Retroreflective Glasses Frame Side Sections Visibility
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Solution Overview
Problem
Current reflective safety glasses are not effective due to limited light-reflective capabilities and can interfere with the user's vision, as the reflective elements are typically located on the outer surface of the glasses frames, causing unwanted reflections into the eyes.
Innovation Solution
The design incorporates retroreflective elements attached to the side sections of the glasses frame, which are visible in low-light conditions without interfering with the user's vision, using materials like 3M™ Scotchlight™ reflective fabric or film integrated into recesses within the frame arms, ensuring minimal scattering and maximum visibility from various angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If retroreflective elements are attached to the outer surface of the glasses frame, then the visibility in low-light conditions is improved, but the user's vision is interfered with due to reflections into the eyes
Solution Approach 1:
The retroreflective elements are moved from the front outer surface of the frame to the side sections (temples/arms) of the glasses. This spatial relocation changes the dimension of placement from the anterior surface to the lateral extensions, allowing the reflective elements to be visible from the sides and rear without reflecting light into the user's forward vision path.
Solution Approach 2:
Different parts of the glasses structure are assigned different functions: the front frame supports lenses for vision, while the side sections specifically carry retroreflective elements for visibility. This functional differentiation ensures that reflective properties are localized to areas that do not interfere with the optical path through the lenses.
2Illumination intensity
If the outer surface of the glasses frame is used for reflective elements, then the light-reflective feature is provided, but the effective reflecting area is limited
Solution Approach 1:
The reflective surface area is expanded by utilizing the side sections (temples/arms) of the glasses, which extend laterally from the front frame. This adds significant surface area compared to the limited front outer surface, allowing for larger or multiple retroreflective elements to be attached along the length of the side sections.
Solution Approach 2:
The reflective surface is divided into multiple segments that can be attached to different portions of the side sections. This segmentation allows the retroreflective elements to be distributed along the extended side areas, effectively increasing the total reflecting area while maintaining flexibility in placement and design.
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 enhances the visibility of the user in low-light conditions without causing visual interference, providing improved safety and functionality by strategically placing retroreflective elements on the side sections of the glasses frame, utilizing materials that effectively return light to the source while maintaining clear vision.
Implementation Method 1
at least one retroreflective element attached to each of the side sections to be visible in low-light conditions
Data Source
AI summary
A structure of reflective glasses includes a frame having a main front section with opposed side ends for supporting at least one lens, the frame further including a pair of side sections extending rearwardly from the respective opposed side ends of the main front section and at least one retroreflective element attached to each of the side sections to be visible by others in low-light conditions.