Light Source Apparatus Abnormality Detection via Segmented Sensing
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Solution Overview
Problem
Conventional light source apparatuses for endoscopes face challenges in accurately detecting abnormalities in light-emitting elements and maintaining optimal color balance, particularly due to limitations in light detection and temperature monitoring, which can affect the quality of illumination and image clarity.
Innovation Solution
A light source apparatus that includes a light source, a light source driving section, a light detection section for brightness and temperature monitoring, and a control section to determine abnormal conditions and adjust the light source accordingly, ensuring that the light source operates within predetermined brightness and temperature ranges to maintain optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light detection section is used to detect light quantity for determining light-emitting element lifetime, then the lifetime detection capability is improved, but the ability to distinguish between light source abnormalities and detection section abnormalities deteriorates
Solution Approach 1:
The patent divides the abnormality detection function into two independent detection sections: a light detection section for measuring light quantity and a temperature detection section for measuring temperature. By segmenting the detection functions, the system can independently evaluate each parameter and cross-validate results to accurately identify whether abnormalities originate from the light source or the detection sections.
Solution Approach 2:
The temperature detection section serves as an intermediary indicator to indirectly assess light source health. Since temperature changes correlate with light source degradation, the temperature measurement provides supplementary information that helps distinguish between light source abnormalities and light detection section abnormalities, acting as a mediator in the diagnostic process.
2Ease of operation
If multiple light detection sections are used for color balance adjustment, then color balance control is improved, but the complexity of detecting and diagnosing abnormalities deteriorates
Solution Approach 1:
The patent segments the detection system into specialized components: light detection sections for color balance measurement and a temperature detection section for thermal monitoring. This segmentation allows each component to perform its specific function independently, simplifying the overall diagnostic logic despite having multiple light detection sections for color balance control.
Solution Approach 2:
The temperature detection section serves multiple diagnostic purposes: it monitors light source temperature for lifetime assessment, helps identify abnormal heat generation, and provides a reference for distinguishing between light source and detection section abnormalities. This multi-functionality reduces the need for additional specialized sensors.
3Reliability
If temperature detection is added to distinguish light source abnormalities from detection section abnormalities, then abnormality identification accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges the temperature detection function with the existing light detection system, using the same control section to process both light quantity and temperature data. This integration approach allows abnormality identification to improve through multi-parameter monitoring without significantly increasing overall system complexity, as the control logic handles both detection types within a unified framework.
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
The solution enables effective detection of abnormalities in light-emitting elements and optical sensors, allowing for precise control of light emission to maintain optimal color balance and image quality, thereby enhancing the reliability and performance of the endoscope system.
Implementation Method 1
a light detection section that detects brightness of the light emitted from the light source
Implementation Method 2
a temperature detection section that detects a temperature of the light source
Data Source
AI summary
A light source apparatus includes: a light source; a light source driving section; a light detection section; a temperature detection section; and a control section being configured to, when determining that detected brightness is outside a range of brightness set for detecting abnormality in the light source or the light detection section and detected temperature is within a range of temperature set for detecting the abnormality in the light source or the light detection section, cause the light source driving section to perform driving of the light source for a case of abnormality in the light detection section, and when determining that the detected brightness is outside the range of brightness and the detected temperature is outside the range of temperature, cause the light source driving section to perform driving of the light source for a case of abnormality in the light source.