Display Switching Device Lens Array Curvature Optimization
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Solution Overview
Problem
Existing display switching devices suffer from image quality degradation due to image crosstalk, where incorrect patterns appear when switching between triangle and circle pixel regions, caused by aberration and inappropriate focusing of light through lenticular lenses.
Innovation Solution
A display switching device with a lens array featuring microlenses or aspheric lenses, where the curvature radii and focal lengths are optimized to align focal points correctly, reducing aberration and crosstalk by having greater averages of curvature radii at greater distances from a reference position, and using aspheric lenses with line-symmetric curved surfaces to minimize image quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a lenticular lens or lens array is used to focus light from multiple light sources onto pixel regions, then display switching between patterns is enabled, but image crosstalk occurs due to aberration and inappropriate focusing
Solution Approach 1:
The patent applies local quality by varying the curvature radii of microlenses based on their position in the lens array. Specifically, microlenses farther from the light source have larger curvature radii, while those closer have smaller curvature radii. This local differentiation optimizes the focal length for each microlens according to its position, ensuring that light from all light sources focuses appropriately on the display surface without causing image crosstalk, thereby resolving the contradiction between display switching capability and image quality.
2Manufacturing precision
If the curvature radii of microlenses are increased at greater distances from the light source, then aberration and crosstalk are reduced, but the lens array structure becomes more complex
Solution Approach 1:
The patent implements parameter changes by systematically varying the curvature radii of microlenses as a function of their position in the lens array. The curvature radius is changed according to the distance from the light source, creating a gradient structure that optimizes optical performance. This parameter variation reduces aberration and image crosstalk while maintaining a regular, manufacturable lens array structure, thus resolving the contradiction between image quality and device complexity.
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 effectively reduces image quality degradation by aligning focal points and minimizing crosstalk, allowing for clear switching between patterns without degrading image quality.
Implementation Method 1
a lens array including a plurality of lenses, and a display unit including a plurality of pixel regions. The plurality of pixel regions allow passage of light emitted from the plurality of light sources and focused by the plurality of lenses included in the lens array
Data Source
AI summary
A lens array included in a display switching device according to one or more embodiments may include a portion having a greater average of curvature radii of microlenses at a greater distance from a predetermined lens reference position on a surface of the lens array including the microlenses.