Eyeglass Lens Hole Drilling Angle Control
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Solution Overview
Problem
Existing eyeglass lens processing methods for rimless frames require skilled operators to accurately set the angle of holes, which is challenging due to the need to consider the surface curves of demo and actual lenses, especially when the frames have turning preventive contacts, making it difficult to adjust the fitting and temple opening angles.
Innovation Solution
An eyeglass lens processing apparatus with a control system that allows for automatic or precise manual setting of hole angles based on the surface curves of demo and actual lenses, using a combination of measurement tools and user interfaces to input and adjust hole positions and angles, enabling efficient processing without requiring extensive skill.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the hole angle is set in the normal line direction relative to the front surface of the lens, then the processing can be automated, but the fitting accuracy deteriorates when surface curves of demo lens and actual lens differ
Solution Approach 1:
The patent applies preliminary action by measuring and storing the surface curve data of the demo lens before actual lens processing. The system pre-calculates the appropriate hole angle based on the demo lens curvature, then uses this pre-determined angle when processing the actual lens, eliminating the need for skilled operators to manually adjust angles while maintaining high precision.
Solution Approach 2:
The patent uses copying by creating a digital model of the demo lens surface curve and applying this copied geometric information to guide the hole angle calculation for the actual lens. The system copies the curvature characteristics from the demo lens to determine the optimal drilling angle, ensuring consistency between demo and actual lens fittings.
2Manufacturing precision
If skilled operators manually set the hole angle considering surface curve relationships, then the fitting accuracy improves, but the operation complexity and skill requirement increase
Solution Approach 1:
The patent implements self-service by enabling the processing system to automatically measure, calculate, and determine hole angles without requiring external expert intervention. The system serves itself by using its own measurement capabilities to capture lens curvature data and automatically compute the optimal drilling parameters, eliminating the need for skilled operators while maintaining high precision.
Solution Approach 2:
The patent replaces the mechanical system of manual measurement and calculation with an automated optical-mechanical system. Instead of operators physically measuring lens curves and calculating angles, the system uses optical sensors to capture surface geometry and automatically computes hole angles through integrated control algorithms, substituting human expertise with automated measurement and computation.
3Ease of operation
If the hole angle is arbitrarily set, then the operation becomes simple, but the fitting quality and temple opening angle adjustment capability deteriorate
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the hole drilling angle parameter based on measured lens surface curvature. Instead of using a fixed or arbitrary angle, the system varies the drilling angle parameter according to the specific curvature characteristics of each lens, ensuring optimal fitting quality while maintaining automated operation through programmable parameter adjustment.
Data Source
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AI summary
An eyeglass lens processing method for processing a hole for attaching a rimless frame on an eyeglass lens, the method includes: selecting a pattern used for a processing from a plurality of patterns of holes to be processed; selecting a first drilling in which an angle of the processed hole is normal at least to a lens surface of a demo lens or a second drilling in which the angle of the processed hole is normal to a lens surface of the eyeglass lens; and when the first drilling is selected, (a) inputting a surface curve of the demo lens, (b) inputting hole position data of the demo lens for the selected pattern, (c) determining an hole angle and a hole position for the eyeglass lens based on the surface curve of the demo lens and the hole position data to obtain drilling data.