Laser Spectroscope Depth Analysis via Substance Library

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Solution Overview

Problem

Existing laser-induced breakdown spectrometers face challenges in interpreting complex spectra and understanding changes in substance composition at different depths within a sample, making it difficult for users to perform effective component analysis.

Innovation Solution

A laser-induced breakdown spectroscope that includes an emitter, a collection head, a detector, a library holding section, a component analysis section, and a display controller, which enables the estimation of constituent elements and substances at different analysis depths, and displays this information in a user-friendly format.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the laser-induced breakdown spectroscope performs component analysis by detecting plasma light spectrum, then element identification and content estimation are achieved, but the spectrum contains many peaks making it difficult for users to interpret and understand substance composition changes

Engineering Contradiction:
Improveelement identification accuracyVSAvoidspectrum interpretation difficulty
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent introduces an analysis unit that acts as an intermediary between the detector and the user. This unit automatically analyzes the spectrum, identifies elements, estimates their contents, and determines substance types, converting the complex spectral data into easily interpretable results without requiring user expertise in spectral analysis

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates a simplified copy or representation of the complex spectral information. Instead of displaying only the raw spectrum with many peaks, the system generates a substance identification result that copies the essential information in an easily understandable format, allowing users to grasp substance composition without interpreting the underlying complex spectrum

Inventive Principle:
Principle #26Copying

2Loss of information

If the laser beam irradiates the analyte multiple times to perform depth analysis, then the change of substance in the depth direction can be estimated, but the device complexity increases

Engineering Contradiction:
Improvedepth composition informationVSAvoidanalysis system complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-storing a substance library containing constituent elements and content information for various substances. This library is prepared in advance to facilitate quick comparison and identification during the analysis process, enabling depth analysis without significantly increasing device complexity

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent segments the analysis process into distinct functional units: an emitter for laser irradiation, a collection head for plasma light collection, a detector for spectrum generation, and an analysis unit for substance identification. This segmentation allows the depth analysis capability to be added as a modular function rather than increasing overall device complexity

Inventive Principle:
Principle #1Segmentation

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

This configuration allows for easy interpretation of component analysis results at various depths, enabling users to understand changes in substance composition without requiring extensive expertise in spectral analysis.

Implementation Method 1

a laser-induced breakdown spectroscope that performs component analysis of an analyte by using laser induced breakdown spectroscopy

Methodology Applied
Scientific EffectLaser-induced breakdown spectroscopy (LIBS): Laser Ablation

Implementation Method 2

a collection head that collects plasma light generated in the analyte by irradiating the analyte with the laser light emitted from the emitter

Methodology Applied
Scientific EffectPlasma light emission: Plasma

Implementation Method 3

a detector that receives the plasma light generated in the analyte and collected by the collection head, and generates a spectrum which is an intensity distribution of the plasma light for each wavelength

Methodology Applied
Scientific EffectSpectral detection: Absorption Spectroscopy

Data Source

PatentUS12313554B2Laser-induced breakdown spectroscope
Publication Date: 2025.05.27 KEYENCE CORP
  • US12313554B2 patent drawing
  • US12313554B2 patent drawing
  • US12313554B2 patent drawing

AI summary

A change in a substance in a depth direction of an analyte is easily estimated. An analysis and observation device includes: a library holding section that holds a substance library in which a substance is associated with a type of an element constituting the substance and a content of the element; and a component analysis section that estimates a type of an element constituting a substance and a content of the element based on a spectrum, and estimates the substance based on estimated characteristics and the substance library. The component analysis section estimates a type of an element constituting a substance, a content of the element, and the substance at each of a plurality of positions having different analysis depths.