Endoscopic Light Source Control for Arbitrary Color Tone
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Solution Overview
Problem
Existing endoscopic devices cannot arbitrarily change the color tone of illuminating light according to the observation target or diagnosis situation, limiting their diagnostic capabilities.
Innovation Solution
An endoscopic device equipped with a light source control system that adjusts the light quantity ratio between blue and violet laser light sources, allowing for continuous change in the color tone of illuminating light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single light source with color filtering wheel is used, then the device structure is simplified, but the color tone of illuminating light cannot be arbitrarily changed according to observation target or diagnosis situation
Solution Approach 1:
The single light source is segmented into multiple independent laser light sources (blue laser, violet laser, green laser) with different wavelength characteristics. Each light source can be independently controlled to produce specific color tones, enabling arbitrary color adjustment while maintaining a modular and manageable system structure.
Solution Approach 2:
The light source control system dynamically adjusts the light quantity ratio between different laser light sources based on observation magnifying power and diagnosis situations. This dynamic control enables real-time color tone optimization without requiring physical reconfiguration of the optical system.
2Measurement precision
If white light is used for general observation, then the observation field is comprehensive, but the lesion identification capability is insufficient for specific diagnosis situations
Solution Approach 1:
Different wavelength regions of light are selectively applied to different observation needs: blue light (405-480nm) for surface blood vessel observation, green light (480-560nm) for general mucosal observation, and violet light (380-450nm) for high-magnification lesion detail observation. This local optimization of light properties enhances diagnostic precision for specific tissue structures.
Solution Approach 2:
The light source control system changes the wavelength parameter by adjusting the light quantity ratio between different laser light sources according to observation magnifying power. This parameter optimization enables the system to adapt to different diagnosis situations, improving lesion identification accuracy while maintaining comprehensive observation capability.
3Reliability
If multiple light sources with different wavelengths are used, then the color tone can be optimized for different observation targets, but the device structure becomes more complex
Solution Approach 1:
The light source control system serves multiple functions: it controls the light quantity ratio between different laser light sources, adjusts color tone according to observation magnifying power, and optimizes illumination for different diagnosis situations. This multi-functionality reduces the need for separate control systems for each light source, thereby managing system complexity while enhancing diagnostic reliability.
Solution Approach 2:
The system uses feedback from the observation magnifying power setting and diagnosis situation to automatically adjust the light quantity ratio between different laser light sources. This feedback mechanism ensures optimal color tone and illumination conditions for reliable diagnosis without requiring manual intervention or complex mechanical adjustments.
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
Enables the endoscopic device to produce illuminating light with arbitrary color tones, improving diagnostic accuracy by optimizing light settings for different observation targets and diagnosis situations.
Implementation Method 1
radiate blue light to a phosphor, thereby obtaining light having a specific wavelength
Data Source
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AI summary
An endoscopic device comprises: an illuminating unit which emits illuminating light from an endoscope tip portion, and includes a plurality of kinds of light sources different from one another in an emission wavelength; an imaging unit which obtains a pickup image of a region to be observed of a subject radiated with the illuminating light; and the color tone controlling unit which changes a color tone of the illuminating light by changing an output light quantity ratio among the plurality of kinds of light sources.