Biometric Device Light Collection Matrix for Precision

Solution Overview

Problem

Existing biometric devices face challenges in achieving precise spectroscopic measurements from a wide area on a surface of an organism due to environmental light interference and restrictive device configurations, often requiring large distances or extensive light-reception units.

Innovation Solution

A biometric device comprising a light source unit, a spatially-integral light-collection unit, and a light-reception unit, where the light-collection unit is divided to collect output light from sub-regions, allowing for flexible arrangement and high precision without the need for large distances or large-size light-reception units.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a large distance is set from the surface of the organism to the light-reception unit to receive light from a wide area, then the light collection area is improved, but measurement precision deteriorates due to environmental light interference

Engineering Contradiction:

Improvelight collection areaVSAvoidmeasurement precision

Core Design Contradiction:

Area of stationary objectVSMeasurement precision

Solution Approach 1:

The light-reception unit is divided into multiple light-reception elements arranged in a matrix. This segmentation allows the system to collect light from a wide area while maintaining precision by processing signals from individual elements and synthesizing the overall measurement, thereby reducing environmental light interference through spatial discrimination.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from a single-point light reception to a two-dimensional matrix arrangement of light-reception elements. This dimensional expansion enables simultaneous collection of light from multiple spatial positions, achieving wide-area light collection while maintaining measurement precision through the structured array configuration.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If a large-size light-reception device is used to receive light from a wide area, then the light collection area is improved, but device complexity and arrangement flexibility worsen

Engineering Contradiction:

Improvelight collection areaVSAvoiddevice configuration

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The light-reception unit is divided into multiple light-reception elements arranged in a matrix. This segmentation allows the system to collect light from a wide area while maintaining precision by processing signals from individual elements and synthesizing the overall measurement, thereby reducing environmental light interference through spatial discrimination.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from a single-point light reception to a two-dimensional matrix arrangement of light-reception elements. This dimensional expansion enables simultaneous collection of light from multiple spatial positions, achieving wide-area light collection while maintaining measurement precision through the structured array configuration.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Area of stationary object

If a large-size light-reception device is used to receive light from a wide area, then the light collection area is improved, but arrangement flexibility worsens

Engineering Contradiction:

Improvelight collection areaVSAvoidarrangement flexibility

Core Design Contradiction:

Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The light-reception unit is divided into multiple light-reception elements arranged in a matrix. This segmentation allows the system to collect light from a wide area while maintaining precision by processing signals from individual elements and synthesizing the overall measurement, thereby reducing environmental light interference through spatial discrimination.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent transitions from a single-point light reception to a two-dimensional matrix arrangement of light-reception elements. This dimensional expansion enables simultaneous collection of light from multiple spatial positions, achieving wide-area light collection while maintaining measurement precision through the structured array configuration.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10052024B2Biometric device, biometric method, program, and recording medium

Publication Date: 2018.08.21 SONY GROUP CORP

AI summary

Provided is a biometric device which may include a light source unit configured to irradiate an organism with inspection light, a light-collection unit arranged facing a region on a surface of the organism and configured to spatially-integrally collect output light emitted from the region in accordance with the inspection light, and a light-reception unit configured to receive the collected output light.