Land vehicles: bodies and tops – Bodies – Glare screen or visor
Reexamination Certificate
2001-05-02
2001-10-09
Pape, Joseph D. (Department: 3612)
Land vehicles: bodies and tops
Bodies
Glare screen or visor
C296S096190
Reexamination Certificate
active
06299231
ABSTRACT:
BACKGROUND OF INVENTION
The present invention relates to vehicle glare reduction systems, and more specifically, to a veiling glare reduction system.
The problem of veiling glare is nothing new to vehicle designers. Veiling glare occurs when light passes through the windshield, reflects off of the dashboard back onto the windshield, and reflects off the windshield and into the driver's eyes. The driver sees a virtual image of the lit dashboard beyond his windshield that “veils” or impedes his ability to see the road ahead. Increased window slope or “cab forward” designs, while aesthetically pleasing and aerodynamically preferred, increase the likelihood of veiling glare. The use of light colored, glossy finish dashboards also increases veiling glare.
In order to compensate for veiling glare, designers have been forced to limit the degree of windshield slope as well as to use dark colors and a corrugated, non-glossy texture on the dashboard surface. A holographic windshield system has been envisioned to combat the veiling glare problem, which however, is complicated and expensive to manufacture.
It would therefore be beneficial to provide vehicle designers with the flexibility to use lighter colored, glossier dashboards and cab forward windshield designs by eliminating the veiling glare problem with a simple and inexpensive system.
SUMMARY OF INVENTION
It is an object of the present invention to provide a veiling glare reduction system that overcomes the disadvantages of the prior art.
It is a feature of the present invention to use a combination of light polarization filters to accomplish the function of eliminating veiling glare.
The present invention advantageously provides a vehicle veiling glare reduction system including a windshield having an inner and outer surface, a first polarization layer disposed on at least one windshield surface adapted to polarize light in a first predetermined direction, a dashboard having an upper surface, and a second polarization layer disposed on the dashboard upper surface adapted to polarize light in a second predetermined direction other than the windshield inner surface.
REFERENCES:
patent: H139 (1986-10-01), Task
patent: 5316359 (1994-05-01), Lansinger
patent: 5335099 (1994-08-01), Smith
patent: 5926310 (1999-07-01), Tamura et al.
patent: 5999314 (1999-12-01), Sakura et al.
patent: 6056397 (2000-05-01), Berlad
patent: 6089643 (2000-07-01), Wang et al.
Carpenter Scott
Coppiellie Raymond L.
Ford Global Technologies Inc.
Pape Joseph D.
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