Imaging system

Abstract

The invention relates to an imaging system which comprises a scanning device, a detection scanning module for detecting and scanning an image plate to obtain complete scanning information of the surface of the image plate, and an imaging module for imaging based on the complete scanning information of the surface of the image plate to obtain a target image. The scanning device comprises a transmitting module and a reflecting module; the transmitting module is used for transmitting laser rays; the reflection module is used for performing reflection operation on the laser light in different reflection directions in sequence, so that the laser light is irradiated to different positions of the image plate through different reflection light paths in sequence for excitation; the detection scanning module comprises a plurality of detection units which are respectively arranged in a manner of directly facing different positions of the image plate; each detection unit detects and scans the image plate continuously, but scanning information on the image plate at the moment is regarded as effective only when the real-time excitation position of the laser light in the excitation process of the image plate is right opposite to the real-time excitation position. And the signal-to-noise ratio of final imaging is improved.

Description

Technical Field

[0001] Multiple embodiments of this specification relate to the technical field of laser scanning imaging, and more particularly to an imaging system. Background Art

[0002] Indirect digital X-ray imaging technology is a process of converting X-ray imaging into digital images. It is different from traditional direct digital X-ray imaging. Instead, it captures X-ray images through an intermediate medium and then converts them into digital format. A typical representative of this technology is the Computed Radiography (CR) system, which reflects laser light in different reflection directions through a reflection structure, so that the laser light irradiates different positions on the imaging plate along different reflection optical paths for excitation. Therefore, it is possible to achieve excitation of different positions on the imaging plate without adjusting the emission direction of the laser light, thereby improving the excitation efficiency of the imaging plate.

[0003] Therefore, during the implementation of indirect digital X-ray imaging technology, higher requirements are put forward for the excitation process and the imaging process. Summary of the Invention

[0004] Embodiments of this specification provide an imaging system, which can improve the final imaging quality.

[0005] The technical solution is as follows: Embodiments of this specification provide an imaging system, including a scanning device, a detection and scanning module for detecting and scanning an imaging plate to obtain complete scanning information on the surface of the imaging plate, and an imaging module for imaging based on the complete scanning information on the surface of the imaging plate to obtain a target image; The scanning device includes a transmitting module and a reflecting module; The transmitting module emits laser light; The reflecting module sequentially performs reflection operations on the laser light in different reflection directions, so that the laser light irradiates different positions on the imaging plate along different reflection optical paths for excitation; The detection and scanning module includes a plurality of detection units respectively arranged opposite to different positions on the imaging plate; Each detection unit continuously detects and scans the imaging plate, but only regards the scanning information of the imaging plate at this time as valid when the real-time excitation position during the excitation of the imaging plate by the laser light is opposite to it.

[0006] As a preferred solution, the reflecting module includes a galvanometer unit and a reflecting unit; The galvanometer unit includes a first plane mirror and a first driving subunit for driving the first plane mirror to rotate to sequentially perform reflection operations on the laser light in different reflection directions; The reflection unit includes a second planar mirror that further reflects the laser light that has undergone the reflection operation by the first planar mirror, so that the laser light irradiates different positions of the imaging plate along different reflection optical paths in sequence for excitation. The reflection unit further includes an adjustment mechanism that can rotate the second planar mirror to adjust the angle between the second planar mirror and the rotation axis of the first planar mirror. The rotation axis of the first planar mirror is parallel to the first planar mirror, and the rotation axis of the first planar mirror is perpendicular to the laser light emission direction. The second planar mirror is parallel to the laser light emission direction.

[0007] As a preferred solution, the imaging system further includes a carrying module for carrying the imaging plate, and a driving module that drives the carrying module to move so that the linear excitation range of the scanning device on the imaging plate moves as a whole on the imaging plate, thereby realizing the complete excitation of the surface of the imaging plate by the scanning device. The detection and scanning module is disposed opposite to the linear excitation range of the scanning device on the imaging plate, and the detection and scanning module is disposed at an intermediate position between the height of the reflection module and the height of the imaging plate in the height direction.

[0008] As a preferred solution, the detection and scanning module includes a plurality of detection units that are disposed opposite to the linear excitation range of the scanning device on the imaging plate as a whole and are linearly arranged.

[0009] As a preferred solution, the imaging system further includes a linear position acquisition module, a marking module, and a mask module. The linear position acquisition module pre-acquires the linear position information corresponding to each of the plurality of detection units. The marking module performs a linear position information marking operation on the scanning information obtained by each of the plurality of detection units through detection and scanning based on the linear position information corresponding to each of the plurality of detection units. The mask module performs a MASK masking operation on the scanning information obtained by the detection unit through detection and scanning based on the real-time excitation position of the laser light on the imaging plate when the detection unit detects and scans the scanning information. The complete scanning information on the surface of the imaging plate is obtained based on all the scanning information after the linear position information marking operation and the MASK masking operation.

[0010] As a preferred solution, the imaging system further includes a scanning information output module. The scanning information output module outputs the scanning information after the linear position information marking operation and the MASK masking operation row by row to obtain a scanning information file as the complete scanning information on the surface of the imaging plate. In the scanning information output module, all the scanning information corresponding to the same position on the imaging plate for the entire linear excitation range is output in the same row, and all the scanning information corresponding to different positions on the imaging plate for the entire linear excitation range is output in different rows.

[0011] As a preferred solution, the scanning device further includes a first acquisition module, a second acquisition module, and a control module; The first acquisition module pre-acquires the optical path information corresponding to different reflection optical paths respectively; The second acquisition module pre-acquires the optical power control information corresponding to different reflection optical paths respectively based on the pre-acquired optical path information corresponding to different reflection optical paths; The control module controls the power of the laser beam emitted by the emission module based on the pre-acquired optical power control information corresponding to different reflection optical paths respectively, so that the light intensities are the same when the laser beam irradiates different positions on the imaging plate through different reflection optical paths in sequence for excitation.

[0012] As a preferred solution, the emission module also emits a calibration beam; The second acquisition module also pre-acquires the preset emission power information of the calibration beam; The second acquisition module also pre-acquires the theoretical starting induction current of the calibration beam based on the pre-acquired preset emission power information of the calibration beam; The control module also controls the emission module to emit the calibration beam based on the pre-acquired preset emission power information; The scanning device includes a first photoelectric conversion unit disposed beside the starting end of the optical path of the calibration beam to sense the calibration beam and generate an actual starting induction current; The second acquisition module also acquires first control calibration information based on the pre-acquired theoretical starting induction current and the actual starting induction current generated by the first photoelectric conversion unit; The control module controls the power of the laser beam emitted by the emission module based on the pre-acquired optical power control information corresponding to different reflection optical paths respectively and the first control calibration information, so that the light intensities are the same when the laser beam irradiates different positions on the imaging plate through different reflection optical paths in sequence for excitation; And / or the emission module includes a circular aperture structure disposed on the optical path of the laser beam leading to the reflection module.

[0013] As a preferred solution, the reflection module also reflects the calibration beam so that the calibration beam irradiates the imaging plate along the calibration optical path; The first acquisition module also pre-acquires the optical path information of the calibration optical path; The second acquisition module also pre-acquires a theoretical end induced current when the calibration light reaches the end of the calibration light path based on the pre-acquired preset emission power information of the calibration light and the pre-acquired light path information of the calibration light path; The scanning device also includes a second photoelectric conversion unit disposed beside the end of the calibration light path to sense the calibration light and generate an actual end induced current; The second acquisition module further acquires second control calibration information based on the pre-acquired theoretical terminal induced current and the actual terminal induced current generated by the second photoelectric conversion unit; The control module controls the power of the laser light emitted by the transmitting module based on the pre-acquired optical power control information corresponding to the different reflected light paths, the first control calibration information, and the second control calibration information, so that the light intensity of the laser light is the same when it is irradiated to different positions of the image plate through different reflected light paths for excitation.

[0014] As a preferred solution, the optical path information includes at least one of optical path length information of the reflected optical path, reflection angle information of the reflected optical path at the first plane reflector, and reflection angle information of the reflected optical path at the second plane reflector.

[0015] The beneficial effects brought by the technical solutions provided by some embodiments of this specification include at least: The light emitted by the luminescent material on the image plate after being stimulated may scatter in multiple directions, rather than just directly toward the detection area facing it. In order to ensure the integrity of the scanning information, the current detection scanning of the image plate uses an integrated detector to uniformly detect and scan the image plate, which regards all scanning information obtained at any scanning moment as valid, that is, the scanning information obtained from the detection area that does not correspond to the real-time excitation position is also regarded as valid, and the scanning information obtained by the real-time detection scanning is corresponded to the corresponding position of the image plate based on the real-time excitation position of the laser light, because in this way, the light emitted by the luminescent material on the image plate after being stimulated can be completely scanned. However, for the detection area that is not facing the real-time excitation position, the signal-to-noise ratio of the scanning information obtained by the detection scanning is relatively low, and the farther away from the real-time excitation position, the lower the signal-to-noise ratio of the scanning information. Finally, the final scanning information obtained by fusing all the scanning information corresponding to the real-time excitation position also has a low signal-to-noise ratio. Therefore, the present invention creatively proposes the solution of "detecting and scanning the image plate through multiple detection units, and each detection unit regards the scanning information of the image plate as valid only when the real-time excitation position is directly opposite to it". Although some valid scanning information is lost, the signal-to-noise ratio of the final scanning information is improved.

[0016] Particularly for the fast excitation scenario (i.e., the scenario where the reflection module needs to quickly reflect the laser light in different reflection directions in sequence, so that the laser light can quickly irradiate different positions of the image plate along different reflection optical paths in sequence for excitation to improve the excitation efficiency), an increase in the laser excitation speed means a reduction in the residence time of the laser at each position on the image plate. Therefore, the number of received photons decreases, which in turn leads to a decrease in the intensity of the optical signal generated by the image plate, while the noise level remains relatively unchanged, resulting in a decrease in the signal-to-noise ratio. In addition, the response of the detection and scanning module to the laser signal may not be instantaneous and requires a certain amount of time to reach the maximum response. If the laser excitation speed increases, it means that the detection and scanning module may not be able to fully respond to the optical signal emitted from a certain position on the image plate, resulting in signal weakening, while the noise level remains relatively unchanged, thus leading to a decrease in the signal-to-noise ratio. Therefore, for the above-mentioned fast excitation scenario, the present invention creatively proposes a solution of "detecting and scanning the image plate by multiple detection units in partitions, and each detection unit only regards the scanning information of the image plate at this time as valid when it is directly opposite to the real-time excitation position". Although some valid scanning information is lost, the signal-to-noise ratio of the finally obtained scanning information is improved.

[0017] Based on the position of the detection units, it is possible to better locate the positions of the scanning information obtained by each of the multiple detection units through detection and scanning on the image plate, so as to facilitate subsequent imaging based on the complete scanning information on the surface of the image plate.

[0018] At the subsequent data processing level of the imaging module, it is possible to distinguish the linear positions of the scanning information obtained by each of the multiple detection units through detection and scanning and distinguish the data validity, thereby improving the imaging effect.

[0019] At the subsequent data processing level of the imaging module, it is possible to distinguish the scanning information corresponding to different positions of the overall linear excitation range on the image plate, thereby improving the imaging effect.

[0020] The detection and scanning module is arranged opposite to the linear excitation range of the scanning device for the image plate, and the detection and scanning module is arranged at the middle position between the setting height of the reflection module and the setting height of the image plate in the height direction to achieve better detection and scanning operations on the image plate. On this basis, by adjusting the setting angle of the second plane mirror, the incident angle of the laser light at the image plate is adjusted, thereby avoiding the reflection and scattered light of the laser light on the image plate from entering the detection and scanning module and affecting the scanning result of the detection and scanning module.

[0021] The reflection module sequentially performs reflection operations on the laser beam in different reflection directions, so that the laser beam irradiates different positions of the imaging plate along different reflection optical paths in sequence for excitation. Before performing the reflection operation, the optical path information corresponding to each different reflection optical path is obtained in advance, and based on the optical path information corresponding to each different reflection optical path obtained in advance, the optical power control information corresponding to each different reflection optical path is obtained in advance. Finally, based on the optical power control information corresponding to each different reflection optical path obtained in advance, the power of the laser beam emitted by the emission module is controlled, so that the light intensities are the same when the laser beam irradiates different positions of the imaging plate along different reflection optical paths in sequence for excitation, which can improve the excitation efficiency of the imaging plate and ensure the consistency of the excitation conditions at different positions of the imaging plate, thereby improving the final imaging quality.

[0022] In a laser imaging system, it is optimal for the laser spot presented on the imaging plate to be circular, because a circular spot has a uniform light intensity distribution, which can provide more uniform excitation and thus obtain a higher-quality image. However, in practical applications, due to the influence of various factors, the spot may be elliptical or other irregular shapes. Therefore, in the embodiments of this specification, a circular aperture structure is provided on the optical path of the laser beam leading to the reflection module to cut off the irregular part of the light beam, thereby obtaining a spot closer to a circle, and further achieving a more uniform excitation effect and improving the final imaging quality.

[0023] There may be power emission errors in the emission module itself. Therefore, a first photoelectric conversion unit is added, and based on the theoretically obtained starting induction current and the actual starting induction current generated by the first photoelectric conversion unit, the first control calibration information is obtained to compensate for the emission power error of the laser emitted by the emission module. A second plane mirror is added to cooperate with the first plane mirror to perform reflection operations on the laser beam. Therefore, by adjusting the setting angle of the second plane mirror, the incident angle of the laser beam at the imaging plate can be adjusted to perform higher-quality excitation and improve the final imaging quality.

[0024] Currently, in order to ensure the final imaging effect, it is necessary to slow down the excitation speed of the imaging plate and the detection and scanning speed of the detection unit for the imaging plate to ensure sufficient excitation of the imaging plate by the laser beam and sufficient detection and scanning of the imaging plate by the detection unit, thereby ensuring a high signal-to-noise ratio. However, in the embodiments of this specification, the power of the laser beam emitted by the emission module is controlled, a circular aperture structure is added, the incident angle of the laser beam at the imaging plate is adjusted by the second plane mirror, and multiple detection unit partitions are set to detect and scan the imaging plate. Therefore, the signal-to-noise ratio can be greatly improved at the same excitation speed and the same detection and scanning speed, which provides a basis for increasing the excitation speed and the detection and scanning speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of an imaging system provided by an embodiment of this specification.

[0027] Figure 2 It is a schematic structural diagram of a scanning device provided by an embodiment of this specification.

[0028] Figure 3 It is a schematic diagram of the positional relationship between a plurality of detection units arranged linearly and the imaging plate.

[0029] In the figure: 1. Transmitting module; 21. First plane mirror; 22. First driving sub-unit; 31. Second plane mirror; 32. Rotating shaft mounting hole; 33. Mounting cylinder; 4. Imaging plate; 5. Carrying module; 61. Detection and scanning module; 611. Detection unit; 62. Mounting table; 7. Driving module; 8. Reflection optical path. Detailed implementation manners

[0030] The following will clearly and completely describe the technical solutions in the embodiments of this specification with reference to the drawings in the embodiments of this specification.

[0031] The terms "first", "second", "third", etc. in the specification, claims and drawings of this specification are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0032] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Changes can be made to the functions and arrangements of the described elements without departing from the scope of the content of this specification. Each example can appropriately omit, substitute or add various processes or components. For example, the described method can be executed in a different order from the described order, and various steps can be added, omitted or combined. In addition, the features described in some examples can be combined into other examples.

[0033] Refer to Figure 1 、Figure 2 , Figure 3 As shown in Figure 3 , the imaging system may at least include a scanning device, a detection and scanning module for detecting and scanning the imaging plate 44 to obtain complete scanning information on the surface of the imaging plate 4, and an imaging module for imaging based on the complete scanning information on the surface of the imaging plate 4 to obtain a target image; The scanning device includes a transmitting module 1 and a reflecting module; The transmitting module 1 emits laser light rays; The reflecting module performs reflection operations on the laser light rays in different reflection directions in sequence, so that the laser light rays are irradiated to different positions of the imaging plate 4 in different reflection optical paths 8 in sequence for excitation; The detection and scanning module includes a plurality of detection units 611 respectively arranged opposite to different positions of the imaging plate 4; Each detection unit 611 continuously detects and scans the imaging plate, but only regards the scanning information of the imaging plate 4 at this time as valid when the real-time excitation position during the excitation of the imaging plate 4 by the laser light rays is opposite to it.

[0034] The light emitted by the luminescent substance on the imaging plate 4 after being excited may scatter in multiple directions, rather than just directly towards the opposite detection area. In order to ensure the integrity of the scanning information, currently, when detecting and scanning the imaging plate 4, a whole detector is used to uniformly detect and scan the imaging plate 4, and all the scanning information obtained at any scanning moment is regarded as valid, that is, the scanning information obtained from the detection area not corresponding to the real-time excitation position is also regarded as valid, and the scanning information obtained from the real-time detection and scanning is corresponding to the corresponding position of the imaging plate 4 based on the real-time excitation position of the laser light rays, because in this way, the light emitted by the luminescent substance on the imaging plate 4 after being excited can be completely scanned. However, for the detection area not opposite to the real-time excitation position, the signal-to-noise ratio of the scanning information obtained from its detection and scanning is relatively low, and the signal-to-noise ratio of the scanning information is lower the farther away from the real-time excitation position, and finally the signal-to-noise ratio of the final scanning information obtained by fusing all the scanning information corresponding to this real-time excitation position is also relatively low. Therefore, the present invention creatively proposes a solution of "detecting and scanning the imaging plate 4 in zones by a plurality of detection units 611, and each detection unit 4 only regards the scanning information of the imaging plate 4 at this time as valid when the real-time excitation position is opposite to it". Although some valid scanning information is lost, the signal-to-noise ratio of the finally obtained scanning information is improved.

[0035] Particularly for the fast excitation scenario (i.e., the reflection module needs to quickly reflect the laser light in different reflection directions in sequence, so that the laser light can quickly irradiate different positions of the image plate 4 along different reflection optical paths 8 in sequence for excitation, in order to improve the excitation efficiency), an increase in the laser excitation speed means that the residence time of the laser at each position on the image plate 4 is reduced, so the number of received photons is reduced, which in turn leads to a decrease in the intensity of the optical signal generated by the image plate, while the noise level remains relatively unchanged, resulting in a decrease in the signal-to-noise ratio; in addition, the response of the detection and scanning module to the laser signal may not be instantaneous and requires a certain time to reach the maximum response. If the laser excitation speed increases, it means that the detection and scanning module may not be able to fully respond to the optical signal emitted from a certain position on the image plate 4, resulting in signal weakening, while the noise level remains relatively unchanged, thus leading to a decrease in the signal-to-noise ratio. Therefore, for the above-mentioned fast excitation scenario, the present invention creatively proposes a solution of "detecting and scanning the image plate 4 by dividing it into multiple detection units 611, and each detection unit 611 only regards the scanning information of the image plate 4 at this time as valid when it is directly opposite to the real-time excitation position". Although some valid scanning information is lost, the signal-to-noise ratio of the finally obtained scanning information is improved. Refer to Figure 2 as shown Figure 2 is a schematic structural diagram of a scanning device provided by an embodiment of this specification. The reflection module in the scanning device includes a galvanometer unit and a reflection unit; The galvanometer unit includes a first plane mirror 21 and a first driving subunit 22 that drives the first plane mirror 21 to rotate to sequentially perform reflection operations on the laser light in different reflection directions; The reflection unit includes a second plane mirror 31 that further reflects the laser light that has undergone the reflection operation by the first plane mirror 21, so that the laser light irradiates different positions of the image plate 4 along different reflection optical paths 8 in sequence for excitation; The reflection unit further includes an adjustment mechanism that can rotate the second plane mirror 31 to adjust the angle between the second plane mirror 31 and the rotation axis of the first plane mirror 21; The rotation axis of the first plane mirror 21 is parallel to the first plane mirror 21, and the rotation axis of the first plane mirror 21 is perpendicular to the laser light emission direction. The second plane mirror 31 is parallel to the laser light emission direction.

[0036] It can be understood that by rotating the first plane mirror 21, reflection operations on the laser light in different reflection directions can be sequentially achieved. And a second plane mirror 31 that cooperates with the first plane mirror 21 to perform reflection operations on the laser light is added. By adjusting the setting angle of the second plane mirror 31, the incident angle of the laser light at the image plate 4 can be adjusted to perform higher-quality excitation. The reasons are as follows: 1. The photosensitive characteristics of the imaging plate may vary depending on the manufacturer and model. Adjusting the incident angle can optimize the photosensitive effect of the imaging plate, thereby improving the image quality.

[0037] 2. Different imaging applications may have different requirements for the resolution of the image. By adjusting the incident angle, the resolution and contrast of the image can be affected.

[0038] 3. In different imaging environments, the scattering effect may be different. Adjusting the incident angle can help reduce the impact of scattered light on the image quality.

[0039] It should be noted that the controllability of the angle can also be achieved through the first plane mirror 21, that is, by adjusting the tilt angle of the rotation axis of the first plane mirror 21. However, the rotation of the first plane mirror 21 needs to drive the motor that drives its rotation together, so it is easy to affect the motor. And affecting the motor will cause a control error in the rotation angle of the first plane mirror 21 by the motor, which will further affect the excitation of the imaging plate 4 by the laser beam. While adjusting the second plane mirror 31 does not need to drive the motor to rotate together, so the above problems will not occur.

[0040] The laser beam forms a linear traversal excitation effect on the imaging plate 4 (that is, as the first plane mirror 21 rotates, the laser beam sequentially traverses to each point on the corresponding line on the imaging plate 4 and performs excitation. For example Figure 2 as shown in, the laser beam sequentially reaches point e, point f, and point g on the imaging plate 4, or the laser beam sequentially reaches point g, point f, and point e on the imaging plate 4, and the connection line of points e, f, and g is a straight line; it should be noted that in the actual application process, the rotation speed of the first plane mirror 21 is relatively fast, so there are many excitation points between point e and point f, and there are also many excitation points between point f and point g. And in the actual application process, a excitation light beam passing through points e, f, and g will be visually seen on the imaging plate 4).

[0041] Refer to Figure 1 As shown, the adjusting mechanism for adjusting the angle between the second plane mirror 31 and the rotation axis of the first plane mirror 21 may include a mounting cylinder 33, a rotating shaft, and a driving motor for driving the rotating shaft to rotate (note: Figure 1 the rotating shaft and the driving motor are not shown in). In actual application, the rotating shaft is inserted into the rotating shaft mounting hole 32 of the mounting cylinder 33 and fixedly connected to the inside of the mounting cylinder 33, and the second plane mirror 31 can be arranged outside the mounting cylinder 33 (for example Figure 1At the bottom of the mounting cylinder 33 shown in [reference], the rotating shaft should be parallel to the second planar mirror 31. The rotating shaft is driven by a driving motor to adjust the angle between the rotation axes of the second planar mirror 31 and the first planar mirror 21.

[0042] It should be noted that Figure 2 Only the main part structure of the scanning device is shown in [reference]. In actual application, the scanning device should also have a frame, a housing, etc., which Figure 2 play a supporting and / or protective role for the structure shown in [reference].

[0043] Referring to Figure 1 shown, the imaging system further includes a carrying module 5 for carrying the imaging plate, and a driving module 7 for driving the carrying module 5 to move so that the linear excitation range of the scanning device on the imaging plate 4 as a whole moves on the imaging plate 4, thereby realizing the complete excitation of the surface of the imaging plate 4 by the scanning device; The detection and scanning module is disposed opposite to the linear excitation range of the scanning device on the imaging plate 4, and the detection and scanning module is disposed at an intermediate position between the height of the reflection module and the height of the imaging plate 4 in the height direction.

[0044] It can be understood that the detection and scanning module 61 is disposed opposite to the linear excitation range of the scanning device on the imaging plate 4 (referring to Figure 2 shown, assuming that the linear excitation range of the scanning device on the imaging plate 4 is from point e to point g, then the detection and scanning module 61 is disposed opposite to the range from point e to point g), and the detection and scanning module 61 is disposed at an intermediate position between the height of the reflection module and the height of the imaging plate 4 in the height direction to achieve better detection and scanning operations on the imaging plate 4.

[0045] And it should be noted that in actual application, the direction in which the driving module 7 drives the carrying module 5 to move is preferably perpendicular to the laser light emission route, and the length from point e to point g should be able to cover the width of the imaging plate 4 to achieve faster complete excitation of the imaging plate 4.

[0046] It should also be noted that there is a difference between the wavelength of the laser light and the wavelength of the optical signal excited by the imaging plate 4 after exciting the imaging plate 4. After the laser light is incident on the imaging plate 4, there may still be partial reflection and scattering and further enter the detection and scanning module 61. And in the actual application process, even if a filter is provided in front of the detection and scanning module 61, it is impossible to filter out all the laser light reflected and scattered by the imaging plate 4, resulting in them acting as noise interference to generate a static background noise in the final target image. Therefore, in order to avoid the above problems, by adjusting the setting angle of the second plane mirror 31, the incident angle of the laser light at the imaging plate 4 can be adjusted, thereby avoiding the reflected light and scattered light of the laser light on the imaging plate 4 from entering the detection and scanning module 61 and affecting the scanning result of the detection and scanning module 61.

[0047] Refer to Figure 3 As shown, the detection and scanning module 61 includes a plurality of detection units 611 that are integrally arranged opposite to the linear excitation range of the scanning device for the imaging plate 4 and are linearly arranged, and a mounting table 62 for mounting the plurality of detection units 611; Each detection unit 611 continuously detects and scans the imaging plate 4, but only regards the scanning information of the imaging plate 4 at this time as valid when its real-time excitation position during the excitation process of the imaging plate 4 by the laser light is directly opposite to it; Or, each detection unit 611 only starts to detect and scan the imaging plate 4 when its real-time excitation position during the excitation process of the imaging plate 4 by the laser light is directly opposite to it and regards the scanning information of the imaging plate 4 at this time as valid.

[0048] Take Figure 3 As shown in the figure as an example for illustration, the linear excitation range of the scanning device for the imaging plate 4 in the figure is from point a to point h, that is, the laser light can reach points a, b, c, d, and h in sequence after being reflected by the first plane mirror 21 and the second plane mirror 31 to excite the imaging plate 4 (note: there are many other excitation points between adjacent two points). The four detection units 611 are respectively arranged opposite to the area range from point a to point b, opposite to the area range from point b to point c, opposite to the area range from point c to point d, and opposite to the area range from point d to point h.

[0049] When each detection unit 611 continuously detects and scans the imaging plate 4, but only regards the scanning information of the imaging plate 4 at this time as valid when its real-time excitation position during the excitation process of the imaging plate 4 by the laser light is directly opposite to it: The four detection units 611 are in a normally open state, that is, no matter where the laser beam reaches the image plate 4, the image plate 4 is detected and scanned simultaneously. However, each detection unit 611 only regards the scanning information of the image plate 4 at this time as valid when the real-time excitation position during the excitation of the image plate 4 by the laser beam is directly opposite to it.

[0050] When each detection unit 611 only turns on the detection and scanning of the image plate 4 when the real-time excitation position during the excitation of the image plate 4 by the laser beam is directly opposite to it and regards the scanning information of the image plate 4 at this time as valid: The four detection units 611 are not in a normally open state, but only turn on the detection and scanning of the image plate 4 by the detection unit 611 when the real-time excitation position during the excitation of the image plate 4 by the laser beam is directly opposite to the detection unit 611.

[0051] It can be understood that: The light emitted by the luminescent substance on the image plate 4 after being excited may scatter in multiple directions, rather than only directly towards the directly opposite detection area. To ensure the integrity of the scanning information, currently, when detecting and scanning the image plate 4, a whole detector is used to uniformly detect and scan the image plate 4, and all the scanning information obtained at any scanning moment is regarded as valid, that is, the scanning information obtained from the detection area not corresponding to the real-time excitation position is also regarded as valid, and the scanning information obtained from the real-time detection and scanning is corresponding to the corresponding position of the image plate 4 based on the real-time excitation position of the laser beam, because in this way, the light emitted by the luminescent substance on the image plate 4 after being excited can be completely scanned. However, for the detection area not directly opposite to the real-time excitation position, the signal-to-noise ratio of the scanning information obtained from its detection and scanning is relatively low, and the signal-to-noise ratio of the scanning information is lower the farther away from the real-time excitation position, and finally the signal-to-noise ratio of the final scanning information obtained by fusing all the scanning information corresponding to this real-time excitation position is also relatively low. Therefore, the present invention creatively proposes a solution of "detecting and scanning the image plate 4 by multiple detection units 611 in zones, and each detection unit 611 only regards the scanning information of the image plate 4 at this time as valid when the real-time excitation position is directly opposite to it". Although some valid scanning information is lost, the signal-to-noise ratio of the finally obtained scanning information is improved.

[0052] The following is illustrated by an example: Suppose currently the laser beam reaches a position between point a and point b on the image plate 4. At this time, the scanning information detected by the detection unit 611 set directly opposite to the area range from point a to point b is regarded as valid, while the other three detection units 611 set directly opposite to the other three area ranges do not turn on the detection and scanning, or even if they are turned on, the scanning information obtained from their detection and scanning is not regarded as valid.

[0053] For the above two methods, it is preferable to have four detection units 611 in the normally open state. Since the laser transmission speed is very fast, the detection switch control of the detection unit 611 requires high precision, and frequent switching will also reduce the service life of the detection unit 611. And in this mode, the specific scanning information processing method is as follows: As Figure 3 shown, four detection units 611 are used to scan the imaging plate 4 simultaneously, and the scanning area is divided into four parts. Each detection unit 611 is matched with four areas one by one. When scanning, only the scanning signals in the corresponding area are scanned. That is to say, when the laser beam irradiates the first area, the four detection units 611 work together, but only the scanning information of the detection unit 611 corresponding to the first area is regarded as the valid signal, and the signals received by the other detection units 611 are all invalid signals. The same applies to other areas. When finally processing the data, the first two bits of the presented scanning information represent the linear position information, and the four detection units 611 are distinguished by 00, 01, 10, and 11 respectively. 00 represents the scanning information of the first detection unit 611, 01 represents the scanning information of the second detection unit 611, 10 represents the scanning information of the third detection unit 611, and 11 represents the scanning information of the fourth detection unit 611. Only the first detection unit 611 is valid for the scanning information obtained in the first area; only the second detection unit 611 is valid for the scanning information obtained in the second area; the same applies to the third and fourth areas.

[0054] For the imaging system, it may further include a linear position acquisition module, a marking module, and a mask module; The linear position acquisition module pre-acquires the linear position information corresponding to each of the multiple detection units 611; The marking module performs a linear position information marking operation on the scanning information obtained by each of the multiple detection units 611 based on the linear position information corresponding to each of the multiple detection units 611; The mask module performs a MASK masking operation on the scanning information obtained by the detection unit 611 based on the real-time excitation position of the laser beam on the imaging plate 4 when the detection unit 611 detects and scans; The complete scanning information on the surface of the imaging plate 4 is obtained based on all the scanning information after the linear position information marking operation and the MASK masking operation.

[0055] Furthermore, at the subsequent data processing level of the imaging module, the linear position distinction and data validity distinction of the scanning information obtained by each of the multiple detection units 611 are realized, thereby improving the imaging effect.

[0056] Based on the position of the detection units 611, it is possible to better locate the positions of the scanning information obtained by each of the multiple detection units 611 during detection and scanning on the imaging plate 4, so as to facilitate subsequent imaging based on the complete scanning information on the surface of the imaging plate 4.

[0057] For the processing of valid and invalid scanning information, it can be achieved through the MASK masking technology, that is, masking operations are performed on the invalid scanning information to replace the positions of these scanning information with 0.

[0058] In some embodiments of this specification, the imaging system further includes a scanning information output module; The scanning information output module outputs the scanning information after the linear position information marking operation and the MASK masking operation row by row to obtain a scanning information file, which serves as the complete scanning information on the surface of the imaging plate 4; In the scanning information output module, all the scanning information corresponding to the entire linear excitation range at the same position on the imaging plate 4 is output in the same row, and all the scanning information corresponding to different positions of the entire linear excitation range on the imaging plate 4 is output in different rows.

[0059] It can be understood that in some embodiments of this specification, the scanning information is also output and distinguished row by row according to the different positions of the entire linear excitation range on the imaging plate 4. Furthermore, at the subsequent data processing level of the imaging module, the scanning information corresponding to different positions of the entire linear excitation range on the imaging plate 4 is distinguished, thereby improving the imaging effect.

[0060] It should be noted that the specific position on the imaging plate 4 where each row of scanning information corresponds to the entire linear excitation range can be obtained in advance according to the setting of the specific operating parameters of the system. The specific operating parameters of the system can include, but are not limited to, the moving direction and moving speed of the driving module 7 driving the carrying module 5.

[0061] In some embodiments of this specification, in the scanning information output module, after outputting all the scanning information corresponding to the entire linear excitation range at the same position on the imaging plate 4, a preset number of line break flags need to be output, and then all the scanning information corresponding to the next position of the entire linear excitation range on the imaging plate 4 is output with a line break.

[0062] The driving module 7, when a preset number of line break flags are output in the scanning information output module, drives the carrying module 5 to move so that the linear excitation range of the scanning device on the imaging plate 4 is moved to the next position on the imaging plate 4.

[0063] First, by adding line break flags, the distinguishability between the respective scanning information corresponding to different positions of the overall linear excitation range on the imaging plate 4 is further increased, thereby further improving the final imaging effect.

[0064] Secondly, it is avoided that the driving module 7 drives the carrying module 5 to move before all the scanning information corresponding to a certain position of the overall linear excitation range on the imaging plate 4 is scanned, so that the overall linear excitation range of the scanning device on the imaging plate 4 is moved to the next position on the imaging plate, thereby ensuring the comprehensiveness of the scanning of the imaging plate 4.

[0065] In some embodiments of this specification, the scanning device further includes a first acquisition module, a second acquisition module, and a control module; The first acquisition module pre-acquires the optical path information corresponding to different reflection optical paths 8 respectively; The second acquisition module pre-acquires the optical power control information corresponding to different reflection optical paths 8 respectively based on the pre-acquired optical path information corresponding to different reflection optical paths 8 respectively; The control module performs power control on the laser beam emitted by the emission module 1 based on the pre-acquired optical power control information corresponding to different reflection optical paths 8 respectively, so that the light intensities are the same when the laser beam irradiates different positions of the imaging plate 4 through different reflection optical paths 8 in sequence for excitation.

[0066] The reflection module sequentially performs reflection operations on the laser beam in different reflection directions, so that the laser beam irradiates different positions of the imaging plate 4 through different reflection optical paths 8 in sequence for excitation. And before performing the reflection operation, the optical path information corresponding to different reflection optical paths 8 is pre-acquired respectively, and based on the pre-acquired optical path information corresponding to different reflection optical paths 8 respectively, the optical power control information corresponding to different reflection optical paths 8 is pre-acquired respectively. Finally, the power of the laser beam emitted by the emission module 1 is controlled based on the pre-acquired optical power control information corresponding to different reflection optical paths 8 respectively, so that the light intensities are the same when the laser beam irradiates different positions of the imaging plate 4 through different reflection optical paths 8 in sequence for excitation. This can ensure the consistency of the excitation conditions at different positions of the imaging plate 4 on the basis of improving the excitation efficiency of the imaging plate 4, and thus improve the final imaging quality.

[0067] It can be understood that for the emission module 1, as the cumulative working time increases, the same power control signal may finally enable the emission module 1 to emit laser beams with different optical powers. Because the laser diode or other light-emitting elements in the emission module 1 will age with the increase of use time, which may lead to a decrease in its output efficiency.

[0068] Therefore, in some embodiments of this specification, the emission module 1 also emits calibration light; The second acquisition module also pre-acquires the preset emission power information of the calibration light; The second acquisition module also pre-acquires the theoretical starting induction current of the calibration light based on the preset emission power information of the calibration light pre-acquired; The control module also controls the emission module 1 to emit the calibration light based on the preset emission power information pre-acquired; The scanning device includes a first photoelectric conversion unit disposed beside the starting end of the calibration light path to sense the calibration light and generate an actual starting induction current; The second acquisition module also acquires first control calibration information based on the pre-acquired theoretical starting induction current and the actual starting induction current generated by the first photoelectric conversion unit; The control module controls the power of the laser light emitted by the emission module 1 based on the pre-acquired light power control information corresponding to each of the different reflection light paths 8 and the first control calibration information, so that the light intensities are the same when the laser light irradiates different positions of the image plate 4 through different reflection light paths 8 in sequence for excitation.

[0069] It can be understood that there may be a power emission error in the emission module 1 itself. Therefore, by adding a first photoelectric conversion unit and acquiring first control calibration information based on the pre-acquired theoretical starting induction current and the actual starting induction current generated by the first photoelectric conversion unit, the emission power error of the laser emitted by the emission module 1 is compensated.

[0070] In some embodiments of this specification, the reflection module 1 also performs a reflection operation on the calibration light so that the calibration light irradiates the image plate 4 through the calibration light path; The first acquisition module also pre-acquires the light path information of the calibration light path; The second acquisition module also pre-acquires the theoretical terminal induction current when the calibration light reaches the end of the calibration light path based on the preset emission power information of the calibration light pre-acquired and the light path information of the calibration light path pre-acquired; The scanning device further includes a second photoelectric conversion unit disposed beside the end of the calibration light path to sense the calibration light and generate an actual terminal induction current; The second acquisition module also acquires second control calibration information based on the pre-acquired theoretical terminal induction current and the actual terminal induction current generated by the second photoelectric conversion unit; The control module controls the power of the laser light emitted by the emission module 1 based on the pre-acquired light power control information corresponding to each of the different reflection light paths 8, the first control calibration information, and the second control calibration information, so that the light intensities are the same when the laser light irradiates different positions of the image plate 4 through different reflection light paths 8 in sequence for excitation.

[0071] It is understandable that due to the differences in the scanning environment, there are differences in the optical power loss of the laser beam during the irradiation of the imaging plate 4. Therefore, by setting the second photoelectric conversion unit and based on the theoretically obtained terminal induction current and the actual terminal induction current generated by the second photoelectric conversion unit, the second control calibration information is obtained to compensate for the laser beam power error caused by the scanning environment factors.

[0072] In some embodiments of the present specification, the emission module 1 includes a circular aperture structure disposed on the optical path of the laser beam leading to the reflection module (note: the aperture structure can be directly disposed at the laser emission port of the emission module 1, Figure 1 and this structure is not shown in the figure).

[0073] It is understandable that in a laser imaging system, it is optimal for the laser spot presented on the imaging plate 4 to be circular because a circular spot has a uniform light intensity distribution, which can provide a more uniform excitation, thus obtaining a higher-quality image. However, in practical applications, due to the influence of various factors, the spot may be elliptical or other irregular shapes. Therefore, in the embodiments of the present specification, a circular aperture structure is disposed on the optical path of the laser beam leading to the reflection module to cut off the irregular part of the light beam, thereby obtaining a spot closer to a circle, and further achieving a more uniform excitation effect and improving the final imaging quality.

[0074] Referring to Figure 2 as shown, for points e, f, and g, there are differences in the optical path lengths of the three corresponding reflection optical paths 8, differences in the reflection angles at the first planar mirror 21, and differences in the reflection angles at the second planar mirror 31, and all of the above differences will affect the light intensity when the laser beam reaches the imaging plate 4, and further affect the excitation effect on the imaging plate 4.

[0075] Regarding the optical path length, during the propagation of light, its intensity will decrease with the increase in distance. This is because when light propagates in a medium, part of the light energy will be absorbed or scattered by the medium. Therefore, the longer the optical path, the more severe the light intensity attenuation.

[0076] Regarding the two reflection angles, during the reflection process, the incident angles of the light rays with the mirror surface are different, resulting in different scattering or focusing effects of the light rays during reflection. Therefore, there are differences in the reflection angles, and the focusing effects of the laser beam when it reaches the imaging plate 4 are different, and thus the light intensities are also different.

[0077] Therefore, in some embodiments of the present specification, the optical path information includes at least one of the optical path length information of the reflection optical path 8, the reflection angle information of the reflection optical path 8 at the first planar mirror 21, and the reflection angle information of the reflection optical path 8 at the second planar mirror 31.

[0078] It should be noted that the optical path length information and reflection angle information of the reflection optical path 8 (the reflection angle information includes the reflection angle information of the reflection optical path 8 at the first plane mirror 21 and the reflection angle information of the reflection optical path 8 at the second plane mirror 31) are related to the laser light emission direction information of the emission module 1, the position information of the first plane mirror 21, the position information of the second plane mirror 31, the angle information between the rotation axis of the second plane mirror 31 and the first plane mirror 21, the set height information of the image plate 4, and the rotation angle information of the first plane mirror 21 (note: based on the rotation angle information of the first plane mirror 21, the angle between the first plane mirror 21 and the laser light emission route can be obtained).

[0079] It should also be noted that in the actual operation process, for the first plane mirror 21, its rotation angular velocity is usually constant. Therefore, there are differences in the spot spacings formed when the laser light is sequentially irradiated onto the image plate 4 through the first plane mirror 21 and the second plane mirror 31 (the spots at both ends of the image plate 4 are sparser, and the spots in the middle position of the image plate 4 are denser). Thus, the spot density in different position regions of the image plate 4 is different, and further, there are still differences in the number of photons received in different position regions of the image plate 4.

[0080] Therefore, in some embodiments, it is also possible to: Pre-acquire the spot density information in different position regions of the image plate 4 when the first plane mirror 21 rotates at a preset rotation angular velocity; The control module controls the power of the laser light emitted by the emission module 1 based on the pre-acquired optical power control information corresponding to different reflection optical paths 8 and the spot density information in the position regions of the image plate 4 corresponding to different reflection optical paths 8. And during the operation of the scanning device, only the rotation angle information of the first plane mirror 21 changes among the above relevant information. Therefore, the optical path length information and reflection angle information of the reflection optical path 8 only change with the change of the rotation angle of the first plane mirror 21. Therefore, each rotation angle of the first plane mirror 21 corresponds to a reflection optical path 8.

[0081] Therefore, only multiple rotation angle values are selected within the rotation angle range of the first plane mirror 21, and the optical path length information and reflection angle information of the reflection optical path 8 corresponding to each of the multiple rotation angle values are calculated in advance. Further, based on the optical path length information and reflection angle information of the reflection optical path 8 corresponding to each of the multiple rotation angle values (i.e., the optical path information corresponding to different reflection optical paths 8 pre-acquired in the first acquisition module), the optical power control information of the reflection optical path 8 corresponding to each of the multiple rotation angle values is pre-acquired.

[0082] Further, when the control module controls the power of the laser beam emitted by the emission module 1, it only needs to perform real-time power control on the laser beam emitted by the emission module 1 based on the real-time rotation angle of the first plane mirror 21 and the optical power control information of the reflection optical path 8 corresponding to each of the multiple rotation angle values obtained in advance, so that the light intensities of the laser beam irradiated to different positions of the image plate 4 through different reflection optical paths 8 in sequence during excitation are the same.

[0083] Currently, in order to ensure the final imaging effect, it is necessary to slow down the excitation speed of the image plate 4 and the detection scanning speed of the detection unit 611 for the image plate 4 to ensure the sufficient excitation of the image plate 4 by the laser beam and the sufficient detection scanning of the image plate 4 by the detection unit 611, thereby ensuring a high signal-to-noise ratio. And because in the embodiments of this specification, power control is performed on the laser beam emitted by the emission module 1, a circular aperture structure is added, the incident angle of the laser beam at the image plate 4 is adjusted through the second plane mirror 31, and multiple detection units 611 are set to detect and scan the image plate 4 in zones. Therefore, the signal-to-noise ratio can be greatly improved under the same excitation speed and the same detection scanning speed, which provides a basis for increasing the excitation speed and the detection scanning speed.

[0084] In some embodiments of this specification, the imaging system further includes a calibration module that performs a flat-field calibration operation on the target image to obtain a flat-field calibrated image.

[0085] Step 1: Use an X-ray machine to continuously take 30 blank images after exposure to obtain 30 bright-field images, and obtain a bright-field average image after mean processing; Step 2: Collect 30 images under darkroom conditions to obtain 30 blank dark-field images, and obtain a dark-field average image after mean processing; Step 3: Subtract the dark-field average image from the bright-field average image to obtain a bright-field calibration image, and calculate the Mean value of the bright-field calibration image. Step 4: Subtract the dark-field average image from the target image, then divide the result by the bright-field calibration image, multiply by the Mean value after obtaining the bias matrix to obtain the final flat-field calibrated image.

[0086] Therefore, the calibration module includes a bright-field average image acquisition unit, a dark-field average image acquisition unit, a Mean value calculation unit, and a calibration unit; The bright-field average image acquisition unit acquires the bright-field average image; The dark-field average image acquisition unit acquires the dark-field average image; The Mean value calculation unit calculates the Mean value of the bright-field calibration image based on the bright-field average image and the dark-field average image; The calibration unit corrects the target image based on the bright-field average image, the dark-field average image, and the Mean value of the bright-field calibration image to obtain a flat-field calibrated image.

[0087] In some embodiments of the present specification, since the operating states of the emission module 1, the detection and scanning module 61, and the reflection module in the scanning device or the imaging system are affected by temperature changes, and the image imaging effect is related to the operating states of the above modules, maintaining a stable temperature is crucial for image quality. In the embodiments of the present specification, a temperature control circuit is provided in the scanning device or the imaging system to monitor the operating temperature in real time and give feedback. When the temperature is too high, cooling measures are started. For example, a air duct design is added to accelerate gas exchange and flow, and for example, a thermoelectric cooler is used to actively dissipate heat from the detection and scanning module 61 (note: in some other embodiments, preheating can also be performed to increase environmental adaptability). Taking the detection and scanning module 61 as an example, when it is working, a nanosecond-level feedback with a speed of 10 to the power of minus 9 can be added to the detection and scanning module 61 each time the photocurrent is output, and the temperature change is collected and fed back to the drive voltage control end in the detection and scanning module 61 to compensate the voltage in real time, thereby ensuring the working stability of the detection and scanning module 61 when the temperature changes.

[0088] The above-described embodiments are only described in a preferred embodiment manner of the present specification, and do not limit the scope of the present specification. Without departing from the design spirit of the present specification, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present specification shall fall within the protection scope determined by the claims of the present specification.

Claims

1. An imaging system, characterized in that, It includes a scanning device, a detection scanning module that performs detection scanning on the imaging plate to obtain complete scanning information on the surface of the imaging plate, and an imaging module that performs imaging based on the complete scanning information on the surface of the imaging plate to obtain a target image; The scanning device includes a transmitting module and a reflecting module; The transmitting module emits laser light rays; The reflecting module sequentially performs reflection operations on the laser light rays in different reflection directions, so that the laser light rays are sequentially irradiated to different positions of the imaging plate in different reflection optical paths for excitation; The detection scanning module includes a plurality of detection units respectively arranged opposite to different positions of the imaging plate; Each detection unit continuously performs detection scanning on the imaging plate, but only regards the scanning information of the imaging plate at this time as valid when the real-time excitation position during the excitation of the imaging plate by the laser light rays is opposite to it.

2. An imaging system according to claim 1, wherein The reflecting module includes a galvanometer unit and a reflecting unit; The galvanometer unit includes a first planar mirror and a first driving subunit that drives the first planar mirror to rotate to sequentially perform reflection operations on the laser light rays in different reflection directions; The reflecting unit includes a second planar mirror that further reflects the laser light rays that have undergone the reflection operation of the first planar mirror, so that the laser light rays are sequentially irradiated to different positions of the imaging plate in different reflection optical paths for excitation; The reflecting unit further includes an adjusting mechanism that can rotate the second planar mirror to adjust the angle between the second planar mirror and the rotation axis of the first planar mirror; The rotation axis of the first planar mirror is parallel to the first planar mirror, and the rotation axis of the first planar mirror is perpendicular to the laser light emission direction, and the second planar mirror is parallel to the laser light emission direction.

3. An imaging system according to claim 2, characterized in that, The imaging system further includes a carrying module for carrying the imaging plate, and a driving module that drives the carrying module to move so that the linear excitation range of the scanning device on the imaging plate as a whole moves on the imaging plate, thereby realizing the complete excitation of the surface of the imaging plate by the scanning device; The detection scanning module is arranged opposite to the linear excitation range of the scanning device on the imaging plate, and the detection scanning module is arranged at the intermediate position between the height of the reflecting module and the height of the imaging plate in the height direction.

4. An imaging system according to claim 3, characterized in that, The detection scanning module includes a plurality of detection units that are arranged opposite to the linear excitation range of the scanning device on the imaging plate as a whole and are linearly arranged.

5. An imaging system according to claim 4, characterized in that, The imaging system further includes a linear position acquisition module, a marking module, and a masking module; The linear position acquisition module pre-acquires the linear position information corresponding to each of the plurality of detection units; The marking module performs a linear position information marking operation on the scanning information obtained by each of the plurality of detection units through detection scanning based on the linear position information corresponding to each of the plurality of detection units; The masking module performs a MASK masking operation on the scanning information obtained by the detection unit through detection scanning based on the real-time excitation position of the laser light rays on the imaging plate when the detection unit detects and scans the scanning information; The complete scanning information on the surface of the imaging plate is obtained based on all the scanning information after the linear position information marking operation and the MASK masking operation.

6. An imaging system according to claim 5, characterized in that, The imaging system further includes a scanning information output module; The scanning information output module outputs the scanning information after the linear position information marking operation and the MASK masking operation line by line to obtain a scanning information file as the complete scanning information on the surface of the imaging plate. In the scanning information output module, all the scanning information corresponding to the same position on the imaging plate for the overall linear excitation range is output in the same line, and all the scanning information corresponding to different positions on the imaging plate for the overall linear excitation range is output in different lines.

7. An imaging system according to claim 1, wherein The scanning device further includes a first acquisition module, a second acquisition module, and a control module. The first acquisition module pre-acquires the optical path information corresponding to different reflection optical paths. The second acquisition module pre-acquires the optical power control information corresponding to different reflection optical paths based on the pre-acquired optical path information corresponding to different reflection optical paths. The control module controls the power of the laser beam emitted by the emission module based on the pre-acquired optical power control information corresponding to different reflection optical paths, so that the light intensities are the same when the laser beam irradiates different positions on the imaging plate through different reflection optical paths for excitation in sequence.

8. An imaging system according to claim 7, wherein, The emission module also emits a calibration beam. The second acquisition module also pre-acquires the preset emission power information of the calibration beam. The second acquisition module also pre-acquires the theoretical starting induction current of the calibration beam based on the pre-acquired preset emission power information of the calibration beam. The control module also controls the emission module to emit the calibration beam based on the pre-acquired preset emission power information. The scanning device includes a first photoelectric conversion unit disposed beside the starting end of the calibration beam optical path to sense the calibration beam and generate an actual starting induction current. The second acquisition module also acquires first control calibration information based on the pre-acquired theoretical starting induction current and the actual starting induction current generated by the first photoelectric conversion unit. The control module controls the power of the laser beam emitted by the emission module based on the pre-acquired optical power control information corresponding to different reflection optical paths and the first control calibration information, so that the light intensities are the same when the laser beam irradiates different positions on the imaging plate through different reflection optical paths for excitation in sequence. And / or the emission module includes a circular aperture structure disposed on the optical path of the laser beam leading to the reflection module.

9. An imaging system according to claim 8, wherein The reflection module 1 also performs a reflection operation on the calibration beam so that the calibration beam irradiates the imaging plate along the calibration optical path. The first acquisition module also pre-acquires the optical path information of the calibration optical path. The second acquisition module also pre-acquires the theoretical end induction current of the calibration beam when it reaches the end of the calibration optical path based on the pre-acquired preset emission power information of the calibration beam and the pre-acquired optical path information of the calibration optical path. The scanning device further includes a second photoelectric conversion unit disposed beside the end of the calibration optical path to sense the calibration beam and generate an actual end induction current. The second acquisition module also acquires second control calibration information based on the pre-acquired theoretical end induction current and the actual end induction current generated by the second photoelectric conversion unit. The control module controls the power of the laser beam emitted by the emission module based on the pre-acquired optical power control information, first control calibration information, and second control calibration information corresponding to different reflection optical paths, so that the light intensities are the same when the laser beam irradiates different positions of the image plate in sequence through different reflection optical paths for excitation.

10. An imaging system according to claim 7, characterized in that, The optical path information includes at least one of the optical path length information of the reflection optical path, the reflection angle information of the reflection optical path at the first plane mirror, and the reflection angle information of the reflection optical path at the second plane mirror.

Images