Multi-layer Spectacle Lens with Peripheral Laser Polishing
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Solution Overview
Problem
Existing spectacle lens designs lack variety and distinctiveness in terms of aesthetics, with most focusing on technical performance rather than design, making it difficult to produce a wide range of commercially appealing products.
Innovation Solution
A spectacle lens design involving two plastic members of different tones, where one member is positioned outside the eye and the other inside, integrated through stacking and partial peripheral surface removal using a processing head or laser beams, allowing for unique and varied designs by applying coloring agents or colored layers on the surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If spectacle lenses are designed with uniform patterns or simple protective/antireflection films, then manufacturing is simple and reliable, but design variety and aesthetic appeal are insufficient
Solution Approach 1:
The spectacle lens is divided into multiple layers with different structures: a first lens having a first surface and a second surface, and a second lens having a third surface and a fourth surface. The second lens is positioned closer to the eye than the first lens, creating a multi-layered structure that enables diverse design patterns while maintaining manufacturing feasibility through modular construction
Solution Approach 2:
The patent employs a nested structure where the second lens (with higher refractive index) is positioned between the first lens and the eye, creating concentric optical zones. This nesting arrangement allows different refractive indices and curvatures to be combined, generating varied design effects without requiring completely different lens structures
2Adaptability or versatility
If spectacle lenses use printed patterns or complex camouflage designs, then aesthetic appeal and design variety improve, but production complexity and manufacturing steps increase
Solution Approach 1:
The patent achieves design variety by changing physical parameters of the lens materials, specifically the refractive indices. The second lens has a refractive index of 1.7 or higher, while the first lens has a different refractive index, creating natural optical design effects through parameter variation rather than requiring printed patterns or complex surface treatments
Solution Approach 2:
The patent replaces complex surface printing or camouflage pattern application with a streamlined manufacturing process that uses multi-layer molding or assembly of lenses with different refractive indices. This substitution eliminates the need for separate printing steps while achieving comparable or superior design effects through optical property variations
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
Enables the production of a wide variety of distinctive spectacle lenses with unique designs, enhancing aesthetic appeal without compromising technical performance, suitable for mass production and various tone combinations.
Implementation Method 1
partially removing a peripheral surface portion of the lens having been processed in the first step, by causing a processing head to be in contact with or applying laser beams to a convex surface of the first member or a concave surface of the second member
Data Source
AI summary
A spectacle lens is produced through a first step of stacking a first member colored in cyan and a second member colored in red and integrating the first member and the second member, and a subsequent second step of partially polishing a periphery of a convex surface of the first member. Provision of the polishing step enables unique design and production of appropriate numbers of widely varied distinctive spectacle lenses.