Ophthalmic Microscope Non-Parallel Objective Lenses Stereo Angle
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Solution Overview
Problem
Conventional ophthalmic microscope systems face limitations in optical design and mechanical flexibility due to the need for a large objective lens, restrict the stereo angle, and complicate the adjustment of focus positions, especially during high-magnification observations, and require complex operations for switching between anterior and posterior segment observations.
Innovation Solution
The ophthalmic microscope system incorporates non-parallel objective optical axes for its light-receiving systems, allowing for independent objective lenses and flexible optical arrangements, including a mechanism to change the stereo angle and focus position easily, and integrates an irradiation system that directs light from a different direction than the illumination system, enhancing three-dimensional imaging and simplifying operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a common objective lens is used in the binocular optical system, then the structure is simplified and ease of manufacture is improved, but the degree of freedom in optical design and mechanical design is restricted
Solution Approach 1:
The patent divides the binocular optical system into separate left and right optical systems, each with its own objective lens. This segmentation allows independent optimization of each optical path while maintaining overall system integration, resolving the contradiction between structural simplicity and design flexibility.
2Area of stationary object
If the objective lens diameter is increased, then the field of view is improved, but the device complexity and mechanical design restrictions increase
Solution Approach 1:
The patent introduces a stereo angle dimension to the optical system, allowing the left and right objective optical axes to diverge at a specific angle. This dimensional change enables a larger effective field of view and improved three-dimensional imaging without requiring excessively large lens diameters, thereby reducing mechanical design complexity.
3Manufacturing precision
If the stereo angle is increased, then the three-dimensional appearance of the observation image is improved, but the structure becomes more complex and adjustment becomes difficult
Solution Approach 1:
The patent makes the stereo angle adjustable by allowing the left and right objective lenses to be positioned at different angles relative to the optical axis. This dynamic adjustment capability enables optimization of the three-dimensional imaging effect while maintaining structural flexibility, avoiding the need for complex fixed-angle designs.
4Measurement precision
If the focus position is adjusted for different observation sites, then the observation precision is improved, but the operation becomes complicated and time-consuming
Solution Approach 1:
The patent combines multiple functions into integrated optical components. The binocular optical system is designed to simultaneously provide both observation and illumination functions, and the focus adjustment mechanism is integrated into the overall optical path design. This merging reduces the number of separate adjustment operations needed when switching between anterior and posterior segment observations.
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 configuration enables a larger stereo angle for three-dimensional imaging at high magnification, simplifies the adjustment of focus positions, and improves the flexibility and usability of the microscope system, allowing for comfortable binocular observation and efficient switching between observation sites.
Implementation Method 1
Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide the illumination light returning from the subject's eye to the first imaging device through the first objective lens
Data Source
AI summary
According to one embodiment, an ophthalmic microscope system includes an illumination system, a pair of light-receiving systems, and an irradiation system. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The irradiation system is configured to irradiate the subject's eye with light different from the illumination light from a direction different from the objective optical axes.