Optical Lens Taping with Segmented Adhesive for Positioning Accuracy
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Solution Overview
Problem
The manufacturing of optical lenses is hindered by inaccuracies in positioning and shaping of surfaces due to the obstruction of protective tapes covering reference markings, leading to potential optical errors.
Innovation Solution
A method involving the use of adhesive tape that covers only part of the optical lens surface, leaving reference elements uncovered to enhance positioning accuracy, combined with a blocking system that utilizes a blocker reference system to ensure precise alignment and machining of the second surface based on identified referencing elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective tape is placed on the finished surface of the lens to protect it during blocking, then the lens surface is protected from damage, but the viewing of engraved reference markings becomes difficult, leading to inaccurate positioning
Solution Approach 1:
The protective tape is segmented into multiple separate tapes rather than a single continuous tape. This allows specific areas (reference markings) to remain uncovered while other areas are protected, resolving the contradiction between protection and visibility of reference markings
Solution Approach 2:
Different areas of the lens surface receive different treatments: reference markings are left uncovered for visibility while surrounding areas are covered with protective tape. This local differentiation allows simultaneous achievement of protection and accurate positioning
2Reliability
If the reference markings are covered by protective tape, then the lens surface is fully protected, but the determination of lens position becomes inaccurate, creating optical errors
Solution Approach 1:
The protective coverage is segmented to exclude reference marking areas, allowing these critical features to remain visible and accessible for accurate positioning while other areas receive full protection
Solution Approach 2:
The protective tape is applied in a predetermined pattern that pre-identifies which areas should remain uncovered (reference markings) before the blocking process begins, ensuring accurate positioning is maintained throughout manufacturing
3Reliability
If a continuous protective tape is used to maximize protection, then the lens surface is fully protected, but the relative positions of optical surfaces cannot be accurately determined after manufacturing
Solution Approach 1:
The protective tape is divided into separate segments that strategically avoid reference marking areas, preserving visibility information needed for determining relative surface positions while providing protection elsewhere
Solution Approach 2:
The segmented protective tape acts as an intermediary that selectively protects areas while leaving reference markings exposed, serving as a mediator between the need for protection and the need for information visibility
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 improves the accuracy of surface positioning and manufacturing of optical lenses by allowing clear visibility of reference markings and precise alignment, reducing the likelihood of optical errors and enhancing the quality of the final lens product.
Implementation Method 1
an adhesive tape is provided on the first surface of the lens member
Data Source
AI summary
Method of taping an optical lens member (10) to be manufactured. An optical lens member providing step (S1) is performed during which an optical lens member (10) is provided, the optical lens member has a first optical surface (11) associated with a first reference system and a second optical surface (12) to be manufactured, the first and second optical surfaces being connected by a external periphery surface (14), the first reference system being identified by at least one referencing element (111) on the first optical surface and/or the external periphery surface of the optical lens member, a taping step (S2) during which an adhesive tape (17) is provided on the first surface of the lens member so as to cover at least part of the first surface and leaving the referencing element uncovered.