Projection assembly for a head-up display (HUD) with p-polarised radiation

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12174374
APP PUB NO 20220342217A1
SERIAL NO

17763565

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Abstract

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A projection assembly for a head-up display (HUD), includes a windshield, including outer and inner panes that are joined to one another via a thermoplastic intermediate layer and having an HUD region; and a projector aimed at the HUD region. The radiation of the projector is predominantly p-polarised, and the windshield is provided with a reflection coating that is suitable for reflecting p-polarised radiation. The reflection coating has exactly one electrically conductive layer based on silver, a lower dielectric layer or layer sequence whose refractive index is at least 1.9 is arranged beneath the electrically conductive layer, an upper dielectric layer or layer sequence whose refractive index is at least 1.9 is arranged above the electrically conductive layer, the ratio of the optical thickness of the upper dielectric layer or layer sequence to the optical thickness of the lower dielectric layer or layer sequence is at least 1.7.

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Patent Owner(s)

Patent OwnerAddress
SAINT-GOBAIN SEKURIT FRANCE60150 THOUROTTE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fischer, Klaus Alsdorf, DE 181 3278
Hagen, Jan Bonn, DE 41 126
Huhn, Norbert Herzogenrath, DE 37 223

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