Abstract: There are provided an anode for a lithium metal polymer secondary battery comprising an anodic current collector having a surface on which a plurality of recesses having a predetermined shape are formed and a method of preparing the same. The plurality of recesses are formed on a surface of the anodic current collector using a physical method or a chemical method. In a lithium metal polymer secondary battery employing the anode, oxidation/reduction of lithium and the formation of dendrite occur only in the recesses formed by surface patterning of the anodic current collector. Thus, expanding and shrinking of a battery due to a change in the thickness of the lithium anode can be prevented and cycling stability and the lifespan of a battery can be improved.

Abstract: Disclosed is a structure for combining assistance sunglasses to glasses for eyesight correction. The assistance sunglasses structure includes: a rotating device having a tube body and a supporting rod rotatably inserted into the tube body; assistance sunglasses having a connection rod protruding from the rotating device, a combining part formed at an end of the connection rod, two permanent magnets mounted on the combining part, a support fragment protruding from the upper end of the permanent magnets, and a connection pin protruding from the support fragment; and glasses having permanent magnets mounted on a rim bridge thereof, and a pin hole formed at the same position as the connection pin, wherein the connection pin is inserted into the pin hole, and at the same time, the permanent magnets are adhered to each other by their magnetic force.

Abstract: A detachable sunglass unit for detachably attaching sunglasses to eyeglasses, includes two sunglass lenses, two sunglass frames for holding the sunglass lenses, a pivoting device provided between the sunglass frames, a sunglass connecting member extending from the pivoting device, and an eyeglass connecting member provided on the center of the eyeglasses and engaging with the sunglass connecting member. The connecting members use permanent magnets to keep the engaged state. The pivoting device includes an elastic connecting rod, and a pipe member that surrounds the connecting rod. The connecting rod includes end portions that are fixed to sunglass frames, and a bent portion between the end portions. The bent portion is inserted into the pipe member, and the internal diameter of the pipe member is smaller than the width of the bent portion, so that the bent portion is elastically deformed in the pipe member.