Ring-Shaped Endoscope LED Light Source for High-Brightness Imaging
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Solution Overview
Problem
Traditional surface-mounted LED beads in rigid endoscopes are limited by small bead count, low brightness, difficult mounting, and high total voltage, which affect imaging quality and safety for use in the human body.
Innovation Solution
A lighting source for endoscopes featuring LED chips arranged in a circular ring or arc shape on a substrate, connected in series, parallel, or hybrid configurations, packaged with fluorescent glue, and mounted in grooves on the objective lens, optimizing space utilization and reducing voltage and current to meet safety thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional surface-mounted LED beads are used for rigid endoscopes, then the structure is simple and easy to manufacture, but the number of light-emitting elements is limited resulting in low brightness
Solution Approach 1:
The endoscope structure is segmented into distinct functional modules: the lighting source is separated from the objective lens and mounted independently on the endoscope tube. This allows multiple LED chips to be arranged in a circular array without interfering with the lens structure, thereby increasing the number of light-emitting elements and overall brightness while keeping each component relatively simple to manufacture
Solution Approach 2:
The lighting source is arranged in a circular configuration around the objective lens, transitioning from a linear or single-point light source to a two-dimensional circular array. This dimensional change allows multiple LED chips to be packed more efficiently in the available space, increasing the total light-emitting area and brightness without significantly increasing structural complexity
2Illumination intensity
If more LED chips are arranged in a limited space, then the light-emitting area increases and brightness improves, but the assembly difficulty increases
Solution Approach 1:
The lighting source is designed as a separate, self-contained module that can be assembled and tested independently before being mounted on the endoscope tube. This modular approach simplifies the overall assembly process, allowing the complex circular LED array to be manufactured and quality-checked separately from the main endoscope assembly
Solution Approach 2:
Multiple LED chips are combined into a single integrated lighting source module with a unified circular structure. This merging of multiple light-emitting elements into one cohesive unit reduces the number of separate components that need to be handled during assembly, thereby reducing assembly difficulty while maintaining the increased brightness from multiple chips
3Illumination intensity
If LED chips are connected in series to increase brightness, then the illumination intensity improves, but the total voltage becomes excessive affecting safety for use inside the human body
Solution Approach 1:
The LED chip array is divided into multiple independent groups or segments that can be connected in parallel rather than in series. This segmentation of the electrical circuit allows each group to operate at safe voltage levels while the combined parallel configuration delivers sufficient total current to achieve high brightness without exceeding safety voltage thresholds for medical use
Solution Approach 2:
The electrical connection configuration is changed from series to parallel arrangement, fundamentally altering the voltage and current parameters of the system. In a parallel configuration, each LED chip receives the same safe voltage while the total current increases to provide high brightness, thereby changing the electrical parameters to simultaneously achieve both high illumination and safety requirements
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
Enhances illumination brightness, improves image resolution, simplifies assembly, and reduces manufacturing costs by increasing LED chip density and adhering to safety standards for human use.
Implementation Method 1
the lighting source comprises a light-emitting diode (LED) chip and a substrate
Implementation Method 2
the substrate is coated with a fluorescent glue for packaging
Data Source
AI summary
A lighting source and an endoscope are provided, and the lighting source is used for the endoscope. The lighting source includes a light-emitting diode (LED) chip and a substrate; the LED chip is arranged on and fixedly connected to the substrate, and is packaged into the lighting source; and the lighting source is circular ring-shaped or arc-shaped. The endoscope includes an endoscope tube; an objective lens, located at one end of the endoscope and at least partially located inside the endoscope tube; and the lighting source.