공간 여파기, 광 벤치 및 사각대의 설계와 제작

A spatial filter, a granite optical bench, and a granite rectangular base which are the infrastructure of the optical laboratory, were designed and constructed. The spatial filter was composed of an objective lens(×10) and a pinhole(φ25㎛). Its performance was evaluated by the laser beam filtering. The granite bench has the 1/4-20 tap for fixing and its length is 1.5m. The rectangular base has the size of 10×10×5㎝ and the weight of 1.4Kg.