Colored Contact Lens Gradient Density Band
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Solution Overview
Problem
Existing colored contact lenses fail to make the overall eye appear beautiful naturally, as they primarily focus on making the dark part of the eye larger and the outer edge stand out, resulting in an artificial impression.
Innovation Solution
A colored contact lens with a ring-shaped colored band that covers the boundary line between the dark and white parts of the eye, featuring a density that decreases from the inner to the outer circumference, creating a transitional area that mimics the natural density change of a youthful eye, using blue or green hues to enhance the white part's appearance and avoid sharp lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a clear, circular line is used at the outer edge of the colored area to make the dark part of the eye stand out, then the outer edge becomes clearly visible and the dark part appears larger, but the overall eye appearance becomes artificial and resembles robot eyes
Solution Approach 1:
The patent applies local quality by varying the density of colored dots across different regions of the lens. The inner circumference area has higher dot density while the outer circumference area has lower dot density, creating a gradient effect that provides local differentiation to avoid uniform artificial appearance while maintaining overall naturalness
Solution Approach 2:
The patent changes the parameter of dot density from the inner circumference to the outer circumference of the colored area. This parameter change creates a gradual transition effect that softens the outer edge definition, preventing the sharp clear line that causes artificial appearance while still maintaining enhanced dark part visibility
2Area of moving object
If the colored area extends to the white part of the eye to make the dark part appear larger, then the outer diameter exceeds the limbus and the eye looks brighter, but the boundary line becomes too sharp and creates an artificial impression
Solution Approach 1:
The patent applies local quality by creating different dot density zones: higher density in the inner circumference area overlapping the dark part to enhance its appearance, and lower density in the outer circumference area near the white part to create a soft, natural transition that avoids artificial sharp boundaries
Solution Approach 2:
Instead of using a clear, sharp line at the outer edge as in prior art, the patent inverts the approach by using a dense collection of small colored dots that create a soft, gradual transition effect. This inversion of the boundary creation method eliminates the artificial sharp line while maintaining the color enhancement effect
3Quantity of substance
If colored dots are densely packed to create a solid colored band, then the color coverage is strong and the dark part appears larger, but the transition to the white part becomes abrupt and unnatural
Solution Approach 1:
The patent applies local quality by varying the spatial distribution of colored dots: dense packing in the inner circumference area provides strong color coverage over the dark part, while sparse packing in the outer circumference area creates a gradual, natural transition to the white part of the eye
Solution Approach 2:
The patent segments the colored area into multiple zones with different dot densities. The inner circumference area has one density level for strong coloration, while the outer circumference area has a different density level for natural transition, creating a segmented structure that resolves the contradiction between strong color and natural appearance
Data Source
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AI summary
Provided is a colored contact lens in which a colored band (22) is disposed at a boundary part between a dark part (12) and a white part (14) of an eye, and a density is gradually changed from the dark part to the white part of the eye such that the density of this colored band (22) decreases from an inner circumference side to an outer circumference side. As a result, a novel colored contact lens is provided with which it is possible to bring out beauty of the white part (14) of the eye, which has been ignored by conventional technology, while an impression is maintained that is as natural and elegant as possible by avoiding an artificial impression such as that found in conventional technology.