Patent
Device for the visual display of operating states of a motor vehicle or the like on the windscreen of the latter
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TLDR
In this paper, the visual display of operating states of a motor vehicle or the like on the windscreen of the latter approximately at the eye level of the driver is presented. But the display is not shown in detail.Abstract:
Device for the visual display of operating states, in particular of critical operating states, of a motor vehicle or the like on the windscreen (12) of the latter approximately at the eye level of the driver. For individual adjustment both to the driver and the external conditions, such as light conditions, and for reliable distinguishing at least one light source (22), mountable on the top of the dashboard (16) of the motor vehicle extending approximately horizontally, is provided with a light beam directed against the windscreen (12), the light source (22) being individually adjustable in its intensity or luminosity and/or the direction of the emitted light beam (36).read more
Citations
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References
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Patent
Speedometer optical projection system
TL;DR: In this article, a system for projecting a speedometer or other instrument reading as a virtual image into the field of view of a vehicle operator includes the windshield and a lens system containing a lens that substantially corrects aberrations caused by curvature of the windshield.
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Laminated glass having electrically operated instrument indicator means embedded in the interlayer
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Optical device on motor vehicles
TL;DR: In this article, a partially transparent mirror is used to reflect graphically represented signals into the field of view of the driver of a vehicle, where the reflection factor of the useful light at the semi-transparent mirror is very high, and a disturbing defect due to optical reflections occurring in the observation space is suppressed by the circular polariser.
Patent
Head-up display for car windscreen - with partially reflecting layer and polarising filter to eliminate stray reflections
TL;DR: In this paper, the top of the dashboard is fitted with projection windows to project instrument information onto the windscreen for a head-up display, which produces a clear primary image of the information.