Spatial Light Modulation for Multi-Target Ophthalmic Laser Alignment
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Solution Overview
Problem
Current laser treatment for ophthalmological conditions is time-consuming, requires precise eye tracking, and can be uncomfortable for patients due to individual targeting of multiple locations, with masking techniques posing alignment challenges.
Innovation Solution
A therapeutic laser delivery system using a spatial light modulator (SLM) device to simultaneously target and focus laser light at multiple locations within the eye, controlled by a processor and aided by imaging systems for precise alignment and eye movement tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If laser treatment is delivered to multiple locations sequentially with masking techniques, then multiple treatment locations can be targeted, but alignment and focusing at each location becomes difficult and device complexity increases
Solution Approach 1:
The patent segments the laser beam into multiple separate beams using a beam splitting element, allowing each beam to be independently directed to a specific treatment location. This segmentation enables precise targeting of multiple locations without the alignment complexity of masking techniques, as each beam path can be independently controlled and focused.
2Measurement precision
If laser treatment is delivered to each location individually with precise eye tracking, then treatment precision is maintained, but treatment time increases significantly
Solution Approach 1:
The patent merges multiple laser beams into a single delivery path using a beam combining element, allowing simultaneous delivery of treatment to multiple locations through one optical path. This combining approach maintains treatment precision at each location while dramatically reducing total treatment time compared to sequential individual targeting.
3Adaptability or versatility
If masking techniques are used to filter treatment laser light, then multiple treatment locations can be addressed, but alignment in relation to the patient becomes difficult
Solution Approach 1:
The patent replaces the mechanical masking system with an optical beam splitting and combining system. Instead of using physical masks that require alignment with the patient's eye, the system uses optical elements to divide and recombine laser beams, eliminating the alignment difficulties associated with masking techniques while maintaining multi-location treatment 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
Enables simultaneous treatment of multiple eye conditions, reducing treatment time and discomfort by improving alignment accuracy and reducing the need for repeated targeting, while allowing for varied power distribution and shape control of laser beams.
Implementation Method 1
a spatial light modulator (SLM) device arranged to modulate the therapeutic laser light delivered to the ophthalmological target to control target locations
Implementation Method 2
an imaging system capturing an image of the ophthalmological target
Implementation Method 3
the SLM device is arranged to modulate the targeting laser light to deliver/focus at the target locations
Data Source
AI summary
A therapeutic laser for use in treating ophthalmological conditions can be modulated by a spatial light modulation device in order to focus the therapeutic laser on a plurality of target locations simultaneously.