Holographic Head-Up Display Panel Positioning Mechanism
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Solution Overview
Problem
Conventional head-up displays in motor vehicles require significant installation space and increased construction complexity to enlarge the display surface for augmented-reality content, impairing surrounding components and limiting adaptability to driver requirements.
Innovation Solution
A head-up display system featuring a transparent holographic light-guide display panel coupled with a projection unit and a guide device that adjusts the display panel between use and parked positions, allowing the display image to be superimposed on the real environment within the driver's field of view while minimizing installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display surface is significantly enlarged to represent local or contact-analogous augmented-reality contents, then the field of view coverage is improved, but the structural size of projection devices increases and construction complexity increases
Solution Approach 1:
The patent transitions from a conventional 2D display surface to a 3D volumetric holographic display. The holographic display unit creates three-dimensional images in space rather than on a flat surface, enabling large field of view coverage without proportionally increasing the physical footprint of the projection device. This dimensional change allows the display to occupy virtual space while maintaining compact hardware.
Solution Approach 2:
The patent replaces conventional mechanical projection systems with a holographic optical system. Instead of using large mechanical projectors that require complex alignment and focus adjustment mechanisms, the system uses holographic waveguides and optical elements to achieve the same display function with reduced mechanical complexity and smaller form factor.
2Area of stationary object
If the display surface is significantly enlarged to represent local or contact-analogous augmented-reality contents, then the field of view coverage is improved, but the installation space required increases
Solution Approach 1:
The holographic display unit is integrated into the existing instrument panel structure. The display components are nested within the available space in the instrument panel, utilizing vertical and lateral spaces that would otherwise be unused. This nesting approach allows the large display surface to be accommodated within the constrained installation volume of the vehicle dashboard.
Solution Approach 2:
By creating a three-dimensional holographic display, the system expands the display area into the z-dimension (depth) rather than requiring proportional expansion in the x-y plane. This allows the display to cover a large field of view while maintaining a compact physical profile that fits within the instrument panel's available volume.
3Volume of stationary object
If a transparent holographic light-guide display panel is used to minimize installation space, then the installation space requirement is reduced, but the device complexity increases
Solution Approach 1:
The patent employs a thin transparent holographic light-guide display panel instead of bulky projection hardware. This thin-film technology integrates optical elements directly into a transparent substrate that can be mounted in the instrument panel with minimal space. The light-guide panel uses embedded waveguides and holographic elements to achieve the display function without requiring complex external optical assemblies.
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
The system enables an adaptable and space-efficient head-up display that covers a larger field of view, allowing for augmented-reality content representation without compromising surrounding components, and can be easily removed from the driver's view when not in use, thus enhancing driver experience and reducing installation complexity.
Implementation Method 1
a transparent holographic light-guide display panel for outputting the display image
Implementation Method 2
Using a focusing optical unit, the display image is directed via the display surface in the direction of the driver in the form of a slightly diverging bundle of rays, and so the driver perceives a virtual display image
Data Source
AI summary
A head-up display system for a motor vehicle includes a projection unit for providing a display image; a transparent, holographic optical fiber display panel for outputting, on a display surface, a display image that is coupled into the display panel via a coupling-in region; and a guide device designed to move the display panel between an operational position and a parked position.