Stereoscopic Endoscope Optical Axis Control
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Solution Overview
Problem
Current stereoscopic endoscope systems face challenges in achieving high depth resolution and suppressing distortion, particularly in reproducing the shape of objects with fidelity on a 3-D monitor, while maintaining comfortable and accurate stereoscopic observation within a specific range.
Innovation Solution
A stereoscopic endoscope system comprising two objective optical systems and image sensors, where the optical axial distance and distortion are carefully controlled to satisfy specific conditions, ensuring that the proportion of certain distances multiplied by the magnifying power of the monitor falls within defined ranges, thereby balancing the popping out and rising of images for natural stereoscopic effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distance between optical axes of the two objective optical systems is increased to improve depth resolution, then depth resolution is improved, but distortion in each objective optical system increases
Solution Approach 1:
The patent applies parameter changes by carefully controlling the optical axial distance between the two objective optical systems within a specific range (0.5mm to 2.0mm) and adjusting the magnifying power of the monitor to satisfy specific conditions. This optimization of parameters enables the system to achieve both improved depth resolution and suppressed distortion simultaneously, resolving the technical contradiction between these two parameters.
2Measurement precision
If the optical axial distance is increased to improve depth resolution, then depth resolution is improved, but the shape reproduction fidelity on the monitor deteriorates
Solution Approach 1:
The patent resolves this contradiction by optimizing the optical axial distance parameter within a specific range (0.5mm to 2.0mm) and controlling the magnifying power of the monitor to satisfy specific conditions. This parameter optimization enables the system to achieve high depth resolution while maintaining accurate shape reproduction fidelity on the monitor, preventing both popping out and rising effects.
3Illumination intensity
If the magnifying power of the monitor is increased to improve image visibility, then image visibility is improved, but the stereoscopic effect becomes unnatural
Solution Approach 1:
The patent resolves this contradiction by controlling the magnifying power of the monitor within specific conditions that relate to the optical axial distance and field of view parameters. This optimization ensures that the monitor provides sufficient image visibility while maintaining natural stereoscopic effect, preventing both excessive popping out and rising of images.
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 enhances depth resolution and suppresses image distortion, allowing for comfortable and accurate stereoscopic vision without objects appearing unnatural or distorted, particularly in the central and peripheral areas of the field of view.
Implementation Method 1
a first objective optical system and a second objective optical system... an image of a first object formed in the first image pickup range, the first object is disposed at an intermediate position in an optical axial distance between the first objective optical system and the second objective optical system
Data Source
AI summary
A stereoscopic endoscope system includes:a first objective optical system, a second objective optical system, an image sensor which has a first image pickup range corresponding to a range of a field of view of the first objective optical system and a second image pickup range corresponding to a range of a field of view of the second objective optical system; and a monitor, wherein the stereoscopic endoscope system satisfies the condition (1) and condition (2).