Microscope Illumination Intensity Control for Bright-Field and Dark-Field Imaging
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Solution Overview
Problem
Conventional microscope systems face challenges in simultaneously achieving optimal illumination intensity for both bright-field and dark-field observations, particularly when switching between or using both illumination methods, which can result in suboptimal image quality, especially for specimens with low contrast or concavo-convex shapes.
Innovation Solution
A microscope system equipped with both bright-field and dark-field illumination units, along with an illumination intensity control unit that adjusts the intensity of one illumination based on the exposure times of the other, ensuring appropriate illumination for simultaneous bright-field and dark-field imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both bright-field and dark-field illumination systems are used simultaneously, then observation capability for different specimen types is improved, but illumination intensity control becomes complex and image quality deteriorates due to suboptimal intensity settings
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the illumination intensity parameters of both bright-field and dark-field illumination systems based on the selected observation mode. The control unit modifies the intensity parameters according to predetermined relationships, ensuring optimal illumination conditions for each mode while maintaining the ability to switch between modes, thus resolving the contradiction between versatility and image quality.
2Measurement precision
If illumination intensity is increased for dark-field observation, then contrast for low-contrast specimens is improved, but exposure time must be extended resulting in reduced productivity
Solution Approach 1:
The patent changes the illumination intensity parameter for dark-field observation to an optimized value that provides sufficient contrast for low-contrast specimens. By pre-determining the relationship between bright-field and dark-field intensities, the system achieves adequate contrast without requiring excessive exposure time extensions, thus balancing measurement precision with productivity.
3Manufacturing precision
If illumination intensity is adjusted manually for each observation mode, then image quality can be optimized, but operation complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent implements self-service by enabling the control unit to automatically adjust the illumination intensity of both bright-field and dark-field systems based on the selected observation mode. The system uses predetermined intensity relationships to autonomously optimize illumination parameters without requiring manual intervention, thereby maintaining image quality while simplifying operation.
Solution Approach 2:
The patent applies feedback by having the control unit receive information about the selected observation mode and automatically adjust illumination intensities accordingly. The system uses the selection signal as feedback to modify the illumination parameters, creating a closed-loop control that optimizes image quality while maintaining ease of operation.
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 allows for the capture of clearer specimen images by automatically adjusting illumination intensity, optimizing image quality when both bright-field and dark-field illumination are applied simultaneously, particularly enhancing observations of specimens with low contrast or complex shapes.
Implementation Method 1
an objective lens that converges observation light from at least the specimen on the stage
Implementation Method 2
a bright-field illumination unit configured to emit bright-field illumination light that is illumination light applied to the specimen for a bright-field observation
Implementation Method 3
a dark-field illumination unit configured to emit dark-field illumination light that is illumination light applied to the specimen for a dark-field observation
Implementation Method 4
an illumination intensity control unit configured to adjust an illumination intensity of at least one of the bright-field illumination light and the dark-field illumination light according to the illumination intensity of the other one
Data Source
AI summary
A microscope system and an illumination intensity adjusting method that can automatically adjust an illumination intensity when a bright-field illumination system and a dark-field illumination system are simultaneously used are provided. The microscope system includes: a stage on which a specimen is placed; an objective lens that converges observation light from at least the specimen S on the stage; a bright-field illumination unit configured to emit bright-field illumination light that is illumination light aperture to the specimen for a bright-field observation; a dark-field illumination unit configured to emit dark-field illumination light that is illumination light aperture to the specimen for a dark-field observation; and an illumination intensity control unit configured to adjust an illumination intensity of at least one of the bright-field illumination light and the dark-field illumination light according to the illumination intensity of the other one.