Patent ID: 7636170

Claim:
A static/dynamic multi-function measuring device for a linear unit, comprising: a foundation having a track on one side; a multi-direction sliding unit disposed on the foundation and the track, the multi-direction sliding unit having an eddy current detector and providing two support that supports a moving mechanism and that detects under a non-contact state; a linear motor disposed on the foundation that drives the multi-direction sliding unit; a linear unit comprising a sensing element, wherein the sensing element is disposed on a slide block slidably moving on a slide rail; an optical measuring unit comprising a light source that outputs a light beam to the sensing element, a beamsplitter that splits the light beam reflected by the sensing element into a plurality of split light beams, and a quadrant photodiode corresponding to at least one split light beam that determines a light spot displacement of the split light beam on the quadrant photodiode to generate a sensing signal based on a relative motion.