Back Windows

     Usually back windows are made from single tempered glass with thickness of 3. 15-3. 85 mm. The back window indirect visibility is achieved via the internal mirror, and opticaldefects are less critical: as a consequence, back windows can feature relevant curvature bothin horizontal and vertical planes. To facilitate visibility towards all rearward areas，backwindows are sometimes extended to the sides and lower part of the rear body.

    Back windows are usually bonded using adhesives to the body with process，materialsand design similar to the windshields；in common, they also share a structural task, mainlyin terms of body stiffness，particularly important in the case of missing rear bulkhead.

    Specific functions of the back windows include heating, demisting and deicing，whilesometimes accommodating antennae on the internal surfaces, using silk-screens and copperelectric conductors. These devices must be designed to provide sufficient heat to deice ordemist the back windows within few minutes，while not subjecting the glass to overheatingand not obstructing rear visibility.