Abstract: A holder having a light sensor for tracking location of sunlight is disclosed. The light sensor holder includes a holder 100 in which a first light sensor 401 is set, a first light guide section 141 including a light inputting hole 151 adjacent to a wall 300 at one side 111 of a body 110 in the holder 100 and formed in vertical direction, wherein a light is inputted through the light inputting hole 151, a second home 122 connected to the first light guide section 141 via a refraction section 172 and a second light guide section 142, wherein the light inputted through the light inputting hole 151 is refracted, and the refracted light is delivered to a sensing section 420 of a first light sensor 401 through a light outputting section 161, and a first home 121 adjacent to the second home 122, the first light sensor 401 being set in the first home 121.

Abstract: A holder having a light sensor for tracking location of sunlight is disclosed. The light sensor holder includes a holder 100 in which a first light sensor 401 is set, a first light guide section 141 including a light inputting hole 151 adjacent to a wall 300 at one side 111 of a body 110 in the holder 100 and formed in vertical direction, wherein a light is inputted through the light inputting hole 151, a second home 122 connected to the first light guide section 141 via a refraction section 172 and a second light guide section 142, wherein the light inputted through the light inputting hole 151 is refracted, and the refracted light is delivered to a sensing section 420 of a first light sensor 401 through a light outputting section 161, and a first home 121 adjacent to the second home 122, the first light sensor 401 being set in the first home 121.

Abstract: Disclosed herein is a method for treating the surface of a metal product, the method comprising the steps of: degreasing the surface of the metal product, and removing a material used to degrease the surface, followed by neutralization and washing; spraying either a mixture of ethanol (C2H5OH), acetone (CH3COCH3) and water or alcohol onto the surface of the washed metal product; and forming an oxide layer on the surface of the metal product by firing or heat-treating the metal product resulting from the step of spraying.

Abstract: A holder having light sensor for tracking location of sunlight is disclosed. The light sensor holder includes a holder 100 in which a first light sensor 401 is set, a first light guide section 141 including a light inputting hole 151 adjacent to a wall 300 at one side 111 of a body 110 in the holder 100 and formed in vertical direction, wherein a light is inputted through the light inputting hole 151, a second home 122 connected to the first light guide section 141 via a refraction section 172 and a second light guide section 142, wherein the light inputted through the light inputting hole 151 is refracted, and the refracted light is delivered to a sensing section 420 of a first light sensor 401 through a light outputting section 161, and a first home 121 adjacent to the second home 122, the first light sensor 401 being set in the first home 121.

Abstract: A holder having an optical sensor for tracking location of sunlight is disclosed. The optical sensor holder includes a holder 100 in which a first optical sensor 401 is set, a first light guide section 141 including a light inputting hole 151 adjacent to a wall 300 at one side 111 of a body 110 in the holder 100 and formed in vertical direction, wherein a light is inputted through the light inputting hole 151, a second home 122 connected to the first light guide section 141 via a refraction section 172 and a second light guide section 142, wherein the light inputted through the light inputting hole 151 is refracted, and the refracted light is delivered to a sensing section 420 of a first optical sensor 401 through a light outputting section 161, and a first home 121 adjacent to the second home 122, the first optical sensor 401 being set in the first home 121.

Abstract: The present invention relates to a thin forming apparatus, i.e. an apparatus for forming thin films of various materials on substrates, for example, in processes of fabricating semiconductor wafers or liquid crystal displays (LCDs). The thin film forming apparatus comprises a substrate support for mounting a substrate on which a thin film is to be formed, and a chamber that encloses the substrate support and has proper operation conditions. Then, adsorption means constructed by applying a ductile metal material such as indium, tin, lead or antimony on a metal or synthetic resin base material are attached to surfaces of components within the thin film forming apparatus except the substrate. Accordingly, it is possible to fundamentally prevent failure of formation of a thin film due to adhesion of a portion of an unnecessary thin film, which has been formed on and then peeled off from the surfaces of the components, to the substrate.