引擎模块（S）

将干涉仪、延迟线、平衡探测器和VOA等器件集成在一起，内置驱动，连接光源和运动控制器即可得到OCT信号。

Integrating interferometer, delay line, balance detectors, and VOA devices together, with built-in drivers. OCT signal can be obtained by connecting light source and motion controller.