Neural Network Prediction for Optical Lens Manufacturing

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Solution Overview

Problem

Existing optical article manufacturing processes require significant computational resources and time due to on-the-fly computations, leading to high costs and inefficient server sizing, especially during peak demand.

Innovation Solution

Utilizing neural networks to predict manufacturing parameters, reducing the need for real-time computations by training the network with historical data to accurately determine specification parameters for optical articles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If real-time computation is performed for each order using lens design software, then manufacturing precision and customization are improved, but computation time and IT resource consumption increase significantly

Engineering Contradiction:
Improveoptical parameter calculation accuracyVSAvoidcomputation time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-training neural networks with historical data and computational results before actual manufacturing orders are processed. The neural network models are trained in advance to learn the complex relationships between prescription parameters and manufacturing parameters, enabling fast predictions during production without requiring real-time complex computations for each order.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical computation system (lens design software performing real-time calculations) with a neural network-based prediction system. Instead of executing complex mathematical optimizations and algorithms in real-time, the system uses pre-trained neural networks to predict manufacturing parameters directly from prescription data, substituting computational mechanics with pattern recognition and prediction.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If server resources are sized to handle peak simultaneous orders, then service level during peak demand is improved, but costs increase due to unused resources during low demand periods

Engineering Contradiction:
Improveservice level during peak demandVSAvoidIT resource consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies preliminary action by pre-processing and training neural networks in advance, so that when orders come in during peak periods, the system can immediately provide fast predictions without requiring massive computational resources. The heavy lifting of learning complex relationships is done beforehand during low-demand periods.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces resource-intensive real-time computation systems with lightweight neural network inference systems. Once trained, neural networks require significantly fewer computational resources to make predictions compared to executing full lens design software algorithms, allowing the system to handle peak demands without proportionally increasing server infrastructure.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Manufacturing precision

If complex optical calculations are performed for each order, then manufacturing precision is improved, but IT infrastructure complexity and costs increase

Engineering Contradiction:
Improveparameter calculation accuracyVSAvoidIT system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mathematical optimization algorithms and lens design software with neural network models. The neural networks encapsulate the complexity of optical calculations within their trained parameters, providing accurate predictions through pattern recognition rather than explicit mathematical computations, thereby simplifying the IT infrastructure.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates simplified copies of the complex computation system in the form of neural network models. These models capture the essential relationships and patterns from the original complex calculations, providing approximate but sufficiently accurate predictions with much simpler computational requirements, effectively copying the functionality at lower complexity.

Inventive Principle:
Principle #26Copying

Data Source

PatentEP3881129B1A method and system for determining parameters used to manufacture an optical article and a corresponding optical article
Publication Date: 2025.08.20 ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)
  • EP3881129B1 patent drawingFigure 1
  • EP3881129B1 patent drawingFigure 2

AI summary

This method for determining specification parameters used to manufacture an optical article comprises steps of: training (200) at least one neural network to predict the specification parameters, by using a training data set comprising a plurality of training prescription parameters and corresponding training specification parameters; and predicting (202) specification parameters of the optical article by means of the at least one neural network, from prescription parameters relating to the optical article, on the basis of the training.