Head-Up Display Virtual Image Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing head-up display devices often cause discomfort as virtual images appear to float above the road surface due to positioning issues, especially when the road is not flat or the vehicle's posture changes, leading to a mismatch with the road surface.
Innovation Solution
A head-up display device that positions at least part of the virtual image display region below the road surface, using a display unit and relay optical system to ensure the virtual image appears to stick to the road surface, with adjustments made by actuators and sensors to maintain stability despite changes in vehicle posture or road surface unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the virtual image display region is positioned at the same height as the road surface, then the virtual image appears to stick to the road surface, but when the road surface is not flat or the vehicle posture changes, the virtual image display region floats above the road surface causing viewer discomfort
Solution Approach 1:
The patent positions the virtual image display region in the depth dimension below the road surface rather than at the same height, creating a virtual image that appears to stick to the road surface while maintaining stability against vehicle posture changes and road unevenness
Solution Approach 2:
The patent pre-positions the virtual image display region below the road surface in advance, so that even when the vehicle posture changes or the road surface is uneven, the virtual image maintains its apparent adhesion to the road surface without floating
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 allows for a stable and comfortable display of virtual images that appear to stick to the road surface, reducing discomfort and maintaining visibility even when the vehicle's pitching angle or road surface changes.
Implementation Method 1
a head-up display device that creates a virtual image by the display light reflected by a reflective transmissive member such as the front window shield or combiner of a vehicle
Data Source
AI summary
Provided is a head-up display device which can stably display a virtual image viewed so as to be stuck to a road surface, during traveling of a vehicle. A head-up display device according to the present invention is provided with a display means for projecting display light to a front window shield provided to a vehicle, and generating and displaying a virtual image, formed by the display light reflected at the front window shield, so as to be superposed on an actual scene seen through the front window shield. At least a part of a virtual image display region in which the virtual image is displayed is positioned below a road surface on which the vehicle travels.