Spatial Light Modulator Vision Simulation for Higher Order Aberrations
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Solution Overview
Problem
Current visual simulation methods, such as phoropters, are inadequate for simulating and visualizing higher order visual defects, limiting their effectiveness in providing comprehensive corrections.
Innovation Solution
A vision simulation device employing a spatially controllable light wave modulator, driven by a control device, to generate and compensate for aberrations, including higher order ones, allowing patients to subjectively experience and decide on the best correction, with data for laser treatment adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If phoropters or processed PMMA plates are used for visual simulation, then basic refractive corrections can be determined, but higher order visual defects cannot be simulated or visualized
Solution Approach 1:
The patent replaces traditional mechanical optical systems (phoropters with physical lenses) with a spatial light modulator that uses electronic control to generate and modulate light waves. This substitution enables dynamic generation of higher order aberrations through programmable phase modulation, overcoming the limitation of fixed lens sets in phoropters.
Solution Approach 2:
The patent changes the parameters of light waves (phase, amplitude, spatial distribution) using a spatial light modulator to simulate various visual defects. By programmatically adjusting these optical parameters, the system can generate both basic refractive errors and complex higher order aberrations, achieving versatile visual simulation capability.
2Ease of operation
If traditional phoropters are used, then subjective refraction can be determined, but comprehensive correction simulation including higher order defects is insufficient
Solution Approach 1:
The spatial light modulator serves multiple functions: it can generate basic refractive errors (myopia, hyperopia, astigmatism) as well as higher order aberrations (coma, spherical aberration, trefoil). This multi-functionality allows a single device to comprehensively simulate all types of visual defects, replacing the need for multiple specialized optical components.
Solution Approach 2:
The system transitions from static physical lenses in phoropters to a dynamic spatial light modulator that can be programmatically adjusted in real-time. This dynamics enables continuous variation of optical parameters and rapid switching between different defect types, providing both ease of operation and comprehensive versatility.
3Adaptability or versatility
If light wave modulators are used to simulate higher order aberrations, then comprehensive visual defect simulation is achieved, but device complexity increases
Solution Approach 1:
The spatial light modulator acts as an intermediary device that translates computer-generated aberration patterns into physical light wave modulations. This intermediary component simplifies the overall system architecture by centralizing the complex aberration generation function in a single programmable device, rather than requiring multiple complex optical components.
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
Enables improved visualization and simulation of visual defects, allowing for better adaptation of corrections to individual needs, enhancing the decision-making process for treatments and improving the effectiveness of visual defect corrections.
Implementation Method 1
the at least one spatially controllable light wave modulator is arranged and formed to modulate light waves for generating aberrations
Data Source
AI summary
The invention relates to a vision simulation device (10) for providing a correction of visual defects and to a method for operating the vision simulation device (10). The vision simulation device (10) includes an eye interface (16), at least one spatially controllable light wave modulator (12) and a control device (14), wherein the at least one spatially controllable light wave modulator (12) is arranged and formed to modulate light waves (20) for generating aberrations and to provide the modulated light waves (22′) at the eye interface (16) of the vision simulation device (10), wherein the control device (14) is formed to drive the spatially controllable light wave modulator (12) for at least partially compensating for at least one predetermined visual defect by generating at least one preset aberration.