a lower coil wound therearound. The upper and the lower coils establish an induced magnetic field when electric currents are applied thereto. The induced magnetic field interacts with the magnet to generate a magnetic force driving the lens unit into a telescopic movement. The elastic element includes a plurality of ribs. Each rib includes a fixed end connected with the stator and an opposite movable end. The moveable end moves together with the lens unit with respect to the fixed end to cause the ribs to deform and generate an elastic force. The lens unit stops at a focal position when the magnetic force and the elastic force come to a balance.

Abstract: A camera module includes a lens unit (30) and a stator (20). The lens unit includes a lens barrel (310), a lens (312) received in the lens barrel and a permanent magnet (32) fixedly mounted around the lens barrel. The stator is for receiving the lens unit therein. The stator includes a coil seat (21b) and a coil (22b) wound therearound. The coil seat includes a base (211b) and at least a connector (24) fixed on one side of the base. The at least a connector is electrically connected with the coil and includes a connecting pin (246) extending towards a bottom surface of the base. The connecting pin is made of an electrically conductive material and adapted for electrically connecting to a printed circuit board arranged under the base.

Abstract: A motor structure with a built-in lens includes a lens mount (10), a motor (30) received in the lens mount, and a lens unit (50) received in the lens mount and driven by the motor to telescopically move along an axial thereof. The motor includes a stator (32) and a rotor (34) being rotatably received in the stator. A narrow gap is defined between an inner surface of the stator and an outer surface of the rotor. A bearing layer (36) is filled in the gap of the motor to avoid swing of the rotor during rotation thereof. The lens unit threadedly engages with the rotor, whereby when the rotor rotates, the lens unit has a linearly telescopic movement relative to the lens mount.

Abstract: A camera module includes a lens unit, a magnet mounted around the lens unit, a stator receiving the lens unit and the magnet therein and an elastic element. The stator includes a coil seat and a coil wound therearound. The coil establishes a magnetic field when an electric current is applied thereto. The magnetic field interacts with a magnetic field of the magnet to generate a magnetic force driving the lens unit into telescopic movement. The elastic element includes at least one rib which has a fixed end connected with the stator and an opposite movable end. The moveable end moves together with the lens unit with respect to the fixed end to generate an elastic force during the telescopic movement of the lens unit. The lens unit stops at a focal position when the magnetic force and the elastic force come to a balance.

Abstract: An auto-focusing camera includes a lens mount (10), a lens unit (50) received in the lens mount, and a motor for driving the lens unit. The lens mount has a pair of connecting pins (22, 21) extending therethrough for electrically connecting to a printed circuit board arranged under the lens mount. The motor includes at least one coil seat (30, 40) with coil (35, 45) wound thereon, and a permanent magnet (55) being fixedly mounted around the lens unit to move with the lens unit. The at least one coil seat includes a pair of mounting pins (32, 43, 33, 41) for guiding two ends of the coils to be connected to the two connecting pins of the lens mount.

Abstract: A camera module includes a lens unit, a magnet mounted around the lens unit, a stator receiving the lens unit and the magnet therein and an elastic element. The stator includes a coil seat and a coil wound therearound. The coil establishes a magnetic field when an electric current is applied thereto. The magnetic field interacts with a magnetic field of the magnet to generate a magnetic force driving the lens unit into telescopic movement. The elastic element includes at least one rib which has a fixed end connected with the stator and an opposite movable end. The moveable end moves together with the lens unit with respect to the fixed end to generate an elastic force during the telescopic movement of the lens unit. The lens unit stops at a focal position when the magnetic force and the elastic force come to a balance.

Abstract: An auto focusing camera includes a square-shaped circuit board (11), a motor (100) arranged on the circuit board, and a lens unit (20) received in the motor. The circuit board forms contacts (114) on corners thereof. The motor includes a cuboid-shaped housing (18), a stator (12) mounted in the housing, and a rotor (14) being rotatably disposed in the stator. The stator includes a square-shaped base (123) forming connecting pins (139) in corners thereof, and a stator core (121) with coils (122) wound thereon. The coils have ends being electrically connected with the connecting pins of the base. The connecting pins are electrically connected with the contacts in the housing to electrically connect the ends of the coils to the circuit board.

Abstract: An auto focusing camera includes a stator (120) and a rotor (130) rotatably disposed in the stator. The stator includes a stator core (122) and at least a coil (125) wound around the stator core. The rotor has an inner thread (136). A lens unit (20) is linearly movably received in the rotor, comprising a lens barrel (14) and a lens (15) mounted in the lens barrel. The lens barrel has an outer thread (146) threadedly engaging with the inner thread of the rotor, and an internal thread (148) formed on an inner surface thereof. The lens has an external thread (158) threadedly engaging with the internal thread of the barrel. When the rotor rotates, the lens unit has a telescopic movement relative to the rotor. By rotating the lens, a relative position between the lens and the lens barrel is adjustable.

Abstract: A motor structure with built-in lens includes a lens mount (10) defining an inner space therein, a hollow stator (32) fixedly received in the inner space, a rotor (34) rotatably received in the stator with an internal thread (344) defined in an inner surface thereof, and a lens unit (50) received in the rotor. The lens unit defines an external thread (544) on an outer surface thereof threadedly engaging with the internal thread of the rotor. A protrusion (328) is formed on an inner surface of the stator for supporting an outer surface of the rotor thus obtaining stable rotation of the rotor.

Abstract: An auto-focusing camera includes a lens mount (10), a lens unit (31) and a motor. The lens unit includes a lens barrel (310) and a lens (312) received in the lens barrel. Tabs (34) and blocks (36) respectively extend outwardly from upper and lower end portions of the lens barrel. Each of the tabs forms an aslant guiding surface (342), which is declined outwardly along a top-to-bottom direction. The motor includes a magnet (32) which is forced to move over the guiding surfaces to be securely sandwiched between the tabs and the blocks. Upper and lower yokes (23a, 23b) are respectively arranged at the upper and lower sides of the magnet. Upper and lower coils (25a, 25b) respectively wind around the two yokes for establishing magnetic fields which interact with the magnetic field of the permanent magnet to drive the lens unit into movement.