Automatic Pupillary Distance Adjustment for VR Headsets
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Solution Overview
Problem
VR display devices require manual pupillary distance regulation, leading to misalignment and poor visual effects, resulting in bulky and heavy devices with no effective solution.
Innovation Solution
A method and device for automatic pupillary distance regulation using a microcontroller and slide rheostat to align the central point of the screen with the lens focus and user's pupils, measuring and comparing pupillary distances to adjust the lens positions, reducing the device's volume and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual regulation of pupillary distance is used, then the device structure remains simple, but the alignment accuracy between pupil center, lens center and screen center deteriorates
Solution Approach 1:
The system automatically measures the user's pupillary distance and adjusts the lens and screen positions without manual intervention. The microcontroller autonomously controls the sliding mechanisms to align the optical components based on measured data, eliminating the need for manual regulation while achieving precise alignment.
Solution Approach 2:
The system measures the actual pupillary distance using an imaging device, compares it with the current lens-screen configuration, and automatically adjusts the positions to achieve optimal alignment. This closed-loop feedback mechanism ensures accurate alignment while reducing device complexity by removing manual adjustment mechanisms.
2Adaptability or versatility
If manual regulation mechanism is provided, then the device can be adjusted, but the device volume and weight increase
Solution Approach 1:
The patent replaces complex mechanical manual adjustment mechanisms with an automated system using microcontrollers and simple sliding structures. The system uses electronic control to adjust lens and screen positions based on measured pupillary distance, significantly reducing the mechanical complexity and weight while maintaining full adaptability for different users.
3Manufacturing precision
If manual regulation is used, then the device structure is compact, but the visual quality and image clarity deteriorate
Solution Approach 1:
The system automatically performs the alignment task that would otherwise require manual regulation, achieving precise visual quality through automated measurement and adjustment. The microcontroller-driven system eliminates human error in alignment while maintaining a relatively simple device structure through intelligent automation.
Data Source
AI summary
Disclosed are a method and device for adjusting a pupil distance of a virtual reality display device. The method adjusts a second pupil distance on a virtual reality display device by means of a first pupil distance of a user wearing the virtual reality display device, the first pupil distance referring to a pupil distance of the user wearing the virtual reality display device, and the second pupil distance being used as a distance between focal points of two lenses of the virtual reality display device; the method comprises: detecting whether the first pupil distance and the second pupil distance match; if the first pupil distance and the second pupil distance do not match, then executing a preset matching operation on the virtual reality display device. The present application solves the technical problem of a virtual reality display device being bulky and heavy.