Abstract: A lens actuating motor is provided. The motor includes a lens unit and an actuator unit including a bobbin configured to fix the lens unit, a coil unit configured to wind an outer side surface of the bobbin, a magnet unit disposed to face the coil unit, a yoke unit configured to fix the magnet unit, and a printed circuit board configured to apply an electrical power source, wherein the bobbin includes a body configured to hold the lens unit, at least two straight line parts formed on an outer side surface of the body, a curved part formed between the straight line parts, and a damping member coated on a side of the magnet unit facing the bobbin.

Abstract: A linear vibrator are disclosed, wherein the linear vibrator includes a housing having a bracket and a case coupled to the bracket to form a receiving space, a spring coupled to an inner face of the case, a vibration unit having a magnet, the magnet being coupled to the spring, a coil, which has a hollow-can shape, disposed over the bracket for vibrating the vibration unit by using a magnetic field generated from the magnet and a magnet field generated from the coil, and a substrate electrically connected to the coil and the substrate interposed between the coil and the bracket, the substrate having an air venting portion being communicated with an inner space of the coil and outside of the coil.

Abstract: A vibration device is provided. The vibration device includes a case, a vibrator, a coil, and a spring. The vibrator is disposed inside the case and including a magnet, a yoke, and a weight. The coil is supported by the case. The spring allows the vibrator to be elastically supported by the case. The spring includes a first coupling portion coupled to the vibrator, a second coupling portion coupled to the case, and a connecting portion connecting the first coupling portion to the second coupling portion. The second coupling portion is disposed on a concentric circle with respect to a center of the first coupling portion. A region in which the second coupling portion is disposed on the concentric circle ranges from 40% or more to less than 100% of a total region of the concentric circle.

Abstract: A linear vibrator are disclosed, wherein the linear vibrator includes a housing having a bracket and a case coupled to the bracket to form a receiving space, a spring coupled to an inner face of the case, a vibration unit having a magnet, the magnet being coupled to the spring, a coil, which has a hollow-can shape, disposed over the bracket for vibrating the vibration unit by using a magnetic field generated from the magnet and a magnet field generated from the coil, and a substrate electrically connected to the coil and the substrate interposed between the coil and the bracket, the substrate having an air venting portion being communicated with an inner space of the coil and outside of the coil.

Abstract: A 3D laser range finder sensor is disclosed wherein the sensor comprises: a reflection body for reflecting an emitted light and an incident light; a horizontal rotation body for rotating the reflection body; a vertical moving body for tilting the reflection body; and a body irradiating the emitted light to the reflection body and receiving the incident light through reflection from the reflection body.

Abstract: Embodiments of a linear vibrator are provided that are capable of reducing the manufacturing cost, increasing the product reliability and increasing the vibrating quantity. An embodiment of a linear vibrator can include a case formed of an upper case portion and a lower case portion coupled to each other to provide a predetermined inner space; a substrate disposed on an upper surface of the lower case portion; a first coil and a second coil installed at both end parts inside of the case and connected to the substrate; a spring having one side fixed on at least one of the inside faces of the case; and a magnet fixed at another side of the spring and located between the first and second coils inside of the case, where the magnet can vertically vibrate through an interaction with the first and second coils.

Abstract: A vibration device is provided. The vibration device includes a case, a vibrator, a coil, and a spring. The vibrator is disposed inside the case and including a magnet, a yoke, and a weight. The coil is supported by the case. The spring allows the vibrator to be elastically supported by the case. The spring includes a first coupling portion coupled to the vibrator, a second coupling portion coupled to the case, and a connecting portion connecting the first coupling portion to the second coupling portion. The second coupling portion is disposed on a concentric circle with respect to a center of the first coupling portion. A region in which the second coupling portion is disposed on the concentric circle ranges from 40% or more to less than 100% of a total region of the concentric circle.

Abstract: A contact spring comprises: a support portion connected to electrical equipment; a contact portion electrically connected to an external power supply terminal; at least two bent portions connected between the support portion and the contact portion and having a bent shape.

Abstract: Embodiments of a linear vibrator are provided that are capable of reducing the manufacturing cost, increasing the product reliability and increasing the vibrating quantity. An embodiment of a linear vibrator can include a case formed of an upper case portion and a lower case portion coupled to each other to provide a predetermined inner space; a substrate disposed on an upper surface of the lower case portion; a first coil and a second coil installed at both end parts inside of the case and connected to the substrate; a spring having one side fixed on at least one of the inside faces of the case; and a magnet fixed at another side of the spring and located between the first and second coils inside of the case, where the magnet can vertically vibrate through an interaction with the first and second coils.

Abstract: A contact spring comprises: a support portion connected to electrical equipment; a contact portion electrically connected to an external power supply terminal; at least two bent portions connected between the support portion and the contact portion and having a bent shape.

Abstract: A contactless eddy current brake for cars is disclosed. In the brake, two cores are arranged around the edge of a brake disc while being spaced apart from each other at an angle of 90°. Each of the cores is wound with a coil, thus forming an electric magnet. A speed sensor is positioned around the axle, thus sensing revolutions of the wheel. A control unit calculates a DC or AC control current in response to a speed signal output from the sensor, thus outputting an appropriate control current value to the coils. A current amplifier supplies the control current value from the control unit or a current value from a brake pedal to the coils of the cores. The control unit allows a DC current to be supplied to the coils when the car runs at a high speed or allows an AC current with different phases to be supplied to the coils when the car runs at a low speed or is stopped on a slope.