LED Short-Wavelength Blocking Element for Retinal Protection
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Solution Overview
Problem
The intensive use of LED-type displays poses a risk to human eye health due to the emission of short wavelengths, which existing technologies have not effectively addressed, particularly in the context of daily usage and the lack of simple, user-friendly solutions for existing products.
Innovation Solution
A blocking element for short wavelengths in LED-type light sources, comprising a substrate with a pigment that selectively absorbs wavelengths between 380 nm and 500 nm, with adjustable optical density based on user factors such as age, exposure time, and ambient lighting, implemented through a multilayer substrate or coating, and potentially via software modifications to reduce emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If LED-type displays are used for intensive daily usage, then productivity and information display are improved, but harmful short wavelength radiation increases causing retinal damage
Solution Approach 1:
A blocking element is introduced as an intermediary component between the LED light source and the human eye. This element selectively absorbs short wavelengths (380-500 nm) while allowing longer visible wavelengths to pass through, thereby mediating the harmful interaction between LED radiation and retinal tissue without completely blocking the useful light for display functionality
Solution Approach 2:
The blocking element exhibits wavelength-selective properties, differentiating between harmful short wavelengths and beneficial longer wavelengths. The material is designed with specific optical absorption characteristics that target only the 380-500 nm range, allowing the display to maintain its overall visibility and color accuracy while eliminating the harmful portion of the spectrum
2Object-affected harmful factors
If blocking elements are added to LED displays to filter short wavelengths, then retinal protection is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The blocking element's optical properties are optimized by adjusting material composition and thickness parameters. By controlling the absorption coefficient and layer thickness, the element achieves effective short wavelength blocking while maintaining compatibility with standard LED display manufacturing processes, avoiding the need for complex multi-component systems
Solution Approach 2:
The blocking element utilizes composite material structures combining different optical layers with complementary absorption characteristics. This approach achieves broad-spectrum short wavelength blocking (380-500 nm) through material composition rather than complex structural arrangements, simplifying integration into existing LED display architectures
3Object-affected harmful factors
If blocking elements are integrated into existing LED products, then eye protection is improved, but manufacturing precision and integration difficulty increase
Solution Approach 1:
The blocking element is designed as a separate, modular component that can be independently manufactured and then integrated into LED displays. This segmentation allows for specialized manufacturing of the optical filtering layer using proven techniques, then simple integration into the display assembly, reducing the precision requirements compared to incorporating filtering directly into the LED chip fabrication process
Solution Approach 2:
The blocking element is pre-manufactured with its optical properties optimized before integration into the LED display. This preliminary preparation of the filtering component allows for quality control and optimization to be performed separately, ensuring effective eye protection without requiring high-precision alignment or integration during the final product assembly
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 solution effectively protects the retina and cornea from harmful short wavelengths, reducing eye strain and improving visual comfort by selectively absorbing and reducing the emission of harmful light, thereby preventing cumulative and irreversible damage.
Implementation Method 1
said pigment has an optical density such that it allows the selective absorption of short wavelengths between 380 nm and 500 nm
Data Source
AI summary
Method, product and blocking element of short wavelengths in LED-type light sources consisting of a substrate with a pigment distributed on its surface and, in that said pigment has an optical density such that it allows the selective absorption of short wavelengths between 380 nm and 500 nm in a range between 1 and 99%.