Micro Wideband Spectroscopic Analysis Device Merging Fabry-Perot and Grating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current spectroscopic techniques, such as FTIR, grating-based, and Fabry-Pérot spectroscopies, are fundamentally different and cannot be combined, limiting their resolving power and applicability in molecular spectroscopy, particularly in achieving high-resolution analysis across a wide spectral range.
Innovation Solution
A Micro Wideband Spectroscopic Analysis Device (MWSAD) is developed, integrating diffractive focusing elements like Fresnel lenses/Zone plates with tunable lenses and actuators, enabling fine and wideband tunability, and combining with a Fabry-Perot interferometer for high-resolution spectral analysis from UV to far infrared.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If FTIR spectroscopy uses an interferometer with a moving mirror, then spectral analysis can be performed, but the resolving power is lower compared to grating-based methods
Solution Approach 1:
The patent combines a Fabry-Perot interferometer with a grating-based spectral analysis device into a unified system. The Fabry-Perot interferometer provides high resolving power for specific wavelength ranges, while the grating-based component handles broader spectral analysis, achieving complementary functionality that resolves the resolving power limitation of standalone FTIR interferometers.
Solution Approach 2:
The integrated system serves multiple spectral analysis functions simultaneously - the Fabry-Perot interferometer handles high-resolution analysis in specific bands while the grating-based device provides broad-spectrum coverage, creating a multi-functional platform that overcomes the single-function limitation of traditional interferometers.
2Measurement precision
If grating-based spectral analysis uses more grooves, then resolving power increases, but the device becomes more complex and specialized for specific wavelength ranges
Solution Approach 1:
The patent creates a universal spectral analysis system where the Fabry-Perot interferometer and grating-based device work together to cover broad spectral ranges. The interferometer handles high-resolution analysis in specific bands while the grating component provides broad-spectrum coverage, achieving both high resolving power and wide adaptability simultaneously.
Solution Approach 2:
The system dynamically switches between or combines the operational modes of the Fabry-Perot interferometer and grating-based device depending on the spectral range and resolution requirements, allowing the system to adapt its configuration for different measurement conditions rather than being fixed for a single wavelength range.
3Reliability
If different spectroscopic techniques (FTIR, grating-based, Fabry-Pérot) are used separately, then each can be optimized for its specific function, but they cannot be combined due to fundamental operational differences
Solution Approach 1:
The patent successfully merges Fabry-Perot interferometry with grating-based spectral analysis into a single integrated device. The Fabry-Perot component provides high-resolution interference patterns while the grating-based component disperses light across a broad spectrum, and their combined output enables comprehensive spectroscopic analysis that leverages the strengths of both techniques.
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 MWSAD provides a unified platform for performing various molecular spectroscopies with high resolving power, overcoming the limitations of existing techniques by allowing simultaneous analysis of multiple spectral components and reducing noise, thus enhancing accuracy and versatility in spectroscopic applications.
Implementation Method 1
The movable light opening may be designed to have a diameter or width approaching the diffraction limit of the quasi chromatic focusing element configured to perform high resolution spectroscopic analysis
Implementation Method 2
The quasi chromatic focusing element may include at least one of a Fresnel Lens, a Fresnel Zone Plate
Implementation Method 3
The sequential optical device may comprise at least one of a photosensor, collimating optics, and a Fabry-Perot interferometer device
Implementation Method 4
The movable or tunable lens may include at least one of wideband transparent windows, wideband transparent conductive electrodes, a wideband transparent convex lens, and a wideband transparent liquid crystal
Implementation Method 5
a wideband transparent liquid crystal, wideband liquid materials, wideband liquid fluids, a tunable diffractive focusing element
Implementation Method 6
a collimating lens configured to collimate the at least a portion of the transmitted light, the collimating lens further configured to forward the collimated at least a portion of the transmitted light to a spectral analyzer
Implementation Method 7
a tunable spatial notch filter configured to enable a spectral band to be transmitted from the at least a portion of the transmitted light, which may also remove scattering noise
Implementation Method 8
The sequential optical device may comprise at least one of a photosensor, collimating optics, and a Fabry-Perot interferometer device
Data Source
AI summary
According to some embodiments, a Micro Wideband Spectroscopic Analysis Device (MWSAD) is designed to operate from the visible to the far infrared. The MWSAD is the first unified platform to implement nearly all kind of molecular spectroscopy. This design is based on combining/integrating Diffractive Focusing Element (DFE) such as Fresnel lens/Zone plate with wide and finite range tuning devices. The wide range tuning devices are tunable lenses and/or a long stroke linear motor. The finite tuning devices are micro pinhole controlled by MEMS/PZT actuator. The MEMS/PZT actuator is used for finite tuning the micro pinhole location across the chromatic focuses of the Fresnel lens/DFE. The long stroke linear motor is used for wide range tuning the pinhole location across the chromatics focuses. The tunable lens is used for wideband tuning the chromatics focuses locations within the micro pinhole.