Head Mounted Display Optical Element Merging Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-mounted display devices face challenges in reducing user dizziness and achieving comfort, lightness, and affordability due to the complexity of multi-layer displays required to alleviate vergence-accommodation conflict.
Innovation Solution
A head-mounted display device incorporating a first, second, and third display, along with an optical element that transmits and reflects images to create a multi-layer display effect, reducing vergence-accommodation conflict by providing multiple images with different depths to the user's eyes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple image planes are used to solve vergence-accommodation conflict, then visual comfort is improved, but device complexity and volume increase
Solution Approach 1:
The patent combines multiple display layers (first display, second display, and third display) into a single integrated optical system. The first and second displays are positioned at different depths, with the third display reflecting images to both eyes. This merging approach creates a multi-layer display effect that addresses vergence-accommodation conflict while maintaining a compact structure, avoiding the complexity of separate multi-plane systems.
Solution Approach 2:
The patent introduces an optical element (third display acting as a beam splitter/reflector) as an intermediary between the first/second displays and the user's eyes. This intermediary reflects images from the first and second displays to both eyes, enabling stereoscopic visualization without requiring complex multi-plane architectures. The optical element mediates the light paths to achieve the desired visual effect with simplified structure.
2Object-affected harmful factors
If multiple image planes are used to solve vergence-accommodation conflict, then visual comfort is improved, but device weight increases
Solution Approach 1:
The patent merges multiple display functions into a compact integrated system where the first, second, and third displays work together in close proximity. By combining these elements into a unified optical assembly rather than separate weighted components, the system achieves multi-layer display effects with reduced overall weight.
Solution Approach 2:
The patent employs a nested arrangement where the third display (optical element) is positioned to reflect images from the first and second displays. The displays are arranged in a space-efficient configuration where components are nested or closely integrated, minimizing the overall volume and weight of the head-mounted device while maintaining the multi-plane display functionality.
3Object-affected harmful factors
If multiple image planes are used to solve vergence-accommodation conflict, then visual comfort is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple display technologies into a single integrated module that can be manufactured as one unit. By merging the first display, second display, and third display into a unified assembly with shared optical paths and structural support, the system reduces manufacturing complexity and cost compared to assembling separate multi-plane display systems.
Solution Approach 2:
The third display serves multiple functions: it acts as a beam splitter, a reflector, and an optical element that directs light to both eyes. This multi-functionality reduces the need for separate components, simplifying the manufacturing process and reducing overall system cost while maintaining the advanced visual comfort features.
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 effectively reduces user dizziness and improves comfort during long-term use by minimizing vergence-accommodation conflict while maintaining a lightweight and cost-effective design.
Implementation Method 1
The optical element transmits the first image to the first target area, transmits the second image to the second target area
Implementation Method 2
The optical element reflects the third image toward the first target area and the second target area
Data Source
AI summary
A head mounted display including a first display, a second display, a third display, and an optical element is provided. The first display projects a first image to a first target area. The second display projects a second image to a second target area. The third display projects a third image. The optical element is disposed among the first target area, the second target area, the first display, the second display, and the third display. The optical element transmits the first image to the first target area and the second image to the second target area, and reflects the third image toward the first target area and the second target area.