Head-Up Display 2D 3D Optical Module Segmentation
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Solution Overview
Problem
Conventional Head-Up Display (HUD) systems in vehicles are limited in their ability to provide a large amount of information due to size constraints and suffer from decreased daytime visibility and fixed image positions, as they can only project 2D information on a small virtual screen.
Innovation Solution
The HUD apparatus incorporates a 2D and 3D display unit arrangement with a separation module that uses a Polarizing Beam Splitter or reflection prism to minimize light loss, allowing for simultaneous or selective output of 2D and 3D images, enabling more information to be displayed within a limited screen size while maintaining brightness and adjustability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional 2D HUD display is used, then the device complexity is low, but the quantity of information that can be displayed is limited due to screen size constraints
Solution Approach 1:
The display system is segmented into two independent display units: a first display unit for 2D information and a second display unit for 3D information. Each display unit has its own optical module, allowing them to function independently and combine their outputs to provide comprehensive information without interfering with each other's performance.
Solution Approach 2:
The patent transitions from a single 2D display plane to a combined 2D and 3D display system. The second optical module generates a 3D virtual image that adds a depth dimension to the traditional 2D HUD display, enabling more information to be conveyed within the same visual field without increasing screen area.
2Illumination intensity
If an optical system is used to enlarge the virtual image, then the visibility is improved, but light loss occurs due to structural limits
Solution Approach 1:
The optical system is divided into two separate optical modules, each handling one display unit. This segmentation allows each module to be optimized for its specific function with fewer light-loss-inducing components, as each module only needs to handle one display unit's optical path independently.
Solution Approach 2:
The first optical module is designed to be multi-functional, capable of generating both a first virtual image and a second virtual image. This universality reduces the need for additional light-lossy components by allowing one optical module to serve multiple display functions.
3Adaptability or versatility
If the virtual image position is fixed to a designed depth, then the optical system is simplified, but the adaptability is reduced
Solution Approach 1:
The system transitions from fixed virtual image positions to dynamically adjustable positions. The first optical module can generate virtual images at different depths (first virtual image at first depth, second virtual image at second depth), and the display units can be selectively activated based on driving conditions, providing dynamic adaptability without complex mechanical adjustment mechanisms.
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
This configuration allows for maximum information display without light loss, ensuring excellent daytime visibility and minimizing space requirements, with adjustable image depth and position through software processing, enhancing driver safety and information accessibility.
Implementation Method 1
a separation module (130) mounted on the optical path of the first optical module and the second optical module, and configured to separate light from the first display unit and light from the second display unit
Implementation Method 2
a separation module (130) mounted on the optical path of the first optical module and the second optical module, and configured to separate light from the first display unit and light from the second display unit, wherein the first optical module and the second optical module are vertically arranged
Data Source
Figure 1
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AI summary
An exemplary embodiment of the present disclosure includes an HUD apparatus, the HUD apparatus including a first optical module, a second optical module arranged at a predetermined angle relative to the first optical module, a separation module arranged on an optical path of the first and second optical modules to totally reflect a light of the first optical module and to project a light from the second optical module, and an optical system configured to output the light having passed the separation module.