Eyeglass Lens Layout Setting Device Warp Angle Measurement
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Solution Overview
Problem
Existing eyeglass lens processing technologies face challenges in accurately determining the warp angle of rimless frames, which is crucial for precise lens fitting, as current methods are cumbersome and rely on visual estimation with a protractor.
Innovation Solution
A layout setting device with a display and input unit that allows for the measurement and input of warp angles using a graphical interface, enabling the calculation of lateral deviation for precise lens positioning in eyeglass lens processing apparatuses, frame measuring devices, and cup attaching devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual estimation with a protractor is used to measure the warp angle of a rimless frame, then the measurement can be performed, but the operation becomes troublesome and time-consuming
Solution Approach 1:
The patent replaces the mechanical protractor-based visual estimation method with an automated image processing system. The display control unit captures images of the frame and uses image processing algorithms to automatically calculate the warp angle, eliminating the need for manual protractor operations while maintaining measurement accuracy.
Solution Approach 2:
The system performs self-measurement by automatically processing images of the frame to determine the warp angle. The display control unit and image processing unit work autonomously to calculate the angle without requiring external measurement tools or manual intervention, making the system self-sufficient and operationally simple.
2Measurement precision
If three-dimensional shape data is measured by the eyeglass frame measuring device to obtain the warp angle, then accurate measurement is achieved, but this method is not applicable to rimless frames where only two-dimensional shape data is obtained
Solution Approach 1:
The patent creates a universal measurement system that can handle both rimless frames (2D data) and framed glasses (3D data). The display control unit is designed to process images and calculate warp angles for any frame type, making the system adaptable to different frame configurations without requiring separate measurement methodologies.
Solution Approach 2:
The system replaces the 3D mechanical measurement approach with a 2D image processing approach that can universally apply to all frame types. By using image capture and processing algorithms, the system can derive warp angle information from 2D images of rimless frames, just as it processes 3D data from framed glasses, achieving universal applicability.
Data Source
AI summary
A layout setting device that sets layout of a target lens shape used as a processing shape with respect to an eyeglass lens when the lens is processed to fit the lens to an eyeglass frame, the layout setting device includes: means for inputting data on the target lens shape; a display; a display control unit that switches between a first screen and a second screen to be displayed on the display or displays the first and second screens at the same time on the display, the first screen being used to input layout data including a pupillary distance of a user using the frame and a frame pupillary distance of the frame, and the second screen being used to measure a warp angle of the frame; and means for inputting the layout data using the first screen.