The machining accuracy of optical grinding machines varies depending on the type of equipment and process, mainly categorized as follows:

1. High-precision optical grinding machine: capable of achieving machining accuracy within 0.001mm and surface roughness of RZ 0.2μm, suitable for optical components, precision molds, etc.

2. Ultra-precision nano-optical grinding machine: with an accuracy of up to 0.1 microns (0.0001mm), a spindle runout of 0.0125 microns, and a rotary table accuracy of 0.02 microns

3. Optical curve grinding machine (PG): It achieves an accuracy of ±0.002mm or even higher through an optical projection system, making it suitable for complex contour machining.

4. Optical glass precision grinding machine: surface roughness Ra, spindle power 45KW, supports high-speed and powerful cutting.

5. Nanometer-scale aspheric machine tool: grinding surface form accuracy PV value ≤0.15μm, surface roughness Ra<5nm.