1)vignetting,光晕，光损失2)light-leakage loss,光漏损失<光>3)transmittance loss,透光损失4)loss of fluorescence,荧光损失5)optical loss,光耗损失6)light energy loss,光能损失
用法和例句
The transmittance loss of laminated glass due to reflection , absorption and scatter of light is reconfirmed and the steps to reduce transmittance loss are suggested in this paper .