Eyewear Optical Filter Spectral Band Segmentation
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Solution Overview
Problem
Conventional eyewear lenses fail to enhance color vividness and clarity effectively, leading to a lack of high-definition color perception in various environments.
Innovation Solution
The development of lenses with an optical filter that attenuates visible light in specific spectral bands, incorporating organic dyes and interference coatings to increase chroma values and provide high-definition color perception by selectively absorbing light, thereby enhancing colorfulness and clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a dark film or coating is applied to strongly absorb visible light, then the luminous transmittance of the lens is significantly decreased, but the colorfulness and clarity of the scene are not effectively enhanced
Solution Approach 1:
The optical filter is divided into multiple spectral bands (first spectral band for blue light, second spectral band for yellow light) with distinct absorptance characteristics. Each band is optimized independently to achieve selective light attenuation that enhances colorfulness while controlling luminous transmittance, resolving the contradiction between reducing light transmission and maintaining color quality.
Solution Approach 2:
The lens applies different optical properties to different spectral regions. The first spectral band (400-500nm) has high absorptance (0.7-0.95) to enhance blue light transmission, while the second spectral band (550-580nm) has low absorptance (0.05-0.20) to maintain yellow light transmission. This localized spectral differentiation allows the lens to enhance colorfulness without uniformly reducing luminous transmittance.
2Adaptability or versatility
If the spectral bandwidth of absorptance peaks is increased to broaden light attenuation, then more spectral regions are covered, but the attenuation factor decreases reducing effectiveness in each band
Solution Approach 1:
The optical filter uses multiple discrete absorptance peaks at specific center wavelengths (475nm, 565nm, 650nm) rather than a single broad peak. This segmentation allows each peak to maintain high attenuation effectiveness (narrow bandwidth) while the combination of peaks provides broad spectral coverage across the visible range, resolving the contradiction between coverage and effectiveness.
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 lenses significantly increase chroma values in targeted spectral ranges, allowing wearers to perceive scenes in high-definition color, improving visual acuity and contrast without compromising overall color perception.
Implementation Method 1
The optical filter can be configured to attenuate visible light in a plurality of spectral bands
Implementation Method 2
incorporating organic dyes and interference coatings to increase chroma values
Data Source
AI summary
Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in certain spectral bands. At least some of the spectral bands can include spectral features that tend to substantially increase the colorfulness, clarity, and/or vividness of a scene. In certain embodiments, eyewear incorporates an optical filter that enhances chroma within one or more spectral bands. In some embodiments, a wearer of the eyewear can perceive the increase in chroma when viewing at least certain types of scenes.