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New heads-up display technology uses DuPont™ Butacite® Wedged PVB

DuPont is the leading worldwide supplier of wedged PVB for automotive Head-Up Display applications.

Delphi Delco Electronic Systems of Kokomo, Indiana (USA) is the world's leading supplier of automotive Heads-Up Display (HUD) units which depend on a wedge-shaped PVB interlayer in the car's windscreen for optimal visibility.

Delphi Delco's EyeCue Product Manager, Dale Hopkins, told LGN: "One of our biggest customers is General Motors which offers HUDs in its major option package for the Pontiac Bonneville, Grand Prix and Buick Park Avenue models. We also recently won a GM contract for HUDs in Pontiac's 2001 minivan model and for Chevrolet and Buick 2002 models".

"Whereas current commercializations use a fixed segment HUD, displaying basic data such as the speedometer reading, fuel and temperature levels, the new minivan commercializations will have reconfigurable HUDs. This means that they will be able to display a wider range of alphanumeric information concerning cellphone, radio and turn-by-turn navigation information, as well as other data currently displayed on the driver's dashboard information center. As an example, information from Japan's 'intelligent highway systems' could be displayed well on our reconfigurable HUD's".

"Wedged PVB provides the best cost-performance choice for today's automotive manufacturers when it comes to HUD technology. We had considered alternative technologies such as holographic patches for Delphi's HUDs but these were simply too costly for mass commercialization. Butacite® wedged PVB does the job perfectly."

Delphi Delco Optics Engineer, Scott Spink, explained: "In the Heads-Up Displays, the image that the driver sees is reflected off the inner and outer surfaces of the windshield. The inner surface produces the primary image seen from the driver's position while the outer surface produces a second, dimmer image. In a conventional, non-wedged windshield, these images appear slightly separated due to refraction through the glass layers and this separation is known as 'ghost'. Thanks to wedged PVB, we can align the two images into one, eliminating 'ghosting'. DuPont supplies the wedged PVB for our most popular HUD systems."

DuPont's patented Butacite® wedged PVB interlayer technology allows HUD images to be displayed without distortion while giving windscreen manufacturers PVB with maximum handling ease for commercial production. The company is the leading worldwide supplier of wedged PVB for HUD applications.


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