Progressive Lens Power Distribution for Personalized Lens Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for selecting spectacle lenses fail to adequately consider customer needs and measured eye values, resulting in difficulty for optometrists in choosing the optimal lens for customers and providing clear product differences.
Innovation Solution
An apparatus and method for determining a refractive power distribution of progressive spectacle lenses, incorporating variables such as distance-vision part, near-vision part, and progression corridor, using devices to provide past and current visual impressions, characteristics, and individual needs to calculate a customized refractive power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing methods for selecting spectacle lenses are used, then the selection process is simple, but the ability to adequately consider customer needs and measured eye values is insufficient
Solution Approach 1:
The selection system is divided into multiple independent modules: a providing device that collects customer data (visual impressions, characteristics, individual needs), a determining device that analyzes the data, and a calculating device that computes the optimal refractive power distribution. This segmentation allows each module to perform its specific function efficiently while maintaining overall system manageability.
Solution Approach 2:
The apparatus integrates multiple functions into a single system: data collection from various sources (visual impressions, eye measurements, customer needs), data analysis to determine changes in refractive power distribution, and calculation of the final lens parameters. This multi-functional integration improves measurement precision without proportionally increasing device complexity.
2Manufacturing precision
If multiple variables characterizing refractive power distribution are considered, then the customization accuracy improves, but the calculation complexity increases
Solution Approach 1:
The providing device collects and organizes all necessary customer data (visual impressions, characteristics, individual needs) before the calculation process begins. The determining device pre-analyzes this data to identify the required changes in refractive power distribution variables. This preliminary preparation reduces the complexity of the final calculation by the calculating device, as the input data is already structured and processed.
3Adaptability or versatility
If individualized refractive power distribution is calculated based on multiple parameters, then the adaptability to customer needs improves, but the time required for determination increases
Solution Approach 1:
The determining device continuously analyzes the relationship between customer needs and refractive power distribution variables, adjusting the calculation parameters based on the collected data. The system uses feedback from the providing device about customer visual impressions and characteristics to refine the determination process, enabling faster convergence to the optimal solution while maintaining high adaptability.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an apparatus (800) for determining a refraction power distribution of a progressive spectacle lens (820) comprising - a first providing device (801), for providing a measure of at least one variable, characterizing the refractive power distribution, of a progressive spectacle lens of progressive spectacles worn in the past by the spectacle wearer - a second providing device (802), for providing current information concerning a visual impression of the spectacle wearer with the progressive spectacles worn in the past, - a third providing device (803), for providing current visual characteristics of the spectacle wearer, - a fourth providing device (804), for providing current individual needs of the spectacle wearer, - a determining device (806, 808), for determining a measure of a to-be-desired change of at least one variable of the progressive spectacle lens, characterizing the refractive power distribution, of the progressive spectacles worn in the past by the spectacle wearer, - a calculating device (810, 808) for calculating the refractive power distribution of the spectacle lens for the wearer based on the previously determined information. The invention also relates to a respective computer-implemented method and also a computer program for carrying out the method.