3D Display Aligning Monocular Binocular Convergence
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Solution Overview
Problem
Conventional three-dimensional imaging systems cause viewing discomfort due to inconsistency between monocular convergence and binocular convergence distances, leading to issues like dizziness, as they fail to provide light field information necessary for monocular convergence.
Innovation Solution
A three-dimensional display apparatus that includes a display panel displaying first and second sub-images in a time sequential order, focused by a main lens to different view points within the same view zone, using a back light source with first and second light sources illuminated in a corresponding sequential order, and optionally enhanced with a micro-lens array and transparent optical material layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional three-dimensional imaging systems display images for left and right eyes separately, then binocular viewing is achieved, but monocular convergence distance cannot be adjusted leading to viewing discomfort
Solution Approach 1:
The display panel is divided into multiple display sub-regions, each capable of independently displaying sub-images for different view points. This segmentation allows the system to provide multiple discrete light field information sets corresponding to different monocular convergence distances, enabling viewers to adjust monocular convergence while maintaining binocular viewing capability.
Solution Approach 2:
The system dynamically switches between different display sub-regions to present different view points sequentially. By controlling the display timing and switching between sub-regions, the system can adjust the monocular convergence distance dynamically while maintaining the binocular convergence function, thus improving viewing comfort and adaptability simultaneously.
2Loss of information
If multiple view points are provided in a single view zone, then light field information for monocular convergence is improved, but system complexity increases
Solution Approach 1:
Multiple display sub-regions are merged within a single view zone, with each sub-region contributing light field information for different view points. This merging approach provides comprehensive light field information for monocular convergence adjustment while avoiding the need for separate physical display devices for each view point, thus controlling system complexity.
Solution Approach 2:
The display panel serves multiple functions: it simultaneously provides binocular viewing capability and monocular convergence adjustment by displaying multiple view points within the same view zone. This multi-functionality reduces the need for additional specialized components, thereby limiting the increase in system complexity while improving light field information delivery.
3Adaptability or versatility
If time sequential display of sub-images is used, then multiple view points are formed, but display refresh rate requirements increase
Solution Approach 1:
The system uses periodic time sequential display of sub-images in display sub-regions to form multiple view points. By organizing the display in periodic cycles and synchronizing with the refresh rate, the system achieves multi-view point capability while managing the speed requirements through structured periodic updates rather than continuous high-speed switching.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables a near eye light field display, aligning monocular and binocular convergence distances, reducing viewing discomfort and enhancing the three-dimensional display experience by forming multiple view points within a single view zone.
Implementation Method 1
a micro-lens array between the display panel and the back light source... each individual one of the plurality of micro-lenses is configured to focus back light provided by a respective one of the plurality of first light sources to a respective one of the plurality of display sub-regions
Implementation Method 2
a main lens between the display panel and the view zone, and configured to focus each of the plurality of first sub-images to a first view point and focus each of the plurality of second sub-images to a second view point
Data Source
AI summary
The present application provides a three-dimensional display apparatus for providing a plurality of view points to a view zone. The three-dimensional display apparatus includes a display panel configured to display a plurality of first sub-images respectively in a plurality of display sub-regions and display a plurality of second sub-images respectively in the plurality of display sub-regions; a main lens configured to focus each of the plurality of first sub-images to a first view point and focus each of the plurality of second sub-images to a second view point; a plurality of first light sources configured to provide back light for the display panel to respectively display the plurality of first sub-images, and a plurality of second light sources configured to provide back light for the display panel to respectively display the plurality of second sub-images.