Autostereoscopic Display Aperture Alignment for Glasses-Free 3D
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Solution Overview
Problem
Current methods for presenting three-dimensional video content require viewers to wear instruments like glasses or goggles, which can be uncomfortable and inconvenient.
Innovation Solution
A system using a display with a processor and an aperture arrangement that aligns specific subsets of pixels with a viewer's eyes, allowing each eye to perceive separate images without the need for viewing instruments, by executing configuration scan procedures to determine the optimal pixel subsets for each eye.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If viewing instruments like glasses or goggles are used to present three-dimensional video content, then depth perception and stereoscopic imaging are achieved, but viewer comfort and convenience deteriorate
Solution Approach 1:
The patent extracts and removes the viewing instruments (glasses, goggles, headsets) from the system, transitioning from instrument-based stereoscopic viewing to instrument-free viewing. The aperture arrangement is positioned in front of the display to enable direct viewing without external devices, thereby improving viewer comfort while maintaining depth perception through geometric optics
Solution Approach 2:
The aperture arrangement serves as an intermediary element between the display and the viewer's eyes. This mediator selectively directs light from specific pixel subsets to each eye, enabling stereoscopic imaging without requiring the viewer to wear instruments. The aperture arrangement mediates the optical path to achieve depth perception through geometric arrangement rather than optical filtering
2Measurement precision
If viewing instruments are required for three-dimensional video, then separate images can be presented to each eye, but device complexity and accessibility worsen
Solution Approach 1:
The patent removes the complex viewing instruments from the system and replaces them with a simple aperture arrangement positioned in front of the display. This extraction eliminates the need for glasses, goggles, or headsets while maintaining the ability to present separate images to each eye through geometric optics and selective pixel activation
Solution Approach 2:
The system achieves universal compatibility by eliminating the need for specialized viewing instruments. The aperture arrangement works with standard displays and can serve multiple viewers simultaneously from different positions, making the three-dimensional video system accessible to anyone without requiring them to own or wear special equipment
3Ease of operation
If aperture arrangement is used to enable instrument-free viewing, then viewer comfort improves, but manufacturing precision requirements worsen
Solution Approach 1:
The patent implements preliminary configuration procedures that execute before normal viewing to automatically determine and store the optimal mapping between pixel subsets and viewer eye positions. This preliminary action includes scanning procedures that identify which pixels are visible through apertures from specific viewing positions, storing this information for subsequent use without requiring manual calibration or high manufacturing precision
Solution Approach 2:
The system performs self-calibration through automated configuration procedures that detect viewer position and eye alignment independently. The processor executes scan procedures to identify visible pixels and automatically establishes the correct pixel-to-eye mapping, eliminating the need for manual adjustment or extremely precise manufacturing tolerances
4Measurement precision
If configuration scan procedures are executed to determine pixel subsets, then viewing accuracy improves, but setup time increases
Solution Approach 1:
The patent executes configuration scan procedures as preliminary actions during initial setup or when viewing conditions change. These procedures systematically determine which pixels are visible through apertures from specific eye positions and store this mapping information. Once configured, the system uses this stored information for rapid viewing without requiring repeated calibration, minimizing time loss while ensuring accurate pixel-eye alignment
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 the presentation of three-dimensional video content without the need for additional viewing instruments, providing a comfortable and convenient experience for viewers while maintaining high resolution and tolerance for lateral adjustments.
Implementation Method 1
When the two separate images are received simultaneously, the viewer perceives a three-dimensional image by fusing the images received by the left and right eyes and using parallax to achieve depth perception
Implementation Method 2
an aperture arrangement disposed proximate the display... determine a first subset of the plurality of pixels that are aligned with the first eye through the aperture arrangement
Data Source
AI summary
Autostereoscopic display method using a front parallax barrier, enabling a manual adjustment of the position of the left and right images on the display, by performing for each eye, one after the other, the following steps: (a) executing a configuration scan procedure by sequentially activating combinations of plurality of pixels of the display, (b) instructing the viewer to view the display with only the eye of interest during execution of the configuration scan procedure and to provide a confirmation when the display appears brightest, (c) receiving said confirmation from the viewer during execution of the configuration scan procedure, and (d) determining a subset of pixels associated to said eye of interest based on a state of the display during the execution of said configuration scan procedure when the confirmation is received.