Microscope Enlargement Module Pupil Positioning
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Solution Overview
Problem
In microscopy, afocal enlargement changers with telescope optics cause variations in the exit pupil position, making it difficult to maintain a fixed pupil position necessary for special microscopy methods and remote focusing techniques, which complicates the use of components like SLMs and DMDs and requires auxiliary systems for aberration-free refocusing.
Innovation Solution
A changing system with afocal enlargement modules that include light deflection systems to adjust the beam path length, ensuring the exit pupil of the microscope lens is mapped to the same location along the optical axis, regardless of the enlargement level, allowing for a stationary pupil position and enabling the use of components like SLMs and DMDs in a fixed Fourier plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If telescope optics with different enlargement levels are used in enlargement changers, then the enlargement level can be adjusted, but the exit pupil position varies along the optical axis
Solution Approach 1:
A beam path length adjustment mechanism is introduced as an intermediary element between the telescope optics and the optical axis. This mechanism compensates for the exit pupil position variations caused by different enlargement levels, effectively decoupling the enlargement level selection from the exit pupil position instability.
Solution Approach 2:
The system dynamically adjusts the beam path length parameter to compensate for changes in enlargement level. By changing the beam path length in response to different telescope optics selections, the system maintains a constant exit pupil position despite variations in enlargement level.
2Manufacturing precision
If a fixed position of the lens pupil is required for special microscopy methods, then components like SLM and DMD can be fixedly positioned, but traditional telescope optics cannot be used
Solution Approach 1:
The beam path length adjustment mechanism serves as a mediator that enables the use of traditional telescope optics while maintaining a fixed pupil position. This intermediary system allows special microscopy methods requiring fixed pupil positions to function properly without restricting the choice of microscopy techniques.
3Reliability
If auxiliary systems are added to compensate for enlargement changes, then aberration-free refocusing can be maintained, but device complexity increases
Solution Approach 1:
The beam path length adjustment mechanism is designed to serve multiple functions: it maintains aberration-free refocusing, preserves a fixed exit pupil position, and works with different telescope optics configurations. This multi-functionality reduces the need for separate auxiliary systems for each problem.
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
This solution allows for a stationary image of the lens pupil during enlargement level changes, facilitating the use of components like SLMs and DMDs and enabling aberration-free refocusing, while reducing manufacturing costs and simplifying the exchange of enlargement modules in microscope systems.
Implementation Method 1
The enlargement changing modules respectively contain a light deflection system. The light deflection systems are designed to adjust the path length of the infinite beam path passing through the respective enlargement changing module
Data Source
AI summary
A changing system for a microscope includes multiple afocal enlargement changing modules of different enlargement levels that are optionally introducible into an infinite beam path running along an optical axis of the microscope. Each of the enlargement changing modules contain a light deflection system. The light deflection systems are designed to adjust the path length of the infinite beam path passing through the respective enlargement changing module in such a way that all of the enlargement changing modules, regardless of the different enlargement levels of the enlargement changing modules, map an exit pupil of a lens of the microscope onto the same location along the optical axis.