Age-Adaptive Spectral Filter for Ocular Media Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sunglasses do not adequately account for the changes in ocular media with age, leading to impaired visual performance and discomfort in seniors, as they fail to consider the specific spectral transmittance of the aging eye, which affects light sensitivity and color vision.
Innovation Solution
A method to determine a filter with a tailored spectral transmittance profile that matches the user's ocular media characteristics, including a maximum transmittance value between 380 nm and a predetermined wavelength threshold, and a decreasing transmittance value between this threshold and 670 nm, to improve visual comfort and performance by compensating for age-related transmittance losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If generic sunlenses are used for all age groups, then manufacturing simplicity is maintained, but visual performance and comfort are impaired for seniors due to age-related ocular media changes
Solution Approach 1:
The patent applies parameter changes by adjusting the spectral transmittance characteristics of the lens filter based on the wearer's age. The method determines a personalized spectral transmittance profile that compensates for age-related ocular media changes, transforming a generic lens design into an age-adapted solution that maintains both manufacturing feasibility and visual performance reliability
Solution Approach 2:
The patent implements local quality by creating spectrally selective filtering regions within the lens. Rather than uniform filtering across all wavelengths, the lens provides differentiated transmittance across the spectrum, with specific wavelength ranges enhanced or reduced based on the wearer's age-related ocular media characteristics, thereby improving visual performance while maintaining practical manufacturability
2Object-affected harmful factors
If dark filters are used to protect against light for seniors, then protection against harmful light is improved, but visual performance deteriorates due to excessive darkness
Solution Approach 1:
The patent changes the transmittance parameter selectively across different wavelength ranges rather than applying uniform darkness. The spectral transmittance profile is optimized to provide strong protection in harmful wavelength ranges while maintaining higher transmittance in visible ranges critical for visual performance, thereby resolving the contradiction between protection and visual function
Solution Approach 2:
The lens applies different filtering strengths to different spectral regions, providing localized protection where needed (UV and blue light ranges) while preserving light transmission in ranges essential for vision. This spectrally differentiated approach allows simultaneous achievement of light protection and maintained visual performance
3Reliability
If age-specific spectral transmittance profiles are determined and applied, then visual comfort and performance are improved, but measurement and manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-determining age-specific spectral transmittance profiles based on established ocular media characteristics for different age groups. Rather than requiring complex real-time measurements for each individual, the method uses pre-characterized age-related data to guide lens design and manufacturing, thereby reducing on-site measurement complexity while maintaining personalized effectiveness
Solution Approach 2:
The patent manages complexity by systematically varying key spectral parameters based on age categories rather than requiring full individual customization. This approach maintains visual comfort improvement while preventing manufacturing complexity from becoming unmanageable through structured parameter adjustment
4Object-affected harmful factors
If unadapted sunlenses are worn by seniors, then protection against bright light is achieved, but color vision and light sensitivity are impaired due to ocular media yellowing
Solution Approach 1:
The patent changes the spectral transmittance parameters to compensate for ocular media yellowing. By analyzing the wearer's age-related ocular media characteristics, the lens profile is adjusted to restore balance in the transmitted spectrum, particularly enhancing transmission in wavelength ranges affected by yellowing while maintaining protection in harmful ranges, thereby preserving color vision information
Solution Approach 2:
The patent converts the harmful effect of ocular media yellowing into a beneficial design parameter. Rather than simply blocking all light, the lens profile is specifically tailored to counteract the spectral distortion caused by yellowing, using the knowledge of age-related changes to create a compensatory filtering pattern that restores natural color perception while maintaining protection
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
The method allows for improved light entrance and balanced color vision across different ages, reducing rehabilitation time after cataract surgery and providing suitable lenses that are not too dark, thereby enhancing visual comfort and performance.
Implementation Method 1
determining at least one filter based on the determined spectral transmittance of the ocular media of said user such that said filter has a spectral transmittance profile comprising: a first portion having a maximum transmittance value between 380 nm and a predetermined wavelength threshold, a second portion with a decreasing transmittance value between said predetermined wavelength threshold and 670 nm
Data Source
AI summary
Disclosed is a method for determining a filter for a visual equipment to be placed in front of the eye of a user to improve visual comfort and/or visual performance of the user, the method including: determining the spectral transmittance of an ocular media of an eye; and determining a filter based on the determined spectral transmittance of the ocular media so the filter has a spectral transmittance profile including: a first portion having a maximum transmittance value between 380 nm and a predetermined threshold, and a second portion with a decreasing transmittance value between the threshold and 670 nm. Also disclosed is a filter whose spectral transmittance is calculated based on the spectral transmittance of the user's ocular media, as well as a set of filters with each filter in the set having a spectral transmittance based on the spectral transmittance of the ocular media of users having different ages.