Autostereoscopic Display Eye Tracking for Full-Resolution 3D Viewing
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Solution Overview
Problem
Conventional stereoscopic and autostereoscopic systems provide limited resolution and require viewers to wear special glasses, restricting freedom of movement and failing to adapt perspective according to viewer position.
Innovation Solution
A display system that tracks viewer positions and adjusts lighting of parallel light strips through a lenticular panel to direct left and right image components to the appropriate eyes, allowing stereoscopic viewing without glasses and enabling perspective adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional stereoscopic systems use polarization technology or shutter glasses to separate left and right images, then stereoscopic viewing is achieved, but viewers must wear special glasses that restrict freedom of movement and do not adapt to viewer position changes
Solution Approach 1:
The patent replaces the mechanical/optical filtering system (glasses with polarizing filters or shutters) with an electronic control system that uses a light source array and liquid crystal display to dynamically direct light to different eye positions. This substitution eliminates the need for physical glasses while maintaining stereoscopic separation through electronic timing and spatial light control.
Solution Approach 2:
The system dynamically adjusts which light strips are activated based on the real-time position of the viewer's eyes. The controller receives eye position data from the eye tracker and selectively activates corresponding light strips to direct left and right images to the appropriate eyes, allowing continuous adaptation as the viewer moves without requiring glasses.
2Ease of operation
If autostereoscopic displays use head tracking or eye tracking systems to deflect images to each eye, then stereoscopic viewing without glasses is achieved, but the available resolution is reduced to half or less
Solution Approach 1:
The display system segments the light source into multiple independent controllable strips positioned behind different regions of the screen. Each light strip can be independently activated to illuminate specific portions of the display for left or right eye viewing, allowing the full screen resolution to be utilized while maintaining stereoscopic separation without requiring mechanical deflection or reducing pixel count.
Solution Approach 2:
The patent introduces an intermediary light source array positioned behind the screen, controlled by liquid crystal elements that selectively transmit or block light from specific strips. This intermediary system enables full-resolution stereoscopic display by controlling light paths after the image is fully rendered on the screen, rather than attempting to deflect images before they reach the viewer.
3Adaptability or versatility
If conventional systems use mechanical lenticular displacement or controllable barriers to steer images to each eye, then stereoscopic separation is achieved, but complex electro-optical arrangements are required and the barrier strip size is much smaller than pixel size
Solution Approach 1:
The patent replaces mechanical lenticular displacement systems and physical controllable barriers with an electronically controlled light source array. Instead of mechanically moving lenses or adjusting physical barrier positions, the system uses electronic control of light emission from discrete strips behind the screen, simplifying the electro-optical arrangement while achieving the same stereoscopic separation function.
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
Enables high-resolution stereoscopic viewing with viewer freedom and adaptive perspective, eliminating the need for special glasses and maintaining 3D perception regardless of position.
Implementation Method 1
a lenticular panel having a plurality of parallel lenses, each given lens of the lenticular panel being configured to direct light from a given light strip of the light source toward the screen in a direction determined by relative positions of the given light strip and of the given lens
Data Source
AI summary
A method for showing a stereoscopic image, a method for showing stereoscopic images a plurality of viewers, a method for concurrently showing different images to at least two viewers, and a method for concurrently showing a monoscopic image and a stereoscopic image. One method includes tracking positions of left and right eyes of a viewer; in a first timeslot of a repeating succession of timeslots, showing a left component of the stereoscopic image on a screen, and using a light source to illuminate the screen with a first group of light strips directed toward the left eye of the viewer; and in a second timeslot of the repeating succession of timeslots, showing a right component of the stereoscopic image on the screen, and using the light source to illuminate the screen with a second group of light strips directed toward the right eye of the viewer.