Autostereoscopic Display Using Discontinuous Viewing Indices
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Solution Overview
Problem
Multi-view 3D display technologies face issues with pseudoscopic illusions and crosstalk when users move between viewing cones, leading to a loss of 3D effect and recognition of two separate 2D images due to significant disparity differences between view images.
Innovation Solution
A display apparatus with a panel unit and an optical unit that directs light from pixels to provide discontinuous viewing indices to the left and right eyes, using a lenticular lens array and adjusting depth disparities to minimize viewing index differences and enhance the 3D effect, while the optical unit's refractive index, radius of curvature, pitch, and lens array interval are configured differently from standard designs to achieve autostereoscopic images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If view images with continuous viewing indices are used to provide 3D effect, then the 3D effect is strong, but pseudoscopic illusions and crosstalk occur when users move between viewing cones
Solution Approach 1:
The patent inverts the conventional approach by using discontinuous viewing indices instead of continuous ones. Specifically, it directs view images with viewing indices that skip certain values (e.g., indices 0, 2, 4, 6 for left eye and 1, 3, 5, 7 for right eye) to eliminate pseudoscopic illusions that occur when users move between viewing cones, while still maintaining strong 3D effect through adjusted depth disparities
2Object-affected harmful factors
If discontinuous viewing indices are used to reduce pseudoscopic illusions, then visual fatigue is reduced, but depth disparity adjustment is required to maintain 3D effect
Solution Approach 1:
The patent changes the viewing index parameters from continuous to discontinuous sequences, and simultaneously adjusts the depth disparity parameter of view images. This dual parameter adjustment allows the system to reduce visual fatigue by eliminating pseudoscopic illusions while maintaining the 3D effect through compensated depth disparities
3Ease of manufacture
If optical unit is designed for continuous viewing indices, then standard design specifications apply, but it cannot effectively handle discontinuous viewing indices for reduced pseudoscopic effect
Solution Approach 1:
The patent modifies the optical unit's parameters including refractive index, radius of curvature, pitch, and lens array interval to specifically accommodate discontinuous viewing indices. These parameter changes enable the optical unit to direct light from pixels with discontinuous viewing indices to the correct eye positions, eliminating pseudoscopic illusions while maintaining manufacturability through defined specification adjustments
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
The solution effectively reduces visual fatigue and maintains a strong 3D effect by minimizing pseudoscopic illusions and crosstalk, allowing users to observe autostereoscopic images with reduced viewing index differences, even when moving between viewing cones.
Implementation Method 1
an optical unit to direct light from pixels, of the plurality of pixels, providing light for view images, of the multi-view image, having discontinuous viewing indices to a left eye position and a right eye position of a user, respectively
Implementation Method 2
The optical unit may include a lenticular lens array to perform the directing of the light from the pixels
Data Source
AI summary
A display apparatus providing a multi-view image is provided, which may include a panel unit to provide light through a plurality of pixels corresponding respectively to a plurality of viewpoints, and an optical unit to provide the light to a left eye position and a right eye position at a pre-designated viewing distance, respectively, wherein the optical unit may be configured for light from pixels for view images having discontinuous viewing indices, among the plurality of pixels, to be transferred to the left eye position and the right eye position.