AR Display Module Positioning for Stable Multi-Depth Imaging
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Solution Overview
Problem
Existing augmented reality display systems face high costs and display quality issues due to the use of multiple displays and temperature-sensitive liquid lenses, which affect image display effects.
Innovation Solution
An augmented reality display apparatus with a depth acquisition module, display module, processing module, and lift module, where the lift module drives the display module to move based on displacement information, maintaining an object-side telecentric optical structure to ensure consistent light angles and achieve multi-depth display without increasing cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple displays are used to achieve multi-depth display, then virtual images can be displayed at different depth positions, but the cost of the augmented reality apparatus increases
Solution Approach 1:
The patent uses a movable display module that can dynamically adjust its position along the optical axis to achieve multi-depth display. The display module is driven by a driving assembly that allows it to move between different depth positions, enabling a single display to replace multiple fixed displays. This dynamic adjustment mechanism resolves the contradiction by providing multi-depth capability without requiring multiple displays simultaneously.
Solution Approach 2:
The single display module is designed to perform multiple functions by moving to different positions. It can display virtual images at various depth positions (first depth, second depth, etc.) and can adapt to different viewing scenarios. This multi-functionality allows one display component to replace what would traditionally require multiple displays, thereby reducing cost while maintaining versatility.
2Adaptability or versatility
If a liquid lens is used as an optical processor to control light angle and direction, then the display can adjust to different positions, but the liquid lens has strict temperature requirements that affect image display quality
Solution Approach 1:
The patent removes the liquid lens component from the optical system and replaces it with a movable display module approach. By extracting the problematic liquid lens, the system eliminates temperature sensitivity issues while maintaining the ability to control light angle and direction through mechanical positioning of the display module. The display module's movement along the optical axis achieves the same functional effect without the thermal constraints.
3Adaptability or versatility
If the display module moves to different positions to achieve multi-depth display, then various depth planes can be displayed, but the light angles may vary affecting display quality
Solution Approach 1:
The patent incorporates a depth acquisition assembly that detects the position of the user's eyes or head, and a processing assembly that calculates the appropriate display module position based on this feedback. The system continuously monitors and adjusts the display module's position to maintain optimal light angles for the user's viewing position. This closed-loop feedback mechanism ensures light angle consistency across different depth planes and user positions.
Solution Approach 2:
The display module is designed to dynamically adjust its position in real-time based on user interaction and viewing conditions. By continuously moving the display module to optimized positions, the system maintains consistent light angles even when displaying at different depth planes. This dynamic positioning capability allows the system to adapt to various display scenarios while preserving optical quality.
Data Source
AI summary
An augmented reality display apparatus is provided and includes: a display system configured to display a target image; a depth acquisition assembly configured to acquire depth position information of a target object, the target object including at least one of human eyes and the target image; a processor fixedly connected to the display system, the processor being configured to determine displacement information of the display system based on the depth position information of the target object acquired by the depth acquisition assembly; a spectacle frame connected to the display system and the depth acquisition assembly; and a lifter fixedly connected to the spectacle frame and the processor, the lifter being configured to drive the display system to move to a target position relative to the spectacle frame based on the displacement information determined by the processor.