modem optical meaning in English

光学调制解调器

In recent several years , our lab ( state key lab of modem optical instrumentation , image engineering group ) have spent quite a few on this subject and have got some important results , but the most of the research works are focused on auto - focus theory , algorithms
本实验室在过去的几年中在这方面做了很多工作，并取得了不少成果，但主要集中在自动对焦的理论，算法方面的研究。