Abstract: An electromagnetic-wave-transmissive module of a vehicle radar is provided to minimize a dielectric impact reflection effect, which occurs when an electromagnetic wave radiated from an antenna is transmitted through a radome and a transmissive cover The electromagnetic-wave-transmissive module includes one or more of a radome covering the antenna and a transmissive cover, which is disposed to be spaced apart from a front side of the antenna and through which a radio wave radiated from the antenna and then transmitted through the radome is subsequently transmitted. At least one coating layer, which includes PTFE and which has a dielectric permittivity higher than the dielectric permittivity of air and lower than the dielectric permittivity of the radome and the transmissive cover, is formed on the surface of at least one of the radome and the transmissive cover.

Abstract: The present disclosure relates to a composition for a radar transmissive cover for a vehicle, which may enhance dielectric properties while excellently maintaining mechanical properties. The composition, as the composition forming the radar transmissive cover for the vehicle through which a radar beam radiated from a radar is transmitted, has a main material in which 70 to 90 wt % of Polybutylene Terephthalate (PBT) and 10 to 30 wt % of Polycarbonate (PC) are mixed and an additive containing at least reinforcing filler mixed.

Abstract: An electromagnetic-wave-transmissive module of a vehicle radar is provided to minimize a dielectric impact reflection effect, which occurs when an electromagnetic wave radiated from an antenna is transmitted through a radome and a transmissive cover The electromagnetic-wave-transmissive module includes one or more of a radome covering the antenna and a transmissive cover, which is disposed to be spaced apart from a front side of the antenna and through which a radio wave radiated from the antenna and then transmitted through the radome is subsequently transmitted. At least one coating layer, which includes PTFE and which has a dielectric permittivity higher than the dielectric permittivity of air and lower than the dielectric permittivity of the radome and the transmissive cover, is formed on the surface of at least one of the radome and the transmissive cover.

Abstract: The present disclosure relates to a composition for a radar transmissive cover for a vehicle, which may enhance dielectric properties while excellently maintaining mechanical properties. The composition, as the composition forming the radar transmissive cover for the vehicle through which a radar beam radiated from a radar is transmitted, has a main material in which 70 to 90 wt % of Polybutylene Terephthalate (PBT) and 10 to 30 wt % of Polycarbonate (PC) are mixed and an additive containing at least reinforcing filler mixed.

Abstract: A half mirror device includes a panel, and at least one light source disposed on a back side of the panel to emit light. The panel includes a light-transmitting base layer, a mirror layer formed on a front surface of the base layer to reflect light, the mirror layer having a plurality of light-transmitting holes at regular intervals through opposite surfaces of the mirror layer in a thickness direction, and a light-transmitting protective layer formed on a front surface of the mirror layer to protect the mirror layer, wherein the light source transmits light through the light-transmitting holes of the mirror layer.

Abstract: An ultraviolet curable primer for a radio-wave transmission cover of a vehicle may include about 20 wt % to about 30 wt % of urethane acrylate oligomer, about 35 wt % to about 60 wt % of monomer, about 1 wt % to about 5 wt % of photopolymerization initiator, about 0.1 wt % to about 1.0 wt % of wetting additive, and about 10 wt % to about 30 wt % of solvent, wherein the urethane acrylate oligomer comprises about 7.5 wt % to about 12.5 wt % of two-function urethane acrylate oligomer based on the total weight of the ultraviolet curable primer, and about 12.5 wt % to about 17.5 wt % of six-function urethane acrylate oligomer based on the total weight of the ultraviolet curable primer, and wherein the ultraviolet curable primer is applied to a radio-wave transmission cover comprising a multilayered oxide optical film.

Abstract: Disclosed is a coating layer penetrable by radio wave and having a metallic luster. The coating layer includes a resin layer as an outmost layer to an exterior or front, a metallic texture layer formed on a rear side of the resin layer and comprising a optical film layer including metal oxides having different refractive indexes, and a germanium (Ge) layer to reflect light and a reflection layer formed on the rear side of the metallic texture layer.

Abstract: An ultraviolet curable primer for a radio-wave transmission cover of a vehicle may include about 20 wt % to about 30 wt % of urethane acrylate oligomer, about 35 wt % to about 60 wt % of monomer, about 1 wt % to about 5 wt % of photopolymerization initiator, about 0.1 wt % to about 1.0 wt % of wetting additive, and about 10 wt % to about 30 wt % of solvent, wherein the urethane acrylate oligomer comprises about 7.5 wt % to about 12.5 wt % of two-function urethane acrylate oligomer based on the total weight of the ultraviolet curable primer, and about 12.5 wt % to about 17.5 wt % of six-function urethane acrylate oligomer based on the total weight of the ultraviolet curable primer, and wherein the ultraviolet curable primer is applied to a radio-wave transmission cover comprising a multilayered oxide optical film.

Abstract: A smart cruise control cover, suitable for attachment to a radiator grill of a vehicle, may include a transparent first resin layer having a contour with a predetermined shape on the rear surface thereof, an opaque second resin layer formed on the rear surface of the first resin layer and having, on the front surface thereof, a contour with a shape corresponding to the shape of the contour formed on the rear surface of the first resin layer, and a three-dimensional viewing layer formed between the first resin layer and the second resin layer and having different visible light reflectances at portions thereof to improve the visibility of the contour formed on each of the rear surface of the first resin layer and the front surface of the second resin layer.

Abstract: Disclosed is a coating layer penetrable by radio wave and having a metallic luster. The coating layer includes a resin layer as an outmost layer to an exterior or front, a metallic texture layer formed on a rear side of the resin layer and comprising a optical film layer including metal oxides having different refractive indexes, and a germanium (Ge) layer to reflect light and a reflection layer formed on the rear side of the metallic texture layer.

Abstract: A cover for a smart-cruise-control radar, which is mounted to a radiator grill of a vehicle may include a transparent first layer, a rear surface of which is divided into a curved portion formed at a position corresponding to a metallic portion of the radiator grill, a flat portion formed at a position corresponding to a void in the radiator grill, and a stepped portion formed between the curved portion and the flat portion, thus having a bent shape, an opaque second layer, a front surface of which has a shape corresponding to the rear surface of the first layer; a metallic-textured layer formed between the first layer and the second layer, and a painted layer formed on the flat portion between the first layer and the metallic-textured layer.

Abstract: Disclosed is a coating layer penetrable by radio wave and having a metallic luster. The coating layer includes a resin layer as an outmost layer to an exterior or front, a metallic texture layer formed on a rear side of the resin layer and comprising a optical film layer including metal oxides having different refractive indexes, and a germanium (Ge) layer to reflect light and a reflection layer formed on the rear side of the metallic texture layer.

Abstract: Disclosed is a piston ring for engine that includes chromium (Cr) coating layer coated on the surface of a base material of the piston ring of an engine; a chromium nitride (CrN) coating layer; and a silicon-incorporated diamond-like carbon (Si-DLC) coating layer, which is formed on the CrN coating layer, and contains Si component of about 3˜10 at %, and a method for manufacturing thereof.

Abstract: Disclosed herein are a metal texture coating for transmitting an electric wave and a manufacturing method thereof The metal texture coating for transmitting an electric wave includes: a transparent resin film; a metal texture layer deposited on any one of both surfaces of the resin film; and a chromium oxide layer deposited on the metal texture layer so as to transmit the electric wave therethrough and protect the metal texture layer.

Abstract: Disclosed is a radio wave penetration-type multilayer optical coating. The coating includes: a transparent first resin layer; an optical coating with a multilayer structure formed by alternately forming TiO2 and SiO2 on the first resin layer; and an opaque second resin layer formed on the optical coating.

Abstract: Disclosed are a coating layer of a zirconium composite material which can be applied to a friction portion and the like of a power train part of a vehicle, and a method of forming the coating layer. In particular, the coating layer of a zirconium composite material includes a ZrCuAlMo layer that is an intermediate layer for close contact force and a ZrCuAlMoN layer that is a functional layer for a low friction coefficient and durability and the ZrCuAlMo layer and ZrCuAlMoN layer are sequentially laminated on a surface of a base material to reduce friction of the friction portion. Accordingly, wear resistance, durability life, and the like may be improved, close contact force with the base material may be improved, and impact resistance and the like may be enhanced.

Abstract: Disclosed are a transceiving surface-treated metallic member disposed within a transmission path of a radar, and a method of manufacturing the transceiving surface-treated metallic member. The surface-treated metallic member in the invention provides a more secure transception property within the transmission path of the radar, particularly when it is applied as a smart cruise control (SCC) cover, has an aesthetic appearance, and is manufactured at reduced cost.

Abstract: Disclosed is a piston ring for engine that includes chromium (Cr) coating layer coated on the surface of a base material of the piston ring of an engine; a chromium nitride (CrN) coating layer; and a silicon-incorporated diamond-like carbon (Si-DLC) coating layer, which is formed on the CrN coating layer, and contains Si component of about 3˜10 at %, and a method for manufacturing thereof.