Ophthalmic Lens Adhesive Label Positioning Visual Aid
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Solution Overview
Problem
The challenge in applying adhesive stickers to ophthalmic lenses prior to edging operations is the difficulty in precise positioning, leading to potential misalignment, tool wear, and loss of adhesion, especially on lenses with hydrophobic or oleophobic coatings, which can result in machining defects and improper fitting in spectacle frames.
Innovation Solution
A method and device that utilize geometric data to determine the precise positioning of the adhesive sticker within the initial contour of the lens, providing a visual aid to assist in accurate placement, ensuring the sticker is inside the final contour and aligned correctly, using a support, camera, and processing unit to display the final contour on the lens, aiding in centering and orientation, even for non-circular stickers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the adhesive sticker is applied by hand without visual guidance, then the operation is simple and quick, but the positioning precision is poor leading to misalignment and machining defects
Solution Approach 1:
The patent uses a camera to capture the initial contour of the lens and a processing unit to generate a visual aid representing the final contour. This visual copy guides the operator in placing the adhesive sticker precisely within the final contour boundaries, resolving the positioning precision issue without requiring complex automated systems.
Solution Approach 2:
The visual aid generated by the processing unit acts as an intermediary between the camera's captured lens image and the operator's manual placement action. This intermediary visual representation enables precise positioning guidance while keeping the overall system relatively simple.
2Reliability
If the adhesive sticker is positioned incorrectly, then the application process is faster, but it causes tool wear and breakage during edging operations
Solution Approach 1:
The patent performs the preliminary action of generating and displaying the visual aid before the operator applies the adhesive sticker. This advance visual guidance ensures correct positioning is achieved during the application process, preventing tool wear and breakage that would occur with incorrect positioning.
3Reliability
If the adhesive sticker is not precisely centered, then the application is easier and quicker, but it leads to detachment during edging and loss of adhesion
Solution Approach 1:
The camera captures the lens and the processing unit generates a visual aid that provides real-time feedback to the operator during the adhesive sticker application process. This feedback mechanism ensures precise centering and positioning, guaranteeing reliable adhesion while maintaining ease of operation through clear visual guidance.
4Manufacturing precision
If manual positioning is used without visual aids, then the operation remains simple, but the manufacturing precision of sticker placement deteriorates
Solution Approach 1:
The patent creates a visual copy of the lens's initial contour using a camera and processes it to generate a visual aid showing the final contour. This copied visual information enables precise sticker placement guidance while adding minimal complexity to the overall system, as it relies on standard imaging and processing capabilities.
Data Source
AI summary
Disclosed is a method for assisting a user in taping an adhesive label to a surface of an ophthalmic lens with an initial contour prior to edge grinding, the method including:—holding of the ophthalmic lens with its initial contour by a holder,—determining, from geometric data for the final contour of the ophthalmic lens to be produced, of a position of the final contour inside the initial contour of the ophthalmic lens,—creating a visual aid for the user enabling the latter to apply the adhesive label to the ophthalmic lens with its initial contour prior to edge grinding, such that the adhesive label can be applied inside the final contour.