VR Helmet Lens Distance Adjusting Module for Diopter Adaptation
Solution Overview
Problem
Existing VR helmets with fixed lens distances and non-adjustable focal lengths cause unclear image viewing for users with different eyesight, leading to discomfort and reduced immersion during VR experiences.
Innovation Solution
A VR helmet with an optical lens group and a lens distance adjusting module that automatically adjusts the distance of at least one optical lens relative to the display screen along the optical axis to adapt to the user's diopter, ensuring clear viewing for users with varying eyesight without the need for glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the focal length of the lens is fixed, then the structure is simple and easy to manufacture, but users with different eyesight cannot view images clearly
Solution Approach 1:
The patent implements a dynamic lens system where the focal length can be adjusted based on user needs. The lens group includes multiple lenses with different focal lengths, and a control mechanism allows switching between them or adjusting the effective focal length, transforming a static optical system into a dynamic one that adapts to different users' eyesight requirements.
Solution Approach 2:
The patent changes the optical parameters of the lens system by providing multiple lenses with different focal lengths (e.g., first lens group with focal length f1, second lens group with focal length f2). The system can switch between these different parameter configurations or combine them to achieve continuous focal length adjustment, allowing adaptation to various diopter requirements without increasing overall structural complexity.
2Manufacturing precision
If the lens distance is fixed, then the manufacturing process is simple, but image clarity cannot be adapted to different diopters
Solution Approach 1:
The patent divides the lens system into multiple independent lens groups (first lens group and second lens group) that can be manufactured separately with standard precision requirements. Each lens group has specific focal length characteristics, and they are assembled together in a modular fashion. This segmentation allows each component to be manufactured independently using conventional processes, while the combination achieves the desired precision for different diopter adaptations.
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 allows users with different eyesight to view images clearly, enhancing the VR experience by automatically adjusting the focal length to match the user's diopter, thereby improving comfort and immersion.
Implementation Method 1
an optical lens group including lenses that comprise at least two optical lenses arranged along a direction of an optical axis of the lenses
Data Source
AI summary
The present disclosure relates to a virtual reality helmet and a control method. The virtual reality helmet includes an optical lens group including lenses that include at least two optical lenses arranged along a direction of an optical axis of the lenses; and a lens distance adjusting module configured to automatically adjust a distance of at least one of the lenses relative to a display screen along the direction of the optical axis of the lenses so that a focal length of the optical lens group is adapted to the diopter of a helmet wearer.