“Light controlled orientation technology plays a core role in the preparation of liquid crystal optical devices, and precise measurement of the relationship between anchoring intensity and exposure conditions is crucial for improving device performance. However, existing anchoring strength measurement methods have limitations, such as the inability to achieve single point front and rear multi state measurement of the same orientation film, which brings many inconveniences in practical applications. To this end, the paper proposes a novel azimuth anchoring energy measurement method based on the principle of phase detection. This method effectively eliminates initial placement errors through differential normalization fitting and omnidirectional transmission characteristic correction. It not only optimizes the measurement process, but also controls the measurement error within 8% and greatly improves the measurement timeliness. Theoretical and experimental results show that this method can quickly and effectively measure the variation of anchoring energy of light controlled orientation film with exposure parameters, providing real-time online monitoring means for the precision manufacturing process of liquid crystal optical components, which is of great significance for mastering the physical process of light controlled orientation and improving manufacturing quality.”