Microparticle Measurement Device Multi-Objective Lens Chromatic Aberration
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Solution Overview
Problem
Existing microparticle measurement devices face challenges in supporting wideband wavelength excitation light due to difficulties in correcting chromatic aberration, particularly in the ultraviolet and infrared regions, limiting their ability to perform multi-color analysis effectively.
Innovation Solution
The use of multiple objective lenses for excitation light irradiation, arranged to oppose each other across the flow path, allows for the detection of scattered light and fluorescence across different wavelength regions, including ultraviolet and visible light, facilitating improved chromatic aberration correction and multi-color analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single objective lens is used for excitation light irradiation across wideband wavelengths, then the device structure is simple, but chromatic aberration cannot be corrected and transmittance decreases at shorter wavelengths
Solution Approach 1:
The patent divides the excitation light irradiation system into multiple objective lenses, each optimized for specific wavelength ranges. This segmentation allows each lens to be designed with appropriate glass materials and structures for its designated wavelength band, thereby correcting chromatic aberration while maintaining overall system functionality.
Solution Approach 2:
The patent employs composite material strategies by selecting different optical glass types for different objective lenses based on their wavelength transmission characteristics. This allows the system to handle ultraviolet, visible, and infrared wavelengths effectively, as each glass type is optimized for specific wavelength ranges.
2Adaptability or versatility
If multiple objective lenses are used for different wavelength regions, then chromatic aberration correction and wavelength coverage improve, but device complexity increases
Solution Approach 1:
The patent designs objective lenses that can serve multiple functions: each lens not only irradiates excitation light but also detects scattered light and fluorescence. This multi-functionality reduces the need for separate detection optics, thereby limiting the increase in device complexity despite using multiple lenses for different wavelength regions.
Solution Approach 2:
The patent utilizes the spatial dimension by arranging multiple objective lenses at different positions and orientations around the flow cell. This spatial arrangement allows simultaneous irradiation and detection from multiple angles, enabling wideband wavelength coverage without proportionally increasing system complexity.
3Ease of manufacture
If optical glass is used for the objective lens, then manufacturing is easier, but transmittance rapidly decreases at wavelengths shorter than 400 nm
Solution Approach 1:
The patent applies local quality by selecting specific optical glass types for different wavelength regions. For ultraviolet wavelengths shorter than 400 nm, specialized glass materials with appropriate transmittance characteristics are chosen, while other regions may use different glass types optimized for their respective wavelength bands.
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 enables more accurate and efficient measurement and sorting of microparticles by reducing chromatic aberration, enhancing the device's ability to handle a broader range of wavelengths and improve detection accuracy.
Implementation Method 1
detecting scattered light emitted from microparticles by excitation light with which the microparticles are irradiated
Implementation Method 2
detect fluorescence and scattered light emitted from each of the microparticles
Data Source
AI summary
To provide a microparticle measurement technology capable of supporting excitation light in a wideband wavelength range.The present technology provides a microparticle measurement device provided with a plurality of objective lenses for excitation light irradiation used for irradiating microparticles flowing through a flow path with excitation light, in which at least one of the objective lenses for excitation light irradiation is used for detecting scattered light emitted from the microparticles by the excitation light with which the microparticles are irradiated through another one of the objective lenses for excitation light irradiation.