Mobile Phone Dark-Field Microscope for Nanoparticle Quantification

The patent extracts only the essential optical components (light source, condenser, objective lens) needed for dark-field microscopy from the complete conventional microscope system. By removing unnecessary complex components while retaining the core functionality, the system achieves nanoparticle quantification accuracy without the full complexity of traditional microscopes.

The patent creates a universal platform that can perform multiple functions: dark-field imaging, nanoparticle quantification, and diagnostic analysis. The simplified optical system is designed to work with various sample types and detection modes, replacing multiple specialized devices with a single multi-functional apparatus that maintains measurement precision across different applications.

The patent removes heavy components from conventional microscopes while extracting and retaining only the essential optical elements needed for dark-field imaging. This selective extraction dramatically reduces system weight while preserving nanoparticle quantification accuracy, enabling portable field deployment.

The patent changes key system parameters including using compact LED light sources instead of traditional illuminators, miniaturized optical components, and integrated mobile device cameras. These parameter changes maintain measurement precision while reducing overall system weight and enabling portability for field settings.

The patent merges the optical components (light source, condenser, objective lens) with a mobile communication device into an integrated system. This combination eliminates the need for separate complex setup procedures for each component, as the mobile device's camera and processing capabilities are directly integrated with the optical train, simplifying operation while maintaining quantification accuracy.

The patent implements self-service features where the system automatically performs focus adjustment, image capture, and initial data processing. The mobile device's built-in processing capabilities handle image analysis and nanoparticle quantification without requiring complex external software or manual intervention, making the system easier to operate while preserving measurement precision.

The patent changes the detection parameter from spectrometry (which measures light intensity at multiple wavelengths) to dark-field imaging (which captures scattered light intensity at a specific angle). This parameter change, combined with using high-sensitivity mobile device cameras and optimized optical geometry, achieves nanoparticle detection sensitivity comparable to or exceeding portable spectrometry while maintaining portability.

The patent replaces the spectrometry detection mechanism with a direct optical imaging approach using the mobile device camera. Instead of using diffraction gratings and photodetector arrays typical of spectrometers, the system uses the camera's sensor to directly capture scattered light patterns, improving both sensitivity and throughput while maintaining the portable form factor.