Embedded Micro-Lens Spectacle Lens Manufacturing
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Solution Overview
Problem
Existing methods for manufacturing spectacle lenses with embedded micro-lenses to slow down myopia progression face challenges in creating micro-lenses with exact required properties, leading to inaccurate focusing and potential worsening of myopia over time.
Innovation Solution
A method for manufacturing a spectacle lens with a base portion and embedded solid optical elements, where the optical elements are arranged on the inner face of the base portion and a second part of the base portion is molded onto them, allowing for precise shaping and refraction properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If micro-lenses are created by dropping resin material and molding, then the lens can be manufactured, but the micro-lenses cannot achieve exact required optical properties
Solution Approach 1:
The patent applies preliminary action by pre-manufacturing solid optical elements with exact required optical properties before assembling them into the final lens. These pre-manufactured elements are then arranged and embedded into the base portion, ensuring precise optical characteristics are achieved without compromising the overall manufacturing feasibility of the lens assembly.
2Manufacturing precision
If solid optical elements are manufactured separately and embedded, then exact optical properties are achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the lens manufacturing into separate stages: first manufacturing the base portion, then separately manufacturing solid optical elements with precise optical properties, and finally embedding these elements into the base portion. This segmentation allows each component to be optimized independently, achieving exact refraction properties while managing complexity through modular assembly.
3Reliability
If micro-lenses are embedded in the base portion, then myopia progression can be slowed, but the focusing accuracy for near vision is compromised
Solution Approach 1:
The patent applies local quality by embedding solid optical elements with specific refraction properties at particular locations within the base portion. These elements have distinct optical characteristics tailored to their positions, enabling them to correct focusing inaccuracies for near vision while maintaining the overall myopia control function of the lens.
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
This method enables the creation of spectacle lenses with accurately defined optical properties, effectively slowing down or stopping the progression of myopia by ensuring precise refraction and focusing.
Implementation Method 1
said gluing material is polymerizable; said gluing material is polymerized before said step of manufacturing
Data Source
AI summary
The invention relates to a method for manufacturing a spectacle lens including a base portion and a plurality of solid optical elements (20) that have refraction properties distinct from those of the base portion and that are embedded in the base portion, comprising:—a step of providing said solid optical elements and a first part (11) of said base portion,—a step of arranging said solid optical elements (20) on the inner face of a first part of said base portion, and—a step of manufacturing a second part of said base portion onto said inner face and said solid optical elements to obtain said spectacle lens.