Tinted Contact Lens Packaging with Iris-Matching Color Indicator
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Solution Overview
Problem
Current contact lens packaging does not provide an accurate representation of how tinted lenses will appear on the eye, making it difficult for consumers to choose cosmetic contact lenses based on color before purchase.
Innovation Solution
A transparent molded base package with a flexible cover sheet that includes a colored area visible from the lens-facing surface, approximating human iris colors, allowing consumers to view the lens color through the package without opening it, using materials like metallocene polymers and co-polymers for the base and adhesive laminates for the cover sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a transparent bowl portion is used for packaging, then the lens is viewable through the package, but the lens color representation is inaccurate
Solution Approach 1:
A colored foil or colored layer is introduced as an intermediary element between the transparent bowl and the external environment. This intermediary layer reflects or transmits light in a way that accurately represents the lens color when viewed through the transparent packaging, solving the problem of inaccurate color representation while maintaining package transparency.
Solution Approach 2:
The packaging incorporates color-changing elements such as a colored foil or colored layer that matches the lens color. This allows the package to display accurate lens color information to consumers through the transparent bowl portion, enabling informed cosmetic contact lens purchases without compromising the transparency of the packaging.
2Loss of information
If a colored foil is added to the package, then the lens color can be viewed accurately, but the package complexity increases
Solution Approach 1:
The colored foil or colored layer is integrated with the existing transparent bowl structure to form a unified packaging system. The colored element is positioned within the bowl assembly, combining the transparency function with the color representation function in a single integrated package design, thereby minimizing structural complexity while achieving accurate lens color display.
3Reliability
If the bowl portion is made from hydrophobic material, then the lens is properly contained, but the material compatibility with tinted lenses is limited
Solution Approach 1:
The packaging employs composite material construction, combining hydrophobic materials for the structural bowl portion with colored foils or colored layers for optical representation. This composite approach allows the hydrophobic material to maintain reliable lens containment while the added colored elements provide versatility in representing different tinted lens colors, expanding adaptability without compromising containment reliability.
Data Source
Figure 1
Figure 2~3
AI summary
A package for contact lenses having a transparent molded base and a flexible cover containing an area of color.