Head-Mounted Display Eye Shift Correction
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Solution Overview
Problem
Existing head-mounted display devices for augmented reality do not adequately account for individual differences in human eyes, leading to visual discomfort due to misalignment of real and virtual objects within the user's visual field.
Innovation Solution
A head-mounted display device equipped with an image display unit, a detecting unit to calculate the gazing point coordinate, and an augmented-reality processing unit that adjusts the position of virtual objects based on detected shifts between standard and gazing point coordinates, taking into account individual eye differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the position of virtual objects is aligned using standard parallax for left and right eyes, then the augmented reality function is implemented, but visual discomfort occurs due to misalignment caused by individual differences in eye positions and structures
Solution Approach 1:
The patent changes the parameters of virtual object positioning by introducing individualized correction values based on each user's actual eye positions and structures. Instead of using fixed standard parallax values, the system adjusts the positional parameters of virtual objects according to measured individual differences in eye coordinates, thereby resolving the misalignment issue that causes visual discomfort.
2Ease of operation
If individual eye differences are taken into account to improve alignment, then visual comfort is enhanced, but the system complexity increases due to additional detection and calculation requirements
Solution Approach 1:
The patent implements a feedback mechanism where the system detects the user's actual eye positions and structures, calculates individual correction values, and uses these corrections to adjust virtual object positioning. This closed-loop feedback process enables the system to adapt to individual users' anatomical variations, improving visual comfort while managing complexity through automated detection and calculation algorithms.
Data Source
AI summary
A head-mounted display device with which a user can visually recognize a virtual image and an outside scene includes an image display unit configured to cause the user to visually recognize the virtual image, a detecting unit configured to cause the image display unit to form the virtual image for causing the user to visually recognize a mark on any standard coordinate on a three-dimensional space, calculate a gazing point coordinate on the three-dimensional space representing a gazing point of the user gazing at the mark, and detect a shift between the standard coordinate and the gazing point coordinate, and an augmented-reality processing unit configured to cause the image display unit to form the virtual image including a virtual object to be displayed with respect to a real object actually present in a real world, the virtual object being arranged using the detected shift.