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What is a Transparent Heater Window?

Transparent Heater Windows are used for widely differing purposes from keeping food hot or cold to preventing aircraft windows from frosting over. In essence a Transparent Heater Window is a pane of glass with an application of transparent semiconductor coating that has electric current passed through the coating. The electrical resistance of the coating creates heat energy which heats the glass, which then radiates heat.

 

Transparent Heater Windows were originally developed during World War II for use on the windshields of aircraft. Certain aircraft were deployed to high altitude or cold weather environments and were susceptible to frost forming on the windshield which obscured the vision of the crew.

 

Several different types of Transparent Heater Windows exist. The most common form can be seen used in the rear window of an automobile as a de-fogger. The obvious flaw in using that particular iteration of the technology is the fact that it has visible lines which can obscure vision. For that reason Transparent Conductive Oxide coatings are used. TCO’s come in several forms, but the three most common are Fluorine-doped Tin Oxide (SnO2:F), Indium-Tin Oxide (ITO), and thin stacks of oxides and metallic silver. ITO coatings are robust and suited for a variety of industrial uses.

 

Using a TCO in a transparent heater window also has another note worthy property. The metal oxides used not only conduct electricity, but also reflect heat. Without a TCO the glass surface absorbs heat as a high-emissivity material. Adding the coating allows the glass to reflect heat as a low-emissivity material.

 

Transparent Heater Windows are used in a wide variety of applications today. They are used in supermarket freezers and cold item displays to reduce the amount of environmental heat that reaches the contents while allowing customers to view what is inside. These windows are also used in outdoor security camera housings to prevent frost from forming and obscuring the view of the camera. Please call us to discuss how this technology is, or could be, used in your application.

 

For more information about transparent conductive oxide coatings or LuxVu Transparent Heater Windows please call 800.426.2864 or email us.

 

Abrisa Technologies is a recognized global supplier of high quality, fabricated glass components, optical thin film coatings, and custom glass solutions for a wide variety of industries. From our US based Abrisa Industrial Glass fabrication facility in Santa Paula, CA and our ZC&R Coatings for Optics division in Torrance, CA we serve diverse industries such as microelectronics and displays, semiconductor, military, automotive, aerospace, medical, biomedical and scientific R&D. We provide custom specialty flat glass and coating products for applications such as: flat panel display, touch and gesture recognition; visible to IR imaging and surveillance; entertainment, indoor and outdoor lighting; advanced instrumentation; and photonics.


Information

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