Abstract: An apparatus for manufacturing a secondary battery includes: an index table configured to receive a secondary battery cell, the secondary battery cell including an electrode assembly, a can accommodating the electrode assembly, and an electrode tab between the electrode assembly and the can to electrically connect the electrode assembly to the can; a laser scanner configured to irradiate laser onto an outer surface of the can to weld the electrode tab to the can; and a controller configured to variably control the laser scanner according to an operation of the index table.

Abstract: A photographic lens optical system includes first to fifth lenses sequentially arranged in a direction away from an object. The first lens may have a negative refractive power, the second lens may have a positive or negative refractive power, the third lens may have a positive refractive power, the fifth lens may have a negative refractive power, and the fifth lens may have a positive refractive power. The first and fifth lenses may be spherical lenses. The fifth lens may be a biconvex lens. The second to fourth lenses may be aspherical lenses. An aperture stop may be between the second and third lenses. The photographic lens optical system may satisfy the inequality ?2.3<f1G/f<?1.3, wherein f1G is the focal length of the first lens group including the first and second lenses, and f is the focal length of the photographic lens optical system.

Abstract: A photographic lens optical system includes first to fifth lenses sequentially arranged in a direction away from an object. The first lens may have a negative refractive power, the second lens may have a positive or negative refractive power, the third lens may have a positive refractive power, the fifth lens may have a negative refractive power, and the fifth lens may have a positive refractive power. The first and fifth lenses may be spherical lenses. The fifth lens may be a biconvex lens. The second to fourth lenses may be aspherical lenses. An aperture stop may be between the second and third lenses. The photographic lens optical system may satisfy the inequality ?2.3<f1G/f<?1.3, wherein f1G is the focal length of the first lens group including the first and second lenses, and f is the focal length of the photographic lens optical system.

Abstract: Disclosed herein is an image photographing device capable of being auto-focused while moving a lens barrel in an optical axis direction. The image photographing device includes: a lens barrel having at least one lens; a housing receiving the lens barrel therein so that the lens barrel moves in an optical axis direction; and an impact reducing unit elastically supporting the lens barrel in the case in which the lens barrel deviates from a set movement range, thereby primarily damping the lens barrel before the lens barrel deviates from the movement range to collide with other components positioned at an outer side of the lens barrel.

Abstract: Disclosed herein is an image photographing device capable of being auto-focused while moving a lens barrel in an optical axis direction. The image photographing device includes: a lens barrel having at least one lens; a housing receiving the lens barrel therein so that the lens barrel moves in an optical axis direction; and an impact reducing unit elastically supporting the lens barrel in the case in which the lens barrel deviates from a set movement range, thereby primarily damping the lens barrel before the lens barrel deviates from the movement range to collide with other components positioned at an outer side of the lens barrel.

Abstract: There is provided an apparatus for detecting the coordinates of an event within an interest region including: a light source limiting an interest region; at least two light receiving units receiving reflected light of an event within the interest region; a reflector refracting the reflected light received in the light receiving units; and one image sensor on which the reflected light refracted on the reflector is image-formed, wherein the apparatus for detecting coordinates is configured of one module.

Abstract: A video presenter includes a table, a supporting base disposed at one side of the table, a support arm formed in a generally arch shape and rotatably coupled to the supporting base, a camera head rotatably coupled at an upper end of the support arm, a lamp holder attached to an inwardly facing surface of the support arm, and a lamp unit rotatably coupled to the lamp holder and including a lamp cover having a curved inner surface with a varying radius of curvature. The lamp cover may have a plurality of prisms at its inner surface.

Abstract: A video presenter includes a table, a supporting base disposed at one side of the table, a support arm formed in a generally arch shape and rotatably coupled to the supporting base, a camera head rotatably coupled at an upper end of the support arm, a lamp holder attached to an inwardly facing surface of the support arm, and a lamp unit rotatably coupled to the lamp holder and including a lamp cover having a curved inner surface with a varying radius of curvature. The lamp cover may have a plurality of prisms at its inner surface.

Abstract: A compact zoom lens system includes, when viewed from an object side, a first lens group with positive refractive power and a second lens group. The magnification of the system can be changed by varying a distance between the first lens group and the second lens group, wherein the following condition is satisfied:Lt/ft<0.78wherein:Lt is the distance between the surface of lens closest to the object and the image plane; andft is the focal length of the zoom lens system.

Abstract: A zoom lens system having two lens group. The zoom lens system has a zooming ratio greater than 2.4, a viewing angle of over 70 degrees and a telephoto ratio of about 1.0. The zoom lens system includes a first lens group of a positive refractive power, which has four lenses, and a second lens group of a negative refractive power, which has three lenses. The second lens group includes one aspherical lens surface. The zoom lens system according to the present invention satisfies the following conditions:0.22<fl/ft<0.302.45<ft/fw0.74<Ll1/(ft-fw)<0.850.75<fl/Y<1.10wherefl is a focal length of a first lens group;ft is a focal length of the entire zoom lens system at a telephoto position;fw is a focal length of the entire zoom lens system at a wide angle position;Ll1 is a shift distance of the first lens group during zooming; and2Y is a diagonal length of an image.