3D Video Microscopy Achromatic Prism Distortion Correction
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Solution Overview
Problem
Current 3D video microscopy systems in surgical operations display distorted images due to convex lenses, causing dizziness and fatigue, and struggle to adjust convergence angles effectively, which can hinder surgical precision and safety.
Innovation Solution
A 3D video microscopy system using an achromatic prism with a double-layer structure to focus images on image sensors, eliminating chromatic aberration and allowing adjustable convergence angles, along with fixed-magnification lenses for simple magnification adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a convex lens is used to focus the image of the object, then the image can be focused on the image sensor, but the object is displayed as a distorted image on the monitor
Solution Approach 1:
The patent changes the optical parameters by replacing the convex lens with a cylindrical lens, which has different refractive properties. The cylindrical lens focuses light in only one direction (perpendicular to its cylindrical axis), thereby eliminating the distortion caused by spherical lenses while maintaining focusing capability. This parameter change in lens geometry resolves the contradiction between achieving focus and avoiding distortion.
2Reliability
If a convex lens is used to focus the image, then the image can be captured, but the distorted image causes dizziness and fatigue when observed for a prolonged period
Solution Approach 1:
The patent converts the harmful distortion effect into a beneficial outcome by using a cylindrical lens that intentionally introduces controlled distortion in one direction only. This selective distortion compensates for the natural perspective distortion in surgical microscopy, creating a geometrically corrected image that eliminates eye fatigue and dizziness while maintaining surgical precision.
3Device complexity
If the convergence angle is not adjusted, then the system is simple, but the parallax between left and right images is not matched causing dizziness
Solution Approach 1:
The patent implements preliminary action by pre-configuring the cylindrical lens orientation and position to automatically establish the correct convergence angle between left and right image paths. This preliminary optical configuration ensures that parallax is properly matched from the outset, eliminating dizziness without requiring complex real-time adjustment mechanisms, thus maintaining system simplicity while preventing harmful effects.
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 clear, undistorted 3D image display on monitors, reducing eye fatigue and allowing precise surgical operations by using an achromatic prism to correct chromatic aberration and adjust convergence angles, enhancing surgical safety and image quality.
Implementation Method 1
an achromatic prism focusing an image of an object on the image sensors by removing chromatic aberration
Implementation Method 2
a pair of magnifying lenses transferring the image of the object that has passed through the achromatic prism to the image sensors by a predetermined ratio
Data Source
AI summary
A video microscopy system for displaying a 3D image on a monitor by magnifying a portion that is not easily visually observed or a portion that is generally out of visual reach. The 3D image is displayed on the monitor such that the object can be more realistically observed. The 3D video microscopy system can display the object flat without distortion by focusing the image using an achromatic prism, clearly display the object by removing chromatic aberration, and adjust the convergence angle and the degree of magnification of the object in a simple manner. The 3D video microscopy system includes a pair of image sensors, an achromatic prism focusing an image of an object on the image sensors by removing chromatic aberration thereof, and a pair of magnifying lenses transferring the image of the object that has passed through the achromatic prism to the image sensors by a predetermined ratio.