Optical system capable of improving spatial resolution of hyperspectral imaging and optical alignment method using the same

An optical alignment method using an optical system for improving the spatial resolution of hyperspectral imaging, the optical alignment method comprising:

• (a) placing a first cylindrical lens curved to focus and form an image on an axis corresponding to a shorter side of a digital micromirror device (DMD) having a rectangular shape;
• (b) placing a second cylindrical lens curved in the same axial direction as the axis to collimate light reflected from the DMD;
• and
• (c) obtaining hyperspectral data by scanning line patterns of the DMD.