Adaptive Parallax Adjustment for VR Displays
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Solution Overview
Problem
Virtual reality display systems face challenges in accommodating users with different pupil distances, leading to inconsistent stereoscopic depth perception due to fixed lens assembly distances, which can result in a poor user experience.
Innovation Solution
An adaptive parallax adjustment method that utilizes pupil distance information obtained through eye tracking to calculate and adjust the position of images on a display screen, ensuring the lens, image, and pupil centers are in a straight line, thereby optimizing the stereoscopic effect for each user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between lens assemblies is fixed, then the device structure is simple, but users with different pupil distances cannot achieve good stereoscopic depth perception
Solution Approach 1:
The patent replaces the mechanical adjustment mechanism of lens assemblies with a software-based image processing system. The processor calculates and adjusts the position of images on the display screen based on detected pupil distance information, eliminating the need for complex mechanical adjustment mechanisms while achieving adaptability to different pupil distances.
Solution Approach 2:
The patent changes the display parameters (image position on screen) based on the detected pupil distance. By dynamically adjusting the image position parameters according to the user's specific pupil distance, the system achieves adaptability without requiring physical changes to the lens assembly structure.
2Manufacturing precision
If the lens assembly distance is adjusted for each user, then stereoscopic depth perception is optimized, but the device complexity increases
Solution Approach 1:
The patent substitutes the mechanical adjustment system with an electronic image processing system. The processor dynamically adjusts the image position on the display screen based on pupil distance detection, achieving precise stereoscopic depth perception without requiring complex mechanical adjustment mechanisms.
Solution Approach 2:
The patent creates a virtual adjustment of the optical system by adjusting the image position on the display screen to simulate the effect of physically adjusting the lens assembly distance. This virtual copying of the adjustment function eliminates the need for complex mechanical mechanisms while achieving the same optical effect.
3Adaptability or versatility
If eye tracking device is added to detect pupil distance, then adaptability to different users is improved, but device complexity increases
Solution Approach 1:
The patent integrates the eye tracking function into the existing VR display system, making the detection system serve multiple purposes: detecting pupil distance for parallax adjustment and potentially other eye-related metrics. This multi-functionality reduces the need for separate dedicated detection devices.
Solution Approach 2:
The system uses the user's own eye movements and pupil positions as the input signal for adjustment, eliminating the need for external calibration devices or complex interaction mechanisms. The user simply looks at the screen, and the system automatically detects and adjusts based on that natural behavior.
Data Source
AI summary
The present disclosure relates to a virtual reality display device and an adaptive parallax adjustment method for the virtual reality display device, which belong to the display technical field. The adaptive parallax adjustment method includes: obtaining pupil distance information of a user; and adjusting a position of a to-be-displayed image on a display screen according to the pupil distance information.