Dual Verification Lenses for Multipage Security Documents

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Solution Overview

Problem

Security documents with hidden information revealed by decoding lenses are ineffective if the scrutinizing person does not have time to view all pages, as the security features are not accessible from every page perspective.

Innovation Solution

A multipage security document design featuring a see-through portion with two adjacent verification lenses, allowing hidden information to be revealed from either side of the window by placing the document at different page spreads, utilizing lenticular lenses with distinct orientations and optimal distances for decoding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single decoding lens is placed in a see-through portion, then hidden information can be revealed when viewing from one side, but the security feature becomes inaccessible when viewing from the opposite side

Engineering Contradiction:

Improvesecurity feature accessibilityVSAvoidviewing side flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent divides the single verification function into two separate verification lenses positioned on opposite sides of the see-through portion. Each lens is dedicated to revealing hidden information when viewing from its respective side, ensuring that security verification is accessible regardless of which side the document is viewed from.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The see-through portion is designed to serve multiple functions by incorporating two verification lenses that work together to provide security verification from both sides of the document. This multi-functional design ensures that the security feature remains accessible and effective regardless of the viewing orientation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If scrutinizing persons view only data pages for quick identification, then processing speed increases, but security features on other pages remain unviewed and potentially compromised

Engineering Contradiction:

Improveprocessing speedVSAvoidsecurity verification

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent places verification lenses and hidden information on data pages that are viewed first during quick scrutiny. By preparing the security features in advance on these prominently viewed pages, the system enables both rapid processing and effective security verification without requiring the scrutinizer to examine every page of the document.

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Ensures that hidden information is accessible regardless of the document's orientation, enhancing security by ensuring that valuable security features are visible even when the document is viewed from the data page, thereby preventing the document's authenticity from being compromised.

Implementation Method 1

a first verification lens located in a see-through portion and corresponding to a first verification feature... the first verification lens is a decoding lens, the first verification feature is a first hidden information located in a first image printed on the fourth page such that when the see-through portion is placed above the first image, the first verification feature is revealed by the first verification lens

Methodology Applied

Scientific EffectLens decoding: Lens

Implementation Method 2

a second verification lens collocated with the first verification lens as an adjacent layer... the second verification lens is a decoding lens, the second verification feature is a second hidden information located in a second image located on the first page such that when the see-through portion is placed above the second image, the second hidden information is revealed by the second verification lenses

Methodology Applied

Scientific EffectLens decoding: Lens

Implementation Method 3

the second verification feature is a moiré base layer located in the second image such that when the see-through portion is placed above the second image, the second verification feature is magnified through moiré magnification produced by the second verification lens

Methodology Applied

Scientific EffectMoiré magnification: Moiré Effect

Data Source

PatentUS12122179B2Security document with double verification lenses

Publication Date: 2024.10.22 THALES DIS FRANCE SA

AI summary

A multipage security document has a first verification lens located in a see-through portion and corresponding to a first verification feature and a second verification lens collocated with the first verification lens as an adjacent layer to the first verification lens in the see-through portion and corresponding to a second verification feature. The multipage security document can contain a first sheet and a second sheet connected along one side to the first sheet such that the second sheet may be placed against the first sheet, the second sheet having a see-through portion. Other embodiments are disclosed.