Window panel for use in e.g. motor vehicle, has laminated glass panel including two glass sheets separated by gap that is defined between balanced acoustic attenuation indexes of laminated glass panel and simple glass panel

摘要

The panel has a laminated glass panel (10) including two glass sheets (11, 12) having thickness in a predetermined range. A plastic film (13) couples the glass sheets. The glass sheets are separated by a gap having thickness equal to that of the panel. The gap defined between balanced acoustic attenuation indexes of the laminated glass panel and a simple glass panel (20) does not exceed a predetermined value.