Endoscope Color Tone Correction via Light Intensity Control
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Solution Overview
Problem
Endoscopic devices face challenges in maintaining a consistent color tone of observation images when adjusting the light intensity ratio of illuminating lights with different spectrums, leading to potential inaccuracies in diagnosis.
Innovation Solution
An endoscopic device with an illuminating module, imaging module, light intensity ratio control module, and color tone correcting module that generates and controls multiple light sources with different spectrums, adjusts the light intensity ratio, and corrects the color tone of the observation image to maintain consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light intensity ratio of illuminating light is adjusted to optimize observation, then the observation quality is improved, but the color tone of the observation image changes
Solution Approach 1:
The patent applies color changes by intentionally modifying the color temperature of illuminating light according to observation distance. The light source control module adjusts the color temperature to be lower for distant view imaging and higher for near view imaging, which compensates for the color tone changes caused by light intensity ratio adjustments and maintains consistent color appearance in observation images.
Solution Approach 2:
The patent changes physical parameters of the illuminating light, specifically adjusting both the light intensity ratio and color temperature based on observation distance. The light source control module dynamically modifies these parameters to optimize observation quality while maintaining color consistency through coordinated parameter adjustment.
2Measurement precision
If multiple light sources with different spectrums are used to perform narrow band observation, then the diagnostic accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent applies multi-functionality by designing a light source control module that can control multiple light sources with different spectrums (white light and narrow band light) using a single integrated control system. This module performs multiple functions including adjusting light intensity ratios, controlling color temperature, and coordinating illumination based on observation distance, thereby managing device complexity while maintaining diagnostic accuracy.
3Measurement precision
If the light intensity of narrow band light is increased for near view imaging, then the blood capillary observation is improved, but the color shade of illuminating light changes
Solution Approach 1:
The patent applies color changes by adjusting the color temperature of the illuminating light in response to changes in light intensity ratio. When narrow band light intensity is increased for near view imaging to improve blood capillary observation, the system simultaneously adjusts the color temperature to compensate for color shade changes, maintaining stable color appearance in the observation image.
Data Source
AI summary
An endoscopic device that irradiates a plurality of illuminating lights having different spectrums from each other onto a subject at a front edge of an endoscope inserting module and captures the subject to obtain an observation image, includes an illuminating module that generates the plurality of illuminating lights, an imaging module that captures the subject and outputs an image signal of the observation image, a light intensity ratio control module that controls the illuminating module to irradiate the plurality of illuminating lights onto the subject with a set light intensity ratio by setting the light intensity ratio of the plurality of illuminating lights for every observation image, and a color tone correcting module that corrects the color tone of the image signal so as to obtain the observation image with substantially a same color tone even though the light intensity ratio is changed.