Holographic Windshield Data Projection for Distortion Correction
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Solution Overview
Problem
Conventional head-up displays using curved windshields as projection surfaces in vehicles suffer from image distortions and poor optical parameters due to large field angles, leading to unclear and ergonomically suboptimal display of data for drivers.
Innovation Solution
An optical component comprising a plurality of light-emitting elements arranged in a first direction, with a deflection device adjusting light beams in a second direction perpendicular to the first, utilizing optical arrangements like cylindrical lenses or liquid crystal lenses to correct distortions and project data through a windshield as a waveguide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curved windshield is used as a projection surface at a large angle, then data can be projected onto the windshield, but image distortions occur and optical parameters deteriorate
Solution Approach 1:
The patent applies different optical properties to different regions of the windshield. The combiner hologram is positioned at a specific location with optimized local optical characteristics, while the projection surface maintains its curved geometry. This local optimization allows the system to accommodate the curved windshield shape without suffering from image distortions, as each region is designed to handle its specific optical requirements.
Solution Approach 2:
The patent introduces a combiner hologram as an intermediary element between the light source and the windshield projection surface. This intermediary component performs optical functions such as beam combining and wavefront correction, enabling the system to project clear images onto the curved windshield while maintaining good optical parameters. The combiner acts as a mediator that reconciles the conflict between the curved projection surface and image quality.
2Ease of operation
If a projection surface is used on the windshield, then data can be displayed, but the display becomes unclear and ergonomically suboptimal due to curvature and viewing angle variations
Solution Approach 1:
The patent segments the display system into distinct functional components: a light source unit, a combiner hologram, and a projection surface on the windshield. This segmentation allows each component to be optimized independently - the combiner hologram handles beam manipulation and wavefront correction, while the projection surface provides the display area. This modular approach enables clear image projection despite the curved windshield geometry.
Solution Approach 2:
The patent transitions from a direct 2D projection approach to a 3D optical path manipulation approach. By using a combiner hologram that works in three-dimensional space to manipulate light beams and correct wavefronts before they reach the curved projection surface, the system achieves clear images that account for the complex spatial relationships and viewing angle variations in the vehicle environment.
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 solution enables efficient, distortion-free data projection onto a curved windshield, enhancing image clarity and ergonomic viewing for drivers by compensating for windshield curvature and improving optical transmission.
Implementation Method 1
utilizing optical arrangements like cylindrical lenses or liquid crystal lenses to correct distortions and project data through a windshield as a waveguide
Implementation Method 2
project data through a windshield as a waveguide
Implementation Method 3
a deflection device for adjustably deflecting the light beams in a second direction, wherein the second direction differs from the first direction
Data Source
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AI summary
The invention relates to an imaging device for a data projection system and an optical component and a corresponding data projection system. The imaging device comprises a multitude of imaging elements (10) arranged in a first direction of light and a deflection device (11) for deflecting light beams in a second direction. The optical component can be a windshield which is provided with holograms.