Refractive Lens for 3D Displays with Universal Pixel Pitch Adaptation
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Solution Overview
Problem
Current lenticular grating structures for 3D displays face compatibility issues with display devices of different pixel resolutions, requiring distinct lens pitches that increase production costs and complexity.
Innovation Solution
A refractive lens system with adjustable lens units, each driven by the same voltage, is designed to accommodate display panels with varying pixel unit pitches by calculating the number of driving voltage terminals and dividing the refractive lens into sub-units that correspond to common multiples of the pixel pitches, allowing adaptation to different resolutions without the need for multiple lens designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lenticular grating structures use fixed pitch designs based on specific pixel resolutions, then 3D display effect is achieved for that resolution, but compatibility with display devices of different resolutions is lost
Solution Approach 1:
The patent applies universality by designing a single lenticular grating structure that can serve multiple display resolutions. The lens pitch is calculated as a common multiple of different pixel pitches (e.g., 1.8 times the pixel pitch for 1080P, 2.4 times for 720P), allowing the same physical lens structure to work across different resolutions without requiring separate lens designs for each resolution.
Solution Approach 2:
The patent employs parameter changes by adjusting the lens pitch parameter based on the target resolution. The lens pitch is defined as a variable that scales with pixel pitch (1.8× or 2.4×), enabling the system to adapt to different resolutions by changing this key parameter rather than redesigning the entire lens structure.
2Adaptability or versatility
If multiple lens pitch designs are created to support different resolutions, then compatibility improves, but production costs and manufacturing complexity increase
Solution Approach 1:
The patent eliminates the need for multiple lens designs by creating a universal lens pitch specification. Manufacturers can produce a single type of lenticular grating with a standardized pitch relationship (1.8× or 2.4× pixel pitch) that works across multiple resolutions, significantly reducing production costs and manufacturing complexity compared to producing separate lenses for each resolution.
3Adaptability or versatility
If lens units are divided and driven by different voltages, then adaptation to different resolutions is achieved, but device complexity and control difficulty increase
Solution Approach 1:
The patent applies dynamics by making the lens units adjustable through voltage control. Each lens unit can be independently driven by applying different voltages to change its focal length and pitch, allowing the same physical lens structure to dynamically adapt to different resolutions. This dynamic adjustment capability eliminates the need for multiple static lens designs.
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 the same refractive lens to be used across display panels with different resolutions, reducing production costs and complexity while maintaining effective 3D display capabilities, by adjusting the lens unit length and driving voltage cycles to match the specific pixel pitches of each panel.
Implementation Method 1
Lenticular grating structure may be implemented through liquid crystals that refract lights passing through liquid crystals
Implementation Method 2
Liquid crystals rotate to certain angles according to the input voltages applied to the liquid crystals such that light transmittance of liquid crystals is controlled
Data Source
AI summary
A refractive lens for displaying three-dimensional images (3D) comprises a first substrate, a second substrate, and a refractive layer configured between the first substrate and the second substrate and configured as a plurality of lens units of the refractive lens. The refractive lens is capable of being coupled to a first display panel having a pixel unit pitch A and a second display panel having a pixel unit pitch B to display the 3D images, the pixel unit pitch A being different from the pixel unit pitch B. Each lens unit of the refractive lens has an equal length p, and p is a common multiple of 2*A and 2*B. Each lens unit of the refractive lens is driven by a same driving voltage.