Laser Protection System Using Optical Diffuser for Power Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional high-power laser measurement systems face limitations in power endurance, requiring multiple optical attenuators that increase cost and size, and lack feedback and modulation mechanisms to prevent damage from power abnormalities.
Innovation Solution
A laser protection system utilizing an optical diffuser to attenuate high-power laser beams, combined with a signal-processing device and control module for feedback and modulation, reducing the need for multiple attenuators and enabling encoded data transmission to prevent noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple optical attenuators are used to reduce laser power to within detector limits, then the photo detector can safely perform detection, but the cost and space occupation of the system increase significantly
Solution Approach 1:
The patent combines the attenuation function and detection function into a single integrated optical diffuser-detector assembly. The optical diffuser both attenuates the high-power laser beam and serves as the detection surface, eliminating the need for separate attenuator components while maintaining detection safety.
Solution Approach 2:
The optical diffuser performs multiple functions simultaneously: it acts as an attenuator to reduce laser power, as a beam homogenizer to distribute light evenly, and as the detection surface for the photo detector. This multi-functionality reduces the total number of components required in the system.
2Measurement precision
If multiple optical attenuators are introduced to meet power limits, then the photo detector can effectively perform detection, but the system cost and size increase
Solution Approach 1:
The optical diffuser and photo detector are integrated into a compact assembly where the diffuser serves as both the attenuation element and the light-receiving surface. This merging reduces the overall system size while maintaining measurement precision through the diffuser's ability to homogenize the light distribution.
3Measurement precision
If conventional detection mechanisms are used, then power measurement can be performed, but feedback and modulation functions are lacking to prevent damage from power abnormalities
Solution Approach 1:
The patent incorporates a feedback mechanism where the photo detector continuously monitors the laser power through the optical diffuser, and the control system adjusts the laser source based on the detected power levels. This closed-loop feedback enables real-time protection against power abnormalities while maintaining measurement precision.
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 system minimizes cost and space while providing protection and feedback mechanisms, reducing measurement errors due to noise interference and allowing safe operation of high-power laser systems.
Implementation Method 1
an optical diffuser, a photo detector, a signal-processing device and a control module. The high-power laser source is used for evaluating a setting data to generate a first laser light beam. The optical diffuser is used for receiving the first laser light beam and attenuating a laser power of the first laser light beam
Data Source
AI summary
A laser protection system includes a high-power laser source, an optical diffuser, a photo detector, a signal-processing device, and a control module. The high-power laser source generates a first laser light beam, and the optical diffuser attenuates a laser power of the first laser light beam to form a second laser light beam. The photo detector obtains an optical detection signal from the second laser light beam. The signal-processing device includes a signal conversion module, a processor, and an encoder. The signal conversion module transforms the optical detection signal into a measurement data eigenvalue. The encoder encodes the measurement data eigenvalue into a measured encoded data, and the setting data eigenvalue into a set encoded data. The control module evaluates the set encoded data and the measured encoded data to determine whether or not the high-power laser source needs to be stopped.