Vehicle Display Optical Layout for Real 3D Depth Perception
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Solution Overview
Problem
Conventional vehicle displays struggle to provide large-screen 3D image information due to their strip-shaped form and limited space, and two-layered displays fail to create a realistic 3D effect by only adjusting image size.
Innovation Solution
A vehicle display device using a semi-transmissive mirror and movable displays to synthesize real and virtual images, allowing controlled movement of displays to create a substantial depth effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a two-layered display method is used to display three-dimensional image information, then image information can be displayed on an overlapping fixed screen, but it is difficult to express a real 3D effect because depth is only expressed by adjusting image size
Solution Approach 1:
The patent applies the dynamics principle by making the display screen movable instead of fixed. The display screen can move along the optical path between the light synthesizer and the user's eye, enabling dynamic adjustment of the virtual image's apparent distance. This movement allows the system to express real depth by changing the position of the virtual image in space, rather than just adjusting image size on a fixed screen.
Solution Approach 2:
The patent applies the dimensionality change principle by adding the depth dimension (Z-axis) to the display. By moving the display screen along the optical path, the virtual image can be positioned at different distances from the user's eye, creating a three-dimensional effect. This transforms the traditional two-dimensional display into a three-dimensional experience by controlling the apparent distance of the virtual image.
2Area of stationary object
If conventional vehicle displays with standard ratios are used, then various gauge information can be displayed, but it is extremely difficult to produce a large-screen display above a predetermined size due to the strip-shaped form and limited space
Solution Approach 1:
The patent applies the intermediary principle by introducing a light synthesizer (semi-transmissive mirror) as a mediator between the display screen and the user's eye. This light synthesizer creates a virtual image that appears to be at a different location than the physical display screen. By using this optical intermediary, the system can create a large apparent display area without requiring a physically large screen, thus overcoming the space constraints in the vehicle cockpit.
3Device complexity
If the background screen and image information are displayed at the same distance, then the display is simple, but the depth perception is reduced
Solution Approach 1:
The patent applies the dynamics principle by enabling independent movement of the display screen along the optical path. This allows the system to dynamically adjust the distance between the virtual image and the user's eye, creating different depth relationships between the virtual image and the background screen. The display can transition from a simple configuration to a depth-rich configuration as needed.
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 device achieves a more realistic 3D image experience by overlapping and adjusting the distance between real and virtual images, enhancing depth perception.
Implementation Method 1
a light synthesizer that synthesizes a first image formed by reflecting incident light and a second image formed by transmitting incident light to form an image
Implementation Method 2
a light synthesizer that synthesizes a first image formed by reflecting incident light and a second image formed by transmitting incident light to form an image
Data Source
AI summary
The present invention relates to a vehicle display device comprising: a light synthesizer which reflects incident light to form a first image, transmits incident light to form a second image, and synthesizes the first and second images to form a synthesized image; at least one first display outputs an image to be reflected; at least one second display outputs an image to be transmitted; a position changer which moves at least one of the first and second displays in a direction close to or away from the light synthesizer; and a processor which controls the position changer to move at least one of the first and second displays such that, among the first and second images, one including a background image and the other including image information to be displayed overlappingly with the background image are away from or close to each other.