Contact Lens Case Support for One-Touch Lens Transfer
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Solution Overview
Problem
Existing contact lens cases fail to provide a consistent one-touch transfer of lenses from the case to the wearer's finger, often requiring manipulation and increasing the risk of lens damage, bacterial transfer, and ecological impact, while maintaining lens hydration and optical integrity.
Innovation Solution
A contact lens case design with a support that maintains the lens in a convex orientation, minimizes contact area between the lens and support, and includes features for effective solution drainage, ensuring consistent one-touch transfer without lens inversion or damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the lens is fully submerged in lens solution during storage, then lens hydration and integrity are maintained, but lens solution must be drained effectively before transfer to avoid impacting the one-touch transfer process
Solution Approach 1:
The case is designed with a drainage mechanism that automatically removes excess lens solution before the user needs to transfer the lens. This preliminary drainage action ensures the lens is ready for direct one-touch transfer without requiring the user to manually wipe or drain the lens, thus maintaining both hydration and ease of operation.
Solution Approach 2:
The case is divided into separate functional zones: a storage chamber for maintaining lens hydration and a drainage pathway that separates the lens from excess solution. This segmentation allows the lens to remain hydrated during storage while enabling easy removal of solution before transfer, resolving the contradiction between maintaining hydration and facilitating transfer.
2Shape
If the lens support contacts the lens periphery to maintain convex orientation, then lens positioning is improved, but contact area should be minimized to prevent lens sticking and facilitate drainage
Solution Approach 1:
The lens support is designed with differentiated contact zones: the periphery provides localized contact points (at least three points) to maintain convex orientation, while the central area remains clear to minimize overall contact area. This local quality differentiation allows the support to achieve proper positioning without creating excessive contact area that would cause lens sticking or impede drainage.
Solution Approach 2:
The contact between lens and support is segmented into discrete peripheral contact points rather than continuous contact. This segmentation maintains the necessary mechanical support for convex orientation while minimizing the total contact area, preventing lens sticking and facilitating effective drainage of lens solution.
3Strength
If the case protects the lens from damage, then lens integrity is maintained, but the case should not crush or damage the lens during storage and transfer
Solution Approach 1:
The case employs a flexible lid that can conform to the lens shape during storage without applying crushing forces. The lid's flexibility allows it to protect the lens from external damage while accommodating the lens's convex shape without imparting excessive stress or causing deformation, thus maintaining both protection and lens integrity.
Solution Approach 2:
The case is designed with a lid that automatically adapts to the lens shape upon closure, preventing crushing before it can occur. This preliminary adaptation ensures the lens is protected from damage during storage and transfer without subjecting it to excessive compressive forces that would cause crushing or deformation.
4Object-affected harmful factors
If the lens is transferred with minimal manipulation, then the risk of bacterial transfer and lens damage is reduced, but consistent one-touch transfer reliability must be achieved
Solution Approach 1:
The case performs preliminary preparation by draining excess lens solution and positioning the lens in a convex orientation on the support before the user needs to transfer it. This preliminary action ensures the lens is ready for direct one-touch transfer to the finger, achieving consistent reliability while minimizing manipulation steps and reducing bacterial transfer risk.
Solution Approach 2:
The lens support structure is designed to automatically hold the lens in the correct convex orientation and position without requiring user manipulation. The support's geometry and contact points are configured to self-position the lens, enabling consistent one-touch transfer directly from the case to the finger, thereby reducing bacterial transfer risk while maintaining high reliability.
Data Source
AI summary
The present invention relates to contact lens cases which allow the lens to be removed from the lens case with a single touch. The lenses cases comprise a lens support which holds the lens in a convex position. When package is drained there is less contact area between the support and wetted contact lens, than between the user's finger and the contact lens, providing the desired one touch transfer.