Sensor-Guided VR IPD Adjustment with Slidable Optical Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional VR glasses require manual adjustment of interpupillary distance (IPD) using aesthetically unpleasing buttons, which complicates assembly and often fails to match users' IPDs accurately.
Innovation Solution
A device with a base, slidably mounted optical modules, a pupil position acquisition assembly, transmission assembly, and IPD adjustment driving circuit, automatically adjusts IPD by computing pupil positions and sizes to drive optical modules closer or farther apart.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual adjustment buttons are added to VR glasses for IPD adjustment, then IPD adjustability is improved, but appearance aesthetics and assembly simplicity deteriorate
Solution Approach 1:
The patent extracts the IPD adjustment function from the external appearance by integrating it into the temple arm structure. The adjustment mechanism is hidden within the temple arm, eliminating the need for external buttons or knobs that would compromise appearance aesthetics.
Solution Approach 2:
The patent implements automatic IPD adjustment through sensors that detect pupil distance and automatically position the optical modules accordingly. This self-service mechanism eliminates manual adjustment buttons entirely, maintaining clean appearance while providing continuous adaptability.
2Adaptability or versatility
If manual adjustment buttons are added to VR glasses for IPD adjustment, then IPD adjustability is improved, but assembly complexity increases
Solution Approach 1:
The patent merges the IPD adjustment mechanism with the existing temple arm structure. The adjustment components are integrated into the temple arm rather than being added as separate external assemblies, thereby reducing overall assembly complexity.
Solution Approach 2:
The automatic adjustment mechanism using sensors and motorized components integrates adjustment functionality into the existing device structure. This self-service approach eliminates the need for separate manual adjustment mechanisms, reducing assembly steps and complexity.
3Device complexity
If only three fixed IPD settings are provided, then device simplicity is maintained, but accuracy of IPD matching deteriorates
Solution Approach 1:
The patent transitions from static fixed IPD settings to dynamic continuous adjustment. The optical modules can be positioned at any distance within a range, enabling precise matching to each user's specific IPD while maintaining relatively simple device architecture through automated control.
Solution Approach 2:
The patent incorporates sensors that detect pupil position and provide feedback to the control system. This feedback mechanism enables automatic adjustment to the precise IPD value, achieving high measurement precision without requiring complex manual adjustment mechanisms.
4Measurement precision
If automatic IPD adjustment is implemented, then IPD matching accuracy is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with sensor-based detection and automated control systems. This substitution achieves high IPD matching accuracy through electronic sensing and control rather than complex mechanical linkages and adjustments.
Solution Approach 2:
The automatic adjustment system performs IPD measurement and adjustment autonomously without requiring manual intervention. The sensor detects pupil distance and the system automatically positions the optical modules, achieving high precision while keeping the user interface simple.
Data Source
AI summary
Provided a device and method for automatically adjusting an interpupillary distance (IPD) capable of achieving a desirable automatic VR IPD adjustment effect. The device includes a base, first and second optical modules, a pupil position acquisition assembly, a transmission assembly, an IPD adjustment driving circuit, and a processor. Two ends of the transmission assembly are respectively rotatably connected to a side of the first optical module adjacent to the base and a side of the second optical module adjacent to the base. The processor is electrically connected to the IPD adjustment driving circuit and the pupil position acquisition assembly. The adjustment driving circuit receives IPD position information, and causes the transmission assembly to drive the first optical module and the second optical module to move close to or away from each other to adjust a distance between the first optical module and the second optical module.