Cultural relic surface layer multi-information integrated detection device based on area array sensing

Abstract

The invention relates to a cultural relic surface multi-information integrated detection device based on area array sensing. The cultural relic surface multi-information integrated detection device comprises a laser, a light sheet light path unit, a dichroscope, a beam splitter prism, a TIE light path unit and a hyperspectral camera, the laser emits laser to the light sheet light path unit, the light sheet light path unit is perpendicular to the light path of the TIE light path unit, the beam splitter prism and an object to be measured are arranged on the light path of the TIE light path unit, and the dichroscope is arranged at the intersection of the light path of the light sheet light path unit and the light path of the TIE light path unit. The TIE light path unit is used for reflecting the laser shaped by the light sheet light path unit to an object to be measured and transmitting the reflected light of the object to be measured into the beam splitter prism, and the hyperspectral camera and the TIE light path unit collect the light dispersed by the beam splitter prism and are used for obtaining surface information of the object to be measured. Compared with the prior art, the device has the advantages of simplified structure, convenient operation, small error, high detection accuracy and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of in-situ detection of multimodal information on the surface of painted cultural relics, and in particular to a multi-information integrated detection device for the surface of cultural relics based on area array sensing. Background Art

[0002] In the field of surface inspection of painted artifacts, dye composition identification methods primarily rely on liquid chromatography and mass spectrometry. These chemical analysis methods not only require sampling of the artifacts but also involve cumbersome pre-processing steps. Furthermore, TIE imaging technology suffers from errors introduced by mechanical movement, resulting in low measurement accuracy.

[0003] The restoration and conservation of painted cultural relics and the analysis of organic dyes on their surfaces can be divided into dye composition identification, color analysis, and digital 3D reconstruction of their morphology, depending on their focus. If these different detection technologies are used in separate steps, the artifact samples will face the problem of exacerbated damage due to multiple sampling. Therefore, previous inspections have focused on only one aspect, failing to simultaneously acquire multidimensional information and digitally reconstruct painted cultural relics. Furthermore, existing inspection technologies have limitations in terms of non-destructiveness and in-situ performance.

[0004] For example, the invention with publication number CN118603322A discloses an optical nondestructive detection device for the dye composition, color information and microstructure of the surface of cultural relics, including an imaging light path module and an optical fiber spectrum acquisition module. The imaging light path module includes a coaxially arranged 4F imaging light path, an electrically controlled variable-focus liquid lens and a CCD camera. The electrically controlled variable-focus liquid lens is located at the front end of the 4F imaging light path, and the rear end of the 4F imaging light path is connected to the CCD camera; the optical fiber spectrum acquisition module includes an interconnected optical fiber probe, a light emitter and a spectrometer. The optical fiber probe is movably arranged in the imaging light path module and is located on the side of the electrically controlled variable-focus liquid lens away from the 4F imaging light path. The spectrometer is used to collect reflection spectra and fluorescence spectra.

[0005] However, in the aforementioned invention, the TIE optical path is coaxially arranged with the fiber optic probe. Adjusting the probe's position can introduce errors, resulting in the topography and spectral detection not actually occurring at the same sample location. This leads to information asymmetry and low detection accuracy and precision. Furthermore, the fluorescence signal collected via the optical fiber is particularly weak and easily drowned out by noise, resulting in low collection efficiency. The fiber connection structure is complex, making system integration inconvenient. Furthermore, the use of a liquid lens results in a small field of view and severe distortion. Compensation through the lens results in redundant optical paths, poor compensation, and poor detection accuracy.

[0006] In summary, the existing devices for in-situ detection of multimodal information on the surface of painted cultural relics have unreasonable optical path structure arrangement, resulting in large detection errors, poor accuracy, and low collection efficiency. Therefore, it is necessary to provide an optical non-destructive detection device for the dye composition, color information and microstructure of cultural relics with reasonable optical path structure arrangement, small adjustment error, high accuracy and high collection efficiency. Summary of the Invention

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art, such as unreasonable arrangement of optical path structure, which leads to large detection error and poor precision, and to provide an optical non-destructive detection device for the dye composition, color information and microstructure of the surface of cultural relics.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A multi-information integrated detection device for the surface of cultural relics based on area array sensing, comprising a laser, a light sheet optical path unit, a dichroic mirror, a beam splitter prism, a TIE optical path unit and a hyperspectral camera;

[0010] The laser emits laser light toward the light sheet optical path unit. The optical paths of the light sheet optical path unit and the TIE optical path unit are perpendicular to each other. The beam splitter prism and the object to be measured are arranged on the optical path of the TIE optical path unit. The dichroic mirror is arranged at the intersection of the optical paths of the light sheet optical path unit and the TIE optical path unit, and is used to reflect the laser light shaped by the light sheet optical path unit onto the object to be measured and allow the reflected light of the object to be measured to be transmitted into the beam splitter prism. The hyperspectral camera and the TIE optical path unit collect light scattered by the beam splitter prism to obtain surface information of the object to be measured.

[0011] Preferably, the light sheet optical path unit includes a coaxially arranged slit structure and a cylindrical lens group, the laser emitter is connected to the slit structure through an optical fiber to form a uniform linear laser, and the cylindrical lens group is located between the slit structure and the dichroic mirror to shape the linear laser into a polygonal laser.

[0012] Preferably, the cylindrical lens group includes a fixed plano-concave cylindrical lens, a plano-convex cylindrical lens and an adjustable plano-concave cylindrical lens, and the linear laser formed by the slit structure passes through the fixed plano-concave cylindrical lens, the plano-convex cylindrical lens and the adjustable plano-concave cylindrical lens in sequence.

[0013] Preferably, the convex surface of the fixed plano-concave cylindrical lens, the concave surface of the plano-convex cylindrical lens and the convex surface of the adjustable plano-concave cylindrical lens are all facing the slit structure, so as to shape the linear laser into a square laser.

[0014] Preferably, the adjustment plano-concave cylindrical lens is mounted on an adjustment base, and the adjustment base includes an L-shaped fixed seat, an L-shaped sliding seat, an adjustment bolt, a clamping seat and a height adjustment rod; the L-shaped fixed seat is mounted on the bottom plate of the detection device, and the L-shaped sliding seat is arranged parallel to the L-shaped fixed seat, the adjustment bolt is threadedly connected to the L-shaped fixed seat, and the bottom end is vertically rotatably connected to the L-shaped sliding seat, the height adjustment rod is vertically fixed on the L-shaped sliding seat, the clamping seat can be slidably fixed on the height adjustment rod, and the adjustment plano-concave cylindrical lens can be detachably fixed on the clamping seat.

[0015] Preferably, the wavelength of the laser emitted by the laser is less than or equal to the maximum threshold of the reflected light wavelength of the dichroic mirror, and the wavelength of the fluorescence excited by the object to be measured is greater than the minimum threshold of the projected light wavelength of the dichroic mirror.

[0016] Preferably, the TIE optical path unit includes an electrically controlled variable focus lens and a CCD camera, and the electrically controlled variable focus lens is located between the CCD camera and the beam splitter prism.

[0017] Preferably, the device further comprises a halogen lamp, which is arranged directly above the TIE optical path unit and is used to provide a standard light source for illuminating the object to be measured.

[0018] Preferably, the hyperspectral camera is used to collect the reflection spectrum of the object to be tested when irradiated by a halogen lamp and the fluorescence spectrum excited by the object to be tested when irradiated by a laser.

[0019] Preferably, the angles between the dichroic mirror, the light sheet optical path unit and the TIE optical path unit are all 45 degrees, and the laser shaped by the light sheet optical path unit is reflected away from the beam splitter prism by the dichroic mirror.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) This solution sets the light path of the light sheet optical path unit and the TIE optical path unit perpendicular to each other, and sets a dichroic mirror at the intersection of the light paths, so that the laser shaped by the light sheet optical path unit is reflected onto the object to be tested. The fluorescence excited by the object to be tested is transmitted through the dichroic mirror to the dichroic prism and can be collected by the hyperspectral camera. The light sheet optical path and the TIE optical path are set perpendicularly based on the dichroic mirror, which avoids the error caused by mechanical displacement when adjusting the height of the laser emission module, thereby improving the accuracy and precision of the detection. In addition, the corresponding camera collects the corresponding light and performs the corresponding detection in conjunction with the dichroic prism, thereby collecting the spectral information and morphological information of the object to be tested, and can perform a fusion display of multiple information, so that the detected morphology and color of the object to be tested are more consistent, further improving the accuracy.

[0022] (2) This solution integrates the laser light sheet path, TIE light path, and hyperspectral camera acquisition light path through a dichroic mirror and a beam splitter, simplifying the structure of the optical path system. Compared with existing optical fiber-based spectral acquisition systems, the fluorescence signal collected by optical fibers is particularly weak and easily submerged in noise, and multiple optical fibers are required. The fragility of optical fibers brings inconvenience to system integration. This solution is based on integrated optical path signal acquisition, with higher accuracy and acquisition efficiency. The simplified structure reduces the use of optical fibers and optimizes the integration of the optical path system.

[0023] (3) This solution uses an electrically controlled variable focus lens at the acquisition end of the CCD in the TIE optical path unit. Compared to the existing TIE optical path unit that uses a liquid lens, which results in a smaller field of view and severe distortion; even if the field of view is expanded by the lens, it will lead to optical path redundancy and distortion will still exist. This solution can effectively avoid the errors caused by the complex hardware settings of the TIE optical path unit, simplify the optical path, and improve the accuracy of TIE optical path reconstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of the detection device provided by the present invention;

[0025] Figure 2 A schematic structural diagram of the light sheet optical path unit provided by the present invention;

[0026] Figure 3 A schematic diagram of the structure of the TIE optical path unit provided by the present invention;

[0027] Figure 4 A schematic structural diagram of the adjustable plano-concave cylindrical lens provided by the present invention mounted on an adjustable base;

[0028] Figure 5 Schematic diagram of the structure of the detection device provided by the present invention without the halogen lamp installed

[0029] In the figure: 1. Laser, 2. Dichroic mirror, 3. Beam splitter, 4. Hyperspectral camera, 5. Slit structure, 6. Fixed plano-concave cylindrical lens, 7. Plano-convex cylindrical lens, 8. Adjustable plano-concave cylindrical lens, 9. Electronically controlled variable focus lens, 10. CCD camera, 11. Halogen lamp, 81. L-shaped fixing seat, 82. L-shaped sliding seat, 83. Adjustment bolt, 84. Clamping seat, 85. Height adjustment rod. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0034] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0036] Example 1

[0037] like Figure 1 and Figure 5As shown, this embodiment provides a multi-information integrated detection device for the surface of cultural relics based on area array sensing, including a laser 1, a light sheet optical path unit, a dichroic mirror 2, a beam splitter prism 3, a TIE optical path unit and a hyperspectral camera 4;

[0038] Laser 1 emits laser light toward the light sheet optical path unit. The optical paths of the light sheet optical path unit and the TIE optical path unit are perpendicular to each other. The beam splitter prism 3 and the object to be measured are arranged on the optical path of the TIE optical path unit. The dichroic mirror 2 is arranged at the intersection of the optical paths of the light sheet optical path unit and the TIE optical path unit, and is used to reflect the laser shaped by the light sheet optical path unit onto the object to be measured and allow the reflected light of the object to be measured to be transmitted into the beam splitter prism 3. The hyperspectral camera 4 and the TIE optical path unit collect the light scattered by the beam splitter prism 3 to obtain surface information of the object to be measured.

[0039] Working principle: The optical paths of the light-sheet optical path unit and the TIE optical path unit are set vertically. The dichroic mirror 2 at the intersection of the optical paths reflects the laser light emitted by the laser after being shaped by the light-sheet optical path unit onto the object to be tested. The fluorescence excited by the object to be tested can directly transmit through the dichroic mirror 2 to the beam splitter prism 3, and is reflected to the TIE optical path unit and the hyperspectral camera 4 according to the sampling conditions, completing the multi-angle acquisition of the surface information of the object to be tested, and reconstructing the surface of the object to be tested based on the acquired surface information.

[0040] By setting the light sheet optical path unit and the TIE optical path unit perpendicular to each other and placing a dichroic mirror 2 at the intersection of the optical paths, the laser shaped by the light sheet optical path unit is reflected onto the object to be tested. The fluorescence excited by the object to be tested is transmitted through the dichroic mirror 2 to the beam splitter prism 3 and can be collected by the hyperspectral camera 4. By setting the light sheet optical path and the TIE optical path perpendicularly based on the dichroic mirror 2, the error caused by mechanical displacement when adjusting the height of the laser emission module is avoided, thereby improving the accuracy and precision of the detection. In addition, in conjunction with the beam splitter prism 3, the corresponding camera collects the corresponding light and performs the corresponding detection, thereby collecting spectral information and morphological information of the object to be tested. Multi-information fusion display can be performed, making the detected morphology and color of the object to be tested more consistent, further improving accuracy.

[0041] Preferred embodiment, as Figure 2 As shown, the light sheet optical path unit includes a coaxially arranged slit structure 5 and a cylindrical lens group. The laser emitter 1 is connected to the slit structure 5 through an optical fiber to form a uniform linear laser. The cylindrical lens group is located between the slit structure 5 and the dichroic mirror 2 to shape the linear laser into a polygonal laser.

[0042] In this embodiment, the cylindrical lens group includes a fixed plano-concave cylindrical lens 6, a plano-convex cylindrical lens 7 and an adjustable plano-concave cylindrical lens 8. The linear laser formed by the slit structure 5 passes through the fixed plano-concave cylindrical lens 6, the plano-convex cylindrical lens 7 and the adjustable plano-concave cylindrical lens 8 in sequence.

[0043] Specifically, the convex surface of the fixed plano-concave cylindrical lens 6 , the concave surface of the plano-convex cylindrical lens 7 and the convex surface of the adjustable plano-concave cylindrical lens 8 are all facing the slit structure 5 , so as to shape the linear laser into a square laser.

[0044] In this embodiment, Figure 4 As shown, the adjusting plano-concave cylindrical lens 8 is installed on the adjusting base, which includes an L-shaped fixing seat 81, an L-shaped sliding seat 82, an adjusting bolt 83, a clamping seat 84 and a height adjustment rod 85; the L-shaped fixing seat 81 is installed on the bottom plate of the detection device, the L-shaped sliding seat 82 is arranged parallel to the L-shaped fixing seat 81, the adjusting bolt 83 is threadedly connected to the L-shaped fixing seat 81, and the bottom end is vertically rotatably connected to the L-shaped sliding seat 82, the height adjustment rod 85 is vertically fixed on the L-shaped sliding seat 82, the clamping seat 84 is slidably fixed on the height adjustment rod 85, and the adjusting plano-concave cylindrical lens 8 is detachably fixed on the clamping seat 84.

[0045] Adjusting bolts 83 adjust the distance between L-shaped fixing seat 81 and L-shaped sliding seat 82, thereby adjusting the distance between adjustable plano-concave cylindrical lens 8 and fixed plano-concave cylindrical lens 6, to adjust the laser shaping effect. Furthermore, the height of clamping seat 84 on height adjustment rod 85 can be adjusted to adjust the height of adjustable plano-concave cylindrical lens 8. The overall structure is simple, easy to adjust, and highly precise, ensuring the accuracy of the light sheet's optical path.

[0046] In this embodiment, the wavelength of the laser emitted by the laser 1 is less than or equal to the maximum threshold of the reflected light wavelength of the dichroic mirror 2 , and the wavelength of the fluorescence excited by the object to be measured is greater than the minimum threshold of the projected light wavelength of the dichroic mirror 2 .

[0047] Specifically, the fluorescence spectrum of the object under test is collected using a hyperspectral camera, a laser, and a light sheet optical path unit. The laser emits a wavelength of 405nm. The laser is emitted from the laser and connected to a slit via an optical fiber. The slit is 3mm long and 200 microns wide. The slit processes the laser light, converting it into a uniform linear laser. The linear laser is then shaped into a square laser by three lenses. The plano-convex cylindrical lens 7 is 32mm long, 30mm high, and has a focal length of 100mm. The anti-reflection coating applied to it has an effective wavelength of 400-700nm. The fixed plano-concave cylindrical lens 6 and the adjustable plano-concave cylindrical lens 8 are model N-BK7, 32mm long, 30mm high, and have a focal length of 50.0mm. The anti-reflection coating has an effective wavelength of 400-700nm.

[0048] Dichroic mirror 2 has a diameter of 50.8 mm and a cutoff wavelength of 405 nm. It reflects light with wavelengths below 405 nm and transmits light with wavelengths above 405 nm. During operation, a 405 nm laser is reflected by the 405 nm dichroic mirror onto the object under test. Fluorescence generated by the object is reflected by dichroic mirror 2, then transmitted through beam splitter prism 3 and into hyperspectral camera 4, capturing the fluorescence spectrum of the object under test.

[0049] The laser light sheet path, the TIE path, and the hyperspectral camera acquisition path are integrated through a dichroic mirror and a beamsplitter, simplifying the optical system structure. Compared to existing fiber-based spectral acquisition systems, the fluorescence signal collected by optical fibers is particularly weak and easily drowned out by noise. Multiple optical fibers are required, and the fragility of optical fibers introduces inconvenience to system integration. This solution, based on integrated optical signal acquisition, achieves higher accuracy and efficiency, and its simplified structure reduces the use of optical fibers, optimizing the integration of the optical system.

[0050] Preferred embodiment, as Figure 3 As shown, the TIE optical path unit includes an electrically controlled variable focus lens 9 and a CCD camera 10. The electrically controlled variable focus lens 9 is located between the CCD camera 10 and the beam splitter prism 3. The model of the electrically controlled variable focus lens 9 is ML3Z1226UC-MPW, and the focal length is 12-36 mm.

[0051] Furthermore, the device further includes a halogen lamp 11 , which is disposed directly above the TIE optical path unit and is used to provide a standard light source for illuminating the object to be measured.

[0052] In this embodiment, hyperspectral camera 4 is used to capture the reflection spectrum of the object under test illuminated by halogen lamp 11 and the fluorescence spectrum excited by laser 1. The model of hyperspectral camera 4 is FIGSPEC FS23, with a spectral range of 400-1000 nm, a wavelength resolution of 2.5 nm, and up to 1200 spectral channels.

[0053] When collecting the reflectance spectrum of the object under test, a halogen lamp serves as the standard light source. Light reflected from the object passes through a dichroic mirror 2, then splits by a beam splitter prism 3 and enters a hyperspectral camera 4. Color reconstruction is then performed based on the spectral information to obtain the color information of the object's surface. During TIE reconstruction, the halogen lamp illuminates the object under test, providing a relatively uniform light field. Through the dichroic mirror 2 and beam splitter prism 3, a CCD camera 10 captures a picture of the object in front of it, collecting focused and defocused images for reconstruction.

[0054] Specifically, the included angles between the dichroic mirror 2 , the light sheet optical path unit, and the TIE optical path unit are all 45 degrees, and the laser light shaped by the light sheet optical path unit is reflected away from the beam splitter prism 3 by the dichroic mirror 2 .

[0055] The CCD acquisition end of the TIE optical unit is equipped with an electrically controlled variable focus lens. Compared to existing TIE optical units that use liquid lenses, which result in a smaller field of view and severe distortion, even if the lens is used to expand the field of view, it will lead to optical path redundancy and distortion will still exist. The variable focus lens can capture focused and defocused images for topography reconstruction, effectively avoiding the errors caused by the complex hardware setup of the TIE optical unit, simplifying the optical path and improving the accuracy of TIE optical path reconstruction.

[0056] Specific experimental process: During the experiment, assemble the detection device according to the above layout;

[0057] Turn on the halogen lamp to ensure that the acquisition screen is illuminated. The hyperspectral camera collects the reflection spectrum of the object under test, and the TIE optical path collects the focus and defocus images of the object under test.

[0058] The halogen lamp is turned off, and the laser is turned on to illuminate the object under test. The hyperspectral camera collects the fluorescence spectrum excited by the object under test. The collected reflectance spectrum, morphology information, and fluorescence spectrum are combined to obtain complete surface information of the object under test, which can be used for subsequent reconstruction of the object under test.

[0059] Because the laser cannot fully cover the field of view, the reflection spectrum and morphological information of the large field of view are collected first. Then, when collecting the fluorescence spectrum, the position of the laser on the object to be measured is moved by the bracket to realize the collection of all fluorescence spectra in the large field of view.

[0060] Considering that the fiber optic spectral acquisition system detects spectral information point-to-point, but TIE technology collects topographic information on a surface, the information dimensions between the two are not compatible. This system makes up for this deficiency and can perform multi-information fusion display (including fitting three-dimensional topography and color), overcoming the detection problem of information mismatch caused by the actual mismatch between topography detection and spectral detection, and achieving high information matching accuracy. It also avoids the inconvenience of system integration caused by the complex fiber optic structure, optimizes the optical path system, avoids excessive use of optical fiber, and facilitates system integration. In addition, by simplifying the TIE reconstruction optical path, it reduces the use of additional hardware while improving reconstruction accuracy.

[0061] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A multi-information integrated detection device for the surface of cultural relics based on area array sensing, characterized in that: It includes a laser (1), a light sheet optical path unit, a dichroic mirror (2), a beam splitter prism (3), a TIE optical path unit and a hyperspectral camera (4); The laser (1) emits laser light to a light sheet optical path unit, the optical paths of the light sheet optical path unit and the TIE optical path unit are perpendicular to each other, the beam splitter prism (3) and the object to be measured are arranged on the optical path of the TIE optical path unit, the dichroic mirror (2) is arranged at the intersection of the optical paths of the light sheet optical path unit and the TIE optical path unit, and is used to reflect the laser light shaped by the light sheet optical path unit onto the object to be measured, and to allow the reflected light of the object to be measured to be transmitted into the beam splitter prism (3), and the hyperspectral camera (4) and the TIE optical path unit collect the light dispersed by the beam splitter prism (3) to obtain surface information of the object to be measured.

2. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 1 is characterized in that: The light sheet optical path unit comprises a coaxially arranged slit structure (5) and a cylindrical lens group, the laser emitter (1) is connected to the slit structure (5) via an optical fiber and is used to form a uniform linear laser, and the cylindrical lens group is located between the slit structure (5) and the dichroic mirror (2) and is used to shape the linear laser into a polygonal laser.

3. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 2 is characterized in that: The cylindrical lens group comprises a fixed plano-concave cylindrical lens (6), a plano-convex cylindrical lens (7), and an adjustable plano-concave cylindrical lens (8); the linear laser formed by the slit structure (5) passes through the fixed plano-concave cylindrical lens (6), the plano-convex cylindrical lens (7), and the adjustable plano-concave cylindrical lens (8) in sequence.

4. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 3 is characterized in that: The convex surface of the fixed plano-concave cylindrical lens (6), the concave surface of the plano-convex cylindrical lens (7), and the convex surface of the adjustable plano-concave cylindrical lens (8) are all oriented toward the slit structure (5) and are used to shape the linear laser into a square laser.

5. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 3 is characterized in that: The adjustable plano-concave cylindrical lens (8) is mounted on an adjustable base, and the adjustable base comprises an L-shaped fixed base (81), an L-shaped sliding base (82), an adjusting bolt (83), a clamping base (84) and a height adjustment rod (85); the L-shaped fixed base (81) is mounted on a bottom plate of the detection device, the L-shaped sliding base (82) is arranged parallel to the L-shaped fixed base (81), the adjusting bolt (83) is threadedly connected to the L-shaped fixed base (81), and the bottom end is vertically rotatably connected to the L-shaped sliding base (82), the height adjustment rod (85) is vertically fixed on the L-shaped sliding base (82), the clamping base (84) is slidably fixed on the height adjustment rod (85), and the adjustable plano-concave cylindrical lens (8) is detachably fixed on the clamping base (84).

6. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 1 is characterized in that: The wavelength of the laser emitted by the laser (1) is less than or equal to the maximum threshold of the wavelength of the reflected light of the dichroic mirror (2), and the wavelength of the fluorescence excited by the object to be measured is greater than the minimum threshold of the wavelength of the projected light of the dichroic mirror (2).

7. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 1 is characterized in that: The TIE optical path unit comprises an electrically controlled variable focus lens (9) and a CCD camera (10), wherein the electrically controlled variable focus lens (9) is located between the CCD camera (10) and the beam splitter prism (3).

8. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 1 is characterized in that: The device further comprises a halogen lamp (11), which is arranged directly above the TIE optical path unit and is used to provide a standard light source for illuminating the object to be measured.

9. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 8, characterized in that: The hyperspectral camera (4) is used to collect the reflection spectrum reflected by the object to be tested when the halogen lamp (11) is irradiated, and the fluorescence spectrum excited by the object to be tested when the laser (1) is irradiated.

10. The multi-information integrated detection device for the surface of cultural relics based on area array sensing according to claim 1, characterized in that: The included angles of the dichroic mirror (2), the light sheet optical path unit, and the light path of the TIE optical path unit are all 45 degrees, and the laser light shaped by the light sheet optical path unit is reflected away from the beam splitting prism (3) by the dichroic mirror (2).

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