Vehicle Head-Up Display Mirror Control for Multi-Depth AR Images
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Solution Overview
Problem
Current head-up displays for vehicles lack the ability to dynamically adjust the position, size, depth, transparency, and inclination of virtual images displayed on the windshield, limiting their effectiveness in implementing augmented reality features.
Innovation Solution
A head-up display system that includes a mirror unit with a first reflective mirror, a polarized reflective mirror, and a second reflective mirror, along with a controller that adjusts the inclination of these mirrors to change the display positions and characteristics of multiple virtual images, allowing for enhanced augmented reality experiences by separating, overlapping, or modifying the virtual images based on driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple virtual images are displayed through a windshield to enhance convenience, then information display capability is improved, but control over display position, size, depth, and transparency becomes limited
Solution Approach 1:
The patent applies dynamics by making the mirrors adjustable rather than fixed. The first and second reflective mirrors can be independently tilted or rotated to change the optical paths, enabling dynamic control over the position, size, depth, and transparency of multiple virtual images displayed on the windshield.
Solution Approach 2:
The patent implements parameter changes by allowing adjustment of mirror inclination angles and positions. By changing the physical parameters of the mirrors (tilt angle, rotation angle, position), the system can dynamically modify display characteristics including image position, size, depth, and transparency to achieve desired augmented reality effects.
2Adaptability or versatility
If the inclination of mirrors is adjusted to change virtual image characteristics, then display flexibility is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the mirror adjustment system into separate, independently controllable units. The first reflective mirror and second reflective mirror are adjusted separately through individual adjustment mechanisms, allowing flexible control over different virtual image parameters without requiring complex coordinated movement of all components.
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
Enables the dynamic adjustment of virtual images to improve driver awareness and safety by providing relevant information in a more intuitive and interactive manner, enhancing the implementation of augmented reality features in vehicles.
Implementation Method 1
a first reflective mirror configured to reflect the image light toward a windshield of the vehicle
Implementation Method 2
a polarized reflective mirror configured to reflect the image light having a first polarization direction and to transmit the image light having a second polarization direction orthogonal to the first polarization direction
Implementation Method 3
a second reflective mirror configured to reflect the image light reflected by the polarized reflective mirror
Data Source
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AI summary
The present invention relates to a head-up display for a vehicle, comprising a mirror unit comprising a first mirror for reflecting first and second image lights toward a windshield of the vehicle; wherein the mirror unit comprises: an image generator configured to emit light linearly-polarized in a first direction, and light linearly-polarized in a second direction orthogonal to the first direction; a second mirror disposed to be separated from the first mirror so as to transmit the light linearly-polarized in the first direction, and reflect the light linearly-polarized in the second direction to the first mirror; a third mirror disposed to be separated from the second mirror so as to reflect the light linearly-polarized in the first direction that has transmitted through the second mirror to the first mirror; a display layer located at the windshield of the vehicle to display a first virtual image corresponding to the first image light in a first region, and display a second virtual image corresponding to the second image light in a second region; and a controller configured to reflect the first image light and second image light toward the windshield to display the first virtual image and the second virtual image, wherein the first virtual image and the second virtual image have different depths of view.