Ophthalmic Lens Trimming via Centralized Frame Database
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for preparing ophthalmic lenses for spectacle frames are inefficient due to the need for manual data entry and acquisition, leading to reduced precision and increased preparation time, as opticians must manually gather and enter frame characteristics, which can result in deformation and inaccurate measurements during the trimming and centering processes.
Innovation Solution
A semi-automated method is introduced where a centralized register accessible to affiliated opticians stores frame characteristics, allowing for quick retrieval and updating of data, reducing the need for manual data acquisition and enabling precise trimming and centering by connecting devices to share information and automate the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual data acquisition and entry methods are used, then the optician can obtain frame characteristics, but the preparation time increases significantly and measurement precision decreases due to deformation and errors
Solution Approach 1:
The patent applies preliminary action by pre-storing frame characteristics data in a database before the actual lens trimming process. The database contains pre-acquired frame geometry, material properties, and other relevant parameters that can be directly retrieved during lens preparation, eliminating the need for real-time manual measurement and data entry.
Solution Approach 2:
The patent uses copying by creating a digital replica of frame characteristics in the database. Instead of repeatedly measuring the same frame, the system stores a digital copy of frame data that can be accessed and used multiple times for different lenses, ensuring consistency and reducing measurement errors.
2Measurement precision
If the feeler contacts the frame to acquire shape data, then the frame geometry can be measured, but the frame deforms under contact force reducing measurement accuracy
Solution Approach 1:
The system performs preliminary data acquisition of frame characteristics and stores them in advance. When a lens needs trimming, the pre-stored frame data is retrieved and used to generate trimming instructions without requiring physical contact with the frame, thus preventing deformation.
Solution Approach 2:
The patent introduces an intermediary database that mediates between the frame and the trimming process. Instead of directly measuring the frame during trimming, the system uses stored frame data as an intermediary reference to generate accurate trimming instructions without physical contact.
3Manufacturing precision
If additional data is acquired during each step, then precise mounting can be achieved, but the preparation time increases significantly
Solution Approach 1:
The patent merges multiple data acquisition functions into a single centralized database. Frame characteristics, lens parameters, and trimming instructions are all integrated in one system, allowing comprehensive data retrieval without repeating measurement steps for each lens.
Solution Approach 2:
The system performs preliminary data collection and storage of frame and lens characteristics. This pre-prepared data is then quickly retrieved during the trimming process, enabling precise mounting without the time-consuming repetition of data acquisition for each individual lens.
4Productivity
If approximate values are used instead of precise measurements, then preparation time is reduced, but the accuracy of lens trimming and centering deteriorates
Solution Approach 1:
The system performs preliminary acquisition and storage of precise frame and lens data. This pre-captured accurate information is then rapidly retrieved and used for trimming and centering operations, maintaining high precision while reducing the time required during actual lens preparation.
Solution Approach 2:
The patent uses digital copies of precise frame and lens characteristics stored in the database. These accurate digital replicas enable high-precision trimming and centering decisions to be made quickly without requiring repeated physical measurements or approximations.
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The invention relates to a method for trimming ophthalmic lenses in which an optical reference frame of the lens concerned and/or a trimming instruction is determined by means of a centration and/or trimming characteristic relating to the lens or to a related frame. According to the invention, the method comprises: a step in which a processing unit of a workshop (1) reads out from a remote register (200) in which each record is associated with a frame type and/or lens type, and comprises at least one centration and/or trimming characteristic of this type, with a search for a record corresponding to the type to which the frame and/or the lens concerned belongs, then, if no corresponding record is found in the register, a step of determining said at least one centration and/or trimming characteristic of the frame and/or of the lens in question, and a step of storing, in a new record of the register, said at least one centration and/or trimming characteristic.