It absorbs shorter light wavelength below 480 nm to protect eyes

所有跟帖： 

• UV电筒就是发出此波段的光，如此一来岂非减弱电筒的光亮？黄片就能减弱UV?那红蓝片呢？ -chinomango- ♂ (0 bytes) () 10/11/2020 postreply 10:20:39

• Red, blue don’t work in your case. -为你而狂- ♀ (165 bytes) () 10/11/2020 postreply 11:00:21

• 谢谢，那只是为保护眼睛而非增强荧光了？照相机UV滤镜是无色的， -chinomango- ♂ (152 bytes) () 10/12/2020 postreply 13:47:47