Laser Pulse Emission Control for Eye-Safe Power Output
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Solution Overview
Problem
Existing laser systems for eye safety rely on fixed limit values and worst-case scenario assumptions, limiting the power output and not considering actual operating behavior, which restricts the emission of laser light to ensure eye safety.
Innovation Solution
A method that actively controls laser pulse parameters in real-time, checking each pulse against predefined energy criteria to ensure eye safety, allowing for adaptive power adjustments and intercepting worst-case scenarios, thereby maximizing power output while maintaining eye safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed limit values and worst-case scenario assumptions are used for eye safety, then eye safety is ensured, but power output is limited
Solution Approach 1:
The patent applies dynamics by transitioning from fixed, static emission limits to dynamic, real-time adjustment of laser pulse parameters. The control system continuously monitors actual operating conditions and adapts the emission parameters accordingly, allowing the system to operate at higher power levels when conditions permit while maintaining eye safety through active parameter modification.
Solution Approach 2:
The patent implements parameter changes by actively modifying laser pulse parameters (energy, duration, repetition rate) based on real-time monitoring of actual emitted radiation and system state. This allows the system to deviate from fixed worst-case assumptions and operate with optimized parameters that maintain eye safety while maximizing power output under actual operating conditions.
2Reliability
If fixed, predefined limits are used for laser emission, then eye safety is guaranteed, but actual operating behavior is not considered
Solution Approach 1:
The patent applies feedback by implementing a control system that continuously monitors actual laser emission and system state, then uses this information to adjust emission parameters in real-time. The feedback loop compares actual operating conditions against safety criteria and dynamically modifies parameters to maintain eye safety while adapting to actual behavior rather than relying on fixed assumptions.
Solution Approach 2:
The patent implements dynamics by transforming the static, predefined emission limits into dynamic, adaptive parameters that respond to actual operating conditions. The system continuously adjusts emission parameters based on real-time monitoring, enabling versatile adaptation to different operating scenarios while maintaining eye safety through active control rather than fixed constraints.
3Power
If higher power is delivered during normal operation, then system performance improves, but risk of exceeding eye safety limits increases
Solution Approach 1:
The patent applies feedback by implementing real-time monitoring of actual emitted radiation and system state, using this information to dynamically adjust power delivery. The control system continuously evaluates whether current emission levels approach safety limits and automatically reduces power when necessary, enabling high power operation during normal conditions while preventing eye damage through active safety enforcement.
Solution Approach 2:
The patent implements preliminary anti-action by proactively monitoring emission parameters and taking corrective action before eye safety limits are exceeded. The control system continuously predicts whether upcoming pulses would violate safety criteria and preemptively adjusts parameters to prevent harmful effects, rather than reacting after damage occurs.
Data Source
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AI summary
The invention relates to a method for emitting laser light (4) in the form of laser pulses, having the steps of planning a laser pulse using pulse parameters (100), checking whether laser pulses emitted within a preceding specified time interval and the planned pulse satisfy a specified energy criterion, and emitting the planned laser pulse by means of an emission unit (2) if the energy criterion has been satisfied and not emitting the planned laser pulse or reducing the output of the laser pulse if the energy criterion has not been satisfied.