Clustered Wavelength Detection Modules for Low-Loss Spectral Separation
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Solution Overview
Problem
Existing light detection systems experience significant light loss and poor signal quality due to multiple reflections of light, leading to a low signal-to-noise ratio when generating distinct spectral ranges.
Innovation Solution
The implementation of clustered wavelength division light detection systems with three or more wavelength separators that minimize light loss by generating multiple spectral ranges with minimal reflections, using prisms or diffraction gratings to separate light into predetermined spectral ranges and convey it to photodetectors with minimal sub-spectral ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple reflections are used to generate distinct spectral ranges, then the spectral separation is achieved, but light loss increases and signal quality deteriorates
Solution Approach 1:
The detection system is divided into multiple independent detection modules, each equipped with wavelength separators (prisms or diffraction gratings) that segment the light into distinct spectral ranges. This segmentation allows each module to detect specific wavelength ranges directly without requiring multiple reflections, thereby achieving spectral separation while minimizing light loss.
2Measurement precision
If multiple reflections are used to generate distinct spectral ranges, then the spectral separation is achieved, but the signal-to-noise ratio decreases
Solution Approach 1:
The system segments the detection function across multiple independent modules, each with its own wavelength separator and photodetector array. This allows direct spectral separation in each module without multiple reflections, maintaining high signal-to-noise ratio while achieving comprehensive spectral coverage through the combination of all modules.
3Loss of energy
If the surface area of the detector is increased to raise light collection, then the light collection efficiency is improved, but the device complexity increases
Solution Approach 1:
Instead of using a single large-area detector, the system segments the detection function across multiple modules with smaller photodetector arrays. Each module is optically coupled to capture specific spectral ranges, achieving high light collection efficiency for each wavelength band while keeping individual detector areas manageable and overall system complexity reduced through modular design.
4Measurement precision
If more wavelength separators are added to generate more spectral ranges, then the spectral resolution is improved, but the light loss from reflections increases
Solution Approach 1:
The system uses multiple wavelength separators in separate detection modules, where each separator divides the light spectrum into distinct ranges that are directly detected by photodetectors in that module. This segmentation approach achieves high spectral resolution across the full spectrum while minimizing light loss, as each wavelength separator handles only a portion of the spectral division rather than requiring multiple sequential reflections.
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
These systems achieve light loss of 20% or less and generate 20 or more distinct spectral ranges with improved signal quality, maintaining minimal focal radius changes and reducing light loss to 1 mW/cm² or less, enhancing the detection process.
Implementation Method 1
The wavelength separator is a prism or a diffraction grating
Implementation Method 2
The wavelength separator is a prism or a diffraction grating
Implementation Method 3
one or more light detection modules in optical communication with each wavelength separator having a plurality of photodetectors
Data Source
AI summary
Systems for detecting light (e.g., in a flow stream) are described. Light detection systems according to certain embodiments include a wavelength separator configured to generate first, second and third predetermined spectral ranges of light from a light source and first, second and third light detection modules configured to receive each of the first, second and third predetermined spectral ranges of light, the light detection modules having a plurality of photodetectors and an optical component that conveys light having a predetermined sub-spectral range to the photodetectors. Systems and methods for measuring light emitted by a sample (e.g., in a flow stream) and kits having three or more wavelength separators, a plurality of photodetectors and an optical component are also provided.