| 摘要 |
An armoured and bulletproof glass (glazing), designed for motor vehicles and consisting of several sheets of silicate glass (16, 17, 18 and 19), these being combined together and separated by thermoplastic interlayers (20, 21 and 22), includes a sheet of silicate glass (16) having a high absorptivity in the spectral band lying between 780 and 1200 nm. This sheet of silicate glass (16), or one of the other sheets which make up the armoured glass (17, 18 and 19), is also provided on one of its faces with a semireflective surface coating (23) having a high reflectivity for light rays whose wavelength lies between 780 and 1200 nm. The armoured glass thus possesses overall a transparency of less than 15% and, preferably, less than 10%, within the spectral band mentioned hereinabove. This type of armoured and structured glass offers a high degree of security in the case of night driving, since they also prove to be opaque for night vision equipment. <IMAGE> |
