Microsurgery Optical Imaging with Adjustable Optics and Naked-Eye 3D
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Solution Overview
Problem
Existing microsurgery technologies face challenges such as complex image processing, large system delays, and visual fatigue due to fixed exit pupils and inadequate depth perception, making it difficult for surgeons to perform precise operations under a microscope.
Innovation Solution
A microsurgery auxiliary device with a naked eye 3D display and adjustable lens system, allowing for simple, low-delay observation and adjustable focal lengths, along with a compact illumination system to reduce visual strain and enhance depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional optical surgery microscope is used, then three-dimensional sense and clear visualization of small tissues are achieved, but the operator experiences visual fatigue and discomfort due to fixed exit pupil position requiring constant posture
Solution Approach 1:
The patent creates a virtual copy of the surgical field using a camera system that captures images through the microscope's optical path. This virtual image is then displayed on a screen, allowing operators to view the surgical field without maintaining the fixed posture required by traditional microscopes. The camera system replicates the optical path to generate accurate three-dimensional visual information.
Solution Approach 2:
The patent introduces a camera as an intermediary device between the microscope optical system and the operator's eye. The camera captures the surgical field and transmits the image to a display screen, serving as a mediator that eliminates the need for direct eye-to-eyepiece observation and thereby reduces operator fatigue.
2Measurement precision
If polarization-based 3D display is used, then three-dimensional image is achieved, but the operator experiences visual fatigue and brightness loss due to polarization filtering
Solution Approach 1:
Instead of using polarization-based 3D displays that filter and lose optical energy, the patent uses a camera system to capture and reproduce the surgical field as a virtual image. The camera captures light intensity and directional information, then displays it on a screen without the energy loss associated with polarization filtering.
Solution Approach 2:
The patent replaces the polarization-based optical system with a digital imaging system. Instead of using polarized light and glasses, the system uses a camera to capture images and a display screen to present them, substituting the mechanical polarization system with an electronic imaging and display system that preserves optical energy.
3Measurement precision
If complex image processing is performed for 3D display, then depth information is enhanced, but system delay increases making real-time operations difficult
Solution Approach 1:
The patent uses a camera system that directly captures the surgical field and displays the captured images in real-time. By copying the optical path and using a high-speed camera with sufficient frame rate, the system maintains real-time performance while preserving depth information through the natural optical path rather than complex post-processing.
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 surgeons to perform operations with reduced visual fatigue and improved depth perception, facilitating precise surgical procedures without complex image processing delays and maintaining ergonomic comfort.
Implementation Method 1
a lens group comprising a positive lens group and a negative lens group arranged in the same optical axis
Implementation Method 2
the lens body is internally provided with an imaging unit; the imaging unit comprises a large objective lens group, a zoom lens group, a first tube objective lens and a photosensitive element
Data Source
Figure 1~2(b)
Figure 3~4
Figure 5~6(b)
AI summary
A microsurgery auxiliary device provided in the present invention, comprises a lens body (1) and a naked eye 3D display (2), the lens body (1) being internally provided with an imaging unit (10); the imaging unit (10) comprises a large objective lens group (11), a zoom lens group (12), a first tube objective lens (13) and a photosensitive element (14); the large objective lens group (11), the zoom lens group (12), the first tube objective lens (13) and the photosensitive element (14) are sequentially located in the same observation optical path; the large objective lens group (11) comprises at least one positive lens group (111) and at least one negative lens group (112), the positive lens group (111) and the negative lens group (112) are arranged in the same optical axis, and the spacing between the positive lens group (111) and the negative lens group (112) is adjustable; and the naked eye 3D display (2) is connected to the photosensitive element (14), the distance between the naked eye 3D display (2) and an observer (5) is 400-1200 mm, and the viewing angle range of the naked eye 3D display (2) is not less than 120 degrees. The observer can directly perform surgical operations by observing the naked eye 3D display (2), the overall structure of the device is simple, and the system delay is small.