Ophthalmic Microscope Compact OCT Optical Path
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Solution Overview
Problem
Ophthalmic operation microscopes with integrated OCT systems are bulky due to the protruding optical configuration for guiding OCT measurement light, which hinders miniaturization and increases size.
Innovation Solution
The configuration includes an illumination optical system, an observation optical system, an objective lens, an interference optical system, a first lens group, a second lens group, and a deflection member, where the deflection member is positioned between the first and second lens groups to redirect measurement light without protruding from the microscope body, allowing for a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the OCT measurement light is deflected by the beam scanner and passes through two lens groups before being reflected by the reflector toward the objective lens, then the optical system can guide the OCT measurement light to the patient's eye, but the optical system protrudes sideways from the main body of the microscope, increasing the size of the ophthalmic operation microscope
Solution Approach 1:
The patent reconfigures the optical path by placing the beam scanner between the first lens group and the objective lens, and positioning the reflector to reflect light from the beam scanner toward the objective lens. This spatial rearrangement allows the OCT optical system to be integrated within the microscope body without sideways protrusion, resolving the size issue while maintaining OCT functionality
Solution Approach 2:
The OCT optical system components (beam scanner, lens groups, reflector) are nested within the microscope body structure. The optical path is arranged so that these components fit within the existing microscope housing, eliminating the need for sideways protrusion and achieving miniaturization while preserving OCT measurement capability
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 the miniaturization of ophthalmic operation microscopes while maintaining the capability to acquire high-quality OCT images, reducing the overall size and cost of the device.
Implementation Method 1
The interference optical system splits light from a light source into measurement light and reference light, and detects interference light generated from returning light of the measurement light from the patient's eye and the reference light
Implementation Method 2
The deflection member is disposed between the first lens group and the second lens group in the optical path of the measurement light
Data Source
AI summary
In an ophthalmic operation microscope, an illumination optical system illuminates a patient's eye with illumination light. An observation optical system is used for observing the patient's eye illuminated. An objective lens is disposed in an observation optical path. An interference optical system splits light from a light source into measurement light and reference light, and detects interference light generated from returning light of the measurement light from the patient's eye and the reference light. A first lens group is disposed between the light source and the patient's eye in an optical path of the measurement light. A second lens group is disposed between the first lens group and the patient's eye in the optical path of the measurement light. A deflection member is disposed between the first lens group and the second lens group in the optical path of the measurement light.