Ray collimator

Abstract

The utility model discloses a ray collimator, and belongs to the technical field of ray collimators. The ray collimator takes the shell as a main body structure, one end of the ray collimator is provided with the ray input port, the other end of the ray collimator is provided with the ray output port, and three stages of ray filtering cavities are designed in the shell between the ray input port and the ray output port, so that divergent ray beams output from the output port can be reduced to the greatest extent, and the collimation of the ray beams is improved. The collimator is compact in structural design, can be easily integrated with various ray sources, and can realize collimation integration of area array rays of different sizes; disassembly and replacement are convenient, ray collimation light spots of different sizes can be arranged in different areas on the same collimation plane array, and the application requirements of different rays are met; in addition, according to different divergence angles of different ray sources, the collimation distance can be prolonged, and micro-focus parallel light spots are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of X-ray collimator technology, and specifically relates to a X-ray collimator. Background Technology

[0002] In the field of optical fiber communication, the transmission efficiency and accuracy of optical signals are crucial to communication quality. Collimators, as key optical components used for input and output in optical fiber communication devices, primarily function to convert diverging light from the optical fiber into parallel light (i.e., a Gaussian beam), thereby ensuring that the optical signal can be coupled into the desired device with maximum efficiency, or that the optical signal can be received by the receiving equipment with maximum efficiency. This conversion process not only improves the transmission efficiency of the optical signal but also enhances its stability, making it an indispensable part of optical fiber communication systems.

[0003] In the field of radiology or radiation-based medical diagnostics, the precision and shape of the radiation field are crucial to the effectiveness of radiotherapy. As a key component of the radiation head, the X-ray collimator, through specific design and adjustment, can generate a radiation field with a specific shape and profile. Precise control of this radiation field is essential to ensuring that radiotherapy accurately targets the lesion while minimizing damage to surrounding healthy tissues.

[0004] However, the stability and accuracy of collimators, whether in fiber optic communication or medical accelerators, are affected by a variety of factors. Regular collimation and calibration are necessary to ensure these devices operate stably and maintain their accuracy and performance.

[0005] In radiation imaging, a collimator is a device specifically designed to collimate radiation detectors or imaging systems. Due to their unique structure, area array sensors typically contain a large number of sensing elements, each requiring precise collimation. Area array collimators, based on a comparison method, compare the area array sensor or system with a standard device of known accuracy to determine its error and perform appropriate collimation. However, due to the complexity of area array sensor structures, unidirectional collimation is difficult to achieve during the collimation process; it is necessary to comprehensively consider the interactions and mutual influences between multiple sensing elements. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a ray collimator to solve the problem that unidirectional collimation is difficult to achieve in the collimation process of the existing array collimator.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A radiation collimator includes a housing, with a radiation input end and a radiation output end at two ends, respectively. The radiation input end has a radiation input port, and the radiation output end has a radiation output port.

[0009] The X-ray input port and X-ray output port are connected sequentially through a primary X-ray filter cavity, a secondary X-ray filter cavity, and a tertiary X-ray filter cavity.

[0010] The further improvement of this utility model is as follows:

[0011] Preferably, the primary, secondary, and tertiary radiation filter cavities have the same cross-sectional shape and are arranged coaxially.

[0012] Preferably, the cross-sectional area of ​​the primary radiation filter cavity is larger than that of the secondary radiation filter cavity, and the cross-sectional area of ​​the secondary radiation filter cavity is larger than that of the tertiary radiation filter cavity.

[0013] Preferably, the length of the primary radiation filter cavity is greater than the length of the secondary radiation filter cavity, and the length of the secondary radiation filter cavity is greater than the length of the tertiary radiation filter cavity.

[0014] Preferably, the ray input end is a cylindrical embedded interface.

[0015] Preferably, the ratio of the length to the diameter of the ray collimator is greater than 4, and the diameter is the outer diameter of the primary ray filter cavity.

[0016] Preferably, the ray input end is provided with a collimator mounting bayonet.

[0017] Preferably, the cross-sections of the X-ray input port, X-ray output port, primary X-ray filter cavity, secondary X-ray filter cavity, and tertiary X-ray filter cavity are set according to requirements.

[0018] Preferably, the diameter of the radiation output port is adjusted according to the diameter of the radiation beam.

[0019] Preferably, the device includes a detachably connected output head and a main body, with the radiation output end located at the outer end of the output head, the secondary and tertiary radiation filter cavities located in the output head, the radiation input end located at the outer end of the main body, and the primary radiation filter cavity located in the main body.

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

[0021] This invention discloses a beam collimator. The beam collimator employs a beam output end, which facilitates precise alignment of the beam with the detector, improving the spatial resolution of beam imaging. Furthermore, the beam collimator utilizes a large aspect ratio and thick sidewalls, effectively improving the parallelism of the beam output while reducing side beam overflow, thereby minimizing detector pixel crosstalk caused by lateral beam irradiation. Inside the beam collimator, a three-stage coaxial beam filter is employed to minimize the emitted beam exiting the outlet, improving beam collimation. The collimator has a compact design, is easily integrated with various beam sources, and can achieve beam collimation integration of beams with different sizes. Disassembly and replacement are convenient, allowing for the setting of beam collimation spots of different sizes in different areas of the same collimation array to meet the needs of different beam applications. In addition, the collimation distance can be extended according to the different divergence angles of different beam sources to achieve micro-focal parallel spots.

[0022] Furthermore, the three-stage X-ray filter cavities have identical internal shapes, which facilitates the machining of the entire collimator's internal cavity.

[0023] Furthermore, the radiation can be filtered through a cavity with a variable cross-section.

[0024] Furthermore, the X-ray input end is a straight-tube embedded interface, which facilitates quick replacement of the collimator and assembly of the collimator array, improves X-ray imaging efficiency, and avoids X-ray leakage.

[0025] Furthermore, the collimator is equipped with a bayonet, and the auxiliary collimator is installed on the radiation generating device, which can be seamlessly and securely connected to the radiation source to prevent radiation leakage. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of another form of the present utility model.

[0028] The components are: 1. Housing; 2. Primary X-ray filter chamber; 3. Secondary X-ray filter chamber; 4. Tertiary X-ray filter chamber; 5. X-ray output port; 6. X-ray input port; 7. X-ray output end; 8. Mounting bayonet; 9. Straight cylindrical embedded interface; 10. X-ray input end; 11. Output head; 12. Main body. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings:

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] This utility model discloses a radiation collimator, including a housing 1, a primary radiation filter cavity 2, a secondary radiation filter cavity 3 and a tertiary radiation filter cavity 4, a radiation output port 5, a radiation input port 6, a radiation output end 7, a collimator mounting bayonet 8 and a radiation input end 9.

[0032] The main structure of the X-ray collimator is a shell 1, with an internal cavity for X-ray penetration. The cavity is enclosed by the thick-walled shell 1. The cavity runs along the central axis of the X-ray collimator, penetrating both the X-ray input and output ends of the shell.

[0033] In some embodiments of this utility model, the cross-section of the shell 1 can be circular or rectangular, and can be adjusted according to the specific application scenario.

[0034] One end of the housing 1 is the X-ray input end, and the other end is the X-ray output end. The cross-sectional diameter of the X-ray output end is smaller than that of the X-ray input end. The X-ray input end has an X-ray input port 6, and the X-ray output end is a frustoconical X-ray output end 7. The X-ray output end 7 has an X-ray output port 5, the diameter of which can be adjusted according to the required X-ray beam diameter. The X-ray input end 9 is a straight-cylinder internally embedded interface. This structure allows the interface to be directly embedded into the equipment or structure of the X-ray generator, achieving a more compact and integrated connection and preventing X-ray leakage. A mounting bayonet 8 is provided at the X-ray collimator input end, which can stably and securely connect the X-ray collimator to the X-ray source.

[0035] From the X-ray input port 6 to the X-ray output port 5, a three-stage coaxial X-ray filter cavity is installed within the X-ray collimator to achieve high-quality parallel X-ray output. The cavity, from the X-ray input end to the output end of the housing 1, is divided into a primary X-ray filter cavity 2, a secondary X-ray filter cavity 3, and a tertiary X-ray filter cavity 4. The length of the primary X-ray filter cavity 2 is greater than the length of the secondary X-ray filter cavity 3, and the length of the secondary X-ray filter cavity 3 is greater than the length of the tertiary X-ray filter cavity 4; the diameter of the primary X-ray filter cavity 2 is greater than the diameter of the secondary X-ray filter cavity 3, and the diameter of the secondary X-ray filter cavity 3 is greater than the diameter of the tertiary X-ray filter cavity 4.

[0036] It should be noted that the housing 1, the primary radiation filter chamber 2, the secondary radiation filter chamber 3, the tertiary radiation filter chamber 4, the radiation input port 6, and the radiation output port 5 are all arranged on the same axis.

[0037] As a preferred embodiment, the cross-section of the cavity is circular, the radius of the primary radiation filter cavity 4 is larger than that of the secondary radiation filter cavity 3, and the radius of the secondary radiation filter cavity 3 is larger than that of the primary radiation filter cavity 2.

[0038] The ratio of the length to the maximum diameter of housing 1 (excluding the mounting opening 8) is greater than 4.

[0039] See Figure 2 In some embodiments of this utility model, the housing 1 is divided into an output head 11 and a main body 12, which are detachably connected, specifically by threaded connection or snap-fit ​​connection. The output head 11 is the radiation output end 7, and internally it is provided with a secondary radiation filter chamber 3 and a primary radiation filter chamber 2. The primary radiation filter chamber 2 is disposed in the main body 12. In this embodiment, because the output head 11 and the main body 12 are detachably connected, the output head 11 can be replaced, and different output heads 11 can be set with different diameters of radiation output ports 5, thereby meeting the radiation beam diameter requirements. Furthermore, this embodiment can also adjust the radiation filtering effect according to the filtration requirements, specifically the diameter and length of the three filter chambers.

[0040] The X-rays of this invention enter through the X-ray inlet 6, pass through a three-stage X-ray filter cavity, and finally exit through the X-ray outlet 5. The three-stage filter cavity effectively filters out X-ray beams that are not parallel to the collimator at each stage; it also prevents X-rays that are not parallel to the collimator from affecting the parallelism of the exit X-ray beam through multiple reflections; simultaneously, it meets the collimation distance requirements for X-rays with different divergence angles. Multi-stage collimation can shorten the collimation distance and improve space utilization.

[0041] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0042] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ray collimator, characterized in that, Includes a housing (1), with a radiation input end (9) and a radiation output end (7) at its two ends, respectively. The radiation input end (9) is provided with a radiation input port (6), and the radiation output end (7) is provided with a radiation output port (5). The X-ray input port (6) and the X-ray output port (5) are connected in sequence through a primary X-ray filter cavity (2), a secondary X-ray filter cavity (3) and a tertiary X-ray filter cavity (4).

2. The ray collimator according to claim 1, characterized in that, The first-level radiation filter cavity (2), the second-level radiation filter cavity (3), and the third-level radiation filter cavity (4) have the same cross-sectional shape and are arranged on the same axis.

3. The ray collimator according to claim 1, characterized in that, The cross-sectional area of ​​the primary radiation filter cavity (2) is greater than that of the secondary radiation filter cavity (3), and the cross-sectional area of ​​the secondary radiation filter cavity (3) is greater than that of the tertiary radiation filter cavity (4).

4. A ray collimator according to claim 1, characterized in that, The length of the primary radiation filter cavity (2) is greater than the length of the secondary radiation filter cavity (3), and the length of the secondary radiation filter cavity (3) is greater than the length of the tertiary radiation filter cavity (4).

5. A ray collimator according to claim 1, characterized in that, The ray input end (9) is a straight-tube embedded interface.

6. A ray collimator according to claim 1, characterized in that, The ratio of the length to the diameter of the ray collimator is greater than 4, and the diameter is the outer diameter of the ray collimator outside the primary ray filter cavity (2).

7. A ray collimator according to claim 1, characterized in that, The X-ray input end (9) is provided with a collimator mounting bayonet (8).

8. A ray collimator according to claim 1, characterized in that, The cross-sections of the X-ray input port (6), X-ray output port (5), primary X-ray filter cavity (2), secondary X-ray filter cavity (3) and tertiary X-ray filter cavity (4) are set according to requirements.

9. A ray collimator according to claim 1, characterized in that, The diameter of the ray output port (5) is adjusted according to the diameter of the ray beam.

10. A ray collimator according to claim 1, characterized in that, It includes a detachably connected output head (11) and a main body (12). The X-ray output end (7) is located at the outer end of the output head (11). The secondary X-ray filter cavity (3) and the tertiary X-ray filter cavity (4) are located in the output head (11). The X-ray input end (9) is located at the outer end of the main body (12). The primary X-ray filter cavity (2) is located in the main body (12).

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