Since early 1960s, the high precision machining technology, so called ultra-precision technology or nano technology, has been developed in many Held based on single point diamond turning technology. The major application of this technology is the optical components with aspherical surfaces. Now a days, customer requires the smaller and lighter optical elements, such as camera video and etc., with higher performance for convenience. So, the manufacturer focuses on the ultra-precision technology. Thus, this technology becomes the major target to challenge the advanced barrier for the next machining technology.