Optical element for a vehicle windshield

Details Optical element for a vehicle windshield Optical element for a vehicle windshield

B - Operations, Transporting

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B60J 1/02 (2006.01) B32B 27/36 (2006.01) B60J 3/00 (2006.01) G02B 5/26 (2006.01) G02B 5/28 (2006.01) G02B 27/01 (2006.01) H05B 3/84 (2006.01) B60J 1/00 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2022063

06-12 (9885)A OPTICAL ELEMENT FOR A VEHICLE WINDSHIELD ABSTRACT OF THE DISCLOSURE An optical element for a motor vehicle wind- shield comprises, in combination, an interference filter having one or more light-reflecting metal layers and one or more reflection-suppressing layers for coacting with the one or more metal layers to minimize reflection and enhance transmission in the visible region, a gradient band continuation of the interference filter above the direct line of forward vision through a windshield when disposed in a motor vehicle for reflective rejection of infra-red solar energy, such band including a light-reflecting metal layer gradually increasing in thickness toward a lateral edge of the band, a transparent substrate supporting such filter and gradient band and plural bus bars substantially parallel to the lateral edge of the gradient band in electrical contact with the metal layers of the interference filter and the gradient band continuation.

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