Gas Analyzer Optical Alignment with Multi-Axis Adjustment
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Solution Overview
Problem
Conventional gas analyzers face difficulties in easily facilitating the alignment of the optical axis of the light emitting element with the light receiving element.
Innovation Solution
The gas analyzer employs a configuration with independently adjustable optical axes, including a plurality of light emitters and a reflector that allows for angular and positional adjustments along multiple axes, enabling easy alignment of the optical path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional gas analyzer uses a fixed light emitting element position, then the device structure is simple, but the alignment of the optical axis between the light emitting element and light receiving element is difficult
Solution Approach 1:
The holding member is designed to be angularly adjustable around at least two axes that are not parallel to the optical axis, allowing dynamic adjustment of the light emitting element's orientation to facilitate alignment with the light receiving element
Solution Approach 2:
The adjustment mechanism is divided into multiple independent axes of rotation, allowing separate adjustment of different angular parameters to achieve precise alignment
2Measurement precision
If the optical path length in the measurement gas is increased, then the measurement accuracy is improved, but the device structure becomes more complex
Solution Approach 1:
The reflector is mounted separately on the channel wall at a position distant from the light emitter, creating a folded optical path that extends the measurement path length without increasing the linear dimensions of the device
Solution Approach 2:
The reflector and light emitter are integrated into a single measurement system mounted on the channel wall, allowing the light to travel back and forth in the measurement gas and effectively doubling the optical path length
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 measurement accuracy by doubling the optical path length and simplifies the alignment process, allowing for precise measurement of multiple components in the measurement gas.
Implementation Method 1
a laser gas analyzer using Tunable Diode Laser Absorption Spectroscopy (TDLAS)
Implementation Method 2
a reflector configured to reflect the light irradiated by the light emitting element so that the light travels back and forth in the measurement gas
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A gas analyzer (1) that easily facilitates alignment is provided. The gas analyzer (1) is a gas analyzer for measuring a predetermined component in a measurement gas (3) by irradiating light on the measurement gas from a light emitting element (2) and receiving light that passes through the measurement gas. The gas analyzer includes a base member (12) configured to be adjustable in position along at least one axis that is not parallel to the optical axis of the light emitting element, and a holding member (13) configured to hold the light emitting element (2) and to be held to the base member (12) in an angularly adjustable manner around at least one axis that is not parallel to the optical axis.