Protective Eyewear Inner Lens Sub-Assembly with Ventilation Louvers
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Solution Overview
Problem
Existing ballistic protective eyewear systems do not adequately address the need for shatter-resistant, scratch-proof inner lenses that enhance ventilation and user handling, while also being cost-effective and comfortable to wear.
Innovation Solution
A universal inner lens sub-assembly designed for compatibility with both shield-type eyewear and goggles, featuring a soft frame with grip warts and a multi-component frame with air louvers for improved ventilation, which is shatter-resistant and prevents scratching of the outer lens, and includes a mechanism for easy user manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid inner lens sub-assembly is used for protection, then impact resistance is improved, but the risk of scratching the outer lens and shattering increases
Solution Approach 1:
The inner lens sub-assembly uses a composite construction with a rigid outer frame providing impact resistance and a soft inner frame preventing lens scratching. This multi-material approach resolves the contradiction by combining materials with complementary properties - the rigid exterior protects against external forces while the soft interior prevents damage to the outer lens.
2Object-affected harmful factors
If ventilation openings are added to prevent fogging, then air flow is improved, but the structural integrity and protection are reduced
Solution Approach 1:
Ventilation louvers are strategically positioned in specific regions of the frame where they provide effective air flow for fogging prevention while maintaining structural strength in critical load-bearing areas. The local placement of ventilation features allows the majority of the frame to retain its protective integrity.
3Ease of manufacture
If a universal inner lens sub-assembly is designed for multiple eyewear types, then manufacturing cost is reduced, but the fit and comfort for each specific application may be compromised
Solution Approach 1:
The inner lens sub-assembly is designed with universal compatibility features including standardized mounting interfaces and adjustable positioning mechanisms that allow a single design to fit multiple eyewear types (goggles and shields). The soft frame material provides adaptive conformity to different face shapes, maintaining comfort across various applications.
4Ease of operation
If the inner lens sub-assembly is made easily manipulable by users, then ease of installation is improved, but the security and reliability of fitment may be reduced
Solution Approach 1:
The inner lens sub-assembly is divided into separable components including the lens element and frame with modular mounting features. This segmentation allows users to easily handle and install individual components while the designed interface mechanisms ensure secure and reliable assembly once installed.
Data Source
AI summary
An eyewear assembly includes an outer first frame, at least one outer first lens, an inner second frame, and at least one inner second lens. The assembly includes a mechanism for holding the first frame and first lens in front of a user's face. The second frame has a mechanism for attachment to the first frame, to hold the second frame between the user's eyes and the first lens. The at least one second lens is carried by the second frame. The mechanism for attachment comprises a tab extending vertically on one of the first frame or the second frame and an aperture on the respective other of the first frame or the second frame for receiving said tab. The first frame includes a central elevated vent to distribute air over top vent openings of the first frame. Grip warts are provided on the first frame for gripping and manipulation by the user.