Autostereoscopic Display Screen with Buffer Points-of-View
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Solution Overview
Problem
Current autostereoscopic screens face limitations in depth and burst capabilities, leading to reduced resolving power and image quality, especially when objects are far from the screen, due to physiological, technological, and image processing constraints.
Innovation Solution
An autostereoscopic display screen with a matrix of pixels and an optical array of cylindrical lenticules or a parallax barrier, configured to display multiple points-of-view, where each point-of-view is framed by buffer points-of-view, allowing for almost perfect resolving power and reduced interference between images seen by each eye.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If current autostereoscopic screens are used to display deep volumes, then the depth perception is improved, but the resolving power and image quality deteriorate due to physiological and technological constraints
Solution Approach 1:
The screen displays multiple points-of-view (P≥6) segmented into distinct buffer zones, where each buffer point-of-view is separated from adjacent points-of-view by at least 2 buffer zones. This segmentation prevents interference between different viewpoint images while maintaining deep volume perception, thereby preserving resolving power even when displaying objects far from the screen.
2Adaptability or versatility
If the number of points-of-view is increased to expand the viewing cube, then the depth and burst range is improved, but the interference between images seen by each eye increases, reducing image quality
Solution Approach 1:
Buffer points-of-view act as intermediary zones between adjacent viewpoint images. Each buffer zone displays content that is identical to at least one adjacent point-of-view, creating a transition region that prevents direct interference between different viewpoint images while allowing the viewing cube depth to be expanded to I times the average inter-pupillary distance.
3Volume of moving object
If objects are displayed far from the screen plane, then the depth perception is improved, but the sharpness and image quality are lost due to technological constraints
Solution Approach 1:
The screen pre-configures multiple points-of-view with buffer zones before the observer views the image. By displaying P points-of-view (P≥6) with at least 2 buffer zones separating each point-of-view, the system prepares the optical path in advance to maintain sharpness for objects at various depths, including objects several meters behind the screen, without requiring real-time adjustment.
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 enables the perception of deep volumes up to half the distance in front of and several meters behind the screen without loss of sharpness, improving relief performance and reducing ghosting effects, while maintaining optimal image quality.
Implementation Method 1
a lens placed at the right distance (its focal length) magnifies the sub-pixel which is in alignment with its optical center and the pupil of the eye of the observer
Implementation Method 2
an autostereoscopic image consists of a plurality of nested elementary images, each corresponding to views of the same object or of the same scene according to different points-of-view
Data Source
AI summary
A display screen with P screen points-of-view, P being an integer greater than or equal to 6, displays an autostereoscopic image at I image points-of-view, I being an integer greater than or equal to 2, less than or equal to P/3. The screen includes a matrix (10) of pixels arranged by rows and by columns; an optical array configured so that the P points-of-view of the screen can be perceived successively in lobes, each covering I times the average inter-pupillary distance of an observer (8), so that the screen points-of-view of each pair of points-of-view visible to the observer are separated by at least T buffer points-of-view, T being greater than or equal to 2, so that it is possible to display successively for each lobe, each of the I image points-of-view, each repeated P/I times, and that each point-of-view visible to the observer can be surrounded by at least 2 buffer points-of-view each displaying this same image point-of-view.