提出了一种用于光无线接入的光学系统设计方案。该系统采用偏振分光镜可实现收发合一 ,从而简化了设计 ,减小了光学系统体积。同时还对该光学系统性能进行了分析。结果表明 ,所提出的无线接入光学系统体积小、通信效率高 ,完全能满足接入的要求 An optical system design for optical wireless access is proposed. The system uses polarization beam splitter can send and receive one to achieve unity, thus simplifying the design, reducing the optical system volume. The optical system performance is also analyzed. The results show that the proposed wireless access optical system is small in size and high in communication efficiency and fully meets the requirements of access