TWM598197U - Optical fiber laser source power self-detection and compensation device - Google Patents

Abstract

This creation is about an optical fiber laser source power self-detection and compensation device. It is mainly connected to the optical host of the optical fiber laser source with an optical fiber, and a laser output head is connected to the end of the optical fiber to make the detection compensation device The optical coupler is connected to the optical fiber arranged between the optical host and the laser output head, and the optical detection module is connected to the optical coupler, and the optical detection module is connected to a control module; thereby, the optical fiber The laser source can automatically detect the power of the laser output during the use of the laser source, and when the detected value and the set value are too large, it means that the laser output is declining, and it can immediately self-compensate to prevent any occurrences in use The phenomenon of bad finished products can effectively improve the quality of laser processing, and it can increase the practical function characteristics in its overall implementation.

Description

Optical fiber laser source power self-detection and compensation device

This creation is about an optical fiber laser source power self-detection and compensation device, especially a device that can automatically detect the power of the laser output during the use of the optical fiber laser source, and the difference between the detected value and the set value is too large When the laser output is degraded, it can self-compensate immediately to prevent the use of defective products, which can effectively improve the quality of laser processing, and increase the practical performance characteristics of the overall implementation. Innovative designer of optical fiber laser source power self-detection and compensation device.

According to the rapid development of laser processing technology in recent years, especially high-power lasers are used in laser cutting and welding operations; among them, for the common optical fiber laser source used for laser cutting and welding operations, please refer to the second picture As shown in the existing structural diagram, it is mainly provided with an optical fiber laser source (3), an optical host (31) is provided in the optical fiber laser source (3), and the optical host (31) is connected with an optical fiber (32) , A laser output head (33) is connected to the end of the optical fiber (32), so that the laser light (34) can be output from the laser output head (33), and the laser light (34) is used for laser Cutting and welding operations.

However, although the above-mentioned optical fiber laser source can achieve the expected effect of cutting off the current for laser cutting and welding operations, it has also been found in its actual operation and use that the output power of the optical fiber laser source is manufactured before the factory leaves the factory. , By measuring the laser light output from the laser output head by the external optical power measurement, the user can not measure the output power of the fiber laser source without this professional measuring instrument after leaving the factory. After long-term use, the radiation source will experience power degradation, and the degradation degree is different. It is often not used until the user finds that the laser light power is degraded. At this time, defective products have been produced, which causes troubles in controlling the quality of laser processing. , So that there is still room for improvement in the overall structural design.

The reason is that, in view of this, the creators have years of rich experience in design, development and actual production in the related industry, and then research and improve the existing technical methods, providing a device for self-detection and compensation of optical fiber laser source power in order to achieve better The purpose of good practical value.

The main purpose of this creation is to provide an optical fiber laser source power self-detection and compensation device, which is mainly used to automatically detect the power of the laser output terminal during the use of the optical fiber laser source, and the difference between the detected value and the set value When it is too large, it means that the laser output has been degraded, and it can be self-compensated immediately to prevent the use of defective products, which can effectively improve the quality of laser processing, and increase the practical performance characteristics in its overall implementation. By.

The main purpose and effect of this device for self-detection and compensation of optical fiber laser source power are achieved by the following specific technical means:

It mainly includes optical fiber laser source and detection compensation device; among them:

The optical fiber laser source is provided with an optical host, an optical fiber is connected to the optical host, and a laser output head is connected to the end of the optical fiber;

The detection and compensation device is provided with an optical coupler, the optical coupler is connected to the optical fiber arranged between the optical host and the laser output head, and an optical detection module is connected to the optical coupler, and the The light detection module is connected to a control module.

A preferred embodiment of the device for self-detection and compensation of optical fiber laser source power in the present invention, wherein the optical coupler of the detection and compensation device is provided with an optical fiber input end and an optical fiber output end respectively, so that the optical fiber input end and the optical host The optical fiber connected to the output is connected, and the optical fiber output end is connected to the optical fiber input to the laser output head, and the optical combiner is provided with a transmission end connected to the optical detection module.

In order to make a more complete and clear disclosure of the technical content, the purpose of creation and the effect achieved in this creation, we will explain in detail below, and please also refer to the disclosed diagram and figure number:

First of all, please refer to the structure diagram of this creation in the first figure. This creation mainly includes an optical fiber laser source (1) and a detection and compensation device (2); among them:

The optical fiber laser source (1) is provided with an optical host (11), an optical fiber (12) is connected to the optical host (11), and a laser output head (13) is connected to the end of the optical fiber (12) ).

The detection and compensation device (2) is provided with an optical coupler (21), and the optical coupler (21) is connected to the optical fiber (12) between the optical host (11) and the laser output head (13) ), the optical coupler (21) is provided with an optical fiber input end (211) and an optical fiber output end (212), so that the optical fiber input end (211) is connected to the optical host (11) to output the optical fiber (12) ) Is connected, and the optical fiber output end (212) is connected to the optical fiber (12) connected and inputted to the laser output head (13), and the optical coupler (21) is provided with a transmission end (213) It is connected to the light detection module (22), and the light detection module (22) is connected to a control module (23).

In this way, when the laser light is output from the optical host (11) of the optical fiber laser source (1) through the optical fiber (12) by the laser output head (13), the optical fiber (12) and the The refractive index of the laser output head (13) is different, and the reflection phenomenon will occur at the connection point to produce reflected light, so that the laser output head (13) is measured before the fiber laser source (1) leaves the factory. The laser output power value and the laser reflected light power value, and establish a database [please refer to the following table 1 together]; so that during the use of the fiber laser source (1), the laser reflected light The optical coupler (21) of the detection and compensation device (2) will be transmitted in whole or in part from the transmission end (213) to the optical detection module (22), so that the optical detection module (22) will reflect Light absorption generates induced current, and the induced current signal is transmitted to the control module (23). The control module (23) can instantly calculate the laser output power through the detected laser reflected light power value against the database When the laser reflected light power value Wb1' detected by the control module (23) is equal to the measured value Wb1 in the database, the Wa1' detected by the laser output power value will be equal to the value in the database The measured value Wa1, when the laser reflected light power value detected by the control module (23) is not equal to the measured value in the database, interpolation or curve fitting can be used to calculate the detected lightning The ratio R of the reflected light power value Wb' to the measured value Wb in the database, and then multiply the ratio R by the laser output power value Wa in the database to calculate the current laser output power Value Wa', when the laser output power value Wa' is less than the set value Wa, it can be self-compensated by increasing the setting method to increase the output power. Set output conditions (%) Laser output power Laser reflector power P1 Wa1 Wb1 P2 Wa2 Wb2 P3 Wa3 Wb3 P4 Wa4 Wb4 … ... … Table I

Based on the above, the composition of the creative structure and the use and implementation description show that, compared with the existing structure, this creation is mainly based on the ability to automatically detect the power of the laser output end during the use of the fiber laser source. And when the difference between the detected value and the set value is too large, it means that the laser output is declining, and it can be self-compensated immediately to prevent the use of defective products, which can effectively improve the quality of laser processing, and in its overall Those who are more practical and functional.

The foregoing embodiments or drawings do not limit the structure of this creation, and any appropriate changes or modifications by those with ordinary knowledge in the technical field should be regarded as not departing from the scope of the patent of this creation.

In summary, this creative embodiment can indeed achieve the expected use effect, and the specific structure disclosed by it has not been seen in similar products, nor has it been disclosed before the application. It is in full compliance with the provisions and requirements of the Patent Law. , Yan submits an application for a new patent in accordance with the law, and asks for favors for examination and grants a patent.

1: Fiber laser source

11: Optical host

12: Optical fiber

13: Laser output head

2: Detection and compensation device

21: Optical combiner

211: fiber input

212: fiber output

213: transmission end

22: Light detection module

23: control module

3: Fiber laser source

31: Optical host

32: Optical fiber

33: Laser output head

34: Laser light

Picture 1: The structure diagram of this creation

Figure 2: Schematic diagram of the existing structure

1: Fiber laser source

11: Optical host

12: Optical fiber

13: Laser output head

2: Detection and compensation device

21: Optical combiner

211: fiber input

212: fiber output

213: transmission end

22: Light detection module

23: control module

Claims (2)

An optical fiber laser source power self-detection and compensation device, which mainly includes optical fiber laser source and detection compensation device; among them: The optical fiber laser source is provided with an optical host, an optical fiber is connected to the optical host, and a laser output head is connected to the end of the optical fiber; The detection and compensation device is provided with an optical coupler, the optical coupler is connected to the optical fiber arranged between the optical host and the laser output head, and an optical detection module is connected to the optical coupler, and the The light detection module is connected to a control module. The optical fiber laser source power self-detection and compensation device of claim 1, wherein the optical coupler of the detection and compensation device is provided with an optical fiber input end and an optical fiber output end, so that the optical fiber input end and the optical host The optical fiber connected to the output is connected, and the optical fiber output end is connected to the optical fiber connected to the input of the laser output head, and the optical combiner is provided with a transmission end connected to the optical detection module.

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