Abstract: An actuator for optical image stabilization, includes a fixed frame having an internal space; a moving frame, accommodated in the internal space, configured to linearly and rotatably move on a plane perpendicular to an optical axis; a first ball member disposed between the fixed frame and the moving frame; a first driver, disposed on the moving frame and the fixed frame, configured to provide a driving force to the moving frame; a plurality of magnetic bodies disposed on the fixed frame to generate attractive force with respect to the first driver disposed on the moving frame; a sensor substrate having a portion coupled to the moving frame to be movable, together with the moving frame, and another portion coupled to the fixed frame; and an image sensor disposed on the portion of the sensor substrate.

Abstract: An aperture module is provided. The aperture module includes a plurality of blades configured to interlock with each other to form a through-hole, a rotator on which the plurality of blades are disposed, a first base on which the rotator is disposed, a second base connected to the first base, and a driving unit disposed on the second base and configured to provide a driving force to move the rotator in a direction that intersects an optical axis direction. The first base is configured to move in an optical axis direction with respect to the second base.

Abstract: A camera module includes a carrier supported on a housing and movable in an optical axis direction, at least one frame supported on the carrier and movable, relative to the carrier, in at least one direction perpendicular to the optical axis direction, and a lens module supported on the frame. The frame is supported on the carrier such that attractive force acts in the at least one direction perpendicular to the optical axis direction.

Abstract: Stainless steel for a fuel cell separator plate and a manufacturing method therefor are disclosed. The stainless steel for a fuel cell separator plate, according to one embodiment of the present invention, comprises: a stainless base material; and a passive film formed on the stainless base material, wherein a Cr/Fe atomic weight ratio in a 1 nm or less thickness region of the stainless base material, which is adjacent to an interface between the stainless and the passive film, is 0.45 or more. Therefore, by modifying the surface of the stainless steel for a fuel cell separator plate, a low interface contact resistance and a good corrosion resistance can be obtained, and a separate additional process such as precious metal coating can be removed, such that manufacturing costs are reduced and productivity can be improved.

Abstract: An actuator for optical image stabilization, includes a fixed frame having an internal space; a moving frame, accommodated in the internal space, configured to linearly and rotatably move on a plane perpendicular to an optical axis; a first ball member disposed between the fixed frame and the moving frame; a first driver, disposed on the moving frame and the fixed frame, configured to provide a driving force to the moving frame; a plurality of magnetic bodies disposed on the fixed frame to generate attractive force with respect to the first driver disposed on the moving frame; a sensor substrate having a portion coupled to the moving frame to be movable, together with the moving frame, and another portion coupled to the fixed frame; and an image sensor disposed on the portion of the sensor substrate.

Abstract: A camera module is provided. The camera module includes a housing; a first frame, provided in the housing; and a second frame, provided on the first frame and including a lens module, wherein the lens module is configured to rotate together with the second frame about a first axis and a second axis, intersecting an optical axis, and , wherein the first frame and the second frame are configured to be supported on a surface that is parallel to the optical axis.

Abstract: A camera module includes a carrier supported on a housing and movable in an optical axis direction, a frame supported on the carrier and movable, relative to the carrier, in a first direction perpendicular to the optical axis direction, and a lens module supported on the frame and movable, relative to the frame, in a second direction perpendicular to the optical axis direction. One of the frame and the lens module is supported such that attractive force acts in one of the first direction and the second direction.

Abstract: A camera module includes: a housing; a carrier disposed to oppose the housing in a first direction and to move in a second direction perpendicular to the first direction; and a ball member disposed between opposing surfaces of the carrier and the housing. The housing is in contact with the ball member at a first point, and the carrier is in contact with the ball member at a second point, A distance in the first direction from a center of the ball member to the first point is greater than a distance in the first direction from a center of the ball member to the second point.

Abstract: A camera module includes a carrier supported on a housing and movable in an optical axis direction, at least one frame supported on the carrier and movable, relative to the carrier, in at least one direction perpendicular to the optical axis direction, and a lens module supported on the frame. The frame is supported on the carrier such that attractive force acts in the at least one direction perpendicular to the optical axis direction.

Abstract: Disclosed is a stainless steel for a fuel cell separator having excellent surface hydrophilicity and electrical conductivity. According to an embodiment of a stainless steel for a fuel cell separator having excellent surface hydrophilicity and electrical conductivity, the surface oxide element ratio (1) value below may be 0.2 or more and the contact angle may be 80° or less as measured for the surface of a stainless steel containing 15 wt % or more of Cr by X-ray angle-resolved photoemission spectroscopy using an Al-K? X-ray source under the condition where a take-off angle of photoelectrons is from 120 to 85°.

Abstract: Disclosed is an austenitic stainless steel for a fuel cell separator with improved contact resistance. The austenitic stainless steel for a fuel cell separator with improved contact resistance according to an embodiment of the present disclosure includes, in percent by weight (wt %), at most of C (excluding 0), at most 3.0% of Si (excluding 0), at most 3.0% of Mn (excluding 0), 20 to 30% of Cr, 8 to 20% of Ni, at most 0.003% of S, at most 0.03% of P, at most 0.6% of Mo (excluding 0), at most 0.8% of Cu (excluding 0), 0.1 to 0.3% of N, at most 2.0% of W (excluding and the remainder being Fe and other inevitable impurities.

Abstract: A camera module is provided. The camera module includes a housing; a focus adjustment unit disposed in the housing; and a shake correction unit disposed in the housing, wherein the housing includes a first shake correction driving magnet and second shake correction driving magnet that provide a driving force to move the shake correction unit in a first direction intersecting an optical axis and a second direction intersecting the optical axis and the first direction, and a focus adjustment driving coil providing a driving force to move the focus adjustment unit in the optical axis direction. The housing further includes first to third yokes respectively disposed on a surface of the first magnet, a surface of the second magnet, and a surface of the focus adjustment driving coil.

Abstract: A camera module includes: a housing; a carrier disposed inside the housing and movable in an optical axis direction; and a lens module disposed inside the carrier and movable in directions perpendicular to the optical axis direction, and configured to implement optical image stabilization. The lens module includes a frame disposed on the carrier, and a lens holder disposed on the frame and having a lens barrel. The frame is configured to be supported by a first ball member interposed between the frame and the carrier on a side surface of the carrier parallel to the optical axis direction.

Abstract: A camera module includes a housing having an internal space; a carrier disposed in the internal space of the housing; a lens module disposed in the carrier; a first driver including a first magnet coupled to the carrier, and a first coil facing the first magnet; and a first ball unit and a second ball unit disposed between the carrier and the housing and spaced apart from each other in a direction perpendicular to an optical axis of the camera module, wherein the first ball unit includes two or more balls disposed in an optical axis direction, and the second ball unit includes a smaller number of balls than the first ball unit disposed in the optical axis direction, and a distance between the first ball unit and the second ball unit is greater than a length of a longest side of the carrier.

Abstract: Disclosed is a stainless steel for a fuel cell separator, more specifically, a stainless steel for a fuel cell separator having a low contact resistance. According to an embodiment of the stainless steel for a fuel cell separator disclosed herein, an arithmetic mean summit curvature Ssc of the surface defined according to the ISO 25178 standard is at least 6.0 ?m?1, a root mean square surface slope Sdq is at least 23, and a contact resistance is at most 10 m?·cm2.

Abstract: A camera module includes a housing having an inner space; a carrier, disposed in the inner space, configured to move relative to the housing in an optical axis direction; a lens module accommodated in the carrier; a guide housing coupled with the housing; a lifting guide rotatable with respect to the guide housing; a lifting member configured to move in the optical axis direction as the lifting guide is rotated to be in contact with or spaced apart from the lens module; and a driving unit configured to transmit a driving force to the lifting guide. A protrusion part is disposed on one of the lifting guide and the driving unit, and a guide groove coupled to the protrusion part is disposed in another of the lifting guide and the driving unit.

Abstract: A camera module includes a lens module, a first frame accommodating the lens module, a second frame accommodating the first frame, and a housing accommodating the second frame. The lens module and the first frame are rotatable about a first axis, with respect to the second frame, perpendicular to an optical axis. The lens module, the first frame, and the second frame are rotatable about a second axis, with respect to the housing, perpendicular to both the optical axis and the first axis. A first ball member is disposed between the first frame and the second frame and elastically supported in a direction of the first axis, and a second ball member is disposed between the second frame and the housing and elastically supported in a direction of the second axis.

Abstract: A camera module includes a lens holder accommodating a lens module therein, a housing accommodating the lens module and the lens holder therein, a shake correction unit including first and second magnets, disposed in the lens holder, and first and second coils disposed to face the first and second magnets, a focusing unit including a third magnet, disposed in the lens module, and a third coil disposed on a first substrate disposed on the lens holder, and a plurality of ball members configured to support movement of the lens module in a direction perpendicular to an optical axis. The lens module, the lens holder, the third magnet, and the third coil are moved together in the direction perpendicular to the optical axis, by driving force of the shake correction unit.

Abstract: A reflecting module includes: a housing; a rotation holder supported by the housing, and including an inclined seating portion; and a reflective member disposed on the inclined seating portion. The rotation holder is rotatable with respect to a first axis perpendicular to an optical axis of the housing, and with respect to a second axis perpendicular to the optical axis and the first axis. The first and second axes cross an inside of a rectangular parallelepiped having a surface coinciding with a surface of the reflective member, and the reflective member interfaces with the seating portion along a diagonal plane within the parallelepiped.

Abstract: Disclosed is a stainless steel having excellent surface electrical conductivity for a fuel cell separator. According to an embodiment of the disclosed stainless steel having excellent surface electrical conductivity for a fuel cell separator, a value of the following surface oxide atomic ratio (1) may be 0.08 or more, as measured on the surface of a stainless steel containing 15 wt % or more of Cr by X-ray angle-resolved photoemission spectroscopy using an Al-K? X-ray source under the condition where a take-off angle of photoelectrons is from 12° to 85°. sum ? of ? atomic ? concentrations ? ( at ? % ) ? of ? Cr ? in ? Cr ? hydroxide sum ? of ? atomic ? concentrations ? ( at ? % ) ? of ? metal ? elements in ? total ? oxides ? and ? hydroxides ( 1 ) The Cr hydroxide represents CrOOH, Cr(OH)2, or Cr(OH)3.