Stereoscopic Display Parallax Controller for User IPD Calibration
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Solution Overview
Problem
Current stereoscopic 3D displays lack user adjustability and standardization across multiple platforms, leading to varying levels of comfort, usability, and proficiency among different operators, with existing adjustments being time-consuming and unrepeatable.
Innovation Solution
A stereoscopic display system comprising a left-eye and right-eye perspective image data source, a stereoscopic display, and a parallax controller that allows for simultaneous display of images from both perspectives at a user-adjustable separation distance, enabling individualized calibration for each user's preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical or subjective adjustments are used to allow users to adjust the display, then the display can be customized to look good to the user, but the adjustments become unrepeatable and time-consuming
Solution Approach 1:
The system performs preliminary measurement of the user's interpupillary distance (IPD) and automatically configures the display parameters before the user needs to view the content. The parallax controller measures the actual IPD and pre-calculates the appropriate separation distance, eliminating the need for manual adjustment during use.
Solution Approach 2:
The display system serves itself by automatically measuring the user's IPD and adjusting the display parameters without requiring manual intervention. The parallax controller autonomously configures the separation distance based on measured IPD, making the system self-calibrating and eliminating time-consuming manual adjustments.
2Adaptability or versatility
If a fixed display configuration is used, then the system is simple to operate, but it cannot accommodate different users with different interpupillary distances
Solution Approach 1:
The display system transitions from a fixed configuration to a dynamic one where the separation distance can be automatically adjusted based on the user's IPD. The parallax controller dynamically modifies display parameters in real-time based on measured user characteristics, enabling adaptation to different users without increasing operational complexity.
Solution Approach 2:
The system changes the separation distance parameter automatically based on the measured interpupillary distance. By dynamically adjusting this key parameter, the system accommodates different users while maintaining a simple fixed hardware structure, resolving the contradiction between adaptability and complexity.
3Reliability
If subjective adjustments are allowed, then each user can customize the display, but the adjustments cannot be consistently repeated across different platforms
Solution Approach 1:
The system incorporates feedback by measuring the user's actual IPD and using this information to automatically adjust the display parameters. This closed-loop approach ensures consistent and repeatable adjustments across different platforms, as the same measurement and calculation process can be replicated universally.
Solution Approach 2:
The parallax controller implements a universal adjustment mechanism that works across multiple platforms. By using a standardized measurement and calculation approach for IPD-based adjustment, the system achieves cross-platform compatibility and consistent user experience without requiring platform-specific customization.
Data Source
AI summary
A display system and method for providing user adjustability of displayed three-dimensional images. The system simultaneously displays a left-eye perspective view of an image and a right-eye perspective view of the same image, at a separation distance, and allows for the selective control of the separation distance via, for example, a user interface. The system and method allows multiple users to use multiple pieces of display hardware and quickly return each piece of display hardware to a user's own individualized preferences and compatibilities. It additionally allows a user to vary the display properties, such as providing extra foreshortening or stretching along the depth axis, quickly and simply.