light-emitting diode coupler

例句：

1. 1. Thenew LED coupler significantly improves the brightness of our display screen.
   这款新型LED耦合器极大地提高了我们显示屏的亮度。
2. 2. The engineer used an LED coupler to connect two circuit boards together.
   工程师使用了一个LED耦合器将两个电路板连接在一起。
3. 3. The LED coupler is a critical component in the design of modern electronic devices.
   LED耦合器是现代电子设备设计中的关键组件。