Adjustable Hidden Marking Position for Eyeglass Lens Edging
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Solution Overview
Problem
Existing methods for adding hidden markings to spectacle lenses often result in these markings being partially or completely lost during edging processing, especially when the interpupillary distance is small or large, leading to imbalance and potential missing of markings inside the spectacle frame.
Innovation Solution
A manufacturing method and system that calculates and adjusts the positions of hidden markings based on the interpupillary distance and frame center distance to ensure they remain inside the frame, using a design device to set and form the markings at specific positions to prevent loss during edging processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hidden markings are arranged at fixed positions on the spectacle lens, then the manufacturing process is simple, but the markings may be partially or completely lost during edging processing when interpupillary distance varies
Solution Approach 1:
The patent applies dynamics by making the marking arrangement adaptable rather than fixed. The system dynamically adjusts the position and selection of hidden markings based on the measured interpupillary distance and frame dimensions, ensuring markings remain within the frame boundaries while maintaining manufacturing automation.
Solution Approach 2:
The patent changes the parameters of marking arrangement based on measured values. Different interpupillary distances and frame center distances result in different marking positions and selections, allowing the system to optimize marking visibility for each specific lens-frame combination while maintaining automated manufacturing.
2Productivity
If hidden markings are arranged without considering interpupillary distance and frame center distance, then the manufacturing process is fast, but the markings may be imbalanced or missing inside the spectacle frame
Solution Approach 1:
The patent applies preliminary action by measuring the interpupillary distance and frame center distance before arranging the hidden markings. This pre-measurement and pre-calculation of marking positions ensures that markings are correctly positioned before the actual manufacturing process, preventing loss or imbalance while maintaining efficient production.
Solution Approach 2:
The patent uses feedback by measuring the actual interpupillary distance and frame center distance, then using these measured values to determine the optimal marking arrangement. This closed-loop approach ensures high positioning accuracy while maintaining manufacturing speed through automated calculation and adjustment.
3Device complexity
If hidden markings are engraved without position adjustment, then the manufacturing process is simple, but the markings may be lost during edging processing for small or large interpupillary distances
Solution Approach 1:
The patent replaces manual or fixed mechanical marking systems with an automated calculation and positioning system. The system uses measured interpupillary distance and frame center distance to automatically calculate optimal marking positions, substituting complex manual adjustment mechanisms with computational logic that maintains reliability while managing complexity.
Data Source
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AI summary
To arrange hidden markings of a spectacle lens inside a spectacle frame with balance and markedly reduce possibility of the hidden markings being partially lost or missing. A manufacturing method of a spectacle lens provided with hidden markings MH includes: setting forming positions of the hidden markings MH to certain positions; changing the forming positions of the hidden markings based on at least one parameter obtained from spectacle lens product-related information that indicates information about a spectacle lens product, spectacle frame-related information that indicates information about a spectacle frame, prescription-related information that indicates information about a prescription for a wearer, and fitting-related information that indicates information about fitting for the wearer; and forming the changed hidden markings MH.