Endoscope Light Source Power Control for Lamp Life
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Solution Overview
Problem
The light source apparatus for endoscopes experiences a decrease in light emission luminance and stability over time, leading to inefficient power usage and the need for frequent lamp replacements, as existing technologies fail to effectively manage power consumption and prolong lamp life.
Innovation Solution
A light source apparatus with a power supply control system that measures continuous lighting time and adjusts power supply in a stepwise manner from a first upper limit power to a second, lower upper limit power when the continuous lighting time exceeds a predetermined limit, preventing light emission instability and extending lamp life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light source is operated at high power continuously, then the light emission luminance is maintained, but the lamp life decreases and light emission becomes unstable
Solution Approach 1:
The patent applies dynamics by making the power supply to the light source adjustable and variable over time. The power supply portion changes the power level from a first level to a second level based on continuous lighting time, transforming a static power supply system into a dynamic one that adapts to the light source's operational state and extends its life while maintaining illumination quality.
Solution Approach 2:
The patent changes the power supply parameter (power level) from a first power level to a second power level based on continuous lighting time. This parameter change approach allows the system to optimize between light emission luminance and lamp life by adjusting the power level according to the light source's operational duration and characteristics.
2Duration of action of stationary object
If the power supply is reduced to extend lamp life, then the lamp life is prolonged, but the light emission luminance decreases
Solution Approach 1:
The patent changes the power supply parameter dynamically from a first power level to a second power level based on continuous lighting time. This allows the system to extend lamp life by reducing power when appropriate while maintaining sufficient light emission luminance through intelligent power management that adapts to the light source's operational state.
Solution Approach 2:
The patent implements feedback control where the power supply portion continuously monitors the continuous lighting time and adjusts the power level accordingly. This feedback mechanism ensures that power is optimized to extend lamp life while maintaining adequate light emission luminance by responding to the actual operational state of the light source.
3Illumination intensity
If the power is supplied at maximum level, then the light emission luminance is maximized, but the power consumption increases
Solution Approach 1:
The patent changes the power supply parameter from a first power level to a second power level based on continuous lighting time, optimizing the balance between light emission luminance and power consumption. This allows the system to maximize illumination when needed while reducing power consumption during extended operation periods.
Solution Approach 2:
The patent applies dynamics by making the power supply adjustable and variable based on operational time. The power supply portion dynamically transitions from maximum power to reduced power levels, transforming a static high-consumption system into a dynamic one that optimizes power consumption while maintaining adequate light emission luminance.
4Productivity
If the continuous lighting time is extended, then the productivity is improved, but the light emission stability deteriorates
Solution Approach 1:
The patent applies dynamics by making the power supply variable based on continuous lighting time. The power supply portion dynamically adjusts power levels to maintain light emission stability during extended operation, preventing the degradation that would otherwise occur with prolonged continuous lighting.
Solution Approach 2:
The patent changes the power supply parameter from a first power level to a second power level based on continuous lighting time to maintain light emission stability. This parameter change approach allows the system to extend continuous operation capability while preventing light emission instability that would naturally occur with prolonged use.
Data Source
AI summary
A light source apparatus for an endoscope, which has a lamp, a power source, a light adjustment control module that controls power to be supplied to the lamp within a range not more than an upper limit power based on a brightness instruction signal, and a continuous lighting sensing module that measures a continuous lighting time period from time when the lamp shifts from being extinguished to being lighted, compares the continuous lighting time period with a predetermined upper limit time period, and initializes the continuous lighting time period while the lamp is extinguished, wherein the upper limit power is set to a first upper limit power when the continuous lighting time period has not reached the upper limit time period, and changed to a second upper limit power lower than the first upper limit power in a stepwise manner when the upper limit time period has not been reached.