Multispectral Sensor Window for Compact Biometric and Health Sensing
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Solution Overview
Problem
Incorporating multiple discrete sensor devices in user devices leads to increased cost, size, power consumption, and network resource utilization, while connecting to external peripherals results in additional costs and network traffic.
Innovation Solution
A user device incorporating a multispectral sensor device with a multispectral filter and sensor element array that performs biometric authentication and health parameter monitoring functionalities, utilizing subcutaneous spectroscopic measurements for improved accuracy and reduced resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple discrete sensor devices are incorporated in user devices, then sensing functionalities are provided, but device size, cost, and resource consumption increase
Solution Approach 1:
The patent combines multiple discrete sensor devices into a single integrated sensor device that includes a sensor element array with multiple sensor elements. Each sensor element is configured to sense different parameters (such as different wavelengths of light), allowing the single integrated device to perform multiple sensing functionalities that previously required separate devices, thereby reducing device size and complexity.
Solution Approach 2:
The sensor element array is designed with multiple sensor elements that can detect various physical quantities (e.g., different wavelengths, intensities, or types of light). This multi-functional design allows a single sensor device to replace multiple specialized sensors, providing versatile sensing capabilities while reducing the overall device footprint and resource consumption.
2Adaptability or versatility
If multiple discrete sensor devices are incorporated in user devices, then sensing functionalities are provided, but manufacturing cost increases
Solution Approach 1:
The patent integrates multiple sensor elements into a single sensor device structure, reducing the total component count and assembly complexity. This consolidation lowers manufacturing costs by eliminating the need to produce, test, and assemble multiple separate sensor devices, while still providing comprehensive sensing functionalities through the multi-element array.
3Adaptability or versatility
If multiple discrete sensor devices are incorporated in user devices, then sensing functionalities are provided, but power consumption increases
Solution Approach 1:
The integrated sensor device shares common support structures, signal processing circuits, and control logic across all sensor elements. This shared infrastructure reduces redundant power consumption that would occur in multiple discrete devices, as components like readout circuits, amplifiers, and data processing units can be consolidated and operated more efficiently in a single integrated system.
4Adaptability or versatility
If external peripherals are connected for sensing, then sensing functionalities are provided, but network traffic and cost increase
Solution Approach 1:
The patent extracts the sensing functionality from external peripherals and integrates it directly into the user device. By incorporating the sensor element array within the device itself, the system eliminates the need for continuous communication with external sensors, thereby reducing network traffic and associated costs while maintaining full sensing capabilities.
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 multispectral sensor device reduces device size, cost, and resource consumption while enhancing biometric authentication accuracy by using subcutaneous measurements, distinguishing between living tissue and artificial imprints, and providing health monitoring capabilities.
Implementation Method 1
Each interface between two adjacent layers of the set of layers may be associated with a critical angle. The critical angle may be an angle of incidence above which total internal reflection occurs at the interface between the two adjacent layers.
Implementation Method 2
a sensor element to receive light in the sensing spectral range and provide a plurality of sensing functionalities based on at least one measurement of the light in the sensing spectral range
Data Source
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AI summary
A device may include a sensor window. The sensor window may include a substrate. The sensor window may include a set of layers disposed onto the substrate. The set of layers may include a first subset of layers of a first refractive index and a second set of layers of a second refractive index different from the first refractive index. The set of layers may be associated with a threshold transmissivity in a sensing spectral range, and may be configured to a particular color in a visible spectral range and associated with a threshold opacity in the visible spectral range. The device may include a spectral sensor device aligned to the sensor window and including at least one sensor element to receive light in the sensing spectral range and provide a plurality of sensing functionalities based on at least one measurement of the light in the sensing spectral range.