Microscope Tube Optics for Wide Adjustable Viewing Angle
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Solution Overview
Problem
Conventional microscope tubes have a fixed visual angle that is not ergonomic for all users, particularly causing discomfort for those with shorter heights when used in tall stands, and lack a wide adjustment range.
Innovation Solution
A microscope tube with a deflecting optical system comprising a fixed and rotatable optical components group, allowing light to reflect four times to achieve a wide adjustable visual angle range, including a rotatable mirror and prism for precise angle adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed visual angle microscope tube is used, then the structure is simple, but it cannot accommodate users of different heights and causes ergonomic discomfort
Solution Approach 1:
The deflecting optical system is divided into a fixed deflecting optical components group and a rotatable deflecting optical components group. This segmentation allows independent adjustment of the rotatable group to change visual angle, while the fixed group maintains stable optical path folding, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The rotatable deflecting optical components group can rotate around the optical axis to dynamically adjust the visual angle. This dynamic capability enables the microscope tube to adapt to different user heights and viewing preferences without complicating the overall fixed structure.
2Adaptability or versatility
If the microscope stand is tall to accommodate various users, then it can provide better ergonomics for tall users, but it becomes uncomfortable for short users with fixed visual angle
Solution Approach 1:
The rotatable deflecting optical components group enables dynamic adjustment of the visual angle, allowing short users to achieve comfortable viewing positions even when the microscope stand is tall. The rotation mechanism compensates for height differences without requiring multiple stand heights.
Solution Approach 2:
By changing the visual angle parameter through rotation of the deflecting optical components, the system adapts to different user heights. The visual angle can be adjusted to minimize the angle between the optical path axis and the horizontal line, accommodating various ergonomic requirements.
3Adaptability or versatility
If multiple reflections are used in the deflecting optical system, then the visual angle adjustment range is improved, but the optical path length increases
Solution Approach 1:
The deflecting optical system uses multiple reflections to fold the optical path in multiple dimensions. This allows the optical path to achieve a large adjustment range while maintaining a compact physical footprint, effectively managing the optical path length through spatial folding.
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 a large adjustment range of the visual angle, allowing comfortable observation for users of varying heights, reducing fatigue, and maintaining a compact design.
Implementation Method 1
light emitted from the objective reaching the binocular unit after an even number of reflections of at least four times by the deflecting optical system
Implementation Method 2
the visual angle being adjustable by the rotatable deflecting optical components group
Data Source
AI summary
The present disclosure is directed to a microscope tube including a ocular optical path including a collecting lens, a deflecting optical system, a binocular unit and an eyepiece, wherein light emitted from an objective enters through the collecting lens and is transmitted into the binocular unit via the deflecting optical system to allow a human eye to observe by the eyepiece at a visual angle, wherein the deflecting optical system includes a fixed deflecting optical components group and a rotatable deflecting optical components group located after the fixed deflecting optical components group along a light transmission path, the visual angle being adjustable by the rotatable deflecting optical components group, and light emitted from the objective reaching the binocular unit after an even number of reflections of at least four times by the deflecting optical system.