Fiber Optic Probe with Rotating Light Path Selector
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Solution Overview
Problem
Conventional fiber optic probes for endoscopes and OCT systems can only perform either forward or lateral scanning, lacking the ability to simultaneously obtain both types of scanning information, which is inefficient and can lead to insufficient data during medical examinations.
Innovation Solution
A fiber-type image capturing method and apparatus that uses a light beam passing through both forward and lateral scanning paths simultaneously, utilizing optical refraction and reflection, with a rotating light path selector to achieve both forward and lateral scanning with depth information using a single probe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fiber optic probe is designed for lateral scanning only, then lateral image information can be obtained, but forward image information cannot be obtained without stretching and pulling back the probe in a spiral manner
Solution Approach 1:
The patent combines forward scanning and lateral scanning capabilities into a single fiber optic probe by integrating two scanning paths (forward scanning path and lateral scanning path) that share common components including the fiber optic core, cladding, and protective coating. This merging allows simultaneous acquisition of both forward and lateral image information without requiring probe manipulation.
Solution Approach 2:
The patent introduces a second scanning dimension by creating a lateral scanning path that operates perpendicular to the traditional forward scanning direction. The lateral scanning path uses total internal reflection at the cladding interface to redirect light laterally, adding a new dimensional capability to the probe while maintaining the original forward scanning function.
2Measurement precision
If a fiber optic probe is designed for forward scanning only, then forward image information can be obtained, but lateral image information cannot be obtained
Solution Approach 1:
The patent merges forward and lateral scanning functions into a unified probe structure where both scanning paths coexist and share common optical components. The light beam can be directed along either the forward scanning path or the lateral scanning path depending on the desired imaging direction, allowing versatile operation without requiring multiple probes.
Solution Approach 2:
The patent implements dynamic scanning capability where the light beam can be dynamically redirected between forward and lateral scanning paths. The scanning mechanism allows real-time switching between scanning directions, enabling the probe to adapt to different imaging requirements during medical examination procedures.
3Loss of information
If lateral scanning probe is used to obtain forward image information by stretching and pulling back in spiral manner, then some forward scanning information can be obtained, but the probe tip must be several millimeters away from the scanning spot which is not always feasible
Solution Approach 1:
The patent combines forward and lateral scanning paths in a single integrated probe structure, eliminating the need for probe manipulation techniques such as stretching and pulling back. The probe can be positioned directly at the scanning spot with the tip aligned to the region of interest, as both scanning directions are available simultaneously from the same probe position.
4Loss of information
If forward scanning probe is switched to lateral scanning probe to obtain lateral image information, then lateral scanning can be performed, but this approach is time and money inefficient
Solution Approach 1:
The patent merges forward and lateral scanning capabilities into a single probe, eliminating the need to switch between different probes. Both scanning functions are available simultaneously from one integrated device, allowing seamless transition between scanning modes without probe changes.
Solution Approach 2:
The patent creates a universal probe that performs both forward scanning and lateral scanning functions. The single probe structure incorporates multiple scanning paths that can be activated depending on the imaging requirements, making the probe multi-functional and eliminating the need for multiple specialized probes.
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 the acquisition of both forward and lateral scanning information with depth resolution using a single probe, reducing the need for probe changes and operating time, and simplifying the system while maintaining precise scanning capabilities.
Implementation Method 1
The forward scanning path is through optical refraction
Implementation Method 2
The lateral scanning path is through optical reflection
Implementation Method 3
The scattered light from the scanned sample is collected
Data Source
AI summary
A fiber-type image capturing apparatus includes a fiber optic, an optical rotating module, an outer tube, an air inlet hole, and an air outlet hole. The optical rotating module is connected to one end of the fiber optic and has a light forward exit and a light lateral exit. The optical rotating module further includes a stator, a rotor, and a light path selector. The stator is fixed correspondingly to the fiber optic. The rotor has a fan blade which is pivotally connected to the stator. The light path selector is installed at the rotor and has a forward scanning path and a lateral scanning path. The outer tube fixes the fiber optic and the optical rotating module. The air inlet hole is disposed at the outer tube and feeds the fan blade with air. The air outlet hole is disposed at the outer tube and vents the air.