Endoscope Light Intensity Control via Movable Lens System
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Solution Overview
Problem
Existing endoscope systems face challenges in adjusting the amount of illuminating light effectively across different wavelength bands to achieve optimal brightness and image quality, particularly in varying medical imaging scenarios.
Innovation Solution
The endoscope system incorporates a light source generating light of multiple wavelength bands, a lens system with adjustable distance between lenses to control light intensity distribution, and a control mechanism to set a predetermined ratio of light amounts for each wavelength band, ensuring optimal illumination and image brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single light source is used to illuminate the subject, then the device complexity is reduced, but the ability to adjust light intensity distribution across different wavelength bands is insufficient
Solution Approach 1:
The light source is divided into multiple independent wavelength band sources (first light source and second light source). Each light source can be controlled separately to emit light of specific wavelength bands, enabling independent adjustment of light intensity for each wavelength band while maintaining overall system functionality.
Solution Approach 2:
The optical system includes movable components (first optical system and second optical system) that can be positioned at different locations along the optical axis. This dynamic positioning capability allows real-time adjustment of light intensity distribution by changing the relative positions of optical components, providing adaptability without increasing device complexity.
2Measurement precision
If multiple optical systems are added to control light intensity ratio, then the light intensity adjustment precision is improved, but the device complexity increases
Solution Approach 1:
Multiple optical systems (first optical system and second optical system) are combined into a single integrated optical path. These optical systems work together to control the light intensity distribution, achieving precise control of the light intensity ratio between different wavelength bands while sharing common structural elements and reducing overall device complexity.
Solution Approach 2:
The optical systems serve as intermediaries between the light sources and the subject. By positioning these optical systems at specific locations along the optical axis, they mediate the light transmission process and enable precise control of light intensity distribution without requiring direct modification of the light sources themselves.
3Adaptability or versatility
If the light intensity of each wavelength band is adjusted independently, then the adaptability to different imaging scenarios is improved, but the control system complexity increases
Solution Approach 1:
The optical system is designed with universal components that can serve multiple functions. The same optical systems are used for both light transmission and intensity control across different wavelength bands. This multi-functionality enables the system to adapt to various imaging scenarios without requiring separate control mechanisms for each wavelength band.
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 solution allows for precise adjustment of illuminating light across different wavelength bands, enhancing image quality and brightness, and enabling effective illumination of medical subjects with improved light efficiency and ratio control.
Implementation Method 1
a first lens section that receives, as incident light, the light of the first wavelength band and the light of the second wavelength band generated by the light source section and emits the light with characteristics of different spatial intensity distributions in accordance with wavelengths
Implementation Method 2
a second lens section that is provided opposite to the first lens section, receives, as incident light, at least part of the light emitted from the first lens section and causes the received light to enter the proximal end of the optical transmission section
Data Source
AI summary
An endoscope system includes an optical transmission section that is provided in an endoscope inserted into an interior of a subject and transmits illuminating light to a distal end, a light source section that generates light, a first lens section that receives the light, from the light source section and emits the light with characteristics of different spatial intensity distributions, a second lens section that causes the light emitted from the first lens section to enter the proximal end of the optical transmission section, a distance adjusting section that can adjust a distance, and a control section that controls the distance adjusting section that adjusts the distance between the first lens section and the second lens section so that amounts of the light of a first and second wavelength bands have a predetermined ratio of amount of light.