Adaptive Optics Wavefront Corrector for PS-OCT Retinal Imaging
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Solution Overview
Problem
Current polarization-sensitive optical coherence tomography (PS-OCT) systems have inadequate resolution to visualize the polarization properties of microscopic structures in the retina, such as those associated with glaucoma and age-related macular degeneration, due to limited lateral resolution and aberrations in the eye.
Innovation Solution
Integration of adaptive optics (AO) with PS-OCT to compensate for optical aberrations using a deformable mirror with an array of actuators, enhancing the system's ability to correct wavefront aberrations and improve lateral resolution, allowing for better visualization of retinal structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional PS-OCT systems are used, then the system structure remains simple, but the lateral resolution is insufficient to visualize microscopic retinal structures
Solution Approach 1:
The patent combines PS-OCT with adaptive optics by integrating a deformable mirror into the optical path. This merging of two previously separate systems (OCT and adaptive optics) enables simultaneous achievement of high lateral resolution and polarization sensitivity, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
The deformable mirror introduces dynamic adjustability to the optical system, allowing real-time compensation of ocular aberrations. This dynamic element enables the system to adapt to varying optical conditions while maintaining high resolution, addressing the resolution complexity trade-off.
2Measurement precision
If adaptive optics are integrated with PS-OCT, then lateral resolution and signal-to-noise ratio improve, but device complexity increases
Solution Approach 1:
By merging adaptive optics with PS-OCT, the system achieves enhanced signal-to-noise ratio through aberration correction while maintaining polarization sensitivity. The integration allows both functions to work synergistically, improving measurement precision despite increased complexity.
Solution Approach 2:
The deformable mirror serves multiple functions: it corrects optical aberrations, focuses light, and maintains the beam path. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving improved signal-to-noise ratio.
3Measurement precision
If adaptive optics are integrated with PS-OCT, then lateral resolution improves, but the system becomes more complex
Solution Approach 1:
The integration of adaptive optics with PS-OCT merges two functional systems into one unified platform. The deformable mirror is positioned within the existing optical path, allowing it to correct aberrations without requiring complete system redesign, thus improving lateral resolution with moderate increase in complexity.
Solution Approach 2:
The deformable mirror acts as an intermediary element between the light source and the retinal tissue. It mediates the optical path by compensating for aberrations introduced by the eye's media, enabling high-resolution imaging without requiring direct modification of the eye's optical properties.
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
The integration of AO with PS-OCT significantly increases the lateral resolution and signal-to-noise ratio, enabling more accurate detection of polarization properties and improved visualization of retinal structures, facilitating the diagnosis of retinal conditions like glaucoma and age-related macular degeneration.
Implementation Method 1
measuring the aberrations in a wavefront and compensating for them with a spatial phase modulator, sometimes called a wavefront corrector or deformable mirror
Implementation Method 2
measuring the aberrations in a wavefront and compensating for them with a spatial phase modulator
Implementation Method 3
The array of actuators, of at least one embodiment of a visualization apparatus, is selected from a group of about 20 or more, about 37 or more, about 100 or more, and about 144 or more piezo-electric actuators
Implementation Method 4
a reference arm comprising a reflecting surface positioned within the beam pathway and capable of reflecting the light beam
Implementation Method 5
The devices which have capacity for polarization detection are referred to as polarization-sensitive optical coherence tomography (PS-OCT) devices
Implementation Method 6
Adaptive Optics (AO) is a technology used to improve the performance of optical systems by reducing the effects of optical aberrations
Data Source
AI summary
The present disclosure includes disclosure of devices, and methods to resolve microscopic structures. In at least one exemplary embodiment, a visualization apparatus comprises a source arm having a light source operable to emit a light beam, wherein the light beam defines a beam pathway, a reference arm comprising a reflecting surface positioned within the beam pathway, a sample arm comprising a wavefront sensor, an adaptive optics wavefront corrector, and a target, each of which are positioned within the beam pathway, wherein the adaptive optics wavefront corrector is operable to compensate for at least one aberration in the light beam, a detector arm comprising a beam detector positioned within the beam pathway, wherein the beam detector is operable to detect the reflected light beam from the reference arm and the target, and wherein the visualization apparatus is operable to minimize at least one aberration of the target.