Instrument Technology Research Center (ITRC) has devoted to limited and diversified ultra-precision components fabrication for more than 30 years, and established various aspheric optics fabrication units, precision centering machines, and micro lens and diffractive optical element (DOE) machining devices in the past years. To match up the massive growth of the optical industrial in Taiwan, ITRC introduced a new 5-axis ultra-precision machine in 2005. This machine has both single point diamond turning (SPDT) and ultra-precision grinding capability, and could fabricate both rotational symmetric and 3D freeform components; This article is focused on the ultra-precision machine technology, and SPDT and ultra-precision grinding technologies.
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