Infrared Camera Gas Detection Beamsplitter Segmentation

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Solution Overview

Problem

Existing IR camera technologies for gas detection lack advanced imaging capabilities and accuracy in determining material properties and gas presence, as they primarily rely on single detector systems and limited spectral analysis.

Innovation Solution

The use of a beamsplitter in an IR camera to split incoming radiation into two beams with different wavelength spectra, allowing for simultaneous detection by two detectors, which enables advanced imaging functions, improved measurement accuracy, and the determination of material properties and gas presence through comparative image processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a single detector system is used in an IR camera, then the device complexity is reduced, but the measurement precision and spectral analysis capability are limited

Engineering Contradiction:
Improvegas detection accuracyVSAvoiddetector system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The incoming radiation is segmented into different wavelength spectra using a beamsplitter, with each spectrum directed to a separate detector. This allows each detector to specialize in specific wavelength ranges, improving measurement precision for gas detection while maintaining manageable system complexity through functional division

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system transitions from single-dimensional detection to multi-dimensional spectral detection by adding wavelength discrimination capability. The beamsplitter creates multiple detection channels that operate in parallel across different spectral dimensions, enhancing gas detection accuracy without proportionally increasing complexity

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If multiple detectors with different spectral properties are used, then the spectral analysis capability is improved, but the device complexity increases

Engineering Contradiction:
Improvespectral analysis capabilityVSAvoidcamera system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The beamsplitter serves multiple functions simultaneously: it divides the incoming radiation into different wavelength spectra, directs each spectrum to appropriate detectors, and enables the system to detect multiple gases with different absorption spectra. This multi-functionality approach enhances spectral analysis capability while avoiding the need for separate dedicated systems for each function

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The beamsplitter acts as an intermediary component that mediates between the incoming radiation and multiple detectors with different spectral properties. It selectively directs different wavelength ranges to appropriate detectors, enabling versatile spectral analysis while simplifying the overall system architecture compared to direct coupling of multiple detectors to the source

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If a beamsplitter is introduced to split radiation into multiple beams, then the gas detection accuracy is improved, but the device complexity increases

Engineering Contradiction:
Improvegas component detection accuracyVSAvoidoptical system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

Different parts of the optical system are optimized for specific wavelength ranges, with each detector and its associated optical path tailored to detect specific gas absorption spectra. This local optimization of detection capabilities improves gas component detection accuracy while keeping each subsystem relatively simple and manageable

Inventive Principle:
Principle #3Local quality

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 enhances the accuracy of gas detection and material property determination by amplifying the gas component in images and providing detailed spectral analysis, enabling the identification of gases and materials through enhanced spectral differentiation.

Implementation Method 1

a beamsplitter arranged to split the incoming radiation into a first beam comprising a first wavelength spectrum and a second beam comprising a second wavelength spectrum different from the first wavelength spectrum

Methodology Applied
Scientific EffectBeam splitting:

Implementation Method 2

a first IR detector for receiving the first beam and for detecting a first image of the imaged area based on at least a part of the incoming radiation

Methodology Applied
Scientific EffectInfrared detection:

Implementation Method 3

a first IR detector for receiving the first beam and for detecting a first image of the imaged area

Methodology Applied
Scientific EffectPhotoelectric effect: Photoelectric Effect

Implementation Method 4

the gas will influence the radiation in its absorption spectrum

Methodology Applied
Scientific EffectAbsorption spectroscopy: Absorption Spectroscopy

Implementation Method 5

the gas absorption spectrum

Methodology Applied
Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Data Source

PatentUS8803093B2Infrared camera for gas detection
Publication Date: 2014.08.12 FLIR SYST AB
  • US8803093B2 patent drawing
  • US8803093B2 patent drawing
  • US8803093B2 patent drawing

AI summary

An IR camera is disclosed, comprising two IR detectors for detecting a first and a second image of the imaged area. A beamsplitter is operable to split the incoming radiation into a first beam comprising a first wavelength spectrum and a second beam comprising a second wavelength spectrum different from the first wavelength spectrum. The first beam is received at the first IR detector and the second beam is received at the second IR detector. A processor is operable to calculate properties of the imaged area based on the first and the second image in relationship to each other. The information obtained may be used, for example, to detect the presence or identity of a gas or to determine the material properties of an imaged object.