Head-Up Display Diffusion Device for Multi-Distance Image Projection
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Solution Overview
Problem
Current head-up display (HUD) systems are bulky and costly due to multiple image units, which affects cooling efficiency and driving safety by requiring drivers to look away from the road to access information.
Innovation Solution
A HUD apparatus with a reduced number of parts, utilizing a display unit, diffusion device, and optical system to project two distinct light beams onto a windshield, forming separate images at different distances, thereby reducing the overall size and cost while enhancing driving safety through augmented reality displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple image units are equipped in HUD to display multiple images, then the information display capability is improved, but the number of parts increases resulting in high cost and huge volume
Solution Approach 1:
A single image unit is designed to perform multiple functions by sequentially projecting different images (e.g., speed information, navigation information, warning information) at different positions on the windshield. The image unit acts as a universal component that can display various types of information, eliminating the need for multiple dedicated image units for different information types.
Solution Approach 2:
The system dynamically switches between different information display modes by controlling the single image unit to project different images at different positions on the windshield based on driving conditions and information priority. This dynamic allocation of the image unit allows one component to serve multiple purposes throughout operation.
2Adaptability or versatility
If multiple image units are equipped in HUD to display multiple images, then the information display capability is improved, but the volume and cost increase
Solution Approach 1:
A single image unit is designed to perform multiple functions by sequentially projecting different images (e.g., speed information, navigation information, warning information) at different positions on the windshield. The image unit acts as a universal component that can display various types of information, eliminating the need for multiple dedicated image units for different information types.
Solution Approach 2:
Multiple information display functions that would traditionally require separate image units are merged into a single image unit. The system combines the projection capabilities for different information types (speed, navigation, warnings) into one integrated component, reducing the overall volume while maintaining full information display capability.
3Adaptability or versatility
If multiple image units are equipped in HUD, then the information display capability is improved, but the cooling effect deteriorates
Solution Approach 1:
A single image unit is designed to perform multiple functions by sequentially projecting different images (e.g., speed information, navigation information, warning information) at different positions on the windshield. The image unit acts as a universal component that can display various types of information, eliminating the need for multiple dedicated image units for different information types.
Solution Approach 2:
Multiple information display functions that would traditionally require separate image units are merged into a single image unit. The system combines the projection capabilities for different information types (speed, navigation, warnings) into one integrated component, reducing the overall volume while maintaining full information display capability.
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 reduces the number of parts and space occupied by the HUD, improving cooling efficiency and safety by allowing drivers to view critical information without diverting attention from the road, with static and dynamic traffic information displayed in a way that enhances driving safety.
Implementation Method 1
The diffusion device includes a first diffusion region and a second diffusion region, where the first and the second diffusion regions respectively have an optical structure
Implementation Method 2
The first diffusion region and the optical system are located on a transmission path of the first light beam and guide the first light beam to the target element
Data Source
AI summary
A head-up display apparatus adapted to project an image light beam onto a target element is provided. The head-up display apparatus includes a display unit, a diffusion device, and an optical system. The display unit is adapted to provide the image light beam comprising a first light beam and a second light beam. The diffusion device includes a first diffusion region and a second diffusion region, and optical structures of the first and the second diffusion regions are different. The first diffusion region and the optical system are located on a transmission path of the first light beam and guide the first light beam to the target element to form a first image. The second diffusion region and the optical system are located on a transmission path of the second light beam and guide the second light beam to the target element to form a second image.