Color-Enhancing Ophthalmic Lens With Dye-Based Wavelength Filtering
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Solution Overview
Problem
Existing ophthalmic lenses lack the ability to enhance color contrast by selectively filtering specific light wavelength ranges, particularly for improving perception of primary colors and reducing glare from specularly reflected light.
Innovation Solution
Incorporation of transmittance-attenuating dyes into ophthalmic lenses to create localized regions of reduced light transmission across specific wavelength ranges, combined with polarizing filters, to enhance color contrast and reduce glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple light attenuating dyes are incorporated into the lens, then color contrast enhancement is improved, but device complexity increases
Solution Approach 1:
The lens incorporates multiple distinct light attenuating dyes, each targeting specific wavelength ranges (e.g., cyan dye for 490-520nm, magenta dye for 540-580nm, yellow dye for 560-590nm). This segmentation of the spectrum into discrete bands allows precise control over which wavelengths are attenuated, enabling enhanced color contrast by selectively blocking complementary colors while transmitting primary colors.
Solution Approach 2:
The lens uses composite material composition by combining multiple dye substances within the lens matrix. Each dye contributes different spectral attenuation characteristics, and their combination creates a composite optical filter that achieves superior color contrast enhancement compared to single-dye solutions. The composite approach allows tuning of the transmission spectrum through selective dye combinations and concentrations.
2Adaptability or versatility
If dyes are added to attenuate specific wavelength regions, then transmission spectrum control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The lens design allows customization of the transmission spectrum by adjusting parameters such as dye concentration, dye type, and spectral position of attenuation minima. By varying these parameters, the lens can be tailored for different applications (e.g., enhancing perception of specific primary colors, reducing glare in particular wavelength ranges). The manufacturing process must precisely control dye incorporation to achieve the desired spectral profile.
3Object-affected harmful factors
If polarizing filters are combined with contrast-enhancing features, then glare reduction is improved, but device complexity increases
Solution Approach 1:
The lens merges two distinct optical functions into a single integrated structure: (1) spectral filtering through multiple light attenuating dyes that selectively absorb specific wavelength ranges, and (2) polarization filtering that blocks glare from specularly reflected light. This combination provides comprehensive glare reduction and color contrast enhancement while maintaining a unified lens design rather than requiring separate components.
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
Enhances color contrast by tuning the transmission spectrum, improving perception of primary colors and reducing glare, with customizable transmittance profiles tailored for various applications.
Implementation Method 1
Transmittance-attenuating dyes provide localized regions of reduced light transmission across specific wavelength regions, i.e., localized transmittance minima
Implementation Method 2
Contrast enhancing features can also be combined with polarizing filters for improved contrast enhancement. Glare observed in outdoor conditions, which is specularly reflected sun light, is often partially polarized white light
Data Source
AI summary
Embodiments of the disclosure relate to the use of dyes that impart localized regions of reduced transmittance across specific wavelength ranges. The inclusion of transmittance-attenuating dyes into a lens provides enhanced color contrast by tuning the spectrum of visible light transmission through the lens.