Adjustable HUD Shielding Element for Glare Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Head-up displays in motor vehicles often require design concessions due to the visibility of the mirror bench and matt black surface, which can be aesthetically undesirable and limit installation options, as existing solutions are not adaptable to different installation spaces.
Innovation Solution
A head-up display system with an adjustable or movable screening element, controlled by a device that determines the beam path of deflected light and adjusts the shielding element's position only when necessary to prevent glare, allowing for variable installation and design of the reflection-free area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a fixed mirror bench with matt black surface is used to shield reflections, then glare protection is provided, but the design is aesthetically undesirable and installation options are limited
Solution Approach 1:
The mirror bench is designed as a movable component that can be adjusted between different positions. The adjustment device enables the mirror bench to move along a guide structure, transitioning between a first position for glare protection and a second position for aesthetic integration. This dynamic capability resolves the contradiction by providing glare protection only when needed while maintaining design flexibility.
Solution Approach 2:
The shielding function is separated from the aesthetic surface. The mirror bench is designed as a distinct movable component that can be independently positioned, rather than being fixed as part of the housing structure. This segmentation allows the shielding element to be activated only when glare is present, while the housing maintains its clean aesthetic appearance at all times.
2Object-affected harmful factors
If the mirror bench is positioned to shield the eye point, then reflection-free area is created, but the mirror bench and matt black surface become visible to the driver
Solution Approach 1:
The mirror bench transitions between visible and invisible states based on operational requirements. When glare protection is needed, the mirror bench moves to the first position where it shields the eye point but remains hidden from the driver's direct view. When glare is not present, the mirror bench returns to the second position where it is completely invisible, eliminating visual disturbance while maintaining the reflection-free area capability.
Solution Approach 2:
The mirror bench is extracted from the fixed housing structure and made into a separate movable component. This extraction allows it to be positioned precisely when needed for glare protection and retracted when not needed, preventing it from being a permanent visual disturbance in the driver's field of view.
3Object-affected harmful factors
If a fixed anti-glare element is installed, then glare protection is provided, but redesign is required for different installation spaces
Solution Approach 1:
The adjustable mirror bench mechanism is designed as a universal solution that can be adapted to different installation spaces and vehicle models. The guide structure and adjustment device allow the mirror bench to be positioned optimally for various configurations, eliminating the need for complete redesign when installing in different vehicles or locations.
Solution Approach 2:
The movable mirror bench with adjustment capability provides a universal solution that can accommodate different installation spaces. Rather than being fixed for a specific location, the dynamic positioning system allows the same basic design to be installed in various locations and adjusted to achieve optimal glare protection for each specific application.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces glare and allows for flexible installation of the head-up display without redesigning the anti-glare element, making it nearly invisible in most positions, thus enhancing user experience and design flexibility.
Implementation Method 1
The inside of the mirror bench is usually designed in matt black to absorb the light
Implementation Method 2
a head-up display... through which a projection beam path of a projection emerges from a housing of the head-up display
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method for reducing reflection when operating a head-up display (12) of a motor vehicle (10), wherein the head-up display (12) comprises a covering disc element (14) and a dimming element (16) for dimming a deflected light beam (30) of ambient light. A control device (36) determines (S1) a beam path (34) of the deflected light beam (30), records (S2) a current position and an orientation of the dimming element (16) and determines (S3) a region (50) to be kept clear of the deflected light beam (30) around an eye point (32) of a user (24). On the basis thereof, the control device (36) determines (S4) whether the deflected light beam (30) passes through the region (50) to be kept clear. If this is the case, the control device (36) generates a control signal for adjusting a position of the dimming element (16) for dimming the deflected light beam (30) by means of an adjustment device (54) of the head-up display (12), and the adjustment device (54) adjusts (S5) the position of the dimming element (16) on the basis of the control signal.