Backlite with Defogger
Safety with Clear vision
Defogger glass removes ice and condensation from the backlite or rear glass electrically, through conductive patterns that heat up when charged, both within and outside the car.
Features and Benefits
- Clear visibility in all weather conditions
Applications
Backlite
Frequently Asked Questions
A rear defogger in automotive glass is an electric heating system designed to remove condensation
(fogging) and ice from the glass surface. A car rear defogger is embedded within the glass and
utilises fine, electrically conductive patterns, which when activated, heat up and raise the glass
temperature. This gentle heat quickly evaporates moisture or melts frost, ensuring clear vision for
the driver and functioning as a vital component for overall vehicle safety.
A car rear defroster refers to the vehicle’s rear window that has the defogging technology built
directly into the glass itself. It is a specialised automotive glass assembly featuring a network of patterns which heat up to
remove ice and condensation, ensuring clear rear visibility. This rear window defogger enhances
driving safety, especially during rainy, cold or humid weather conditions.
The main advantage of a backlite with a defogger over regular rear glass is its ability to ensure
clear visibility in all weather conditions. Regular glass is easily obscured by condensation, frost
or ice, which creates a critical safety hazard by blocking the driver’s rear view. The rear defogger
provides an active, electrical solution to quickly and efficiently clear these obstructions by
heating the glass. This functionality is paramount for maintaining the driver’s awareness of traffic
and surroundings, thereby enhancing safety.
A rear windshield defogger works through a process of electrical resistance and heat generation.
Fine, electrically conductive patterns are printed onto the rear / backlite glass surface. When the
defogger is switched on, an electrical current is passed through these heating elements. The
resistance within the material causes it to warm up, and this heat is then transferred to the glass.
This action raises the glass temperature, evaporating condensation and melting any ice or frost,
which restores clear vision quickly and efficiently.
The backlite defogger is most useful in conditions that cause moisture or ice to obscure the rear
view. These include cold weather, where frost or ice can form on the exterior of the glass. It is
also invaluable in humid, rainy or misty conditions where condensation rapidly fogs up the inner
glass surface, a frequent occurrence when the cabin temperature is warmer than the outside air. By
rapidly clearing the glass, the rear defroster is critical for maintaining passenger safety during
challenging environmental changes
The power consumption of rear defogger glass is moderate. It draws current when active (to heat the
conductive lines) but is used only as needed (not continuously). Because the defogger is only turned
on briefly until the glass clears, the overall energy draw is relatively small in the context of the
vehicle’s electrical system.