CN112014073A - Laser detection device and laser detection method for alignment of high-energy laser beam - Google Patents

Abstract

The invention discloses a laser detection device and a laser detection method for high-energy laser beam alignment. The laser detection device includes a base and a positioning seat; the base includes a bottom plate, a positioning seat mounting structure fixed on the bottom plate, and a connection structure fixed on the bottom plate, the positioning seat mounting structure and the connecting structure are respectively arranged on both sides of the bottom plate, and the bottom plate is provided with A circular bottom plate light hole; the positioning seat includes a positioning pressure plate and a matching structure fixed on the positioning pressure plate, and the matching structure is used for detachable connection to the positioning seat mounting structure, so as to realize the detachable connection between the base and the positioning seat, and the positioning pressure plate A circular centering through hole with a diameter smaller than the bottom plate light-passing hole is arranged therethrough; when the positioning seat is connected to the base, the bottom plate light-passing hole and the centering through hole are concentric, and the positioning pressing plate can press the bottom plate. The device makes the shape and position of the laser imaging paper fixed during the detection process, and can more conveniently apply the laser imaging paper to the alignment detection of the optical path of the high-energy laser beam.

Description

Laser detection device and laser detection method for high-energy laser beam alignment

technical field

The invention relates to the technical field of laser equipment, in particular to a laser detection device and a laser detection method for high-energy laser beam alignment.

Background technique

In the construction of high-energy laser light paths for various applications and laboratory platforms, it is very important to ensure the accuracy of the direction of the laser beam. Most of the commonly used high-energy lasers are not in the visible light band and cannot be seen by the naked eye. In addition, high-energy lasers are easy to damage the detection device, which brings certain difficulties to the alignment of high-energy laser beams.

Commonly used non-visible light band laser detection devices are infrared detection cards and laser imaging paper. Among them, the laser imaging paper is suitable for spot detection of high-energy lasers, and the light spot is evaluated by the spot traces left by the laser on the imaging paper. However, because the imaging paper is disposable and has no fixation, it is difficult to conveniently use it in the detection of the alignment of the laser light path.

Therefore, how to more conveniently apply the laser imaging paper to the detection of the optical path alignment of the high-energy laser beam is a technical problem that needs to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a laser detection device, which can more conveniently apply the laser imaging paper to the alignment detection of the optical path of the high-energy laser beam. Another object of the present invention is to provide a laser detection method for high-energy laser beam alignment using the above-mentioned laser detection device.

To achieve the above object, the present invention provides the following technical solutions:

A laser detection device includes a base and a positioning seat; the base includes a base plate, a positioning base mounting structure fixed on the base plate, and a connection structure fixed on the base plate, the positioning base mounting structure and the connection structure The structures are respectively arranged on both sides of the bottom plate, and the bottom plate is provided with a circular bottom plate light hole; the positioning seat includes a positioning pressure plate and a matching structure fixed on the positioning pressure plate, and the matching structure is used for Removably connected to the positioning seat mounting structure to realize the detachable connection between the base and the positioning seat, the positioning pressure plate is provided with a circular centering through hole with a diameter smaller than the light through hole of the bottom plate. ; When the positioning seat is connected to the base, the light-passing hole of the base plate is concentric with the centering through-hole, and the positioning pressing plate can press the base plate.

Preferably, a base ring is fixed on the side of the base plate on which the positioning seat mounting structure is arranged, and two imaging paper installation grooves are opened on the base ring, and the two imaging paper installation grooves are opposite to each other. On both sides of the bottom plate light-passing hole, the developing paper mounting groove penetrates the base ring along the radial direction of the bottom plate light-passing hole, and a part of the edge of the developing paper mounting groove is located on the bottom plate.

Preferably, the imaging paper installation groove is a U-shaped groove and the bottom of the groove is located on the bottom plate.

Preferably, the end points of the groove bottoms of the two imaging paper installation grooves are respectively four vertices of a virtual rectangle, and the virtual rectangle can cover the light through hole of the bottom plate.

Preferably, the positioning seat mounting structure is an internal thread provided on the base ring, and the matching structure is an external thread that is threadedly matched with the positioning seat mounting structure.

Preferably, the positioning seat includes a positioning ring fixed on the positioning pressure plate, the positioning ring is a circular ring structure concentric with the centering through hole, and the positioning pressure plate is a circular ring concentric with the centering through hole The matching structure is arranged on the outer peripheral surface of the positioning ring and/or the positioning pressing plate, and the base ring is a circular ring structure concentric with the light-passing hole of the bottom plate.

Preferably, after the positioning base is connected to the base and the positioning pressure plate is pressed against the base plate, the positioning ring part structure protrudes from the base ring along the axial direction of the light through hole of the base plate.

Preferably, a connecting ring is fixed on the side of the base plate on which the connecting structure is arranged, the connecting structure is an internal thread provided on the connecting ring, and the connecting ring is concentric with the light-passing hole of the base plate. Ring structure.

Preferably, a linear direction marking structure is provided on the end surface of the base ring away from the bottom plate.

A laser detection method for high-energy laser beam alignment, using the above-mentioned laser detection device, the detection method includes:

Install laser imaging paper on the base, and the imaging surface of the laser imaging paper faces the light through hole of the base plate;

connecting the positioning seat on the base, so that the bottom plate and the positioning pressing plate clamp the laser imaging paper;

The base is installed at the detection position, and the axis of the light-passing hole of the base plate is collinear with the centerline of the reference optical path;

The high-energy laser beam to be measured is irradiated on the laser imaging paper through the through hole of the base plate to generate a light spot;

Remove the base from the detection position, and pierce the laser imaging paper with a needle through the centering through hole to form a center hole;

The positions of the light spot and the central hole are compared to determine whether the center of the high-energy laser beam is aligned with the centerline of the reference optical path.

The laser detection device provided by the present invention includes a base and a positioning seat; the base includes a base plate, a positioning base mounting structure fixed on the base plate, and a connection structure fixed on the base plate, and the positioning base mounting structure and the connecting structure are respectively arranged on both sides of the base plate , the bottom plate is provided with a circular bottom plate light hole; the positioning seat includes a positioning pressure plate and a matching structure fixed on the positioning pressure plate, and the matching structure is used for detachable connection to the positioning seat mounting structure to realize the detachable base and positioning seat. Connection, the positioning platen is provided with a circular centering through hole with a diameter smaller than the bottom plate light hole; when the positioning seat is connected to the base, the bottom plate light hole and the centering hole are concentric, and the positioning platen can press the bottom plate .

The laser detection device does not require complicated devices and expensive detection materials. The laser imaging paper can be pressed and shaped through the base and the positioning seat, and then the laser detection device is installed in the detection position, so that the shape of the laser imaging paper and the The position is fixed, the light-through hole on the bottom plate can delineate the use range of the laser imaging paper, and the use range of the laser imaging paper can be centered by using the centering through hole, which provides a reference for judging whether the beam is skewed. In addition, Since the base and the positioning seat are detachable and connected split structures, the laser imaging paper can be taken out and replaced after use. The operation is simple and the cost is low. accurate detection.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

1 is a schematic structural diagram of a specific embodiment 1 of a laser detection device provided by the present invention;

2 is a schematic structural diagram of a base in Embodiment 1 of the laser detection device provided by the present invention;

3 is a schematic structural diagram of a positioning seat in the first embodiment of the laser detection device provided by the present invention;

4 is a schematic diagram of an application example of the specific embodiment 1 of the laser detection device provided by the present invention;

5 is a schematic diagram of the shape of a laser imaging paper that can be used in Embodiment 1 of the laser detection device provided by the present invention;

FIG. 6 is a positional relationship diagram of the imaging paper installation slot and the light-passing hole of the bottom plate of the specific embodiment 1 of the laser detection device provided by the present invention;

FIG. 7 is a schematic structural diagram of the base in the second embodiment of the laser detection device provided by the present invention.

Reference number:

casing 1;

Base 2, base plate 21, base plate light hole 211, base ring 22, positioning seat mounting structure 221, imaging paper mounting groove 222, connecting ring 23, direction marking structure 24;

The positioning seat 3, the positioning pressure plate 31, the centering through hole 311, the positioning ring 32, the matching structure 321;

Laser imaging paper 4.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The core of the invention is to provide a laser detection device, which can more conveniently apply the laser imaging paper to the alignment detection of the optical path of the high-energy laser beam. Another core of the present invention is to provide a laser detection method for high-energy laser beam alignment using the above-mentioned laser detection device.

It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

A specific embodiment of the laser detection device provided in this embodiment includes a base 2 and a positioning seat 3 .

The base 2 includes a base plate 21 , a positioning seat mounting structure 221 fixed on the base plate 21 , and a connection structure fixed on the base plate 21 . The positioning seat mounting structure 221 and the connecting structure are respectively disposed on both sides of the bottom plate 21 . The positioning seat mounting structure 221 is used to connect the positioning seat 3 to realize the detachable connection between the base 2 and the positioning seat 3, and the positions of the two are relatively fixed after the connection. The connection structure is used to fix the base 2 at the detection position. The bottom plate 21 is provided with a circular bottom plate light-passing hole 211 therethrough.

The positioning base 3 includes a positioning pressure plate 31 and a matching structure 321 fixed on the positioning pressure plate 31 . The matching structure 321 is used to be detachably connected to the positioning seat mounting structure 221 . A centering through hole 311 having a circular shape and a diameter smaller than the light through hole 211 of the bottom plate is formed through the positioning pressing plate 31 .

In the state where the positioning base 3 is connected to the base 2, the bottom plate light hole 211 and the centering through hole 311 are concentric, and the positioning pressure plate 31 can press the bottom plate 21, and the positioning pressure plate 31 and the bottom plate 21 can be clamped by the press fit between the positioning pressure plate 31 and the bottom plate 21. The laser imaging paper 4 is positioned, and the laser imaging paper 4 is exposed to the optical path of the detected laser through the light-passing hole 211 of the bottom plate, and is irradiated by the laser, leaving ablation marks.

When performing optical path calibration laser detection, place the laser imaging paper 4 on the bottom plate 21 with the imaging surface facing the light through hole 211 of the bottom plate, and connect the positioning base 3 to the base 2 so that the positioning pressure plate 31 presses the laser imaging paper 4 on the bottom plate 21 . Install the base 2 at the detection position of the optical path system. Specifically, ensure that the central axis of the light passage hole 211 on the base plate is collinear with the center line of the reference optical path of the optical path system, and ensure that the central axis of the light passage hole 211 on the base plate represents the detection light path of this section. Standard optical axis center. When the laser is incident from the light through hole 211 of the base plate, a light spot is left on the laser imaging paper 4 . Remove the laser detection device, use a small needle to pierce the laser imaging paper 4 through the centering through hole 311, so that the center position of the optical axis is displayed on the side where the spot leaves a trace, and the laser beam is judged by the deviation of the spot and the center position. The deviation of the center from the reference optical path centerline of the optical path system. Wherein, the reference optical path centerline is usually the center axis of the optical path system.

Among them, in actual use, the base 2 of the corresponding size should be selected according to the size of the laser spot. Through the bottom plate light through hole 211 . For example, the diameter of the light spot is 5 mm, and the diameter of the light through hole 211 of the base plate is 5.5 mm. Wherein, the surface of the positioning pressing plate 31 for pressing the laser imaging paper 4 is preferably a solid plane to ensure the pressing effect.

Wherein, since the centering through hole 311 is used for centering, the diameter is preferably set to a small value, for example, 1 mm, as long as the needle-like structure can pass through to pierce the laser imaging paper 4 .

The laser detection device provided in this embodiment does not require complicated devices and expensive detection materials. The laser imaging paper 4 can be pressed and shaped through the base 2 and the positioning seat 3, and then the laser detection device is installed at the detection position, so that during the detection process The shape and position of the laser imaging paper 4 are fixed, the bottom plate through hole 211 can delineate the use range of the laser imaging paper 4, and the centering through hole 311 can be used to center the use range of the laser imaging paper 4, Provide a reference for judging whether the beam is skewed. In addition, since the base 2 and the positioning base 3 are detachable and connected split structures, the laser imaging paper 4 can be taken out and replaced after use, which is easy to operate, low in cost, and more convenient. The laser imaging paper 4 is conveniently applied to the optical path alignment detection of the high-energy laser beam.

Further, please refer to FIG. 2 , a base ring 22 is fixed on the bottom plate 21 , and the base ring 22 and the positioning seat mounting structure 221 are fixed on the same side of the base 2 . Preferably, the base ring 22 is a circular ring structure that is coaxial with the base plate light through hole 211 . The base ring 22 is provided with two developing paper installation grooves 222 . The two developing paper installation slots 222 are oppositely disposed on both sides of the light through hole 211 of the bottom plate, and preferably, the two developing paper installation slots 222 are mirror-symmetrical. The developing paper installation groove 222 penetrates through the base ring 22 along the radial direction of the light through hole 211 of the base plate, and a part of the edge of the developing paper installation groove 222 is located on the base plate 21 .

Before connecting the positioning base 3, install the laser imaging paper 4 on the base 2 to make it fit against the bottom plate 21, wherein the laser imaging paper 4 partially extends into the imaging paper installation slot 222, and the imaging paper installation slot 222 The laser imaging paper 4 can be clamped, and the cut laser imaging paper 4 can be placed and fixed in the imaging paper installation slot 222, which can avoid the laser imaging paper 4 sticking to the laser imaging paper 4 during the process of connecting the positioning base 3 or the detection process. The bottom plate 21 rotates, and the positional relationship between the bottom plate 21 and the laser imaging paper 4 can be further easily determined. In addition, for the laser imaging paper 4, the shape and size of the laser imaging paper 4 should be adjusted according to the size and structure of the imaging paper installation slot 222, so as to avoid the laser imaging paper 4 from shaking or tilting in the imaging paper installation slot 222 .

Wherein, preferably, the imaging paper installation groove 222 is a U-shaped groove and the bottom of the groove is located on the bottom plate 21, that is to say, in the axial direction along the light passage hole 211 of the bottom plate, the imaging paper installation groove 222 is one-sided open. Based on the U-shaped structure, during the installation process of the laser imaging paper 4, in addition to being able to extend into the two imaging paper installation slots 222 in sequence along the radial direction of the light-through hole 211 of the base plate, it can also extend along the light-through hole 211 of the base plate. are installed in the two imaging paper installation slots 222 at the same time. In addition, the size of the imaging paper installation groove 222 has little restriction on the shape of the laser imaging paper 4, even if the laser imaging paper 4 has a special-shaped structure with a middle convex as shown in FIG. 5, it can be smoothly installed in the axial direction. Like paper mounting slot 222.

Further, the end points of the groove bottoms of the two developing paper installation grooves 222 are respectively four vertices of a virtual rectangle, and the virtual rectangle can cover the bottom plate light through hole 211 . Specifically, as shown in FIG. 6 , the bottom of one of the developing paper installation slots 222 is an arc AB, the two end points are points A and B respectively, and the bottom of the other developing paper installation slot 222 is an arc CD, The two endpoints are point C and point D respectively, and the four endpoints are the four vertices of the virtual rectangle ABDC, the virtual rectangle can encircle the bottom plate light hole 211 in it, so, the shape of the laser imaging paper 4 is set. Convenience is provided. Before installing the laser imaging paper 4, the laser imaging paper 4 can be made into two rectangles whose opposite sides are the same length as the straight line AB.

Further, please refer to FIG. 2 , the positioning seat mounting structure 221 is an internal thread provided on the base ring 22 , preferably, the internal thread can be provided on the end of the base ring 22 away from the bottom plate 21 . The matching structure 321 is an external thread that is screwed with the positioning seat mounting structure 221 . The positioning seat 3 and the base 2 are directly connected by thread, which is convenient for disassembly and assembly. Of course, in other embodiments, the positioning seat mounting structure 221 and the matching structure 321 may be provided in a matching snap structure, and the detachable connection is realized by snap connection.

Wherein, preferably, the positioning base 3 includes a positioning ring 32 fixed to the positioning pressing plate 31 . The positioning ring 32 is a circular ring structure concentric with the centering through hole 311 , and the positioning pressing plate 31 is a circular ring plate concentric with the centering through hole 311 . The matching structure 321 is arranged on the outer peripheral surface of the positioning ring 32 and/or the positioning pressing plate 31. According to the position of the inner thread on the base ring 22, the outer thread serving as the matching structure 321 is adaptively only on the positioning ring 32 or only on the positioning ring 32. A part of the positioning ring 32 and the positioning pressure plate 31 may be provided on the pressing plate 31 . The base ring 22 is a circular ring structure concentric with the light through hole 211 of the base plate. Since the positioning ring 32 is a hollow annular structure, the needle threading operation of the centering through hole 311 will not be affected. At the same time, the axial length of the positioning seat 3 is increased due to the setting of the positioning ring 32, which can improve the positioning of the positioning seat 3 on the base 2. Installation stability.

More preferably, after the positioning base 3 is connected to the base 2 and the positioning pressing plate 31 presses the bottom plate 21, a part of the positioning ring 32 protrudes from the base ring 22 along the axial direction of the centering through hole, so that during the disassembly process, it is possible to protrude toward the base ring 22. The outgoing part exerts force to unscrew the positioning base 3 , which facilitates the disassembly of the positioning base 3 .

Further, a connecting ring 23 is fixed on the side of the bottom plate 21 on which the connecting structure is arranged, and the connecting structure is an internal thread provided on the connecting ring 23 . After the connection ring 23 is threadedly connected to the detection positioning structure corresponding to the detection position, since the connection ring 23 is concentric with the base plate light-passing hole 211, the positional relationship between the central axis of the base plate light-passing hole 211 and the detection and positioning structure is easy to determine. form a concentric positional relationship. Of course, in other embodiments, the connection structure may also be configured as a buckle, a magnet, or the like to achieve fixation.

Further, please refer to FIG. 2 , the end surface of the base ring 22 away from the bottom plate 21 is provided with a linear direction marking structure 24 . Specifically, the setting of the direction marking structure 24 can be realized by engraving or spraying. The setting of the direction marking structure 24 further provides a reference object, which is convenient to distinguish the deviation direction of the center of the light spot relative to the centering through hole 311, and is convenient to determine the adjustment direction for adjusting the outgoing laser light.

Specifically, the detection device in this embodiment is docked to the opto-mechanical assembly of the casing 1 with SM1 external thread to illustrate its working principle. Of course, the application object is not limited to this opto-mechanical assembly:

When the optical path calibration laser detection is performed, the laser imaging paper 4 is made into a long strip and inserted into the positions of the two imaging paper installation slots 222. The imaging surface of the laser imaging paper 4 faces the light through hole 211 of the base plate. The thread between the ring 22 and the positioning ring 32 makes the positioning pressing plate 31 closely adhere to the base 2 , so that the positioning pressing plate 31 presses the laser imaging paper 4 . The base 2 is screwed onto the sleeve 1, and at this time, the centering through hole 311 is collinear with the central axis of the optomechanical assembly. When the laser is incident on the detection device through the sleeve 1, a light spot is left on the imaging paper, and the position of the marking structure 24 on the base 2 is remembered. Remove the detection device, use a small needle to penetrate the laser imaging paper 4 through the centering through hole 311 to find the central axis of the optical path system, so as to judge the deviation of the actual laser beam center relative to the central axis of the optical-mechanical assembly.

Obviously, the imaging paper installation slot 222 is not limited to be set as a U-shaped slot, for example, as shown in FIG. 7 , in another specific embodiment, the imaging paper installation slot 222 is a rectangular hole-shaped structure.

In addition to the above laser detection device, the present invention also provides a laser detection method for high-energy laser beam alignment, which can be specifically applied to the laser detection device provided in any of the above embodiments, and the beneficial effects may refer to the above embodiments accordingly.

The detection method specifically includes:

Install the laser imaging paper 4 on the base 2, and the imaging surface of the laser imaging paper 4 faces the light through hole 211 of the bottom plate;

Connect the positioning base 3 to the base 2, so that the bottom plate 21 and the positioning pressure plate 31 clamp the laser imaging paper 4;

The mounting base 2 is at the detection position, and the axis of the light-passing hole 211 of the base plate is collinear with the centerline of the reference optical path;

The high-energy laser beam to be measured is irradiated on the laser imaging paper 4 through the light-through hole 211 of the bottom plate to generate a light spot;

Remove the base 2 from the detection position, and pierce the laser imaging paper 4 with a needle through the centering through hole 311 to form a center hole;

Compare the positions of the spot and the center hole to determine whether the center of the high-energy laser beam is aligned with the centerline of the reference beam path.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The laser detection device and the laser detection method for high-energy laser beam alignment provided by the present invention have been described in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. A laser detection device, characterized in that it comprises a base (2) and a positioning seat (3); the base (2) comprises a base plate (21), a positioning base mounting structure fixed on the base plate (21) (221) and a connecting structure fixed on the bottom plate (21), the positioning seat mounting structure (221) and the connecting structure are respectively provided on both sides of the bottom plate (21), the bottom plate (21) A circular bottom plate light-passing hole (211) is formed therethrough; the positioning seat (3) includes a positioning pressure plate (31) and a matching structure (321) fixed on the positioning pressure plate (31), and the matching structure ( 321) is used to be detachably connected to the positioning seat mounting structure (221), so as to realize the detachable connection between the base (2) and the positioning seat (3). A centering through hole (311) having a circular shape and a diameter smaller than that of the base plate light-passing hole (211); when the positioning seat (3) is connected to the base (2), the base plate light-passing hole (211) ) is concentric with the centering through hole (311), and the positioning pressing plate (31) can press the bottom plate (21). 2 . The laser detection device according to claim 1 , wherein a base ring ( 22 ) is fixed on the side of the base plate ( 21 ) on which the positioning seat mounting structure ( 221 ) is arranged, and the base ring (22) are provided with two developing paper installation slots (222), and the two developing paper installation slots (222) are oppositely arranged on both sides of the light through hole (211) of the base plate, and the developing paper is installed The groove (222) penetrates the base ring (22) along the radial direction of the base plate light-passing hole (211), and a part of the edge of the imaging paper installation groove (222) is located on the base plate (21). 3 . The laser detection device according to claim 2 , wherein the imaging paper installation groove ( 222 ) is a U-shaped groove and the bottom of the groove is located on the bottom plate ( 21 ). 4 . 4. The laser detection device according to claim 3, wherein the end points of the groove bottoms of the two imaging paper installation grooves (222) are respectively four vertices of a virtual rectangle, and the virtual rectangle can be Cover the bottom plate light through hole (211). 5. The laser detection device according to any one of claims 2 to 4, wherein the positioning seat mounting structure (221) is an internal thread provided on the base ring (22), and the matching structure (321) is an external thread that is threadedly matched with the positioning seat mounting structure (221). 6 . The laser detection device according to claim 5 , wherein the positioning seat ( 3 ) comprises a positioning ring ( 32 ) fixed on the positioning pressure plate ( 31 ), and the positioning ring ( 32 ) is connected with the positioning plate ( 31 ). 7 . The centering through hole (311) is concentric with a circular ring structure, the positioning pressure plate (31) is a circular ring plate concentric with the centering through hole (311), and the matching structure (321) is provided on the positioning ring (32) and/or on the outer peripheral surface of the positioning pressing plate (31), the base ring (22) is a circular ring structure concentric with the light through hole (211) of the base plate. 7 . The laser detection device according to claim 6 , wherein the positioning seat ( 3 ) is connected to the base ( 2 ) and after the positioning pressing plate ( 31 ) presses the bottom plate ( 21 ) , and a part of the structure of the positioning ring (32) protrudes from the base ring (22) along the axial direction of the light-passing hole (211) of the base plate. 8. The laser detection device according to any one of claims 1 to 4, wherein a connecting ring (23) is fixedly provided on the side of the bottom plate (21) on which the connecting structure is arranged, and the connecting structure is The inner thread provided on the connecting ring (23) is a circular ring structure concentric with the light-passing hole (211) of the base plate. 9. The laser detection device according to any one of claims 2 to 4, wherein a linear direction marking structure (24) is provided on the end surface of the base ring (22) away from the bottom plate (21) . 10. A laser detection method for high-energy laser beam alignment, wherein the laser detection device according to any one of claims 1 to 9 is applied, and the detection method comprises: A laser imaging paper (4) is installed on the base (2), and the imaging surface of the laser imaging paper (4) faces the light through hole (211) of the base plate; connecting the positioning seat (3) to the base (2), so that the bottom plate (21) and the positioning pressing plate (31) clamp the laser imaging paper (4); The base (2) is installed at the detection position, and the axis of the light-passing hole (211) of the base plate is collinear with the centerline of the reference optical path; causing the high-energy laser beam to be measured to be irradiated on the laser imaging paper (4) through the base plate light-passing hole (211) to generate a light spot; Remove the base (2) from the detection position, and pierce the laser imaging paper (4) with a needle through the centering through hole (311) to form a center hole; The positions of the light spot and the central hole are compared to determine whether the center of the high-energy laser beam is aligned with the centerline of the reference optical path.

Images