cover lens

• 覆盖镜头；盖板玻璃

cover lens的用法和样例：

例句

1. The gunsight has an infrared lens for night vision.
   射击瞄准器装有用于夜间视力的红外线镜头。
2. The lens hood is used to cover up the lens.
   遮光罩是用来遮盖镜头的。