optical light filter

• 光学滤光器,滤色镜

optical light filter的用法和样例：

例句

1. Filter selection is made using inherent spectra.
   滤色镜的选择必须利用固有光谱。
2. A yellow filter is placed in front of the camera lens to assure that no blue light will be imaged.
   为了不使蓝光进入相机而成像，可在相机的透镜前加一黄滤色镜。