Lenticular Display Vertical Parallax Correction
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Solution Overview
Problem
Existing electronic devices with displays struggle to provide accurate three-dimensional imagery due to vertical parallax mismatch, especially when viewers move vertically relative to the display.
Innovation Solution
The electronic device incorporates a lenticular display with a lenticular lens film and an eye and/or head tracking system. This setup allows for independently controllable viewing zones, with images adjusted based on the vertical position of the viewer to compensate for vertical parallax. Additionally, the display can dim, blur, or composite images to maintain a consistent three-dimensional perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lenticular lenses are used to enable stereoscopic viewing, then three-dimensional images are provided to the viewer, but vertical parallax mismatch occurs when the viewer moves vertically relative to the display
Solution Approach 1:
The patent applies dynamics by making the display settings adjustable in real-time based on viewer position. The system dynamically modifies image content and display parameters (brightness, contrast, color) according to the vertical position detected by the eye tracking system, allowing the display to adapt to vertical movements and maintain consistent three-dimensional perception across different viewing angles.
Solution Approach 2:
The patent implements feedback through the eye tracking system that continuously monitors the vertical position of the viewer's eyes and provides real-time information to the display system. This feedback loop enables the display to automatically adjust image rendering parameters based on the detected vertical eye position, correcting parallax mismatches as they occur.
2Reliability
If the display is dimmed globally to compensate for vertical parallax, then the three-dimensional perception is maintained, but the overall brightness and visibility of the display decreases
Solution Approach 1:
The patent applies local quality by selectively adjusting display parameters for different regions or aspects of the image based on the viewer's vertical position. Instead of uniformly dimming the entire display, the system makes localized adjustments to image content and display settings in specific viewing zones, maintaining appropriate brightness levels while compensating for vertical parallax effects in the relevant areas.
Solution Approach 2:
The patent implements parameter changes by modifying multiple display parameters (brightness, contrast, color, sharpness) independently based on the vertical eye position. The system changes these parameters dynamically to optimize the three-dimensional perception while maintaining acceptable brightness levels, rather than applying a uniform brightness reduction.
3Adaptability or versatility
If multiple two-dimensional images are rendered for different viewing zones, then horizontal parallax is accounted for, but vertical parallax artifacts become more visible
Solution Approach 1:
The patent applies dynamics by making the image rendering process adaptive to both horizontal and vertical viewer positions. The system dynamically adjusts the rendering of multiple two-dimensional images for different viewing zones while simultaneously accounting for vertical parallax through real-time parameter modifications based on eye tracking data, eliminating the visibility of vertical parallax artifacts.
Solution Approach 2:
The patent uses the eye tracking system as an intermediary that provides vertical position information to the image rendering process. This intermediary feedback mechanism enables the system to reconcile the conflict between rendering multiple horizontal viewing zones and maintaining vertical parallax consistency by adjusting rendering parameters based on the detected vertical eye position.
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 mitigates vertical parallax mismatch, providing a seamless three-dimensional viewing experience even as viewers move vertically. This is achieved through real-time adjustments of image content and display settings based on the viewer's position.
Implementation Method 1
The lenticular lens film may include lenticular lenses that spread light in the horizontal direction but not the vertical direction
Implementation Method 2
The eye and/or head tracking system uses sensors to obtain sensor data regarding the position of a viewer of the display
Data Source
AI summary
An electronic device may include a stereoscopic display with a plurality of lenticular lenses that extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display such that a viewer perceives three-dimensional images. The display may have different viewing zones that account for horizontal parallax as a viewer moves horizontally relative to the display. The display may be dimmed globally, blurred, and/or composited with a default image based on the detected vertical position of the viewer. The display may render content that compensates for the real-time vertical positions of multiple viewers.