Lens Trimming Adapter Verification System
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Solution Overview
Problem
Existing methods for trimming ophthalmic lenses on a frame are prone to errors due to incorrect adapter sizing, leading to misalignment and slipping during machining, resulting in an undesired final contour.
Innovation Solution
A device with feeler means that acquires and verifies the geometric characteristics of the lens adapter, ensuring it matches the desired contour and surface wettability angle, allowing for precise and reliable trimming by either grinding or cutting, depending on the adapter's suitability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the size of the adapter applied is greater than the size of the desired contour, then the adapter will be machined by the machining tool, but the centering and alignment of the lens are modified resulting in an undesired final contour
Solution Approach 1:
The patent applies preliminary action by measuring the geometric characteristics of the adapter and verifying its adequacy before the machining operation begins. The system determines the radial extent of the adapter with respect to the desired final contour and verifies whether it is suitable for the machining cycle, preventing errors before they occur during the actual trimming process
Solution Approach 2:
The patent implements feedback by using feeler means to acquire the geometric characteristics of the adapter, then comparing these characteristics against the requirements for the desired contour and machining cycle. The electronic processing means provides feedback information about the adequacy of the adapter, allowing for verification and correction before machining begins
2Reliability
If the size of the adapter applied is smaller than the size of the adapter provided, then the adapter risks not being able to rotate the lens correctly, but the lens may slip off the lens locking adapter due to torque exerted by the machining tool
Solution Approach 1:
The system uses feeler means to acquire geometric characteristics of the adapter and provides feedback through electronic processing means about whether the adapter is adequate for the desired machining cycle. This feedback mechanism verifies the adapter's ability to maintain lens rotation stability while keeping the selection process automated and simple
Solution Approach 2:
The system applies self-service by having the adapter itself provide the information needed for verification. The feeler means measure the geometric characteristics directly from the adapter, and the electronic processing means automatically determines adequacy without requiring manual intervention or complex selection procedures
3Manufacturing precision
If manual adapter selection is used, then the process is simple to operate, but handling errors lead to incorrect adapter sizing and machining errors
Solution Approach 1:
The patent replaces the manual mechanical selection process with an automated system using feeler means and electronic processing means. The system automatically measures, compares, and verifies adapter characteristics, substituting human judgment with automated verification to eliminate handling errors while maintaining operational simplicity
Solution Approach 2:
The verification system applies self-service by automatically measuring the adapter's geometric characteristics and determining its adequacy without requiring external intervention. The system performs self-verification of the adapter-lens匹配, reducing complexity by making the verification process autonomous
Data Source
Figure 1
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AI summary
The present invention concerns a method of trimming an optical lens, including the machining of a lens (100) based on a desired shape (120) in conformance with a programmed machining cycle, the lends being secured by at least one lock adapter (101, 102) applied on one surface (108, 109) of said lens. Prior to this machining, at least one geometric characteristic (115, 125) of the lock adapter by scanning with or without contact, and the adequacy of the geometric characteristic acquired by the lock adapter in comparison with the desired shape of the lens or a characteristic of the lens is verified. The invention also concerns a device for implementing such method.