An imaging device for graphene terahertz laser source array

Abstract

This utility model discloses an imaging device for a graphene terahertz laser source array, relating to the field of terahertz laser technology. It includes a mounting base on which a mounting mechanism for imaging a graphene terahertz laser source array is mounted. This utility model uses a first electric push rod to drive a gear rod and a gear block, controlling the rotation angle of the support shaft. This allows for precise adjustment of the mounting base and the angle of the laser source array mounted on it, adapting to different imaging requirements and improving the applicability of the imaging device. Then, through the coordinated work of a second electric push rod, a lifting block, a movable rod, and a movable bracket, the sealed outer shell can be automatically opened and closed, making operation convenient and quick. When the transmitter head is not in use, the sealed outer shell effectively seals and protects it, preventing dust, moisture, and other impurities from entering, avoiding contamination or damage to the transmitter head, and extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of terahertz laser technology, specifically to an imaging device for graphene terahertz laser source arrays. Background Technology

[0002] Graphene, a two-dimensional material composed of a single layer of carbon atoms, possesses a unique electronic structure and excellent physicochemical properties, exhibiting good optical response characteristics in the terahertz band. Terahertz laser source array imaging technology based on graphene has made significant progress in recent years, demonstrating enormous application potential in numerous fields such as security inspection, biomedical imaging, and non-destructive testing. This technology utilizes a graphene terahertz laser source array to emit terahertz waves of a specific frequency. After the terahertz waves interact with the object being detected, they carry information about the object. This information is then converted into a visual image by an imaging system, thereby enabling the detection and analysis of the object's internal structure and features. Terahertz scanning imaging devices represent an important application and development direction of terahertz waves in the field of security detection. The working principle of such devices is as follows: terahertz waves emitted by the terahertz source are reflected by a reflector plate, pass through the object being inspected, and are then acquired by a terahertz linear array camera. The transmission module of the terahertz scanning imaging device allows the object to pass through the detection area. The computer acquires the signal from the terahertz linear array camera and performs processing, display, and recognition of the signal to complete the detection and alarm of the object being inspected.

[0003] Reference patent (Publication No.: CN114966879B; Publication Date: 2023-03-24) discloses a terahertz imaging device, including a terahertz source for emitting terahertz waves; a reflecting device for guiding the terahertz waves to a working area; and a terahertz array camera mounted at the lower end of the working area for receiving terahertz waves. The terahertz imaging device also includes a conveying device and a carrying device. The conveying device drives the carrying device to move back and forth in a straight line. The carrying device passes through the working area and has a first through-hole for placing an envelope. The terahertz waves pass through the first through-hole. This solves the problem that existing terahertz waves passing through conveyor belts cause excessive interference, resulting in inaccurate detection effects in terahertz imaging devices.

[0004] Based on the aforementioned patent, the position of the support stage is adjusted by sliding the lead screw on the driven rod. However, when the rotation stops, there is no locking structure, which can easily cause slight rotation due to uneven force on one side, resulting in the relative position of the through hole and the terahertz source shifting. Furthermore, the transmitter head of the graphene terahertz laser source array imaging device is a key component, and its performance directly affects the imaging quality. However, existing imaging devices often do not pay enough attention to the protection of the transmitter head. When the transmitter head is not in use, there is a lack of a dedicated protective device, which exposes the transmitter head directly to the external environment. Dust, moisture, and other impurities can easily adhere to the transmitter head, contaminating its surface, affecting its optical performance, and reducing the emission efficiency and quality of the terahertz waves. Therefore, this utility model provides a graphene terahertz laser source array imaging device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an imaging device for a graphene terahertz laser source array. It solves the problem of adjusting the position of the support stage by sliding it on a driven rod using a lead screw. However, when rotation stops, there is no locking structure, which can easily cause slight rotation due to uneven force on one side, leading to misalignment of the through-hole and the terahertz source. Furthermore, the transmitter head of the graphene terahertz laser source array imaging device is a critical component, and its performance directly affects the imaging quality. However, existing imaging devices often do not adequately protect the transmitter head. When not in use, there is a lack of dedicated protective devices, leaving the transmitter head directly exposed to the external environment. Dust, moisture, and other impurities easily adhere to the transmitter head, contaminating its surface, affecting its optical performance, and reducing the transmission efficiency and quality of the terahertz waves.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a graphene terahertz laser source array imaging device, comprising a mounting base, wherein the mounting base is provided with a mounting mechanism for graphene terahertz laser source array imaging, the mounting mechanism comprising:

[0007] The adjustment component includes a sliding groove at the center of the upper surface of the mounting base, a support platform connected by a threaded assembly inside the sliding groove, a fixing plate fixed to one side of the support platform, a locking assembly for fixing inside the fixing plate, a mounting platform fixed to one end of the mounting base, a support shaft connected by a gear assembly at the upper end of the mounting platform, a mounting seat fixed to the upper end of the support shaft, support platforms fixed to the four ends of the upper surface of the mounting seat, a through hole through the interior of the support platform, and a cooling fan at the center of the upper surface of the mounting seat.

[0008] The protective component includes a mounting block fixed at one end of a support platform. The upper surface of the mounting block is provided with a pair of movable brackets connected by a pushing assembly. A sealing shell is fixed at the upper end of the movable brackets, and a rubber ring is fixed at the edge of the sealing shell.

[0009] Preferably, the threaded assembly includes a lead screw rotatably connected inside the slide groove, a protrusion is provided at the lower end of the support platform, and the protrusion is slidably connected to the slide groove. The protrusion is threadedly connected to the lead screw, and guide grooves are provided on both sides of the slide groove on the upper surface of the mounting base. The support platform is slidably connected to the guide grooves.

[0010] Preferably, the locking assembly includes a locking plate fixed to one side wall of the mounting base, a screw threadedly connected to the inside of the fixing plate, a positioning block rotatably connected to the lower end of the screw, and the lower end face of the positioning block fittingly connected to the upper end face of the locking plate.

[0011] Preferably, the gear assembly includes a positioning slide rail fixed at the edge of the upper surface of the mounting platform, a gear rod slidably connected inside the positioning slide rail, a first electric push rod fixed at one end of the gear rod, and the base of the first electric push rod being fixedly connected to the mounting platform. The support shaft is rotatably connected to the upper surface of the mounting platform, and tooth blocks are uniformly fixed on the outer wall of the support shaft. The gear rod and the tooth blocks are meshed together.

[0012] Preferably, the upper surface of the support platform is provided with a terahertz source emitting body, and one end of the terahertz source emitting body is provided with a transmitter head.

[0013] Preferably, the jacking assembly includes a second electric push rod that is fixedly fixed inside the mounting block. A lifting block is fixed to the telescopic end of the second electric push rod. Movable rods that are rotatably connected to both sides of the lifting block via a rotating shaft are provided. The movable bracket is located on the upper surface of the mounting block and is rotatably connected to the inner side of the movable bracket via a rotating shaft. The other end of the movable rod is rotatably connected to the inner side of the movable bracket via a rotating shaft. A T-shaped limiting bracket is fixed to the upper side of one side of the mounting block via a support rod. The two sides of the limiting bracket are used to fit and support the inner side of the movable bracket.

[0014] Beneficial effects

[0015] This invention provides an imaging device for a graphene terahertz laser source array. Compared with the prior art, it has the following advantages:

[0016] Firstly, the drive screw of this utility model has a threaded connection between the protrusion at the lower end of the support platform and the screw, and the protrusion can slide in the slide groove. The guide groove guides the support platform, allowing it to move smoothly laterally in the slide groove along the rotation direction of the screw. This satisfies the need to adjust the lateral position of the laser source array under different imaging requirements. After the support platform moves to the appropriate position, the screw is rotated, and the screw rotates in the threaded position of the fixed plate, causing the positioning block to move downward until the lower end face of the positioning block is tightly fitted with the upper end face of the locking plate, thereby fixing the fixed plate and the support platform connected to the fixed plate. The operation is simple and convenient, and it can reliably fix the support platform after the position is adjusted, preventing the imaging effect from being affected by accidental movement of the support platform during the imaging process, and ensuring the stability of the laser source array during operation.

[0017] Secondly, this invention uses a first electric push rod to drive the meshing transmission between the gear rod and the tooth block, which controls the rotation angle of the support shaft. This allows for precise adjustment of the angle of the mounting base and the laser source array mounted on it, adapting to imaging requirements at different angles and improving the applicability of the imaging device. Then, through the coordinated work of the second electric push rod, the lifting block, the movable rod, and the movable bracket, the sealed outer shell can be automatically opened and closed, making operation convenient and quick. When the transmitter head is not in use, the sealed outer shell can effectively seal and protect it, preventing dust, moisture, and other impurities from entering, avoiding contamination or damage to the transmitter head, and extending its service life. When the sealed outer shell is closed, the rubber ring at its edge fits tightly against the upper surface of the mounting base, forming a good sealing effect and isolating the transmitter head from the external environment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the support shaft structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the support platform structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the movable support structure of this utility model.

[0022] In the diagram: 1. Mounting base; 2. Slide groove; 201. Lead screw; 202. Support platform; 203. Guide groove; 3. Fixing plate; 301. Screw; 302. Positioning block; 303. Locking plate; 4. Mounting platform; 401. Support shaft; 402. Gear block; 403. First electric push rod; 404. Positioning slide rail; 405. Gear rod; 5. Mounting seat; 501. Support platform; 502. Through hole; 503. Cooling fan; 6. Terahertz source transmitter body; 601. Transmitter head; 7. Mounting block; 701. Movable bracket; 702. Sealed outer shell; 703. Rubber ring; 704. Second electric push rod; 705. Lifting block; 706. Movable rod; 707. Limit bracket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: an imaging device for graphene terahertz laser source arrays, including a mounting base 1, on which a mounting mechanism for graphene terahertz laser source array imaging is provided, the mounting mechanism including:

[0025] The adjustment component includes a slide groove 2 opened at the center of the upper surface of the mounting base 1. The slide groove 2 is provided with a support platform 202 connected by a threaded assembly. A fixing plate 3 is fixed to one side of the support platform 202. A locking assembly for fixing is provided inside the fixing plate 3. A mounting platform 4 is fixed to one end of the mounting base 1. A support shaft 401 connected by a gear assembly is provided on the upper end of the mounting platform 4. A mounting seat 5 is fixed to the upper end of the support shaft 401. Support platforms 501 are fixed at all four ends of the upper surface of the mounting seat 5. A through hole 502 is opened through the interior of the support platform 501. A cooling fan 503 is provided at the center of the upper surface of the mounting seat 5.

[0026] The protective component includes a mounting block 7 fixed at one end of a support platform 501. A pair of movable brackets 701 connected by a push assembly are provided on the upper surface of the mounting block 7. A sealing shell 702 is fixed at the upper end of the movable brackets 701, and a rubber ring 703 is fixed at the edge of the sealing shell 702.

[0027] Furthermore, when the terahertz source transmitter 6 is installed on the upper surface of the support platform 501 and is in operation, it will continuously generate heat during operation. At this time, the cooling fan 503 at the center of the upper surface of the mounting base 5 will start to perform active heat dissipation.

[0028] When the cooling fan 503 is working, it drives the surrounding air to form an airflow. Since the support platform 501 has a through hole 502, the through hole 502 provides a channel for the airflow. The airflow passes through the through hole 502 on the support platform 501, passes through the gap between the support platform 501 and the terahertz source emitting body 6, and flows through the side and surrounding area of ​​the terahertz source emitting body 6.

[0029] In a preferred embodiment, the threaded assembly includes a lead screw 201 rotatably connected inside the slide groove 2. A protrusion is provided at the lower end of the support platform 202, and the protrusion is slidably connected to the slide groove 2. The protrusion and the lead screw 201 are threadedly connected. Guide grooves 203 are provided on both sides of the slide groove 2 on the upper surface of the mounting base 1. The support platform 202 is slidably connected to the guide grooves 203. The locking assembly includes a locking plate 303 fixed to one side wall of the mounting base 1. A screw 301 is threadedly connected inside the locking plate 303. A positioning block 302 is rotatably connected to the lower end of the screw 301. The lower surface of the positioning block 302 is in contact with the upper surface of the locking plate 303. When the position of the support platform 202 needs to be adjusted, the lead screw 201 is driven by a motor. Since the protrusion at the lower end of the support platform 202 is threadedly connected to the lead screw 201, and the protrusion is slidably connected to the slide groove 2, the locking assembly is rotatably connected to the guide groove 202. The slide groove 2 is slidable, and the guide groove 203 guides the support platform 202, allowing the support platform 202 to move smoothly laterally in the slide groove 2 along the rotation direction of the lead screw 201. This satisfies the need to adjust the lateral position of the laser source array under different imaging requirements. After the support platform 202 moves to the appropriate position, the screw 301 is rotated, and the screw 301 rotates in the thread of the fixing plate 3, causing the positioning block 302 to move downward until the lower end face of the positioning block 302 is tightly attached to the upper end face of the locking plate 303, thereby fixing the fixing plate 3 and the support platform 202 connected to the fixing plate 3. The operation is simple and convenient, and the support platform 202 can be reliably fixed after the position is adjusted, preventing the imaging effect from being affected by the accidental movement of the support platform 202 during the imaging process, and ensuring the stability of the laser source array during operation.

[0030] The sliding connection between the guide groove 203 and the support platform 202 enhances the stability of the support platform 202 during movement, preventing it from shifting or shaking during movement, thereby ensuring the accuracy of the laser source array when adjusting its position.

[0031] In a preferred embodiment, the gear assembly includes a positioning slide rail 404 fixed at the edge of the upper surface of the mounting platform 4. A gear rod 405 is slidably connected inside the positioning slide rail 404. A first electric push rod 403 is fixed to one end of the gear rod 405, and the base of the first electric push rod 403 is fixedly connected to the mounting platform 4. A support shaft 401 is rotatably connected to the upper surface of the mounting platform 4. Tooth blocks 402 are uniformly fixed on the outer wall of the support shaft 401. The gear rod 405 is meshed with the tooth blocks 402. When the first electric push rod 403 is activated, the telescopic end of the first electric push rod 403 pushes the gear rod 405 to slide in the positioning slide rail 404. Since the gear rod 405 is meshed with the tooth blocks 402 on the outer wall of the support shaft 401, the movement of the gear rod 405 will drive the tooth blocks 402 to rotate, thereby causing the support shaft 401 to rotate on the upper surface of the mounting platform 4. The mounting seat 5 fixed to the upper end of the support shaft 401 also rotates accordingly.

[0032] The positioning slide rail 404 guides the gear rod 405, ensuring the smooth movement of the gear rod 405, thereby ensuring the stability and accuracy of the rotation of the support shaft 401.

[0033] In a preferred embodiment, a terahertz source emitting body 6 is provided on the upper surface of the support platform 501. A transmitter head 601 is provided at one end of the terahertz source emitting body 6. The pushing assembly includes a second electric push rod 704 fixed through the interior of the mounting block 7. A lifting block 705 is fixed to the telescopic end of the second electric push rod 704. Movable rods 706 are rotatably connected to both sides of the lifting block 705 via a rotating shaft. A movable bracket 701 is located on the upper surface of the mounting block 7 and rotatably connected via a rotating shaft. The other end of the movable rod 706 is rotatably connected to the inner side of the movable bracket 701 via a rotating shaft. A T-shaped limiting bracket 707 is fixed to the upper side of one side of the mounting block 7 via a support rod. The limiting bracket 707 is used to support the inner side of the movable bracket 701 on both sides. The sealing shell 702 rotates open and closes to support the transmitter head 601. 1. When not in use, the sealing housing 702 is sealed and protected. When it is necessary to open the sealing housing 702, the second electric push rod 704 is activated. The telescopic end of the second electric push rod 704 pushes the lifting block 705 to rise. The movable rods 706 connected to both sides of the lifting block 705 through the rotating shaft move upward accordingly. The other end of the movable rod 706 pushes the movable bracket 701 to rotate outward around its rotation axis on the upper end face of the mounting block 7, thereby lifting the sealing housing 702 upward and opening it. When it is necessary to close the sealing housing 702, the second electric push rod 704 retracts in the opposite direction, causing the lifting block 705 to fall. The movable rod 706 pulls the movable bracket 701 to rotate inward, and the sealing housing 702 falls and closes accordingly. During the rotation of the movable bracket 701, the limiting bracket 707 provides a fitting and supporting function to the inner side of the movable bracket 701, ensuring the stability of the rotation of the movable bracket 701.

[0034] The aforementioned electric actuator is model DT100-300, the cooling fan is powered by a stepper motor model 28HS33-1334A, and the lead screw is powered by a DC motor model RS-385.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] When the imaging device for graphene terahertz laser source array is in operation, the positions of each component are first adjusted by adjusting the components: when the position of the support stage 202 needs to be adjusted, the motor drives the lead screw 201. Because the protrusion at the lower end of the support stage 202 is threadedly connected to the lead screw 201 and slides in the slide groove 2, and the guide groove 203 guides the support stage 202, the support stage 202 moves smoothly laterally in the slide groove 2 along the rotation direction of the lead screw 201, so as to meet the adjustment of the lateral position of the laser source array under different imaging requirements;

[0037] After the support platform 202 is moved to the appropriate position, the screw 301 is rotated so that it rotates in the thread of the fixing plate 3, which drives the positioning block 302 to move downward until the lower end face of the positioning block 302 is tightly attached to the upper end face of the locking plate 303, thereby fixing the fixing plate 3 and the connected support platform 202.

[0038] When the angle of the mounting base 5 needs to be adjusted, the first electric push rod 403 is activated. Its telescopic end pushes the gear rod 405 to slide in the positioning slide rail 404. Since the gear rod 405 is meshed with the tooth block 402 on the outer wall of the support shaft 401, the movement of the gear rod 405 drives the tooth block 402 to rotate, thereby causing the support shaft 401 to rotate on the upper surface of the mounting platform 4. The mounting base 5, which is fixed to the upper end of the support shaft 401, also rotates accordingly.

[0039] When the terahertz source emitting body 6 is installed on the upper surface of the support platform 501 and is in operation, it will continuously generate heat. At this time, the heat dissipation fan 503 at the center of the upper surface of the mounting base 5 starts, driving the surrounding air to form an airflow. The airflow passes through the through hole 502 on the support platform 501, passes through the gap between the support platform 501 and the terahertz source emitting body 6, and flows through the side and surrounding area of ​​the terahertz source emitting body 6 to achieve heat dissipation.

[0040] In the protective assembly, when it is necessary to open the sealed outer shell 702, the second electric push rod 704 is activated, and its telescopic end pushes the lifting block 705 upward. The movable rods 706 on both sides of the lifting block 705 move upward accordingly, pushing the movable bracket 701 to rotate outward around the rotation axis of the upper end face of the mounting block 7, thus lifting the sealed outer shell 702 upward and opening it. When it is necessary to close the sealed outer shell 702, the second electric push rod 704 retracts in the opposite direction, causing the lifting block 705 to descend. The movable rods 706 pull the movable bracket 701 to rotate inward, and the sealed outer shell 702 descends and closes accordingly. The limiting bracket 707 provides a fitting support to the inner side of the movable bracket 701 during its rotation, ensuring rotational stability. When the sealed outer shell 702 is closed, its edge rubber ring 703 can seal and protect the transmitter head 601.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. An imaging device for a graphene terahertz laser source array, comprising a mounting base (1), characterized in that: The mounting base (1) is provided with a mounting mechanism for imaging a graphene terahertz laser source array, the mounting mechanism including: The adjustment component includes a slide groove (2) at the center of the upper surface of the mounting base (1), a support platform (202) connected by a threaded assembly is provided inside the slide groove (2), a fixing plate (3) is fixed on one side of the support platform (202), a locking assembly for fixing is provided inside the fixing plate (3), a mounting platform (4) is fixed at one end of the mounting base (1), a support shaft (401) connected by a gear assembly is provided at the upper end of the mounting platform (4), a mounting seat (5) is fixed at the upper end of the support shaft (401), a support platform (501) is fixed at the four ends of the upper surface of the mounting seat (5), a through hole (502) is provided inside the support platform (501), and a cooling fan (503) is provided at the center of the upper surface of the mounting seat (5). The protective component includes a mounting block (7) fixed at one end of a support platform (501). The upper surface of the mounting block (7) is provided with a pair of movable brackets (701) connected by a push assembly. A sealing shell (702) is fixed at the upper end of the movable brackets (701), and a rubber ring (703) is fixed at the edge of the sealing shell (702).

2. The imaging device for graphene terahertz laser source array according to claim 1, characterized in that: The threaded assembly includes a lead screw (201) rotatably connected inside the slide groove (2), a protrusion is provided at the lower end of the support platform (202), and the protrusion is slidably connected to the slide groove (2). The protrusion is threadedly connected to the lead screw (201). Guide grooves (203) are provided on both sides of the slide groove (2) on the upper surface of the mounting base (1). The support platform (202) is slidably connected to the guide grooves (203).

3. The imaging device for graphene terahertz laser source array according to claim 1, characterized in that: The locking assembly includes a locking plate (303) fixed to one side wall of the mounting base (1). The fixing plate (3) is internally threaded with a screw (301). The lower end of the screw (301) is rotatably connected to a positioning block (302). The lower end face of the positioning block (302) is in close contact with the upper end face of the locking plate (303).

4. The imaging device for graphene terahertz laser source array according to claim 1, characterized in that: The gear assembly includes a positioning slide rail (404) fixed at the edge of the upper surface of the mounting platform (4). A gear rod (405) is slidably connected inside the positioning slide rail (404). A first electric push rod (403) is fixed at one end of the gear rod (405), and the base of the first electric push rod (403) is fixedly connected to the mounting platform (4). A support shaft (401) is rotatably connected to the upper surface of the mounting platform (4). Tooth blocks (402) are uniformly fixed on the outer wall of the support shaft (401). The gear rod (405) and the tooth blocks (402) are meshed.

5. The imaging device for graphene terahertz laser source array according to claim 1, characterized in that: The upper surface of the support platform (501) is provided with a terahertz source emitting body (6), and one end of the terahertz source emitting body (6) is provided with a transmitter head (601).

6. The imaging device for graphene terahertz laser source array according to claim 1, characterized in that: The jacking assembly includes a second electric push rod (704) that is fixed through the inside of the mounting block (7). A lifting block (705) is fixed to the telescopic end of the second electric push rod (704). Movable rods (706) are provided on both sides of the lifting block (705) and are rotatably connected by a rotating shaft. The movable bracket (701) is located on the upper surface of the mounting block (7) and is rotatably connected by a rotating shaft. The other end of the movable rod (706) is rotatably connected to the inner side of the movable bracket (701) by a rotating shaft. A T-shaped limiting bracket (707) is fixed to the upper side of one side of the mounting block (7) by a support rod. The two sides of the limiting bracket (707) are used to fit and support the inner side of the movable bracket (701).

Images