Virtual Reality Lens Adjustment for Vision-Adaptive Parallax
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Solution Overview
Problem
Existing virtual reality devices struggle to accommodate users with different vision needs, leading to reduced field of view and image focus issues due to unadjusted lens distance and unchanged parallax, which diminish user immersion and experience quality.
Innovation Solution
A control method that adjusts the lens distance, field of view, and spacing between virtual cameras based on user vision information, synchronizing these adjustments to optimize image clarity and parallax for improved user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens distance is fixed and parallax is unchanged, then the device structure is simple, but users with different vision needs experience reduced field of view and image focus issues
Solution Approach 1:
The patent applies the dynamics principle by making the lens distance adjustable rather than fixed. The system dynamically adjusts the lens position along the optical axis based on user vision information (such as myopia degree), enabling adaptation to different users' visual needs while maintaining a relatively simple overall structure through controlled movement rather than complete redesign
Solution Approach 2:
The patent changes the physical parameter of lens distance to accommodate different vision requirements. By varying the lens position parameter according to user vision characteristics, the system achieves adaptability without requiring complex structural modifications, resolving the contradiction between versatility and device complexity
2Reliability
If the field of view is reduced to accommodate different vision needs, then image focus is improved, but user immersion and experience quality are diminished
Solution Approach 1:
The patent adjusts multiple parameters simultaneously including lens distance, field of view angle, and virtual camera spacing to achieve both image focus clarity and maintained user immersion. By coordinating changes in these parameters rather than reducing field of view alone, the system maintains reliability of image focus while preserving adaptability for user experience
Solution Approach 2:
The system dynamically coordinates multiple parameters (lens distance, field of view, camera spacing) to achieve optimal balance between image focus and user immersion. The dynamic adjustment allows the system to adapt to different users while maintaining both focus clarity and immersion quality through coordinated parameter changes
3Reliability
If the lens distance is adjusted for each user, then image focus is improved, but the adjustment process is time-consuming and complex
Solution Approach 1:
The patent implements self-service by having the system automatically adjust lens distance and other parameters based on detected user vision information. Rather than requiring manual user input or time-consuming adjustment procedures, the system autonomously determines optimal parameters based on vision data, reducing adjustment time while maintaining focus clarity
Solution Approach 2:
The system uses feedback from vision information detection to automatically determine optimal lens distance and parameters. By incorporating user vision characteristics as feedback input, the system rapidly adjusts without time-consuming manual intervention, achieving both reliability of focus and efficiency of quick adjustment
Data Source
AI summary
Disclosed are a control method and apparatus for a virtual reality device. The method includes acquiring vision information of a current user that uses a virtual reality device; and according to the vision information of the current user, adjusting the distance between a lens in the virtual reality device and the eyes of the current user, and the distance between the field of view angle of each virtual camera and adjacent virtual cameras.