Protective Strip Spacer for Spectacle Lens Packaging
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Solution Overview
Problem
The transport and handling of spectacle lenses with surface treatments are prone to degradation due to external contact, leading to increased packaging costs and inefficiencies in existing solutions, which often fail to prevent contact between the lens and the packaging, resulting in damage to the lens's surface treatment.
Innovation Solution
A method involving the deposition of a protective strip along the peripheral edge of the lens, which serves as a spacer to maintain distance between the lens and the packaging, preventing contact and allowing for safe handling while being reversible and easy to implement without specialized tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a protective film or foam is placed on the inner surface of the packaging wall, then the contact between glass and wall is softened, limiting degradation of the glass's surface treatment, but the packaging costs increase and fingerprints can still damage the surface treatment
Solution Approach 1:
A protective strip is introduced as an intermediary element between the glass lens and the packaging wall. This strip serves as a mediator that prevents direct contact while being easier to apply and remove compared to coating the entire inner surface with protective film or foam.
Solution Approach 2:
The protective strip is designed as a simple, inexpensive, single-use component that is applied during packaging and removed after use. It provides adequate protection during transport without requiring expensive materials or complex application processes.
2Object-affected harmful factors
If a protective pad is applied directly to the glass, then the treated surface is protected, but the cost increases and time is required for application, plus it is not compatible with glass requiring tracing ink
Solution Approach 1:
The protective strip is applied to the glass lens before packaging, serving as a pre-prepared protective layer that is already in position when the glass is placed in the packaging. This eliminates the need for complex application processes during packaging.
Solution Approach 2:
The protective strip acts as an intermediary that can be applied to the glass without interfering with tracing ink applications. It provides protection during transport while allowing subsequent machining and ink application steps to proceed normally.
3Object-affected harmful factors
If rigid packaging is created with dimensions adapted to the glass, then contact between glass and packaging wall is prevented, but manufacturing costs increase and each package type requires production of a different package for each glass size
Solution Approach 1:
The protective strip is designed as a universal component that can be applied to glass lenses of various sizes and shapes. A single strip design can protect different glass types, eliminating the need to create and produce multiple specialized package designs for different glass dimensions.
Solution Approach 2:
Instead of creating entirely different rigid packages for each glass size, the solution applies protective quality locally by adding a protective strip only where contact occurs. This allows the same basic package structure to be used for all glass sizes while providing localized protection at the critical interface points.
Data Source
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AI summary
The invention relates to a method for packaging an optical lens (1) comprising two faces (3, 5) and a peripheral edge (2), at least one (3) of said faces having a convexity marked by a peak point (4), said method comprising the following steps, - a step of depositing a protective strip (6) made from a rigid material at least partially along said edge (2), the width of the strip (6) extending beyond the peak point (4) of the convex face (3) of the lens (1), - a step of inserting the lens (1) into an envelope (10) delimited by a wall (11, 12), - a step of positioning said lens (1) in said envelope (10), such that the protective strip (6) acts as a spacer in order to maintain a distance between the wall (11, 12) of the envelope (10) and the convex face (3) of said lens (1) and thus preventing any contact between said wall (11, 12) and said face (3).