It absorbs shorter light wavelength below 480 nm to protect eyes
所有跟帖:
• UV電筒就是發出此波段的光,如此一來豈非減弱電筒的光亮?黃片就能減弱UV?那紅藍片呢? -chinomango- ♂ (0 bytes) () 10/11/2020 postreply 10:20:39
• Red, blue don’t work in your case. -為你而狂- ♀ (165 bytes) () 10/11/2020 postreply 11:00:21
• 謝謝,那隻是為保護眼睛而非增強熒光了?照相機UV濾鏡是無色的, -chinomango- ♂ (152 bytes) () 10/12/2020 postreply 13:47:47