Single-Sided Security Feature Detection Using Reflector
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional devices for verifying machine-readable security features on documents of value require significant space and active components on both sides of the document, leading to synchronization challenges with transport speed.
Innovation Solution
A device with a sensor system arranged on one side, including a transport device, radiation emitter, sensor, reflector, and evaluation unit, which enables secure automatic sensing of security features by irradiating and sensing the document with radiation and using a reflector to direct radiation to the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If active components are arranged on both sides of the document to check security features, then detection capability is improved, but device complexity and space requirements increase
Solution Approach 1:
A reflector is introduced as an intermediary component to redirect radiation from the single-sided sensor system. The reflector enables the sensor to detect radiation that has passed through the document and been reflected back, effectively creating a dual-sided detection capability without requiring components on both sides of the document.
2Reliability
If active components are arranged on both sides of the document, then security feature verification is improved, but space requirements increase
Solution Approach 1:
The radiation emitter and sensor are positioned on the same side of the document, merging their locations. Combined with the reflector, this single-sided arrangement achieves the security verification function that would traditionally require separate components on both sides, thereby reducing the device's spatial footprint.
3Measurement precision
If components are arranged on both sides of the document, then detection accuracy is improved, but synchronization difficulty increases
Solution Approach 1:
The sensor and emitter are extracted from the conventional dual-sided arrangement and repositioned on the same side. This extraction from the traditional configuration, combined with the reflector, eliminates the need for synchronization between opposite sides while maintaining detection accuracy through the reflected radiation path.
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
The solution allows for efficient and secure verification of security features on documents of value, reducing space requirements and simplifying component synchronization, while maintaining effective detection of luminescent, reflective, and transmissive security features.
Implementation Method 1
the printed region is irradiated by way of a radiation source, the specific reflection behaviour, transmission behaviour and/or luminescence behaviour is sensed by a sensor
Implementation Method 2
A device with a sensor system arranged on one side, including a transport device, radiation emitter, sensor, reflector, and evaluation unit, which enables secure automatic sensing of security features by irradiating and sensing the document with radiation and using a reflector to direct radiation to the sensor
Data Source
AI summary
A device for verifying a machine-readable security feature of a document of value, having: a transport device configured to transport the document on a transport plane, a radiation emitter that is arranged on a first flat side and emits radiation in the direction towards the first flat side, a sensor that is arranged on the first flat side and is configured to receive at least part of the luminescent radiation, a reflector arranged and configured on the second flat side-so as to at least partly reflect the luminescent radiation of the security feature of the document of value to the sensor, and an evaluation unit.