Lenticular Lens Alignment via Interference Pattern Adjustment
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Solution Overview
Problem
The alignment error between lenticular lenses and a user device in glass-free stereoscopic image displays, caused by manufacturing and user attachment errors, results in a blurred or unsatisfactory 3D image experience.
Innovation Solution
An angle adjustable user interface is provided on the user device, displaying interference pattern lines and a reference line, allowing users to adjust the slant angle of the pixel line to match the lens line, thereby minimizing alignment errors and ensuring a clear stereoscopic image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If lenticular lenses are manufactured and attached to the user device, then glass-free stereoscopic image display is enabled, but alignment error occurs between the lenticular lenses and pixel array resulting in blurred image
Solution Approach 1:
The patent applies preliminary action by pre-defining reference lines and interference pattern lines on the display panel before the lenticular lenses are attached. These pre-defined patterns serve as alignment guides that allow users to detect and correct misalignment during the attachment process, thereby preventing alignment errors before they affect the final image quality.
Solution Approach 2:
The patent implements feedback by displaying interference patterns that result from the interaction between the pixel array and the lenticular lenses. When misalignment occurs, the interference patterns provide visual feedback to the user, enabling them to adjust the lens position until the patterns align correctly, thus achieving precise alignment through iterative correction.
2Ease of operation
If lenticular lenses are attached by users themselves, then ease of operation is improved, but alignment error increases due to user attachment inaccuracies
Solution Approach 1:
The patent applies self-service by enabling users to perform the alignment adjustment themselves through the displayed interference patterns. The visual feedback from the interference patterns allows users to autonomously detect and correct their own attachment errors without requiring specialized equipment or expertise, making the system self-correcting.
Solution Approach 2:
The patent utilizes visual pattern changes (analogous to color changes principle) by displaying interference patterns that change appearance based on alignment quality. The patterns provide visual cues that help users identify misalignment and make appropriate adjustments, transforming an invisible alignment problem into a visible one that users can address.
3Manufacturing precision
If alignment error of 0.05 degrees or more occurs, then manufacturing tolerance is satisfied, but stereoscopic image quality deteriorates becoming difficult to view vividly
Solution Approach 1:
The patent replaces the mechanical alignment system with an optical feedback system. Instead of relying solely on precise mechanical attachment, the system uses optical interference patterns to detect and indicate alignment errors, allowing for post-attachment correction and ensuring image quality even when mechanical tolerances are exceeded.
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
This solution enables users to intuitively identify and correct misalignment errors, ensuring a vivid and clear glass-free stereoscopic image by allowing precise adjustment of the pixel line angle relative to the lens line, even when manufacturing or user attachment errors occur.
Implementation Method 1
lenticular lenses scheme in which a lenticular lens sheet on which cylindrical lenses are vertically arranged is installed in front of a display panel
Implementation Method 2
the interference pattern line is formed by the lens line and the pixel line
Data Source
AI summary
A method of reducing an alignment error between a user device and lenticular lenses to view a glass-free stereoscopic image includes: (a) providing an angle adjustable user interface configured to display at least one interference pattern line and a reference line in a display area of the user device where the lenticular lenses attach; (b) receiving a user input to adjust a slant angle of the interference pattern line to the reference line; and (c) displaying the interference pattern line with an changed slant angle in response to the user input and defining a slant angle of the pixel line according to the changed interference pattern line. The pixel line is configured to include multiple lines represented by multiple pixels that constitute the display area of the user device and has a specific slant. The lens line refers to a pattern of multiple lines formed by multiple convex lenses that constitute the lenticular lenses and the interference pattern line is formed by the lens line and the pixel line.