CN112014073A - Laser detection device and laser detection method for alignment of high-energy laser beam - Google Patents
Laser detection device and laser detection method for alignment of high-energy laser beam Download PDFInfo
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- CN112014073A CN112014073A CN202010916088.7A CN202010916088A CN112014073A CN 112014073 A CN112014073 A CN 112014073A CN 202010916088 A CN202010916088 A CN 202010916088A CN 112014073 A CN112014073 A CN 112014073A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/04—Optical benches therefor
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Abstract
The invention discloses a laser detection device and a laser detection method for alignment of a high-energy laser beam. The laser detection device comprises a base and a positioning seat; the base comprises a bottom plate, a positioning seat mounting structure fixed on the bottom plate and a connecting structure fixed on the bottom plate, the positioning seat mounting structure and the connecting structure are respectively arranged on two sides of the bottom plate, and the bottom plate is provided with a circular bottom plate light through hole in a penetrating manner; the positioning seat comprises a positioning pressing plate and a matching structure fixed on the positioning pressing plate, the matching structure is detachably connected with the positioning seat mounting structure to realize the detachable connection of the base and the positioning seat, and a circular centering through hole with the aperture smaller than that of the bottom plate light through hole penetrates through the positioning pressing plate; the positioning seat is connected under the state of base, and the bottom plate passes through the unthreaded hole and is concentric with the centering through-hole, and the positioning pressure plate can compress tightly the bottom plate. The device makes the shape and the position of laser image paper have fixity in the testing process, can be applied to the alignment of high energy laser beam light path with laser image paper more conveniently and detect.
Description
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 alignment of a high-energy laser beam.
Background
In various applications and the construction of high-energy laser light paths of laboratory platforms, it is important to ensure the direction accuracy of laser beams. Most common high-energy laser is not in a visible light wave band and cannot be seen by naked eyes, and the high-energy laser easily damages a detection device, so that certain difficulty is brought to alignment of the high-energy laser beam.
Common laser detection devices for non-visible light bands are infrared detection cards and laser image display paper. The laser imaging paper is suitable for spot detection of high-energy laser, and spots are evaluated through spot traces left on the imaging paper by the laser. However, since the image-displaying paper is disposable and non-fixed, it is difficult to use the image-displaying paper conveniently in the laser light path alignment detection.
Therefore, how to more conveniently apply the laser imaging paper to the alignment detection of the high-energy laser beam light path is a technical problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a laser detection apparatus, which can more conveniently apply the laser imaging paper to the alignment detection of the high-energy laser beam light path. Another object of the present invention is to provide a laser detection method of alignment of high-energy laser beam using the above laser detection device.
In order to achieve the purpose, the invention provides the following technical scheme:
a laser detection device comprises a base and a positioning seat; the base comprises a bottom plate, a positioning seat mounting structure fixed on the bottom plate and a connecting structure fixed on the bottom plate, the positioning seat mounting structure and the connecting structure are respectively arranged on two sides of the bottom plate, and the bottom plate is provided with a circular bottom plate light through hole in a penetrating manner; the positioning seat comprises a positioning pressing plate and a matching structure fixed on the positioning pressing plate, the matching structure is detachably connected to the positioning seat mounting structure to realize the detachable connection of the base and the positioning seat, and a circular centering through hole with the aperture smaller than that of the bottom plate light through hole penetrates through the positioning pressing plate; the positioning seat is connected to the base, the bottom plate light through hole is concentric with the centering through hole, and the positioning pressing plate can press the bottom plate tightly.
Preferably, set up on the bottom plate the fixed base ring that is equipped with in one side of positioning seat mounting structure, two video paper mounting grooves have been seted up on the base ring, two the video paper mounting groove is located relatively the bottom plate leads to the unthreaded hole both sides, the video paper mounting groove is followed the bottom plate radially runs through of passing through the unthreaded hole the base ring, just video paper mounting groove part edge is located on the bottom plate.
Preferably, the image paper mounting groove is a U-shaped groove, and the groove bottom is positioned on the bottom plate.
Preferably, the end points of the bottoms of the two image paper mounting grooves are respectively four vertexes of a virtual rectangle, and the virtual rectangle can cover the bottom plate light through hole.
Preferably, the positioning seat mounting structure is an internal thread arranged on the base ring, and the matching structure is an external thread matched with the positioning seat mounting structure through threads.
Preferably, the positioning seat includes the holding ring that is fixed in the positioning pressure plate, the holding ring be with centering through-hole concentric ring structure, the positioning pressure plate be with centering through-hole concentric ring board, cooperation structure is located the holding ring and/or on the peripheral face of positioning pressure plate, the base ring be with the bottom plate leads to the concentric ring structure of unthreaded hole.
Preferably, the positioning seat is connected to the base, and after the positioning pressing plate presses the bottom plate, the structure of the positioning ring protrudes out of the base ring along the axial direction of the light through hole of the bottom plate.
Preferably, a connecting ring is fixedly arranged on one side of the bottom plate, where the connecting structure is arranged, the connecting structure is an internal thread arranged on the connecting ring, and the connecting ring is a circular ring structure concentric with the light through hole of the bottom plate.
Preferably, a linear direction marking structure is arranged on the end face, far away from the bottom plate, of the base ring.
A laser detection method for alignment of high-energy laser beams applies the laser detection device, and the detection method comprises the following steps:
installing laser image paper on the base, wherein an image display surface of the laser image paper faces the bottom plate light through hole;
connecting the positioning seat on the base to enable the base plate and the positioning pressing plate to clamp the laser image display paper;
mounting the base at a detection position, wherein the axis of the bottom plate light through hole is collinear with the center line of the reference light path;
irradiating the high-energy laser beam to be detected on the laser image paper through the bottom plate light through hole to generate light spots;
taking down the base from the detection position, and puncturing the laser image display paper through the centering through hole by using a needle to form a center hole;
and comparing the positions of the light spot and the central hole to determine whether the center of the high-energy laser beam is aligned with the reference light path central line.
The invention provides a laser detection device, which comprises a base and a positioning seat; the base comprises a bottom plate, a positioning seat mounting structure fixed on the bottom plate and a connecting structure fixed on the bottom plate, the positioning seat mounting structure and the connecting structure are respectively arranged on two sides of the bottom plate, and the bottom plate is provided with a circular bottom plate light through hole in a penetrating manner; the positioning seat comprises a positioning pressing plate and a matching structure fixed on the positioning pressing plate, the matching structure is detachably connected with the positioning seat mounting structure to realize the detachable connection of the base and the positioning seat, and a circular centering through hole with the aperture smaller than that of the bottom plate light through hole penetrates through the positioning pressing plate; the positioning seat is connected under the state of base, and the bottom plate passes through the unthreaded hole and is concentric with the centering through-hole, and the positioning pressure plate can compress tightly the bottom plate.
This laser detection device, need not complicated device and high-priced detection material, can compress tightly the design to laser image paper through base and positioning seat, install laser detection device in the detection position again, make shape and the position of laser image paper have the fixity in the testing process, the bottom plate passes through the light hole and can circle the application range of laser image paper, utilize centering through-hole can carry out centering operation to the application range of laser image paper, whether incline for judging the light beam and provide the reference object, in addition, because base and positioning seat are for dismantling the split type structure of connection, laser image paper can follow after the use and take out and change, and the operation is thus simple, the cost is lower, it is detected to be applied to the alignment of high energy laser beam light path with laser image paper more conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first embodiment of a laser detection apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a base in an embodiment of a laser detection apparatus according to the present invention;
fig. 3 is a schematic structural diagram of a positioning seat in an embodiment of the laser detection apparatus provided in the present invention;
FIG. 4 is a schematic diagram illustrating an exemplary application of a first embodiment of a laser detection apparatus according to the present invention;
FIG. 5 is a schematic diagram of a laser imaging paper that can be used in an embodiment of the laser detection apparatus of the present invention;
FIG. 6 is a diagram illustrating a positional relationship between an image paper mounting groove and a bottom plate light-passing hole according to a first embodiment of the laser inspection apparatus of the present invention;
fig. 7 is a schematic structural diagram of a base in a second embodiment of the laser detection apparatus according to the present invention.
Reference numerals:
a sleeve 1;
the device comprises a base 2, a bottom plate 21, a bottom plate light through hole 211, a base ring 22, a positioning seat mounting structure 221, an image paper mounting groove 222, a connecting ring 23 and a direction marking structure 24;
the positioning seat 3, the positioning pressing plate 31, the centering through hole 311, the positioning ring 32 and the matching structure 321;
the laser image paper 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, 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 image paper to the alignment detection of the large-energy laser beam light path. The other core of the invention is to provide a laser detection method for aligning high-energy laser beams by applying the laser detection device.
It will be understood that when an element is referred to as being "secured" 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 defined otherwise, 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 terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In an embodiment of the laser detection apparatus provided in this embodiment, the laser detection apparatus includes a base 2 and a positioning seat 3.
The base 2 comprises a bottom plate 21, a positioning seat mounting structure 221 fixed on the bottom plate 21 and a connecting structure fixed on the bottom plate 21. The positioning seat mounting structure 221 and the connecting structure are respectively disposed on two sides of the bottom plate 21. The positioning seat mounting structure 221 is used for connecting the positioning seat 3 to realize detachable connection between the base 2 and the positioning seat 3, and the two positions are relatively fixed after connection. The attachment structure is used to secure the base 2 in the inspection position. A circular bottom plate light through hole 211 is formed in the bottom plate 21 in a penetrating manner.
The positioning socket 3 comprises a positioning pressing plate 31 and a matching structure 321 fixed on the positioning pressing plate 31. The mating structure 321 is adapted to be removably coupled to the positioning socket mounting structure 221. The positioning pressing plate 31 is provided with a circular centering through hole 311 with a diameter smaller than the bottom plate light through hole 211.
Positioning seat 3 is connected under base 2's state, and bottom plate light through hole 211 is concentric with centering through hole 311, and positioning pressure plate 31 can compress tightly bottom plate 21, utilizes the cooperation of compressing tightly between positioning pressure plate 31 and the bottom plate 21 can press from both sides tight location laser image paper 4, and laser image paper 4 passes through bottom plate light through hole 211 and exposes in the light path of the laser that detects, receives laser irradiation, leaves the ablation vestige.
When the light path calibration laser detection is performed, the laser image paper 4 is placed on the bottom plate 21, the image display surface faces the bottom plate light through hole 211, the positioning seat 3 is connected to the base 2, and the positioning pressing plate 31 presses the laser image paper 4 to the bottom plate 21. The base 2 is installed at the detection position of the optical path system, and it is specifically ensured that the central axis of the bottom plate light through hole 211 is collinear with the central axis of the reference optical path of the optical path system, and the central axis of the bottom plate light through hole 211 represents the standard optical axis center of the detection optical path. When laser light is incident from the bottom plate light passing hole 211, a spot is left on the laser image paper 4. The laser detection device is removed, the laser imaging paper 4 is pierced through the centering through hole 311 by a small needle, the center position of the optical axis is displayed on the side where the mark is left by the spot, and the deviation of the center of the laser beam relative to the reference optical path center line of the optical path system is judged by the deviation of the spot from the center position. Wherein the reference optical path center line is generally the central axis of the optical path system.
Wherein, when in actual use, the base 2 of corresponding size should be selected for use according to the size of the laser generation facula, specifically, the diameter of the bottom plate clear aperture 211 on the base 2 of selected use should be greater than the laser facula diameter, can let the unblock clear aperture 211 of bottom plate of passing through of laser. For example, the spot diameter is 5mm, and the bottom plate light-passing hole 211 has a diameter of 5.5 mm. The surface of the positioning pressing plate 31 for pressing the laser image paper 4 is preferably a solid plane to ensure the pressing effect.
Among them, since the centering through hole 311 is for centering, the diameter is preferably set to a small value, for example, 1mm, as long as the needle-like structure is ensured to pass through to puncture the laser image paper 4.
The laser detection device that this embodiment provided, need not complicated device and high-priced detection material, can compress tightly the design to laser image paper 4 through base 2 and positioning seat 3, install laser detection device in the detection position again, make the shape and the position of laser image paper 4 have the fixity in the testing process, bottom plate clear opening 211 can circle the application range of laser image paper 4, utilize centering through-hole 311 can carry out centering operation to the application range of laser image paper 4, whether incline for judging the light beam and provide the reference object, in addition, because base 2 and positioning seat 3 are the split type structure of dismantling the connection, laser image paper 4 can be followed after the use and taken out and change, moreover, the operation is simple, the cost is lower, it is detected to be applied to the alignment of high-energy laser beam light path with laser image paper 4 more conveniently.
Further, referring to fig. 2, the base plate 21 is fixedly disposed with the base ring 22, 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 coaxial with the bottom plate light through hole 211. Two image paper mounting slots 222 are formed in the base ring 22. The two image paper installation slots 222 are oppositely arranged at two sides of the bottom plate light through hole 211, and preferably, the two image paper installation slots 222 are mirror-symmetrical. The image paper mounting groove 222 penetrates the base ring 22 in the radial direction of the bottom plate light through hole 211, and part of the edge of the image paper mounting groove 222 is positioned on the bottom plate 21.
Before connecting positioning seat 3, install laser video paper 4 on base 2, make it laminate bottom plate 21, wherein, laser video paper 4 part stretches into video paper mounting groove 222, video paper mounting groove 222 can carry out the screens to laser video paper 4, place and fix the laser video paper 4 of tailorring in video paper mounting groove 222, can avoid connecting positioning seat 3 in-process or in the testing process, laser video paper 4 is rotatory pasting bottom plate 21, and can further conveniently confirm bottom plate 21 and laser video paper 4's position relation. In addition, for the laser image paper 4, the shape and size of the laser image paper 4 should be adjusted according to the size and structure of the image paper installation groove 222, so as to prevent the laser image paper 4 from shaking or tilting in the image paper installation groove 222.
Here, it is preferable that the image paper installation groove 222 is a U-shaped groove and the groove bottom is located on the bottom plate 21, that is, the image paper installation groove 222 is opened at one side in the axial direction along the bottom plate light passing hole 211. Based on U type structure for laser image paper 4 is in the installation, except can stretching into two image paper mounting grooves 222 along the radial of bottom plate logical unthreaded hole 211 in proper order, can also install simultaneously in two image paper mounting grooves 222 along the axial of bottom plate logical unthreaded hole 211. In addition, the size of the image receiving paper mounting groove 222 has a small restriction on the shape of the laser image receiving paper 4, and even if the laser image receiving paper 4 has a profile structure in which the center thereof is convex as shown in fig. 5, the laser image receiving paper can be smoothly mounted in the image receiving paper mounting groove 222 in the axial direction.
Further, the end points of the bottoms of the two image paper installation grooves 222 are respectively the four vertexes 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 image paper mounting grooves 222 is an arc AB, two endpoints are respectively a point a and a point B, the bottom of the other image paper mounting groove 222 is an arc CD, two endpoints are respectively a point C and a point D, and four endpoints are four vertices of a virtual rectangle ABDC, which can enclose the bottom plate light-passing hole 211 therein, so that convenience is provided for setting the shape of the laser image paper 4. Before the laser image paper 4 is installed, the laser image paper 4 can be manufactured into a rectangle with two opposite sides equal to the straight line AB.
Further, referring to fig. 2, the positioning seat mounting structure 221 is an internal thread provided on the base ring 22, and preferably, the internal thread may be provided on an end of the base ring 22 far from the bottom plate 21. The fitting 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 threads, so that the assembly and disassembly are convenient. Of course, in other embodiments, the positioning seat mounting structure 221 and the matching structure 321 may be disposed on a matching fastening structure, and the detachable connection is realized by clamping.
Wherein, preferably, the positioning seat 3 comprises a positioning ring 32 fixed on 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 fitting structure 321 is provided on the outer peripheral surface of the positioning ring 32 and/or the positioning pressure plate 31, and the external thread as the fitting structure 321 is adaptively provided only on the positioning ring 32 or only on the positioning pressure plate 31 depending on the position of the internal thread provided on the base ring 22, or may be provided partially on both the positioning ring 32 and the positioning pressure plate 31. The base ring 22 is a circular ring structure concentric with the bottom plate light through hole 211. Because the holding ring 32 is a hollow ring structure, the needle threading operation of the centering through hole 311 is not affected, and meanwhile, the axial length of the positioning seat 3 is increased due to the arrangement of the holding ring 32, so that the stability of the installation of the positioning seat 3 on the base 2 can be improved.
More preferably, after the positioning seat 3 is connected to the base 2 and the positioning pressing plate 31 presses the bottom plate 21, part of the structure of the positioning ring 32 protrudes out of the base ring 22 along the axial direction of the centering through hole, so that during the disassembling process, a force can be applied to the protruding part to unscrew the positioning seat 3, thereby facilitating the disassembling of the positioning seat 3.
Further, a connecting ring 23 is fixedly arranged on one side of the bottom plate 21 where the connecting structure is arranged, the connecting structure is an internal thread arranged on the connecting ring 23, and the connecting ring 23 is a circular ring structure concentric with the bottom plate light through hole 211. After the connection ring 23 is screwed to the detection positioning structure corresponding to the detection position, since the connection ring 23 is concentric with the bottom plate light through hole 211, the position relationship between the central axis of the bottom plate light through hole 211 and the detection positioning structure is convenient to determine, and the two structures form a concentric position relationship. Of course, in other embodiments, the connection structure may be configured to be fixed by a buckle, a magnet, or the like.
Further, referring to fig. 2, a linear direction marking structure 24 is disposed on an end surface of the base ring 22 away from the bottom plate 21, and the direction marking structure 24 may be specifically disposed by carving, spraying, or the like. By the arrangement of the direction marking structure 24, a reference object is further provided, which facilitates distinguishing the deviation direction of the center of the light spot relative to the centering through hole 311, and facilitates determining the adjusting direction for adjusting the emergent laser.
Specifically, the working principle of the detection device in this embodiment is illustrated by interfacing with the opto-mechanical assembly of the sleeve 1 with the SM1 external thread, and the application object is not limited to such opto-mechanical assembly:
when the light path calibration laser detection is carried out, the laser image paper 4 is made into a long strip shape and is clamped into the positions of the two image paper mounting grooves 222, the image display surface of the laser image paper 4 faces the bottom plate light through hole 211, the threads between the base ring 22 and the positioning ring 32 are screwed tightly, the positioning pressing plate 31 is tightly attached to the base 2, and the laser image paper 4 is tightly pressed by the positioning pressing plate 31. The base 2 is screwed on the sleeve 1, and at this time, the centering through hole 311 is collinear with the central axis of the opto-mechanical assembly. When the laser light is incident on the detection device through the sleeve 1, a spot of light is left on the image paper, and the position of the orientation mark structure 24 on the base 2 is remembered. The detection device is removed, and the laser imaging paper 4 is pierced through the centering through hole 311 by a small needle to find the central axis of the optical path system, thereby determining the deviation of the actual laser beam center from the central axis of the optical unit.
Obviously, the image paper installation groove 222 is not limited to be provided as a U-shaped groove, for example, as shown in fig. 7, in another specific embodiment, the image paper installation groove 222 has a rectangular hole-shaped structure.
In addition to the above laser detection device, the present invention also provides a laser detection method for alignment of a high-energy laser beam, which can be applied to the laser detection device provided in any of the above embodiments.
The detection method specifically comprises the following steps:
installing the laser image paper 4 on the base 2, wherein the image display surface of the laser image paper 4 faces the bottom plate light through hole 211;
the positioning seat 3 is connected on the base 2, so that the base plate 21 and the positioning pressing plate 31 clamp the laser image display paper 4;
mounting the base 2 at a detection position, wherein the axis of the bottom plate light through hole 211 is collinear with the central line of the reference light path;
irradiating the large-energy laser beam to be detected on the laser imaging paper 4 through the bottom plate light through hole 211 to generate light spots;
taking down the base 2 from the detection position, and piercing the laser image paper 4 through the centering through hole 311 by using a needle to form a center hole;
and comparing the positions of the light spots and the central hole to determine whether the center of the high-energy laser beam is aligned with the center line of the reference light path.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The laser detection device and the laser detection method for aligning high-energy laser beams provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The laser detection device is characterized by comprising a base (2) and a positioning seat (3); the base (2) comprises a bottom plate (21), a positioning seat mounting structure (221) fixed on the bottom plate (21) and a connecting structure fixed on the bottom plate (21), the positioning seat mounting structure (221) and the connecting structure are respectively arranged on two sides of the bottom plate (21), and the bottom plate (21) is provided with a circular bottom plate light through hole (211) in a penetrating manner; the positioning seat (3) comprises a positioning pressing plate (31) and a matching structure (321) fixed on the positioning pressing plate (31), the matching structure (321) is detachably connected to the positioning seat mounting structure (221) to detachably connect the base (2) and the positioning seat (3), and a circular centering through hole (311) with a hole diameter smaller than that of the bottom plate light through hole (211) penetrates through the positioning pressing plate (31); the positioning seat (3) is connected to the base (2), the bottom plate light through 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 fixedly disposed on a side of the bottom plate (21) where the positioning seat mounting structure (221) is disposed, two image paper mounting grooves (222) are disposed on the base ring (22), the two image paper mounting grooves (222) are oppositely disposed on two sides of the bottom plate light passing hole (211), the image paper mounting grooves (222) penetrate through the base ring (22) along a radial direction of the bottom plate light passing hole (211), and a partial edge of the image paper mounting groove (222) is located on the bottom plate (21).
3. The laser detection device according to claim 2, wherein the image paper mounting groove (222) is a U-shaped groove and the groove bottom is located on the bottom plate (21).
4. The laser detection device according to claim 3, wherein the end points of the bottom of the two image paper installation slots (222) are respectively four vertexes of a virtual rectangle, and the virtual rectangle can cover the bottom plate light through hole (211).
5. The laser inspection 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 mating structure (321) is an external thread that is threadedly mated with the positioning seat mounting structure (221).
6. The laser detection device according to claim 5, wherein the positioning seat (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), the positioning pressing plate (31) is a circular ring plate concentric with the centering through hole (311), the fitting structure (321) is provided on an outer circumferential surface of the positioning ring (32) and/or the positioning pressing plate (31), and the base ring (22) is a circular ring structure concentric with the bottom plate light through hole (211).
7. The laser detection device according to claim 6, wherein after the positioning seat (3) is connected to the base (2) and the positioning pressing plate (31) presses the bottom plate (21), a part of the structure of the positioning ring (32) protrudes from the base ring (22) along the axial direction of the bottom plate light through hole (211).
8. The laser detection device according to any one of claims 1 to 4, wherein a connecting ring (23) is fixedly arranged on one side of the bottom plate (21) where the connecting structure is arranged, the connecting structure is an internal thread arranged on the connecting ring (23), and the connecting ring (23) is a circular ring structure concentric with the bottom plate light through hole (211).
9. The laser detection device according to any one of claims 2 to 4, characterized in that a linear direction marking structure (24) is provided on the end face of the base ring (22) remote from the base plate (21).
10. A laser detection method for alignment of high-energy laser beam, characterized in that the laser detection device of any one of claims 1 to 9 is applied, and the detection method comprises:
installing laser image paper (4) on the base (2), wherein an image display surface of the laser image paper (4) faces the bottom plate light through hole (211);
the positioning seat (3) is connected to the base (2) so that the base plate (21) and the positioning pressing plate (31) clamp the laser image display paper (4);
the base (2) is installed at a detection position, and the axis of the bottom plate light through hole (211) is collinear with the center line of a reference light path;
irradiating the large-energy laser beam to be detected on the laser image paper (4) through the bottom plate light through hole (211) to generate light spots;
taking down the base (2) from the detection position, and puncturing the laser image display paper (4) through the centering through hole (311) by using a needle to form a center hole;
and comparing the positions of the light spot and the central hole to determine whether the center of the high-energy laser beam is aligned with the reference light path central line.
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