Endoscope Lighting Device Airflow Shaking Speckle Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional endoscope lighting devices that inhibit speckle generation through the use of piezoelectric elements and driving devices increase manufacturing costs, necessitating a cost-effective solution that prevents speckle formation.
Innovation Solution
An endoscope lighting device incorporating a laser light source, a fiber cable, a phosphor for fluorescent light emission, and a blower that generates airflow to cause a shakable body to contact and shake the fiber cable, thereby irregularly varying the light pattern and preventing speckle formation without the need for piezoelectric elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a piezoelectric element and driving device are used to shake the reflective mirror, then speckle generation is inhibited, but the manufacturing cost increases
Solution Approach 1:
The patent removes the piezoelectric element and driving device from the system entirely. Instead of using an active piezoelectric actuator, the invention extracts only the essential function of shaking the fiber cable, which is achieved passively through airflow from a blower passing through apertures in the housing to vibrate the fiber cable directly, thereby eliminating costly components while maintaining speckle suppression
Solution Approach 2:
The fiber cable serves a dual function: it transmits laser light to the phosphor and simultaneously acts as the shaking element when exposed to airflow. The housing structure with apertures enables the fiber cable to be directly vibrated by air flow without requiring separate actuation mechanisms. This self-service approach allows the fiber cable to perform both optical transmission and mechanical vibration functions, eliminating the need for piezoelectric elements and reducing manufacturing cost
2Object-affected harmful factors
If a piezoelectric element is used to cause the reflective mirror to shake, then speckle generation is inhibited, but the device complexity increases
Solution Approach 1:
The patent removes the piezoelectric element and driving device from the system entirely. Instead of using an active piezoelectric actuator, the invention extracts only the essential function of shaking the fiber cable, which is achieved passively through airflow from a blower passing through apertures in the housing to vibrate the fiber cable directly, thereby eliminating costly components while maintaining speckle suppression
Solution Approach 2:
The fiber cable serves a dual function: it transmits laser light to the phosphor and simultaneously acts as the shaking element when exposed to airflow. The housing structure with apertures enables the fiber cable to be directly vibrated by air flow without requiring separate actuation mechanisms. This self-service approach allows the fiber cable to perform both optical transmission and mechanical vibration functions, eliminating the need for piezoelectric elements and reducing manufacturing cost
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
This configuration effectively inhibits speckle generation while maintaining a lower manufacturing cost by using airflow-induced shaking of the fiber cable, ensuring clear images without the added expense of piezoelectric components.
Implementation Method 1
a phosphor layer that emits fluorescent light when excited by the excitation light
Implementation Method 2
a blower that generates airflow in the housing
Data Source
AI summary
An endoscope lighting device to be used for an endoscope is provided. The endoscope lighting device includes a housing. A laser light source is in the housing. A fiber cable receives laser light emitted by the laser light source. A phosphor of a fluorescent light emitter emits fluorescent light using the laser light exiting from the fiber cable. A blower generates airflow in the housing. A shakable body contacts the fiber cable and shakes in reaction to the airflow generated by the blower.