Mobile Optical Scanner for Fingerprint and Document Capture
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Solution Overview
Problem
Existing solutions fail to capture high-contrast images of multiple fingerprints and documents using a single portable optical scanner, which is essential for flexible and location-independent personal identification, particularly in border control and aviation security scenarios.
Innovation Solution
A mobile image capture device that uses a direct optical scanner with a large sensor layer, allowing simultaneous recording of multiple fingers and documents on the same support surface, wirelessly connected to another electronic device for image processing and evaluation, eliminating the need for prisms, imaging optics, and illumination optics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a stationary device with separate fingerprint and document readers is used, then identification accuracy is improved, but portability and operational flexibility deteriorate
Solution Approach 1:
The patent combines fingerprint scanning, document scanning, and image capture functions into a single mobile device with a unified support surface. This integration maintains identification accuracy while enabling portability and flexible operation in various locations such as border crossings and aviation security checkpoints.
Solution Approach 2:
The mobile device performs multiple functions including fingerprint acquisition, document scanning, and general image capture using a single support surface and sensor system. This multi-functionality eliminates the need for separate stationary devices while maintaining operational effectiveness across different identification scenarios.
2Adaptability or versatility
If a mobile device with multiple separate scanners is used, then functionality is improved, but device complexity and size increase
Solution Approach 1:
The patent merges multiple scanning functions (fingerprint, document, image) into a single support surface with integrated sensors. This approach maintains comprehensive functionality while significantly reducing device complexity and size compared to using multiple separate scanners, enabling the device to be handheld and mobile.
Solution Approach 2:
A single support surface serves multiple purposes: capturing fingerprints, scanning documents, and taking general images. This universal design achieves high adaptability without increasing device complexity, as the same hardware components perform multiple functions based on how they are used.
3Measurement precision
If conventional optical scanning with prisms and imaging optics is used, then image quality is improved, but device portability and simplicity deteriorate
Solution Approach 1:
The patent extracts and eliminates complex optical components such as prisms, imaging optics, and illumination optics from the scanning system. By using direct contact sensors on the support surface, the device achieves sufficient image quality for identification purposes while dramatically simplifying the optical path and enabling true portability.
Solution Approach 2:
The patent replaces complex mechanical optical systems with direct sensor contact measurement. Instead of using lenses, mirrors, and prisms to form images, the system uses sensors that directly detect fingerprint patterns, document features, and image data through contact with the support surface, eliminating the need for sophisticated optical train.
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
Enables efficient, high-resolution, and secure recording of fingerprints and documents without the need for stationary checkpoints, allowing for ten-finger recording, document scanning, and signature capture within a single, lightweight, and portable device, enhancing security and convenience in various identification scenarios.
Implementation Method 1
A screen with multiple photosensors, each associated with a display pixel, is used. The display pixels emit light radiation that is captured by the photosensors at small scanning angles.
Data Source
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AI summary
The invention relates to an arrangement and method for the optical recording of living skin areas of human autopods and of documents. The object of finding a new method for the flexible, location-independent optical recording of skin areas and documents is solved according to the invention by integrating a layered body (105) consisting of a sensor layer (115) with light-sensitive elements in a regular pixel grid, a transparent protective layer (114) above the sensor layer (115) as a contact surface (104) for skin areas of autopods (112) or documents (113), into a mobile image acquisition device (100) with at least one display (103) for user guidance and internal power supply, wherein the layered body (105) is supplemented below the sensor layer (115) by an area-like luminescent layer (116).to emit light in a first angular range to disturb internal total reflection at the support surface (104) when autopods (112) are placed on it, and light in a second angular range to illuminate placed documents (113), a control and data processing unit (117) for preprocessing and reducing recorded image data, and an electronic interface for wireless coupling of the image acquisition device (100) with another electronic device (101, 102; 106) for image data processing for quality assessment and image data management of the recorded image data.