CN220270614U

CN220270614U - Laser energy tester

Info

Publication number: CN220270614U
Application number: CN202322008045.0U
Authority: CN
Inventors: 李�杰; 夏树策; 陈龙飞; 封涛; 王红岩; 熊冀; 李帅; 李存建; 赵艳芳
Original assignee: Henan Pingyuan Optical & Electronic Co ltd
Current assignee: Henan Pingyuan Optical & Electronic Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-12-29
Anticipated expiration: 2033-07-27

Abstract

The utility model relates to a laser energy tester, belongs to the technical field of laser energy testing, and solves the problem that in the prior art, test equipment is damaged by laser generated by short-pulse high-energy laser energy pulses, so that test precision is low. The laser energy tester of the utility model comprises: a probe assembly and a control host assembly; the probe assembly includes: filter glass, heat absorber and resistance wire sensor; the filter glass is a laser energy receiving window; the heat absorber is capable of converting laser energy into thermal energy; the resistance wire sensor is fixed on one side of the heat absorber, which is back to the filter glass, and can absorb heat and raise temperature, and the resistance of the resistance wire sensor changes along with the temperature change; the control host component is a data processing unit and can collect the resistance variation of the resistance wire sensor so as to display the processed laser energy data. The utility model realizes the indirect test of the laser energy by converting the laser energy into the internal energy and monitoring the resistance change of the resistance wire sensor.

Description

Laser energy tester

Technical Field

The utility model relates to the technical field of laser energy testing, in particular to a laser energy tester.

Background

At present, the method for testing high-energy laser energy at home and abroad is few, the types of energy meters are very limited, and the testing requirements cannot be completely met. In the laser energy test, short-pulse high-energy laser sets high requirements on the laser damage resistance threshold of the energy meter.

At present, high-energy laser testing equipment is increasingly demanded in China, but a domestic laser energy tester has certain defects in testing precision, pulse width range, wavelength range and the like.

Therefore, a new laser energy testing instrument needs to be provided to perform laser energy testing, and the laser damage resistance and the testing precision of the testing equipment are improved.

Disclosure of Invention

In view of the above analysis, the present utility model aims to provide a laser energy tester, which is used for solving the problem that the test accuracy is low due to the laser damage generated by the short-pulse high-energy laser energy pulse of the existing test equipment.

The aim of the utility model is mainly realized by the following technical scheme:

a laser energy tester, comprising: a probe assembly and a control host assembly; the probe assembly includes: filter glass and a heat absorbing component; the heat absorbing assembly includes: a heat absorber and a resistance wire sensor; the filter glass is a laser energy receiving window; the heat absorber is capable of converting laser energy into thermal energy; the resistance wire sensor is fixed on one side of the heat absorber, which is back to the filter glass, and can absorb heat and raise temperature, and the resistance of the resistance wire sensor changes along with the change of temperature;

the control host component is a data processing unit and can collect the resistance variation of the resistance wire sensor so as to display the processed laser energy data.

Further, the control host assembly includes: reinforcing the display and the control circuit board; the reinforcement display is used for displaying information and parameter input; the control circuit board is used for data processing and power supply control.

Further, a heat insulating plate for preventing heat diffusion is arranged on one side of the heat absorbing component, which is away from the filter glass.

Further, the resistance wire sensor is fixedly connected with the heat absorber through coating heat conducting glue.

Further, the probe assembly further comprises: a socket and a data acquisition board; the socket is used for connecting the control host component; the data acquisition board is used for acquiring the voltage change value of the resistance wire sensor and measuring the ambient temperature.

Further, the probe assembly further comprises: a probe housing and a support; the heat absorber assembly, the socket and the data acquisition board are arranged inside the probe shell; the filter glass is arranged on the side face of the probe shell, and the probe shell is supported by the support.

Further, the control host assembly further includes: a cabinet housing and a switch button; the cabinet shell is used for supporting the reinforced display and the control circuit board; the switch button is used for switching on and switching off the control host component.

Further, the parts, which are in contact with the probe shell, of the periphery of the heat absorber component are coated with conductive adhesive for sealing.

Further, the probe cable is used for realizing data transmission between the probe assembly and the control host assembly.

Further, the method further comprises the following steps: a data cable and a power supply cable; the control host component is connected with a power supply through the power supply cable; the data cable is used for realizing data export of the control host component.

The technical scheme of the utility model can at least realize one of the following effects:

1. according to the laser energy measuring instrument, laser energy is converted into heat energy through the heat absorber; the resistance wire sensor performs heat exchange, absorbs heat and heats up with the heat absorber, and the resistance of the resistance wire sensor changes along with the change of temperature; the control host component is a data processing unit and can collect the resistance variation of the resistance wire sensor so as to display the processed laser energy data; the utility model realizes the indirect test of the laser energy by converting the laser energy into the internal energy and monitoring the resistance change of the resistance wire sensor.

2. According to the laser energy measuring instrument, the heat insulation plate is arranged outside the heat absorber component, so that heat loss is prevented, the detection precision of internal energy converted from laser energy is improved, and finally high-precision laser energy test is realized.

3. The laser energy tester meets the testing requirements of high-energy laser in terms of technical indexes such as testing precision, laser damage resistance threshold, testing wavelength range and the like. The utility model is not only used for measuring the laser energy of fixed caliber and short pulse, but also used for measuring the pulse laser energy of millisecond level and measuring the laser energy of other calibers.

In the utility model, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, like reference numerals being used to refer to like parts throughout the several views.

FIG. 1 is a schematic diagram of the overall structure of a laser energy tester according to the present utility model;

FIG. 2 is a schematic structural diagram of a probe assembly of the laser energy tester of the present utility model;

FIG. 3 is a schematic diagram of the control host assembly of the laser energy tester of the present utility model.

Reference numerals:

1-a probe assembly; 2-a control host component; 3-probe cable; 4-a data cable; 5-a power supply cable;

11-filter glass; 12-a heat absorber; 13-resistance wire sensor; 14-insulating boards; 15-a socket; 16-a probe housing; 17-a data acquisition board; 18-supporting seats;

21-ruggedized display; 22-a switch button; 23-handle; 24-a control circuit board; 25-sealing rubber strips; 26-a back cover plate; 27-cabinet housing.

Detailed Description

The following detailed description of preferred embodiments of the utility model is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the utility model, are used to explain the principles of the utility model and are not intended to limit the scope of the utility model.

Example 1

In one embodiment of the present utility model, a laser energy tester is disclosed, as shown in fig. 1, comprising: a probe assembly 1 and a control host assembly 2; the probe assembly 1 comprises: a filter glass 11 and a heat absorbing member; the heat absorbing assembly includes: a heat absorber 12 and a resistance wire sensor 13; the filter glass 11 is a laser energy receiving window; the heat absorber 12 is capable of converting laser energy into thermal energy; the resistance wire sensor 13 is fixed on one side of the heat absorber 12, which is back to the filter glass 11, the resistance wire sensor 13 can absorb heat and raise temperature, and the resistance of the resistance wire sensor 13 changes along with the change of temperature; the control host component 2 is a data processing unit, and can collect the resistance variation of the resistance wire sensor 13, so as to display the processed laser energy data.

Further, as shown in fig. 2, in order to prevent heat dissipation from the heat absorber 12 and the resistance wire sensor 13 from affecting measurement accuracy, a heat insulating plate 14 is added to the side surface of the heat absorber 12 in contact with the probe housing 16, and a conductive adhesive is coated on the periphery of the heat absorber 12 in contact with the probe housing 16 for sealing.

Specifically, as shown in fig. 2, a heat insulating plate 14 is disposed on a side of the heat absorbing component facing away from the filter glass 11, and the heat insulating plate 14 is used for preventing heat diffusion of the heat absorber 12 and the resistance wire sensor 13, maintaining stability of heat absorption, and further ensuring accuracy of laser energy test.

Further, in order to ensure that the resistance wire sensor 13 can be arranged and fixed according to the requirement, the resistance wire sensor 13 is fixedly connected with the heat absorber 12 through coating heat conducting glue.

In one embodiment of the utility model, the resistance wire sensor 13 is arranged on the side of the heat absorber 12 facing the filter glass 11 in a manner of continuously bending in an "S" shape.

In one embodiment of the present utility model, the resistance wire sensor 13 is a platinum resistance wire sensor. Platinum wire sensors are among the most accurate sensors and can be used to measure temperatures between-200 ℃ and +850 ℃.

As shown in fig. 2, the probe assembly 1 further includes: a socket 15 and a data acquisition board 17; the socket 15 is used for connecting with the control host assembly 2; the data acquisition board 17 is used for acquiring the voltage change value of the resistance wire sensor 13 and measuring the ambient temperature.

Further, the probe assembly 1 further comprises: a probe housing 16 and a support 18; the heat absorber assembly, socket 15 and data acquisition board 17 are disposed inside the probe housing 16; the filter glass 11 is disposed on the side of the probe housing 16, and the probe housing 16 is supported by the support 18.

Specifically, the data acquisition board 17 acquires the voltage variation value of the resistance wire sensor 13 and measures the ambient temperature, and is connected to the control host assembly 2 through the socket 15.

Further, as shown in fig. 2, the portion of the periphery of the heat absorber 12 in contact with the probe housing 16 is sealed with a conductive adhesive.

In one embodiment of the utility model, the probe assembly 1 consists of a filter glass 11, a heat absorber 12, a resistance wire sensor 13, a heat insulation plate 14, a probe shell 16, a socket 15, a data acquisition plate 17 and a support 18.

In practice, the filter glass 11 is used for homogenizing the received laser light spot; the heat absorber 12 is used for receiving incident laser light and converting the incident laser light into heat energy to generate temperature rise change; the resistance wire sensor 13 is used for converting heat conducted by the heat absorber into resistance change, so that voltage on the bridge is changed; the heat shield 14 is used for blocking rapid diffusion of heat; the probe housing 16 is used for supporting and protecting the inside of the heat absorber 12 and the like; the socket 15 is used for connecting the probe cable 3 so as to ensure data interaction between the probe assembly 1 and the control host assembly 2; the support 18 is used for stable support and position adjustment of the probe assembly 1 as a whole.

In one embodiment of the present utility model, as shown in fig. 3, the control host assembly 2 includes: reinforcing the display 21 and the control circuit board 24; the ruggedized display 21 is used for displaying information and parameter inputs; the control circuit board 24 is used for data processing and power control.

As shown in fig. 3, the control host assembly 2 further includes: a cabinet housing 27, a switch button 22, and a cabinet outlet.

Specifically, the cabinet housing 27 is used to support the ruggedized display 21, the switch buttons 22, the control circuit board 24, and the like, and to protect the interior; the switch button 22 is used to switch the control host assembly 2 on and off.

In particular, the cabinet socket is used for connection with the power cable 5 and the data cable 4 in order to power and export data to the tester.

Specifically, the control circuit board 24 is fixed at the bottom of the cabinet housing 27, the switch button 22 is placed at the front end of the cabinet housing 27 for convenient operation, and the cabinet socket is fixed on the back cover plate 26.

In the present utility model, the display 21 is reinforced as an outsourcing member, which itself has satisfied the requirement of electromagnetic compatibility, and is fixed to the front panel of the cabinet housing 27.

Further, the back cover plate 26 of the cabinet housing 27 is detachably connected, so that the installation and maintenance are facilitated. The rear cover plate 26 and the cabinet housing 27 are sealed with a conductive sealing tape 25 or with a conductive sealing adhesive, so that electromagnetic leakage can be prevented.

Further, a handle 23 is provided on the cabinet housing 27, and the position of the control host assembly 2 is shifted by the handle 23.

Further, as shown in fig. 1, the laser energy tester of the present utility model further includes a probe cable 3, a data cable 4, and a power supply cable 5.

Specifically, the probe assembly 1 and the control host assembly 2 are connected by a probe cable 3, and the probe cable 3 is used to realize data transmission between the probe assembly 1 and the control host assembly 2.

Specifically, the control host assembly 2 is connected to a power supply through a power supply cable 5.

In particular, the data cable 4 is used to enable data export of the control host assembly 2. The control host component 2 is connected to a computer or a data storage (for example, a mobile hard disk) through a data cable 4, so that the data processed by the control host component 2 is exported to the computer or the data storage.

In the research of laser test equipment, the concept of damage threshold is often adopted to express the laser damage resistance of an optical element under certain conditions, and the laser damage of the optical element is a linear and nonlinear process generated by the interaction of impurities and defects with laser, and the laser damage relates to various physical mechanisms including photoionization, avalanche ionization, magazine absorption, self-focusing, stimulated brillouin scattering, nonlinear absorption, optical breakdown, laser plasma and the like in the interaction process of the laser and the optical element.

In the design of the laser energy tester, the laser damage threshold of the heat absorber 12 is considered, and the material of the heat absorber 12 is reasonably selected. Preferably, the heat absorber 12 is made of a material having a small specific heat capacity.

In the utility model, the filter glass 11 of the probe assembly 1 is used as a laser energy receiving window, the heat absorber 12 converts laser energy into heat energy, and the resistance wire sensor 13 changes resistance after absorbing heat; the control host component 2 is a data processing unit of the product, and collects the variation of the resistance, so as to display the processed data.

The implementation process comprises the following steps: the incident laser enters the probe assembly 1 after natural light is filtered by the filter glass 11, then acts on the heat absorber 12 of the probe assembly 1, is absorbed by the heat absorber 12 to raise the temperature of the probe assembly, the heat absorber 12 after temperature rise transmits heat to the resistance wire sensor 13 through heat transfer to change the resistance of the resistance wire sensor, voltage change is further formed, the changed deviation value is processed by the data acquisition board 17, and then is transmitted to the control host assembly 2 through the probe cable 3, and the temperature compensation processing is carried out and then the laser energy value is converted into a corresponding laser energy value.

The embodiment improves the aspects of thermal structure design of the probe, electrical measurement compatibility design of the control host, and the like, and has the function of testing short pulse and high-energy laser energy. However, the present utility model is not limited to the above embodiment, and the technique can be applied to other laser energy testers.

The utility model is not only used for measuring the laser energy of fixed caliber and short pulse, but also used for measuring the pulse laser energy of millisecond level and measuring the laser energy of other calibers.

Notably, are: the devices such as the filter glass 11, the heat absorber 12, the reinforced display 21 and the like related to the utility model are materials or products existing in the prior art, and do not belong to the improvement of the materials and do not influence the implementation of the technical scheme of the utility model. In addition, the data acquisition board 17 and the control circuit board 24 in the present utility model also belong to products that can be obtained from the prior art by those skilled in the art, and are not described in detail in the present utility model, and do not affect implementation of the technical scheme of the present utility model.

Compared with the prior art, the technical scheme provided by the embodiment has at least one of the following beneficial effects:

1. the laser energy tester converts laser energy into internal energy for testing, has small influence on testing precision due to the pulse width range and the wavelength range of laser, and has good testing precision.

2. The control host assembly of the laser energy tester consists of a reinforced display, a high-precision acquisition control circuit board, a shell, a rear cover and the like. The reinforced display terminal itself has met the requirements of electromagnetic compatibility as an outsourcing piece.

3. The laser energy tester of the utility model realizes sealing between the rear cover plate 26 and the cabinet shell 27 by using the conductive sealing adhesive tape or the conductive sealing adhesive, and can prevent electromagnetic leakage.

4. The laser energy tester consists of a probe assembly 1, a control host assembly 2 and a cable, wherein incident laser acts on a heat absorber 12 of the probe assembly 1, is absorbed by the heat absorber 12 to raise the temperature of the probe assembly, and is heated and transmitted to a resistance wire sensor 13 to change the resistance of the probe assembly, so that voltage change is formed, the changed deviation value is processed by a data acquisition board 17, and then is transmitted to the control host assembly 2 through the probe cable 3, and is converted into a corresponding energy value after temperature compensation.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims

1. A laser energy tester, comprising: a probe assembly (1) and a control host assembly (2); the probe assembly (1) comprises: a filter glass (11) and a heat absorbing assembly; the heat absorbing assembly includes: a heat absorber (12) and a resistance wire sensor (13); the filter glass (11) is a laser energy receiving window; the heat absorber (12) is capable of converting laser energy into thermal energy; the resistance wire sensor (13) is fixed on one side of the heat absorber (12) facing the filter glass (11), the resistance wire sensor (13) can absorb heat and raise temperature, and the resistance of the resistance wire sensor (13) changes along with the change of temperature;

the control host component (2) is a data processing unit and can collect the resistance variation of the resistance wire sensor (13) so as to display the processed laser energy data.

2. The laser energy tester according to claim 1, characterized in that the control host assembly (2) comprises: -stiffening the display (21) and the control circuit board (24); -said ruggedized display (21) for displaying information and parameter inputs; the control circuit board (24) is used for data processing and power control.

3. The laser energy tester according to claim 2, characterized in that the side of the heat absorbing assembly facing away from the filter glass (11) is provided with a heat insulating plate (14) for preventing heat diffusion.

4. A laser energy tester as claimed in claim 3, characterised in that the resistance wire sensor (13) is connected to the heat absorber (12) by means of a coating of a thermally conductive glue.

5. The laser energy tester according to any one of claims 2-4, wherein the probe assembly (1) further comprises: a socket (15) and a data acquisition board (17); the socket (15) is used for connecting the control host component (2); the data acquisition board (17) is used for acquiring the voltage change value and the ambient temperature of the resistance wire sensor (13).

6. The laser energy tester according to claim 5, characterized in that the probe assembly (1) further comprises: a probe housing (16) and a support (18); the heat absorber assembly, the socket (15) and the data acquisition plate (17) are arranged inside the probe shell (16); the filter glass (11) is arranged on the side face of the probe shell (16), and the probe shell (16) is supported through the support (18).

7. The laser energy tester according to claim 6, wherein the control host assembly (2) further comprises: a cabinet housing (27) and a switch button (22); the cabinet housing (27) is used for supporting the reinforced display (21) and the control circuit board (24); the switch button (22) is used for switching on and switching off the control host assembly (2).

8. The laser energy tester as claimed in claim 6 or 7, wherein the portion of the periphery of the heat absorber assembly in contact with the probe housing (16) is sealed with a conductive adhesive.

9. The laser energy tester according to claim 1, further comprising a probe cable (3), the probe cable (3) being used for data transmission between the probe assembly (1) and the control host assembly (2).

10. The laser energy tester of claim 1, further comprising: a data cable (4) and a power supply cable (5); the control host assembly (2) is connected with a power supply through the power supply cable (5); the data cable (4) is used for realizing data export of the control host component (2).