Abstract: Provided are an engineering plastic composite and a method for producing the same. The engineering plastic composite includes a carbon fiber having a surface modified by a hydrogen plasma and including a functional group and an engineering plastic. The carbon fiber is mixed with the engineering plastic to constitute a composite.

Abstract: Disclosed is a camera lens assembly having a lens part and a lens carrier for moving the lens part such that the same moves forward and backward in the direction of an optical axis. The disclosed camera lens assembly comprises: a base part; a lens carrier disposed to be slidable along a direction of an optical axis in the base part; and an automatic focal point adjustment driving part having one portion installed to the base part and the remaining portion installed to the lens carrier, to drive the lens carrier to move forward and backward along the direction of the optical axis by means of an electromagnetic force, wherein a part of the lens carrier and a part of the base part are convex-concave-coupled to each other, and a plurality of bearings are arranged on the convex-concave-coupled portion.

Abstract: Provided are a polytetrafluoroethylene (PTFE) coating and a preparing method of the same. The PTFE coating includes: a nanodiamond powder whose surface is treated with a plasma using a hydrogen-containing reactive gas to remove amorphous carbon, the nanodiamond powder being ground in a commercially available state and having a surface to which a functional group is attached; and a PTFE solution dispersing the nanodiamond powder.

Abstract: Provided are an engineering plastic composite and a method for producing the same. The engineering plastic composite includes a carbon fiber having a surface modified by a hydrogen plasma and including a functional group and an engineering plastic. The carbon fiber is mixed with the engineering plastic to constitute a composite.

Abstract: Provided are an engineering plastic composite and a method for producing the same. The engineering plastic composite includes a carbon fiber having a surface modified by a hydrogen plasma and including a functional group and an engineering plastic. The carbon fiber is mixed with the engineering plastic to constitute a composite.

Abstract: An autofocus adjustment apparatus is provided. The autofocus adjustment apparatus includes a base formed with a light-through hole, a carrier inserted into the base and configured to receive a lens barrel configured of one or more lenses, a magnet installed in one surface of the carrier, a coil installed in the base to face the magnet, and at least one or more balls located between the carrier and the base and configured to support the carrier to move along an optical axis direction of the lenses.

Abstract: A filter switching device used for a camera module and a mobile device that includes a camera module are disclosed. The disclosed filter switching device used for a camera module comprises: a base having a light passage hole formed therein; a filter blade unit that is coupled to the base to rotate about the reference axis of the base and includes a plurality of filters; and a driving unit that rotates the filter blade unit using a magnetic force, wherein one of the plurality of filters is set to the position corresponding to the light passage hole when the filter blade unit rotates by a preset angle in a first direction, and another filter is set to the position corresponding to the light passage hole when the filter blade unit rotates by a preset angle in a second direction that is opposite to the first direction.

Abstract: Provided are a polytetrafluoroethylene (PTFE) coating and a preparing method of the same. The PTFE coating includes: a nanodiamond powder whose surface is treated with a plasma using a hydrogen-containing reactive gas to remove amorphous carbon, the nanodiamond powder being ground in a commercially available state and having a surface to which a functional group is attached; and a PTFE solution dispersing the nanodiamond powder.

Abstract: Disclosed is a camera lens assembly having a lens part and a lens carrier for moving the lens part such that the same moves forward and backward in the direction of an optical axis. The disclosed camera lens assembly comprises: a base part; a lens carrier disposed to be slidable along a direction of an optical axis in the base part; and an automatic focal point adjustment driving part having one portion installed to the base part and the remaining portion installed to the lens carrier, to drive the lens carrier to move forward and backward along the direction of the optical axis by means of an electromagnetic force, wherein a part of the lens carrier and a part of the base part are convex-concave-coupled to each other, and a plurality of bearings are arranged on the convex-concave-coupled portion.

Abstract: Provided are an engineering plastic composite and a method for producing the same. The engineering plastic composite includes a carbon fiber having a surface modified by a hydrogen plasma and including a functional group and an engineering plastic. The carbon fiber is mixed with the engineering plastic to constitute a composite.

Abstract: An autofocus adjustment apparatus is provided. The autofocus adjustment apparatus includes a base formed with a light-through hole, a carrier inserted into the base and configured to receive a lens barrel configured of one or more lenses, a magnet installed in one surface of the carrier, a coil installed in the base to face the magnet, and at least one or more balls located between the carrier and the base and configured to support the carrier to move along an optical axis direction of the lenses.

Abstract: A filter switching device used for a camera module and a mobile device that includes a camera module are disclosed. The disclosed filter switching device used for a camera module comprises: a base having a light passage hole formed therein; a filter blade unit that is coupled to the base to rotate about the reference axis of the base and includes a plurality of filters; and a driving unit that rotates the filter blade unit using a magnetic force, wherein one of the plurality of filters is set to the position corresponding to the light passage hole when the filter blade unit rotates by a preset angle in a first direction, and another filter is set to the position corresponding to the light passage hole when the filter blade unit rotates by a preset angle in a second direction that is opposite to the first direction.

Abstract: Disclosed is a method for producing a carbide derived carbon layer with a dimple pattern. The method includes forming a dimple pattern on the surface of a carbide ceramic material and forming a carbide derived carbon layer thereon. Also disclosed is a carbide derived carbon layer with a dimple pattern produced by the method. The carbide derived carbon layer with dimple pattern has high wear resistance, good adhesion to a machine part, and excellent frictional characteristics. The carbide derived carbon layer can be applied to various fields, such as coating of carbide coated and carbide materials. Particularly, the carbide derived carbon layer is suitable for coating of machine parts (e.g., sliding parts, mechanical seals, piston rings, and compressor vanes) where excellent mechanical properties are needed.

Abstract: The present invention relates to a shutter device for camera used for small-sized digital equipment and includes a base forming a light transmission hole to expose a film or charge-coupled device (CCD) to laser beam; an electromagnet mounted on one side of the base; a driving arm which is mounted on one side of the electromagnet on the base so as to pivot on the base; a first shutter and a second shutter to open and close the light transmission hole, which pivots on the part of the base in association with the pivoting of the driving arm; and a magnetic which is installed on the driving arm and has the north magnetic pole and the south magnetic pole at opposite ends of the magnetic or on surfaces opposite to the electromagnet.

Abstract: An automatic focal point control apparatus is provided. The apparatus includes a base fixed in the camera, which includes a cylindrical projection extending from a top surface thereof and into which part of a lens barrel is inserted; a bobbin inserted into the cylindrical projection on the base that includes a plurality of electromagnets around which coils are wound; a rotation body that includes a support ring rotatably connected to the outer circumference of the adaptor and a ring-shaped permanent magnet fixed onto an outer surface of the support ring and that has a plurality of N poles and an equal number of S poles alternately arranged at regular intervals; and a housing detachably mounted on the base that includes a space unit formed inside that includes the bobbin, rotation body and adaptor, and a through hole formed inside so that light and image are projected onto the adaptor.

Abstract: The present invention relates to a shutter device for camera used for small-sized digital equipment and includes a base forming a light transmission hole to expose a film or charge-coupled device (CCD) to laser beam; an electromagnet mounted on one side of the base; a driving arm which is mounted on one side of the electromagnet on the base so as to pivot on the base; a first shutter and a second shutter to open and close the light transmission hole, which pivots on the part of the base in association with the pivoting of the driving arm; and a magnetic which is installed on the driving arm and has the north magnetic pole and the south magnetic pole at opposite ends of the magnetic or on surfaces opposite to the electromagnet.

Abstract: A shutter device mounted in a compact device such as a camera or mobile phone is provided. The shutter device includes, a base which forms a light permeation hole through which a film or a charge coupled device (CCD) is exposed to a light; a first and second electromagnets which are mounted to opposite sides of the base; a driving arm in which one end is rotatably assembled with a side of the base between the first electromagnet and the second electromagnet; a first and second shutters which open or close the light permeation hole while concurrently rotating about a part of the base in association with the rotation of the driving arm; and a magnetic which is mounted to an end of the driving arm, and rotates the driving arm in a clockwise or counter clockwise direction while moving by the magnetic force between the first electromagnet and the second electromagnet along a direction of an electric current applied to the first and second electromagnets.

Abstract: An automatic focal point control apparatus is provided to move an adaptor mounted in a camera linearly back and forth.

Abstract: A bubble-jet type ink-jet printhead is provided. When forming a doughnut-shaped bubble, the printhead allows bubbles to be first grown around the heater that surrounds the central axis of the nozzle at regular angles followed by the formation of another bubble between the earlier formed bubbles, thereby forming a larger doughnut-shaped bubble. Accordingly, this can prevent the formation of an unbalanced doughnut-shaped bubble due to variations in local resistance of the heater, which may be caused by a process error. Furthermore, the printhead allows the center of the doughnut-shaped bubble to be set on the central axis of the nozzle thus causing a droplet formed within the doughnut-shaped bubble to be ejected in a normal manner, that is, in a direction vertical to the nozzle plate.

Abstract: An ink cartridge for an ink jet printer includes an ink storing portion for containing ink and a head for ejecting droplets of the ink stored in the ink storing portion. The ink storing portion includes a chamber filed with ink in a liquid state, a negative pressure maintaining apparatus for maintaining the pressure of the inside of the chamber to be negative, and a uniform supply guide apparatus, installed between the chamber and the head, for guiding the ink in the chamber to be uniformly supplied to the head. Thus, since the ink is used by being stored in a liquid state, most of the amount of the stored ink can be used for printing, so that the efficiency in use can be improved much.