Aimed at the problem that laser triangle method easy to be influenced by inclined plane

and the dependence to laser and small measurement range of common holography

the method of non-contact measurement based on conoscopic holography is presented.The method adopts common-path measurement and has good environmental adaptation.On the basis of analysis of the principle of conoscopic holography

mechanical structure of system

electrical control and software parts are designed.The functions of image collecting and processing

temperature adaptive control and man-machine interactive are realized in the system.Experiment contrast to two-frequency laser shows the conoscopic holography system has high measurement precision and can satisfy measurement demand.