Semi-Finished Spectacle Lens Identification With Removable Sticker Codes

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Solution Overview

Problem

Existing methods for identifying semi-finished spectacle lenses require significant surface area for coding, which can damage the lens surface and limit early identification and individualization, making it difficult to track and correct manufacturing parameters.

Innovation Solution

Applying a detachable sticker with a unique code on the semi-finished spectacle lens that covers or partially covers an embossed code, allowing early identification and tracking, and serving as a reference for subsequent manufacturing steps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a detachable sticker with unique code is applied to the semi-finished spectacle lens, then identification and tracking efficiency is improved, but the lens surface area required for coding increases

Engineering Contradiction:
Improveidentification and tracking efficiencyVSAvoidlens surface area
Core Design Contradiction:
ProductivityVSArea of stationary object

Solution Approach 1:

A detachable sticker serves as an intermediary carrier for the unique identification code, separating the coding function from the lens surface itself. The sticker can be applied to the lens during manufacturing and removed later, providing efficient identification without permanently occupying lens surface area.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The identification system is segmented into a removable sticker component and the lens component. This allows the coding function to be isolated on a separate element that can be applied and removed independently, improving identification efficiency without committing permanent surface area on the lens.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If existing codes are covered by the detachable sticker, then mechanical surface treatment is reduced, but code readability may be affected

Engineering Contradiction:
Improvemechanical surface treatment requirementVSAvoidcode readability
Core Design Contradiction:
Ease of manufactureVSDifficulty of detecting and measuring

Solution Approach 1:

The detachable sticker acts as a temporary intermediary that covers existing embossed codes during manufacturing processes, eliminating the need for mechanical surface treatment to expose them. The sticker can be removed when code reading is required, restoring readability without requiring additional mechanical processing.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The sticker is applied in advance during manufacturing to protect and transport the lens with its embossed code intact. This preliminary covering action prevents the need for subsequent mechanical surface treatment, as the code remains preserved underneath the sticker throughout the manufacturing process.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If detachable stickers are used for identification, then early individualization and data-driven quality control are enabled, but the complexity of the manufacturing process increases

Engineering Contradiction:
Improveearly individualization capabilityVSAvoidmanufacturing process complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The detachable sticker serves as a flexible intermediary that enables early individualization by carrying unique identification codes from the beginning of manufacturing. This allows each lens to be tracked and monitored individually through data-driven quality control systems without requiring complex permanent coding infrastructure.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The manufacturing process flexibility is enhanced by changing the identification medium from permanent embossing to removable stickers. This parameter change allows the same manufacturing line to handle individualized tracking of each lens while maintaining simplicity through the use of standard adhesive sticker application processes.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12619101B2Method for producing a semi-finished spectacle lens and semi-finished spectacle lens
Publication Date: 2026.05.05 CARL ZEISS VISION INTERNATIONAL GMBH
  • US12619101B2 patent drawing
  • US12619101B2 patent drawing
  • US12619101B2 patent drawing

AI summary

A method for producing a semi-finished spectacle lens and a semi-finished spectacle lens includes identifying the semi-finished spectacle lens by applying a removable sticker having a unique code to the semi-finished spectacle lens. The semi-finished spectacle lens has an embossed code that is engraved into the semi-finished spectacle lens. The sticker is applied to at least partially cover the embossed code. The sticker can be applied directly onto the semi-finished spectacle lens early in the manufacturing process, for example immediately after molding or injection molding. The sticker can also be applied to the semi-finished spectacle lens before further surface treatment is carried out.