(pos:名詞)<explanation>yue:#物理學 中，研究#光 嘅現象、性質、傳播及應用嘅分支eng:optics, physics<eg>yue:光學防震 (gwong1 hok6 fong4 zan3)eng:optical image stabilization (OIS)<eg>yue:光學變焦 (gwon1 hok6 bin3 ziu1)eng:optical zoom