Coherent Light Source Array Spectrometer Without Mechanical Interferometers
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Solution Overview
Problem
Existing Fourier transform spectrometers are limited by mechanical components that increase volume, cost, and cause signal fluctuations, affecting portability and accuracy.
Innovation Solution
A Fourier transform spectrometer using a coherent light source array replaces the interferometer and mechanical components, controlling optical path differences through a circuit to stabilize the system and reduce volume and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical components are used to change optical path difference, then spectrum measurement function is achieved, but volume increases and portability is limited
Solution Approach 1:
The patent replaces the traditional mechanical interferometer (including fixed mirror, moving mirror, and precision mechanical components) with a coherent light source array. The optical path difference is controlled through circuit control rather than mechanical movement, eliminating the need for precision mechanical components and reducing the overall instrument volume while maintaining the spectrum measurement function.
Solution Approach 2:
The patent extracts and removes the mechanical components (fixed mirror, moving mirror, precision-controlled mechanisms) from the traditional Fourier transform spectrometer structure. By using a coherent light source array with circuit control, the mechanical subsystem is completely eliminated, achieving volume reduction while preserving the core spectral analysis capability.
2Measurement precision
If precision mechanical components are used to ensure accurate mirror movement, then measurement accuracy is improved, but cost increases
Solution Approach 1:
The patent replaces precision mechanical components (which are expensive to manufacture and maintain) with a coherent light source array controlled by circuits. This substitution eliminates the need for precision-machined mirrors and mechanical drive systems, significantly reducing manufacturing costs while maintaining or improving measurement accuracy through electronic control.
Solution Approach 2:
The patent changes the control parameter from mechanical position (mirror displacement) to electrical control (circuit control of light source array). This parameter change allows for more precise and cost-effective control of optical path difference, improving measurement accuracy while reducing manufacturing complexity and cost.
3Reliability
If traditional interferometer structure is used, then spectral analysis is achieved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the essential function of the interferometer (creating optical path difference for spectral analysis) and removes the complex mechanical structure. By using a coherent light source array with independently controllable elements, the patent achieves interferometric functionality without the complex assembly of mirrors, beamsplitters, and precision mechanical components.
Solution Approach 2:
The patent substitutes the mechanical interferometer system with an electronically controlled coherent light source array. This replacement simplifies the device structure by eliminating multiple mechanical components (fixed mirror, moving mirror, beamsplitters, precision stages) while maintaining spectral analysis capability through circuit control of the light source elements.
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
The coherent light source array stabilizes the system, improves repeatability, reduces volume and cost, and enhances portability.
Implementation Method 1
a light source, aperture, beam splitter, fixed mirror, precision-controlled moving mirror, sample chamber, detector, various reflectors, control circuit boards and amplifier circuits. The core component of a Fourier transform spectrometer is an interferometer.
Implementation Method 2
The movement of the moving mirror changes the optical path between the moving mirror and the fixed mirror. The intensity is the highest when the movement of the moving mirror makes the signal received by the detector change continuously with the optical path difference, that is, the interferogram is obtained
Data Source
AI summary
The present invention relates to a Fourier transform spectrometer applicable in an array of coherent light sources, comprising: a light source, a light transmission device, a control circuit, a detector, an amplifying circuit, and a computer. The control circuit is electrically connected to the light transmission device for control the on-off of light in the light transmission device. The amplifying circuit is connected with the detector for recording and amplifying the photoelectric signal obtained by the detector. The computer is connected with the amplifying circuit. The computer is equipped with a spectral analysis software is used to perform Fourier transform. The Fourier transform spectrometer based on the coherent light source array further includes a coherent light source array. The light transmission device is used to transmit the light emitted by the light source to the coherent light source array.