Flat Microscope Revolver Recess Structure for Objective Clearance
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Solution Overview
Problem
Flat revolvers in microscopes with parallel optical axes face interference issues between objectives and the stage or specimen due to varying working distances, leading to potential contact during focusing operations.
Innovation Solution
A microscope device with a flat revolver that holds objectives with parallel optical axes and varying working distances, featuring a recessed structure to prevent interference by setting a predetermined distance between objectives, allowing for safe magnification switching and focusing operations without contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a flat revolver with parallel optical axes is used, then the microscope can be installed in a small space with a simple parts structure, but an objective may come into contact with the stage or specimen during focusing operation
Solution Approach 1:
The mounting surface is designed with different local heights: a first mounting surface for holding the first objective and a second mounting surface for holding the second objective, where the second mounting surface is lower than the first. This local quality differentiation allows each objective to be positioned at an appropriate height relative to the stage, preventing interference while maintaining the simple flat revolver structure.
2Device complexity
If objectives with different working distances are held with parallel optical axes, then the revolver structure is simplified, but interference with the stage occurs during magnification switching and focusing operations
Solution Approach 1:
Instead of using inclined optical axes to avoid interference (solving the problem in one dimension), the invention transitions to solving it in another dimension by varying the mounting surface heights. The mounting surfaces are positioned at different heights in the vertical dimension, allowing parallel optical axes to coexist without interference with the stage during focusing and magnification switching operations.
3Reliability
If the revolver is designed with a recessed structure to prevent interference, then contact between objectives and stage is avoided, but the mounting surface complexity increases
Solution Approach 1:
The mounting surface incorporates localized recesses at specific positions where objectives with shorter working distances are mounted. These recesses are minimal structural modifications that provide the necessary clearance without requiring a complete redesign of the entire mounting surface, thus maintaining relative simplicity while ensuring reliable interference avoidance.
Data Source
AI summary
A flat revolver mountable on a microscope device holds a plurality of objectives having different magnifications, the same design value of parfocal distance, and different working distances so that optical axes of the objectives are parallel, and has a recessed structure in which with respect to a region where a first objective among the plurality of objectives is held, a region where a second objective different from the first objective is held is recessed by a predetermined distance such that the tip of the first objective does not interfere with a structure on a stage of the microscope device at magnification switching operation for switching an observation magnification of an image of a specimen in the microscope device and focusing operation for an object of observation.