High deflection efficiency is one of the urgent requirements for practical liquid crystal optical phased array (LC-OPA). In this paper. we demonstrate that high order grating lobes induced from fringe effect are the most important issue to reduce occupation of main lobe. A novel theoretical model is developed to analyze the feature of grating lobes when the device of LC-OPA is working... https://www.lightemupsequences.com/top-offer-SALE-Skylight-Quilt-PATTERN-P173-by-Fran-Gulick-Riley-Blake-INSTRUCTIONS-Only-Confident-Beginner-Precut-Friendly-Mult-super-offer/