Operating Microscope Illuminating Device Dual Deflector Red Reflex
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Operating microscopes with two pairs of stereoscopic observation beam paths often fail to provide a satisfactory red reflex for both the main surgeon and the assistant, leading to adverse effects on stereoscopic viewing, as the red reflex is easily visible for the main surgeon but not for the assistant, who can only see it in one observation channel depending on their position.
Innovation Solution
The use of two semitransparent deflector elements, one associated with the first observation beam path of the main observer and the second observer, and another with the second observation beam path of the main observer and the second observer, allows for optimized red reflex for both observers by minimizing the number of deflector elements and enabling zero-degree illumination, which is essential for an optimum red reflex.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a 6° illumination angle is used to avoid shadowing, then the image plasticity is sufficient, but the red reflex cannot be produced
Solution Approach 1:
The illumination system is divided into two separate illumination paths: one providing 6° illumination for general plasticity and shadow avoidance, and another providing 0°-2° illumination for red reflex production. This segmentation allows both illumination requirements to be met simultaneously without compromise.
Solution Approach 2:
A beam splitter is introduced as an intermediary element to separate the single light source into two distinct illumination paths with different angles. The beam splitter enables the coexistence of 6° and 0°-2° illumination paths, resolving the contradiction between shadow avoidance and red reflex production.
2Reliability
If 0°-2° illumination is used to produce red reflex, then the red reflex is visible, but shadowing occurs and image plasticity is reduced
Solution Approach 1:
The illumination system is divided into two separate illumination paths: one providing 6° illumination for general plasticity and shadow avoidance, and another providing 0°-2° illumination for red reflex production. This segmentation allows both illumination requirements to be met simultaneously without compromise.
Solution Approach 2:
The 6° illumination path and 0°-2° illumination path are merged into a single combined illumination system that provides both functions simultaneously. The observer receives both the plasticity-enhancing 6° light and the red-reflex-producing 0°-2° light, combining the benefits of both illumination angles.
3Device complexity
If traditional illuminating devices are used, then the structure is simple, but the red reflex quality is inconsistent between main surgeon and assistant
Solution Approach 1:
The illumination system is divided into two separate illumination paths: one providing 6° illumination for general plasticity and shadow avoidance, and another providing 0°-2° illumination for red reflex production. This segmentation allows both illumination requirements to be met simultaneously without compromise.
Solution Approach 2:
The illuminating device is designed to serve multiple functions: it provides both 6° illumination for shadow avoidance and 0°-2° illumination for red reflex production, making it a universal system that addresses multiple illumination requirements simultaneously for both main surgeon and assistant.
4Reliability
If multiple deflector elements are used to provide red reflex for both observers, then the red reflex quality improves, but the device complexity and cost increase
Solution Approach 1:
The 6° illumination path and 0°-2° illumination path are merged into a single combined illumination system that provides both functions simultaneously. The observer receives both the plasticity-enhancing 6° light and the red-reflex-producing 0°-2° light, combining the benefits of both illumination angles.
Solution Approach 2:
The illuminating device is designed to serve multiple functions: it provides both 6° illumination for shadow avoidance and 0°-2° illumination for red reflex production, making it a universal system that addresses multiple illumination requirements simultaneously for both main surgeon and assistant.
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 ensures that both the main surgeon and the assistant receive a red reflex of substantially the same quality, preventing undesirable light reflexes and crosstalk between observation channels, thereby enhancing stereoscopic viewing for both observers with a compact and cost-effective illuminating device.
Implementation Method 1
two semitransparent deflector elements, a first of which is associated with a first observation beam path of the first observer and a first observation beam path of the second observer, and a second of which is associated with the second observation beam path of the first observer and the second observation beam path of the second observer
Implementation Method 2
the pupil of the eye being operated on shines reddish as a result of the light refracted by the retina
Data Source
AI summary
The present invention relates to an illuminating device for an operating microscope including two observation beam paths for a first observer and two observation beam paths for a second observer. An illuminating system provides two parallel illuminating beam paths and a deflecting device, for deflecting the parallel illuminating beam paths onto an object that is to be observed. The deflecting device includes a first semitransparent deflector element which is associated with a first observation beam path of the first observer and a first observation beam path of the second observer, and a second semitransparent deflector element, which is associated with a second observation beam path of the first observer and a second observation beam path of the second observer. The first illuminating beam path acts exclusively on the first deflector element and the second illuminating beam path acts exclusively on the second deflector element.