3D Endoscope Optical System with Dual Objective Lenses
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Solution Overview
Problem
Conventional three-dimensional-endoscope optical systems face challenges in achieving an optimal three-dimensional effect with wide-angle observation, as they often result in eye fatigue, loss of three-dimensional effect, or difficulty in imaging due to inappropriate spacing between optical axes, depth of field, and angle of view.
Innovation Solution
A three-dimensional-endoscope optical system comprising two objective optical systems with spaced optical axes and an optical-axis deflecting member, where specific conditions (0.5 mm < OP < 1.5 mm, 3 mm < D < 200 mm, α < 10°, and 110° < ω < 180°) are met to form two optical images in the same plane, reducing vertical and horizontal displacement and enhancing observation ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spacing between optical axes is increased to achieve a three-dimensional effect, then the three-dimensional effect is improved, but eye fatigue increases and observation becomes difficult
Solution Approach 1:
The patent optimizes the spacing between optical axes to a specific range (0.5 mm to 1.5 mm) to achieve the desired three-dimensional effect while minimizing eye fatigue. This parameter optimization resolves the contradiction by finding the optimal value that satisfies both requirements simultaneously.
2Area of stationary object
If the angle of view is increased to achieve wide-angle observation, then the observation area is improved, but image quality and three-dimensional effect deteriorate
Solution Approach 1:
The patent sets the angle of view within a specific range (110° to 180°) to achieve wide-angle observation while maintaining acceptable image quality and three-dimensional effect. This parameter optimization resolves the contradiction by finding the optimal range that balances both requirements.
3Measurement precision
If the depth of field is increased to improve observation of distant objects, then the observation range is improved, but the three-dimensional effect is reduced
Solution Approach 1:
The patent optimizes the depth of field to a specific range (3 mm to 200 mm) to achieve adequate observation range while preserving the three-dimensional effect. This parameter optimization resolves the contradiction by finding the optimal range that satisfies both requirements.
4Manufacturing precision
If lens groups are disposed with large spacing to reduce aberration, then image quality is improved, but the device size increases
Solution Approach 1:
The patent optimizes the spacing between lens groups to achieve acceptable image quality while minimizing device size. By carefully controlling this parameter, the patent resolves the contradiction between image quality and compactness.
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
The system achieves an appropriate three-dimensional effect with reduced eye fatigue and improved imaging precision by satisfying the specified conditions, allowing for effective wide-angle observation without nausea or distortion.
Implementation Method 1
an optical-axis deflecting member that is disposed between the two lens groups and that deflects light that has passed through one of the two lens groups so as to make the light enter the other of the two lens group
Data Source
AI summary
Provided is a three-dimensional-endoscope optical system that is provided with two objective optical systems having optical axes, which are arranged with a spacing therebetween, and that satisfies the following conditions:0.5 mm<OP<1.5 mm (1);3 mm<D<200 mm (2);α<10° (3); and110°<ω<180° (4),where OP is a spacing between the optical axes of optical members at the most distal ends of the objective optical systems, D is a depth of field, α is an angle of convergence (inward angle) of the depth of field D when performing near-point observation, and ω is an angle of view of the objective optical systems.