A sector variable diaphragm

Abstract

The utility model relates to infrared light performance test technical field especially relates to a fan -shaped variable diaphragm. Including support platform, the top of support platform is fixed with support frame, the top of support frame is fixed with fixed ring, the inside of fixed ring is provided with rotating ring, the bottom of one side in rotating ring inside is fixed with first light -blocking sheet, the other side in rotating ring inside is provided with second light -blocking sheet, the front of rotating ring is fixed with first scale, one end of one side of fixed ring is fixed with indicating board, the side of second light -blocking sheet is provided with second scale. The utility model provides a fan -shaped variable diaphragm, through the cooperation of support platform, fixed ring, rotating ring, first light -blocking sheet and second light -blocking sheet, can pass through the position support of support platform and support frame to fixed ring, can pass through the rotation of second light -blocking sheet in first light -blocking sheet one side, realizes the adjustment of light -passing area, changes the fan -shaped light -emitting position through the rotation of rotating ring in fixed ring inside simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of infrared light performance testing technology, and in particular to a fan-shaped variable aperture. Background Technology

[0002] Infrared laser performance testing equipment is mainly used for the assembly and adjustment of optoelectronic systems. It can provide simulation of targets at infinity and simulation of laser echoes, and realize performance tests such as infrared detection distance testing, optical axis consistency, infrared detection sensitivity, laser beam divergence angle, laser receiving sensitivity, laser receiving field of view, and laser ranging of the tested products.

[0003] The infrared laser sensitivity testing device uses an optical platform as its workbench. All optical components are fixed on the optical platform. The aluminum alloy outer cover has dustproof and stray light elimination functions. The light outlet and maintenance window are designed with protective covers to maintain the integrity of the assembly table. There is space in front of the platform for the installation of power measurement devices, fan-shaped apertures, attenuators, and optical traps for simulating range measurement. The control cabinet is located below the platform.

[0004] In the process of infrared laser performance testing, a sector aperture is used. The sector aperture is installed at the light outlet of the test bench, and different light transmission areas are achieved by adjusting the sector aperture.

[0005] When using the above technology, the following technical problems were found in the existing technology: the existing sector-shaped variable aperture is not convenient to adjust as needed, and it is also not convenient to change the overall angle. Therefore, a sector-shaped variable aperture is designed to provide another technical solution to the above technical problems. Utility Model Content

[0006] Therefore, it is necessary to provide a sector-shaped variable aperture to address the above-mentioned technical problems, which is that existing sector-shaped variable apertures are not convenient to adjust as needed and are not convenient to change the overall angle during use.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A fan-shaped variable aperture includes a support platform, a support frame fixed to the top of the support platform, a fixed ring fixed to the top of the support frame, a rotating ring disposed inside the fixed ring, a first light-blocking plate fixed to the bottom of one side of the rotating ring, a second light-blocking plate disposed on the other side of the rotating ring, a first scale fixed to the front of the rotating ring, an indicator plate fixed to one end of one side of the fixed ring, and a second scale opened on one side of the second light-blocking plate.

[0009] In a preferred embodiment of the fan-shaped variable aperture provided by this utility model, positioning rings are fixed on both sides of the outer side of the rotating ring, and the positioning rings are slidably connected to the fixed ring.

[0010] In a preferred embodiment of the fan-shaped variable aperture provided by this utility model, a compression bolt is connected to the internal thread of one end of the fixing ring, and a compression pad is fixed to the tail end of the compression bolt.

[0011] In a preferred embodiment of the fan-shaped variable aperture provided by this utility model, a positioning mechanism for limiting the position is installed between the first light-blocking plate and the second light-blocking plate. The positioning mechanism includes a fixed column, a pressing plate, a rectangular block, and a fastening bolt. The fixed column is fixed inside the bottom end of the second light-blocking plate and is rotatably connected to the first light-blocking plate. The rectangular block is slidably connected inside the front side of the fixed column. The pressing plate is fixed to the front side of the rectangular block. The pressing plate and the rectangular block are slidably connected inside the fastening bolt. The tail end of the fastening bolt is threadedly connected to the fixed column.

[0012] In a preferred embodiment of the fan-shaped variable aperture provided by this utility model, a support mechanism for increasing stability is installed inside the support platform. The support mechanism includes support legs, a synchronization plate, a rotating shaft, and threaded sections. Synchronization plates are slidably connected to both sides inside the support platform. Support legs are fixed to both ends of the two synchronization plates on opposite sides. The support legs are slidably connected to the support platform. A rotating shaft is rotatably connected inside the support platform. Threaded sections are provided on both sides outside the rotating shaft, and the threads of the two threaded sections have opposite directions. The outer side of the threaded sections is threadedly connected to the synchronization plate.

[0013] In a preferred embodiment of the fan-shaped variable aperture provided by this utility model, drive grooves are provided inside both sides of the rotating shaft.

[0014] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0015] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0016] The present invention provides a fan-shaped variable aperture, which, through the cooperation of a support platform, a fixed ring, a rotating ring, a first light-blocking plate and a second light-blocking plate, can support the position of the fixed ring through the support platform and support frame, and can adjust the light transmission area by rotating the second light-blocking plate on one side of the first light-blocking plate. At the same time, the fan-shaped light output position can be changed by rotating the rotating ring inside the fixed ring.

[0017] By cooperating with the first light-blocking plate, the second light-blocking plate, the second scale, and the positioning mechanism, the rotation angle of the second light-blocking plate on one side of the first light-blocking plate can be displayed by the second scale. The movement of the rectangular block inside the fixed column is achieved by rotating the fastening bolt inside the fixed column, thereby pressing and fixing the positions of the first light-blocking plate and the second light-blocking plate, and fixing the position of the second light-blocking plate after adjustment.

[0018] By using the combination of the compression bolt, compression pad, and rotating ring, the rotating ring can rotate inside the fixed ring. The rotation angle of the rotating ring is displayed on the first scale by the indicator plate, which can change the position of the fan-shaped light output and measure the relevant parameters of different light transmission positions. The position of the rotating ring is fixed by the compression pad through the rotation of the compression bolt.

[0019] Through the cooperation of the support platform, support legs, synchronous plates, and rotating shaft, the rotating shaft can be driven to rotate via the drive groove. This causes the rotating shaft to drive the two synchronous plates to move in opposite directions via the threaded section. The synchronous plates then drive the support legs to move, and the reverse movement of the two support legs increases the stability of the support platform on the ground. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram showing the second light-blocking plate after adjustment according to this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the fixing ring of this utility model;

[0024] Figure 4 This is a schematic diagram of the positioning ring of this utility model;

[0025] Figure 5 This is a schematic diagram of the rectangular block structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the internal structure of the support platform of this utility model.

[0027] In the diagram: 1. Support platform; 2. Support frame; 3. Fixing ring; 4. Extrusion bolt; 5. Extrusion pad; 6. Indicator plate; 7. Rotating ring; 8. First scale; 9. Positioning ring; 10. First light-blocking plate; 11. Second light-blocking plate; 12. Second scale; 13. Fixing column; 14. Extrusion plate; 15. Rectangular block; 16. Fastening bolt; 17. Support leg; 18. Synchronizing plate; 19. Rotating shaft; 20. Threaded section; 21. Drive groove. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] Reference Figures 1-6 A fan-shaped variable aperture includes a support platform 1, a support frame 2 fixed to the top of the support platform 1, and a fixing ring 3 fixed to the top of the support frame 2. The support platform 1 supports the position of the fixing ring 3 through contact with the ground, and the support frame 2 increases the fixation between the support platform 1 and the fixing ring 3. A rotating ring 7 is provided inside the fixing ring 3, so that the rotating ring 7 can only rotate inside the fixing ring 3. A first light-blocking plate 10 is fixed to the bottom of one side inside the rotating ring 7, and a second light-blocking plate 11 is provided on the other side inside the rotating ring 7, so that the second light-blocking plate 11 can rotate on one side of the first light-blocking plate 10, thereby adjusting the light transmission area between the bottom of the second light-blocking plate 11 and the first light-blocking plate 10. By rotating the rotating ring 7 inside the fixing ring 3, the light transmission area between the first light-blocking plate 10 and the second light-blocking plate 11 can be adjusted, thereby changing the fan-shaped light emission position.

[0033] Preferably, a first scale 8 is fixed on the front of the rotating ring 7, and an indicator plate 6 is fixed on one end of one side of the fixed ring 3. The rotation angle of the rotating ring 7 inside the fixed ring 3 is displayed by the position of the indicator plate 6 indicating the first scale 8. A second scale 12 is provided on one side of the second light-blocking plate 11, so that the rotation of the second light-blocking plate 11 on the side of the first light-blocking plate 10 is displayed by the second scale 12, showing the angle between the bottom of the second light-blocking plate 11 and the top of the second scale 12.

[0034] Preferably, positioning rings 9 are fixed on both sides of the outer side of the rotating ring 7. The positioning rings 9 are slidably connected to the fixed ring 3, so that the rotation of the rotating ring 7 inside the fixed ring 3 is prevented from disengaging by the positioning rings 9. A pressing bolt 4 is connected to the internal thread of one end of the fixed ring 3, so that the rotation of the pressing bolt 4 can move away from or towards the rotating ring 7 in the opposite direction inside the fixed ring 3. A pressing pad 5 is fixed to the tail end of the pressing bolt 4, so that the rotation of the pressing bolt 4 can press the rotating ring 7 through the pressing pad 5, thereby restricting the rotation of the rotating ring 7 inside the fixed ring 3.

[0035] Preferably, the extrusion pad 5 is made of an elastic material such as rubber, and the friction is increased by the contact between the extrusion pad 5 and the rotating ring 7.

[0036] A positioning mechanism for limiting the position is installed between the first light-blocking plate 10 and the second light-blocking plate 11. The positioning mechanism includes a fixed post 13, a pressing plate 14, a rectangular block 15, and a fastening bolt 16. The fixed post 13 is fixed inside the bottom end of the second light-blocking plate 11, and the fixed post 13 is rotatably connected to the first light-blocking plate 10, so that the second light-blocking plate 11 can rotate around the fixed post 13 as the center on one side of the first light-blocking plate 10 to adjust the angle of the second light-blocking plate 11 on one side of the first light-blocking plate 10. The rectangular block 15 is slidably connected inside the front side of the fixed post 13, so that the rectangular block 15 is within the fixed post 13. The section can only be adjusted horizontally. A pressing plate 14 is fixed on the front of the rectangular block 15, so that the rotation of the pressing plate 14 drives the fixed column 13 to rotate through the rectangular block 15, and the fixed column 13 drives the second light-blocking plate 11 to rotate. A fastening bolt 16 is slidably connected inside the pressing plate 14 and the rectangular block 15. The tail end of the fastening bolt 16 is threadedly connected to the fixed column 13, so that when the fastening bolt 16 rotates, it presses and fixes the rectangular block 15 inside the fixed column 13, and the pressing of the first light-blocking plate 10 by the pressing plate 14 makes the second light-blocking plate 11 unable to rotate on one side of the first light-blocking plate 10.

[0037] The support platform 1 is equipped with a support mechanism to increase stability. The support mechanism includes support legs 17, synchronous plates 18, rotating shafts 19 and threaded sections 20. Synchronous plates 18 are slidably connected to both sides inside the support platform 1, so that the synchronous plates 18 can only move horizontally inside the support platform 1, allowing the two synchronous plates 18 to move closer to or further away from each other. Support legs 17 are fixed at both ends of the two synchronous plates 18 on the side that is further away from each other. The support legs 17 are slidably connected to the support platform 1, so that the movement of the synchronous plates 18 can drive the support legs 17 to move synchronously, thereby increasing the overall stability effect by extending the support legs 17 out of the support platform 1.

[0038] The support platform 1 is rotatably connected to a rotating shaft 19, which allows the rotating shaft 19 to rotate only inside the support platform 1. Both sides of the rotating shaft 19 are provided with drive grooves 21, which allow an external hexagonal wrench to enter the drive grooves 21 and drive the rotating shaft 19 to rotate. Both sides of the rotating shaft 19 are provided with threaded sections 20, and the threads of the two threaded sections 20 are opposite in direction. The outer side of the threaded section 20 is threadedly connected to the synchronous plate 18, so that the rotation of the rotating shaft 19 drives the threaded synchronous plate 18 to move inside the support platform 1 through the threaded section 20.

[0039] In this embodiment, each structure has its own service life. In actual manufacturing and application, the corresponding structure made of different materials can be replaced according to the needs of use.

[0040] The usage process of the sector-shaped variable aperture provided by this utility model is as follows: During use, the light-transmitting area of ​​the sector is changed according to experimental needs. This is achieved by rotating the fastening bolt 16, which moves within the fixed post 13. Simultaneously, the pressing plate 14 moves away from the fixed post 13 via the sliding of the rectangular block 15 against the fixed post 13. Then, the second light-blocking plate 11 is activated. Through the rotational connection between the fixed post 13 and the first light-blocking plate 10, the second light-blocking plate 11 rotates past the second scale. 12. The angle after rotation is displayed, and then the fan-shaped light transmission area is displayed through the blank area between the second light-blocking plate 11 and the first light-blocking plate 10. Then, the fastening bolt 16 is rotated in the opposite direction, so that the rotation of the fastening bolt 16 moves inside the fixing column 13, so that the fastening bolt 16 squeezes the extrusion plate 14. After the rectangular block 15 moves inside the fixing column 13, the first light-blocking plate 10 and the second light-blocking plate 11 are squeezed and fixed by the extrusion plate 14, and the second light-blocking plate 11 and the first light-blocking plate 10 are fixed after the angle is adjusted.

[0041] Furthermore, by adjusting the fan-shaped light transmission area between the first light-blocking plate 10 and the second light-blocking plate 11, when the first light-blocking plate 10 and the second light-blocking plate 11 form a complete circle, the light transmission area is 0; when the first light-blocking plate 10 and the second light-blocking plate 11 form a semicircle, the light transmission area is 50%, and so on. The light transmission area can be adjusted arbitrarily between 0% and 50%.

[0042] Then, after the light transmission area is adjusted and determined, when it is necessary to adjust the position of the fan-shaped light transmission area, the rotating ring 7 is turned so that the rotating ring 7 rotates inside the fixed ring 3 through the positioning ring 9, and the rotation angle of the rotating ring 7 is displayed by the indicator plate 6 on the first scale 8, thereby adjusting the position of the fan-shaped light transmission area by 360° rotation. By changing the light output position of the fan, the relevant parameters of different light transmission positions are measured.

[0043] When it is necessary to increase the stability of the support platform 1 on the ground, the tool is inserted into the drive groove 21 to drive the rotating shaft 19 to rotate. The rotation of the rotating shaft 19 drives the threaded synchronous plate 18 to move through the threaded section 20. The movement of the synchronous plate 18 drives the support leg 17 to move synchronously, so that the support leg 17 extends out of the support platform 1 and contacts the ground, thereby increasing the overall stability of the support platform 1.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fan-shaped variable aperture, characterized in that, Includes a support platform (1), a support frame (2) fixed on the top of the support platform (1), a fixing ring (3) fixed on the top of the support frame (2), a rotating ring (7) provided inside the fixing ring (3), a first light-blocking plate (10) fixed on the bottom of one side of the rotating ring (7), a second light-blocking plate (11) provided on the other side of the rotating ring (7), a first scale (8) fixed on the front of the rotating ring (7), an indicator plate (6) fixed on one end of one side of the fixing ring (3), and a second scale (12) opened on one side of the second light-blocking plate (11).

2. The sector-shaped variable aperture according to claim 1, characterized in that, Positioning rings (9) are fixed on both sides of the outer side of the rotating ring (7), and the positioning rings (9) are slidably connected to the fixed ring (3).

3. A sector-shaped variable aperture according to claim 1, characterized in that, One end of the fixing ring (3) is internally threaded with a compression bolt (4), and the tail end of the compression bolt (4) is fixed with a compression pad (5).

4. A sector-shaped variable aperture according to claim 1, characterized in that, A positioning mechanism for limiting the position is installed between the first light-blocking plate (10) and the second light-blocking plate (11). The positioning mechanism includes a fixed column (13), a pressing plate (14), a rectangular block (15), and a fastening bolt (16). The fixed column (13) is fixed inside the bottom end of the second light-blocking plate (11), and the fixed column (13) is rotatably connected to the first light-blocking plate (10). The rectangular block (15) is slidably connected inside the front side of the fixed column (13). The pressing plate (14) is fixed on the front side of the rectangular block (15). The fastening bolt (16) is slidably connected inside the pressing plate (14) and the rectangular block (15). The tail end of the fastening bolt (16) is threadedly connected to the fixed column (13).

5. A sector-shaped variable aperture according to claim 1, characterized in that, The support platform (1) is equipped with a support mechanism for increasing stability. The support mechanism includes a support leg (17), a synchronization plate (18), a rotating shaft (19), and a threaded section (20). The synchronization plates (18) are slidably connected to both sides inside the support platform (1). The two ends of the synchronization plates (18) on opposite sides are fixed with support legs (17). The support legs (17) are slidably connected to the support platform (1). The rotating shaft (19) is rotatably connected inside the support platform (1). Threaded sections (20) are provided on both sides outside the rotating shaft (19), and the threads of the two threaded sections (20) are opposite in direction. The outer side of the threaded section (20) is threadedly connected to the synchronization plate (18).

6. A sector-shaped variable aperture according to claim 5, characterized in that, The rotating shaft (19) has drive grooves (21) on both sides.

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