Multilayer Surface Coating for Glare-Free Label Illumination
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Solution Overview
Problem
Conventional labels are not visibly illuminated enough in the absence of natural light, and increasing backlighting results in glare, making them difficult to read prominently.
Innovation Solution
A multilayer structure is formed on a surface with a light-permeable body, a light-absorbing first layer containing a mark, and a light-permeable second layer, allowing for appropriate illumination of the mark using an internal illuminator like an LED, ensuring visibility without glare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If backlighting luminance is increased to illuminate the label, then label visibility is improved, but glare is generated making the label difficult to read
Solution Approach 1:
The patent applies local quality by creating a multilayer structure where different regions have different optical properties. The first layer contains a light-absorbing portion and a light-permeable portion with the mark, allowing selective light transmission. This enables the label area to receive concentrated illumination while surrounding areas remain dark, providing sufficient label visibility without generating glare that would make the label difficult to read.
Solution Approach 2:
The patent transitions from a conventional single-layer label structure to a multilayer structure with distinct functional layers. The first layer (with light-absorbing and light-permeable portions) and second layer (light-permeable) create a three-dimensional optical path that directs light specifically through the mark area. This dimensional change enables precise control over where illumination occurs, resolving the contradiction between visibility and glare.
2Object-affected harmful factors
If conventional labels are used without backlighting, then glare is avoided, but label visibility in low-light conditions is insufficient
Solution Approach 1:
The patent introduces a multilayer optical structure as an intermediary between the light source and the label. The first layer with its light-absorbing and light-permeable portions acts as a mediator that selectively transmits light only through the mark area. This intermediary structure enables illumination in low-light conditions while maintaining glare avoidance by preventing light from reaching surrounding areas.
3Illumination intensity
If a multilayer structure with light-absorbing first layer and light-permeable second layer is formed, then appropriate illumination without glare is achieved, but device complexity increases
Solution Approach 1:
The patent achieves controlled illumination by changing the optical parameters of different layers. The first layer has regions with different light absorption characteristics (light-absorbing portion vs. light-permeable portion), and the second layer has high light permeability. By controlling these optical parameters, the patent achieves appropriate illumination without glare while keeping the structural complexity manageable through a systematic multilayer approach.
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 multilayer structure provides sufficient and glare-free illumination of the mark in low-light conditions, ensuring it remains prominently visible and readable.
Implementation Method 1
The first layer is substantially light absorbing and has a mark formed therein for permeating light therethrough
Implementation Method 2
The body is substantially light permeable... The second layer is substantially light permeable... the mark is illuminatable by light permeating through the body towards the first layer
Data Source
AI summary
A method for forming a multilayer structure on a surface is disclosed. The method comprises forming a body having a surface, the body being substantially light permeable. The method further comprises forming a first layer on the surface of the body, the first layer being substantially light absorbing and having a mark formed therein for permeating light therethrough, and forming a second layer on the first layer, the second layer being substantially light permeable. More specifically, the first layer has a mark formed thereon and light is permeable through the multilayer structure for illuminating the mark.