An optical measuring device is provided. The optical measuring device includes a light source module, a light coupling module, a reference mirror module and a processing unit. The light provided by the light source module is transmitted by the light coupling module to the reference mirror module and an object, and the light would be reflected by the reference mirror module and the object and formed into a first light beam and a second light beam. The first and the second light beams then are transferred to the processing unit by the light coupling module. The processing unit could generate an adjusting signal according to the first and the second light beams. The adjusting signal is then transferred to the reference mirror module. The reference mirror module is adjusted according to the adjusting signal.一種光學量測裝置,包括光源模組、光耦合模組、參考鏡組以及處理單元。光源模組可提供一光線。光源模組的光線可經由光耦合模組傳遞至參考鏡組以及一待測物。光線會被參考鏡組、待測物反射後分別形成第一光線以及第二光線。第一光線、第二光線再透過光耦合模組傳遞至處理單元。處理單元將會依據第一光線與第二光線提供調整信號。處理單元將調整信號傳送給參考鏡組,參考鏡組依據調整信號調整參考鏡組。2‧‧‧光學量測裝置20‧‧‧光源模組22‧‧‧參考鏡組221‧‧‧致動器222‧‧‧反射鏡24‧‧‧光耦合模組26‧‧‧處理單元O1‧‧‧待測物
