Photo-bleaching Lens Care Solution for Disinfection Status
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Solution Overview
Problem
Contact lens users lack a direct method to determine if their lenses have been disinfected for a sufficient time period, as existing multiple-purpose solutions do not provide a visual indicator for disinfection completion.
Innovation Solution
A lens care kit with a colored lens care solution containing a water-soluble colorant and a lens case equipped with a light radiation source that gradually decomposes the colorant over a specific time period, indicating when the lenses are disinfected and ready for use by changing color from blue to colorless.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a colored lens care solution is used to indicate disinfection status, then users can visually identify when lenses are ready for wear, but the colorant may interfere with the disinfection effectiveness or lens safety
Solution Approach 1:
The patent extracts the color indication function from the disinfection function by using a separate water-soluble colorant that does not participate in the disinfection process. The colorant serves only as a visual indicator and can be easily removed from the lens and solution after disinfection, ensuring it does not compromise disinfection effectiveness or lens safety
Solution Approach 2:
The patent introduces light as an intermediary to trigger the decomposition of the colorant. The light radiation source causes the colorant to decompose and change color, providing a visual signal that disinfection is complete without the colorant itself interfering with the disinfection chemicals or lens materials
2Ease of operation
If multiple-purpose solutions are used to clean and disinfect lenses without mechanical rubbing, then convenience is improved, but users cannot determine if sufficient disinfection time has elapsed
Solution Approach 1:
The patent applies color change as a visual indicator system. The water-soluble colorant in the lens care solution changes color (from colored to colorless) through light-induced decomposition, providing users with clear visual feedback about disinfection completion. This maintains the convenience of multiple-purpose solutions while adding essential information about treatment status
Solution Approach 2:
The patent implements a feedback mechanism where the color change of the solution provides real-time information to users about the disinfection process status. As the light radiation source irradiates the solution, the progressive color fading gives users feedback that the disinfection is progressing and when it is complete, eliminating uncertainty about sufficient treatment time
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
Enables users to visually identify when their lenses are disinfected and ready for wear, ensuring proper disinfection without mechanical rubbing, while maintaining safety and effectiveness for all types of contact lenses.
Implementation Method 1
a lens case, wherein the lens case includes a light radiation source for irradiating the colored lens care solution, gradually decomposing the colorant
Data Source
AI summary
The present invention provides a lens care kit for disinfecting and cleaning contact lenses. The lens care kit of the invention allows customers to visually identify when their lenses are disinfected, clean, and ready to wear. The invention is relied on color change, due to temporally photo-bleaching of a colored lens care solution, to indicate the readiness of disinfection and cleaning of contact lenses.