Unlock instant, AI-driven research and patent intelligence for your innovation.

Closed loop control device and method with laser power real-time monitoring

A closed-loop control and real-time monitoring technology, which is applied to lasers, laser components, semiconductor lasers, etc., can solve problems such as slow response time, and achieve the effects of low production cost, convenient use, and high practical value

Pending Publication Date: 2017-05-31
WUHAN HGLASER ENG CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above methods mostly use manual power adjustment, which is highly subjective and has a relatively slow response time. At this time, a device that automatically adjusts the fast power is urgently needed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Closed loop control device and method with laser power real-time monitoring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A closed-loop control device for real-time monitoring of laser power, comprising a motorized attenuator 1 and a sampling lens 2 sequentially arranged on the optical path of the laser beam to be monitored, and a first incident angle of α is formed between the laser beam and the sampling lens 2, 0°≤α<90°, the laser beam is reflected by the sampling lens 2 to the monitor 3, the signal output terminal of the monitor 3 is connected to the signal input terminal of the controller 4, and the signal output terminal of the controller 4 is connected to the control of the electric attenuator 1 end. The monitor 3 includes a power detector, a photoelectric sensor, an energy meter and a beam quality analyzer. The monitor 3 in this embodiment is a power detector. The angle of the first angle of incidence is preferably 15°.

[0024] The side of the sampling lens 2 facing the incident direction of the laser beam is the first side, and the side of the sampling lens 2 facing the outgoing...

Embodiment 2

[0028] A closed-loop control method for real-time monitoring of laser power: reflect the laser beam to the monitor 3 through the sampling mirror 2 set on the optical path of the laser beam to be monitored, and the monitor 3 acquires the laser beam in real time and converts it into a data signal and sends it to the controller 4. The controller 4 analyzes the data information, generates a control signal and outputs it to the electric attenuator 1 arranged on the optical path of the laser beam at the front end of the sampling lens 2, and the electric attenuator 1 adjusts the laser beam according to the control signal. The laser beam is reflected by the sampling lens 2 to the monitor 3, forming a closed-loop control of the laser beam.

[0029] Obtaining the laser beam by the monitor 3 and converting it into a data signal includes obtaining the laser beam through the power detector and converting it into a power data signal. The controller 4 judges whether the data signal is within ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a closed loop control device with laser power real-time monitoring. The device comprises a power attenuator and a sampling lens orderly arranged on the optical path of a laser beam to be monitored. A first incident angle with an angle of alpha is formed between the laser beam and the sampling lens. The laser beam is reflected to a monitor via the sampling lens. The signal output end of the monitor is connected to the signal input end of the controller. The signal output end of the controller is connected to the control end of an electric attenuator. The invention discloses a closed loop control method with laser power real-time monitoring. The device has the advantages of a simple structure, low production cost, a good regulation effect, convenient use, a high practical value, and wide applicability.

Description

technical field [0001] The patent of the invention belongs to the technical field of laser control, and specifically relates to a closed-loop control device and method for real-time monitoring of laser power. Background technique [0002] In laser processing equipment, the power state of the laser has a great influence on laser processing; the power of the laser will change with the increase of working time, changes in environmental temperature and other factors, or unstable power supply. The processing effect is greatly affected; in addition, the laser power used for laser processing is different for different materials, and the power needs to be adjusted accurately, so real-time power monitoring is very important. [0003] At present, the most commonly used method in the industry is to keep a power meter on hand. When it is found that the processing technology has changed, use the power meter to test and then calibrate, or integrate the power meter into the equipment, such...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/00H01S5/00
CPCH01S3/0085H01S5/0085
Inventor 王建刚王雪辉雷桂明
Owner WUHAN HGLASER ENG CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com