Gas Analyzer Reference Light Beam Expansion
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Solution Overview
Problem
Existing gas analyzers face challenges in maintaining stable reference light reception when the beam position of the optical emitter changes, which affects the accuracy of detecting the wavelength position of the absorption spectrum peak, especially during low-concentration measurements.
Innovation Solution
Incorporating an optical component, such as a plano-convex lens, between the splitting unit and the reference unit to expand the beam diameter of the reference light, ensuring stable reference light reception at the second optical receiver even when the beam position of the optical emitter changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the beam position of the optical emitter changes, then the reference light reception becomes unstable, but maintaining a fixed beam position reduces adaptability to alignment variations
Solution Approach 1:
The patent changes the physical parameter of the reference light beam by expanding its diameter using an optical component (such as a lens). This parameter change allows the beam to maintain stable reception at the optical receiver even when the emitter's position shifts, as the larger beam diameter provides a margin of alignment tolerance.
Solution Approach 2:
The patent introduces an optical component (lens or similar element) as an intermediary between the optical emitter and the optical receiver. This intermediary element actively shapes and expands the reference light beam, mediating the transmission to ensure stable reception despite position variations in the emitter.
2Area of stationary object
If the beam diameter of reference light is small, then the optical system is compact, but the reception becomes sensitive to beam position changes
Solution Approach 1:
The patent explicitly changes the beam diameter parameter by introducing an optical component that expands the reference light beam. This parameter transformation from a small diameter to a larger diameter directly addresses the sensitivity issue, as the expanded beam maintains reliable reception even with position variations.
3Device complexity
If no optical component is used to expand the beam, then the device complexity is low, but the measurement precision deteriorates due to unstable reference light reception
Solution Approach 1:
The patent introduces an optical component to expand the reference light beam diameter, which improves the stability of reference light reception at the optical receiver. This enhanced stability directly improves the precision of wavelength position detection in the absorption spectrum, particularly for low-concentration measurements.
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 resistance to changes in the beam position, allowing for accurate detection of the wavelength position of the absorption spectrum peak, improving measurement accuracy and reliability.
Implementation Method 1
an optical component disposed between the splitting unit and the region including the gas. The optical component is configured to expand a beam diameter of the reference light
Data Source
AI summary
A gas analyzer includes an optical emitter that irradiates measurement light into a measurement region including a measured-gas, a first optical receiver that receives the measurement light passing through the measurement region, a splitting unit between the optical emitter and the measurement region that splits off a portion of the measurement light irradiated from the optical emitter to yield reference light, a reference unit, and an optical component. The reference unit holds a gas containing a measurement target component identical with the measured-gas but at a known concentration and a second optical receiver that receives the reference light passing through the region including the gas. The optical component is disposed between the splitting unit and the region and expands the beam diameter of the reference light to be larger at the second optical receiver than the receiving diameter of the second optical receiver.