Abstract: Disclosed is an inner lens provided in a lamp, the inner lens including a light transmission part through which at least a portion of a light beam output from a light source passes and is then output, a light distribution formation part that outputs, to an outside of the lamp, a light beam, which forms a light distribution pattern, within a transmission light beam that is the light beam output from the light transmission part, and an image formation part that outputs, to the outside, a light beam, which forms an image pattern, among the transmission light beam.

Abstract: Disclosed is a lamp that outputs a light beam to an outside in a first direction, the lamp including a light source part that outputs the light beam, and an inner lens including a reflective area that reflects the light beam output from the light source part and an output area that outputs the light beam reflected by the reflective area in the first direction and is disposed closer to the first direction than the reflective area.

Abstract: Disclosed is an inner lens provided in a lamp, the inner lens including a light transmission part through which at least a portion of a light beam output from a light source passes and is then output, a light distribution formation part that outputs, to an outside of the lamp, a light beam, which forms a light distribution pattern, within a transmission light beam that is the light beam output from the light transmission part, and an image formation part that outputs, to the outside, a light beam, which forms an image pattern, among the transmission light beam.

Abstract: Provided is an indeterminate copper material for electrolytic copper foil and a preparation method thereof. Specifically, the present disclosure relates to an indeterminate copper material for electrolytic copper foil, which exhibits excellent dissolution performance when dissolved in an electrolyte to manufacture electrolytic copper foil, contributes to securing work stability during the manufacture of electrolytic copper foil, and is simple to prepare, thereby reducing manufacturing costs, and a preparation method thereof.

Abstract: A flexible printed circuit board includes: a base film; a first circuit pattern disposed on an upper surface of the base film; a second circuit pattern disposed on a lower surface of the base film; and a boundary reinforcing pattern expanding the first circuit pattern in a width direction of the first circuit pattern based on a virtual boundary along which the first circuit pattern and the second circuit pattern meet each other in an overlay of the first circuit pattern and the second circuit pattern.

Abstract: A flexible printed circuit board includes: a base film; a first circuit pattern disposed on an upper surface of the base film; a second circuit pattern disposed on a lower surface of the base film; and a boundary reinforcing pattern expanding the first circuit pattern in a width direction of the first circuit pattern based on a virtual boundary along which the first circuit pattern and the second circuit pattern meet each other in an overlay of the first circuit pattern and the second circuit pattern.

Abstract: Disclosed are a system for identifying a user at a close range and an information providing system and method using the same, and more particularly to a close-range user identification system and an information providing system and method using the same, in which at least one user located at a close range visible to a client's naked eyes is searched and identified through a network or close-range communication directing, and opened information of the at least one identified user or a location-based advertisement is given to the at least one searched user.

Abstract: The present invention provides a PLA flooring material comprising: a marble chip surface layer comprising a PLA (poly lactic acid) resin; an adhesive layer and a plywood layer formed under the marble chip surface layer; and a surface treatment layer formed on the marble chip surface layer. In addition, the present invention provides a method for manufacturing a marble chip flooring material, comprising the steps of: preparing a marble chip surface layer comprising a PLA resin; forming an adhesive layer and a plywood layer under the marble chip surface layer; and forming a surface treatment layer on the marble chip surface layer.

Abstract: Disclosed therein is a flooring, which can secure environment-friendliness by forming a surface layer laminated on an upper face of a base layer using PLA (Poly Lactic Acid) resin instead of wood, easily provide a handcraft surface texture by applying a curved pattern onto the surface of the surface layer using embossing rollers at the time that the surface layer is manufactured, and prevent compression, scratches, discoloration, and so on in comparison with woods. The flooring constructed on a floor of a building includes: a base layer made from one of an MDF, an HDF, and a plywood; and a surface layer having a reinforced layer, a printed layer, and a transparent layer which are laminated on an upper face of the base layer in order, at least one of the layers being made of PLA (Poly Lactic Acid) resin. A curved pattern is formed on an upper face of the surface layer.

Abstract: The present invention provides flooring material which comprises a thermal conductive base material with a resin film including a carbon nano-tube; or a thermal conductive sheet. The flooring material of the present invention has high floor heating efficiency because thermal conduction is high and can save energy.