Multicolor Endoscope Light Source Control With Silicon Detection
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Solution Overview
Problem
Existing endoscope light source devices lack the capability to control light emission with high accuracy, particularly in applications requiring precise control of multiple light sources with different wavelengths.
Innovation Solution
A light source device comprising five or more light sources generating different colors, an optical member to direct light into an endoscope's light guide, a silicon-based first light detection element, and a light reducing member, along with a processor to control the light amounts based on detected light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light sources with different wavelengths are used to enhance imaging capabilities, then the versatility and imaging quality are improved, but the control precision and measurement accuracy of light emission are deteriorated
Solution Approach 1:
The patent divides the light detection function into multiple separate detection elements, each responsible for detecting light from a specific wavelength range. This segmentation allows each detector to specialize in a particular wavelength band, improving measurement precision for each individual wavelength while maintaining the ability to handle multiple wavelengths simultaneously through the coordinated work of multiple detectors.
Solution Approach 2:
The patent introduces optical filters as intermediary components between the light sources and detection elements. These filters selectively transmit specific wavelength ranges while blocking others, acting as mediators that enable precise control and measurement of light from different wavelength sources. The filters ensure that each detection element receives only the intended wavelength range, thereby maintaining high measurement precision across multiple light sources.
2Measurement precision
If light detection elements are added to control light emission, then the control precision is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple light detection elements and their associated control functions into an integrated light source device unit. By merging the detection elements, optical filters, and control circuitry into a single integrated device, the system achieves precise control of light emission while minimizing the increase in overall device complexity. The integrated design allows the multiple components to work together as a cohesive unit rather than as separate add-on elements.
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 precise control of light emission from the endoscope, enhancing imaging capabilities, especially in infrared imaging, by accurately managing light levels and wavelengths.
Implementation Method 1
a first light detection element that is composed of silicon and detects a part of the light generated by the specific light source
Implementation Method 2
a light reducing member that reduces light incident on the first light detection element
Data Source
AI summary
A light source device includes: five or more light sources that generate light of different colors; and an optical member that is configured to introduce the light generated by the five or more light sources into a light guide of an endoscope. A specific light source excluding four light sources among the five or more light sources has a wavelength of the generated light longer than a wavelength of light generated by the four light sources, and the light source device further includes a first light detection element that includes silicon and detects a part of the light generated by the specific light source, and a light reducing member that reduces light incident on the first light detection element.