Optical filter fast switching mechanism of multispectral imager

Abstract

The utility model provides an optical filter fast switching mechanism of multispectral imager, relates to multispectral imager technical field, including: imager body, one end of imager body is equipped with the replacement mechanism, the replacement mechanism includes the fixed block, the inside of fixed block is equipped with the limit rod, the outer surface of limit rod is sleeved with the slider, and the slider is equipped with the fixed block. The sliding block is slidably connected with the limiting rod, and the outer surface of the limiting rod is sleeved with a first spring. According to the multi-spectral imager, through the arrangement of the replacement mechanism, different optical filters can be conveniently replaced when the multi-spectral imager is used, and the replaced optical filters can be kept in a stable state, so that the multi-spectral imager can monitor crops according to actual use requirements; therefore, the optical filter body can slide linearly.

Description

Technical Field

[0001] This utility model relates to the field of multispectral imager technology, and in particular to a filter rapid switching mechanism for a multispectral imager. Background Technology

[0002] A multispectral imager is a precision optical device that acquires physiological information about crops through multi-band spectral sensing technology. It can capture reflectance data of multiple discrete bands in the visible to near-infrared range, providing quantitative agricultural monitoring methods. Its core value lies in non-destructive, rapid, and large-area diagnosis of crop health status, guiding variable fertilization, irrigation, and pest and disease control.

[0003] Existing multispectral imagers require the installation of filters at the imaging lens during use. Different filters can bring different effects to the multispectral imager. Usually, filters are replaced by replacement, and fasteners are needed to limit the filter during replacement. Therefore, the replacement of filters in existing multispectral imagers is not convenient. To address this, we provide a quick filter switching mechanism for multispectral imagers. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing multispectral imagers where filter replacement is not convenient enough, and to provide a fast filter switching mechanism for multispectral imagers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a filter rapid switching mechanism for a multispectral imager, comprising: an imager body, a replacement mechanism at one end of the imager body, the replacement mechanism including a fixing block, a limiting rod inside the fixing block, a slider sleeved on the outer surface of the limiting rod, the slider being slidably connected to the limiting rod, a spring sleeved on the outer surface of the limiting rod, a connecting rod fixedly connected to the top of the slider, a mounting block fixedly connected to one end of the connecting rod, a filter body sleeved inside the mounting block, a threaded ring sleeved inside the mounting block, the threaded ring being threadedly connected to the mounting block, a rubber pad fixedly connected to one side of the threaded ring, a circular hole formed on the threaded ring, and an auxiliary mechanism inside the fixing block.

[0006] In a preferred embodiment, the fixing block is fixedly connected to the imager body, the limiting rod is fixedly connected to the fixing block, and the two ends of the spring are respectively fixedly connected to the outer surface of the slider and the inner wall of the fixing block.

[0007] In a preferred embodiment, the auxiliary mechanism includes a pressing block, which is fixedly connected to a connecting rod, and a beveled block is sleeved inside the fixed block, which is slidably connected to the fixed block.

[0008] In a preferred embodiment, one end of the beveled block is fixedly connected to a pull rod, which is sleeved inside the fixed block and slidably connected to the fixed block.

[0009] In a preferred embodiment, a limiting ring is fitted onto the outer surface of the pull rod, and the limiting ring is fixedly connected to the pull rod.

[0010] In a preferred embodiment, a second spring is sleeved on the outer surface of the pull rod, and a pull block is fixedly connected to one end of the pull rod.

[0011] In a preferred embodiment, the two ends of the second spring are respectively fixedly connected to the outer surface of the limiting ring and the inner wall of the fixing block.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] This invention, through the inclusion of a replacement mechanism, allows for convenient replacement of different filters in the multispectral imager during use, and the replaced filters remain stable. This enables the multispectral imager to monitor crops according to actual usage needs. The inclusion of a slider and a limiting rod allows the filter body to slide linearly, achieving a suitable position for precise alignment with the imaging lens. A spring ensures the filter body automatically resets after switching, allowing users to easily switch between different filters and improving the efficiency of filter switching. An auxiliary mechanism is also included to fix the slid-out filter body, ensuring its stable operation. Attached Figure Description

[0014] Figure 1 A perspective view of a filter rapid switching mechanism for a multispectral imager provided by this utility model.

[0015] Figure 2 This is a split schematic diagram of a filter rapid switching mechanism for a multispectral imager provided by this utility model.

[0016] Figure 3 This invention provides a schematic diagram of the spring installation for a rapid filter switching mechanism in a multispectral imager.

[0017] Figure 4 This invention provides a schematic diagram of the installation of a limiting ring for a rapid filter switching mechanism in a multispectral imager.

[0018] Figure 5 This utility model provides a schematic diagram of the filter body installation for a filter fast switching mechanism in a multispectral imager.

[0019] Legend:

[0020] 1. Imager body; 2. Replacement mechanism; 3. Auxiliary mechanism; 21. Fixing block; 22. Limiting rod;

[0021] 23. Slider; 24. Spring 1; 25. Connecting rod; 26. Mounting block; 27. Filter body;

[0022] 28. Threaded ring; 29. ​​Rubber pad; 201. Round hole; 31. Extrusion block; 32. Angled block;

[0023] 33. Pull rod; 34. Limiting ring; 35. Spring 2; 36. Pull block. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figures 1-5 As shown, this utility model provides a technical solution: a filter rapid switching mechanism for a multispectral imager, comprising: an imager body 1, a replacement mechanism 2 at one end of the imager body 1, the replacement mechanism 2 including a fixing block 21, a limiting rod 22 inside the fixing block 21, a slider 23 sleeved on the outer surface of the limiting rod 22, the slider 23 slidably connected to the limiting rod 22, a spring 24 sleeved on the outer surface of the limiting rod 22, a connecting rod 25 fixedly connected to the top of the slider 23, and a mounting bracket fixedly connected to one end of the connecting rod 25. Mounting block 26, with filter body 27 sleeved inside mounting block 26, and threaded ring 28 sleeved inside mounting block 26, threaded ring 28 is threadedly connected to mounting block 26, rubber pad 29 is fixedly connected to one side of threaded ring 28, and a round hole 201 is opened on threaded ring 28. An auxiliary mechanism 3 is provided inside fixing block 21, fixing block 21 is fixedly connected to imager body 1, limiting rod 22 is fixedly connected to fixing block 21, and the two ends of spring 24 are respectively fixedly connected to the outer surface of slider 23 and the inner wall of fixing block 21.

[0027] In this embodiment, by providing a mounting block 26 for placing the filter body 27, and a threaded ring 28 threadedly connected to the mounting block 26, the threaded ring 28 can secure the filter body 27 with the cooperation of the mounting block 26. Furthermore, a rubber pad 29 is provided to prevent the threaded ring 28 from directly contacting the filter body 27 during rotation. Thus, the filter body 27 is protected from friction damage by the threaded ring 28 under the protection of the rubber pad 29. A circular hole 201 is provided on the threaded ring 28, allowing monitoring personnel to use auxiliary tools to adjust the threaded ring. 28 is driven until the threaded connection between the threaded ring 28 and the mounting block 26 is released. At the same time, a slider 23 is set, and the slider 23 can drive the connecting rod 25 and the mounting block 26 to move. However, when each slider 23 can no longer move, the position of the filter body 27 is suitable and can be used in conjunction with the imager body 1 for monitoring. A spring 24 is set, and the spring 24 is compressed under the limit of the limit rod 22 without twisting. Therefore, the spring 24 can use its elasticity to reset the filter body 27 that needs to be replaced, so that other filter bodies 27 can be easily switched.

[0028] Example 2

[0029] like Figures 1-5 As shown, the auxiliary mechanism 3 includes a pressing block 31, which is fixedly connected to the connecting rod 25. An angled block 32 is sleeved inside the fixed block 21 and is slidably connected to the fixed block 21. A pull rod 33 is fixedly connected to one end of the angled block 32 and is sleeved inside the fixed block 21. The pull rod 33 is slidably connected to the fixed block 21. A limit ring 34 is sleeved on the outer surface of the pull rod 33 and is fixedly connected to the pull rod 33. A spring 35 is sleeved on the outer surface of the pull rod 33 and a pull block 36 is fixedly connected to one end of the pull rod 33.

[0030] In this embodiment, by setting a squeezing block 31 and a beveled block 32, the squeezing block 31 can squeeze the beveled block 32 when sliding, so that the beveled block 32 slides into the interior of the fixed block 21. At the same time, the squeezing block 31 has a slot that fits with the beveled block 32, so that the beveled block 32 can be engaged with the squeezing block 31, so that the squeezing block 31 remains stable and will not reset. A limiting ring 34 is set, and the limiting ring 34 can compress the second spring 35 under the drive of the pull rod 33. Thus, the second spring 35 can generate elastic force and reset the beveled block 32 that lacks a limit.

[0031] Working principle:

[0032] like Figures 1-5As shown, when using this utility model, if it is necessary to move one of the filter bodies 27 in the replacement mechanism 2 to the imaging lens of the imaging body 1, the connecting rod 25 can be slid first. When the connecting rod 25 slides, it can drive the slider 23 to slide on the limiting rod 22. Then, the slider 23 can compress the spring 24 with the cooperation of the limiting rod 22, so that the spring 24 generates elastic force. At the same time, the connecting rod 25 will drive the mounting block 26, the filter body 27 and the threaded ring 28 to slide. During the sliding process, the connecting rod 25 will drive the pressing block 31 to press the beveled block 32, so that the beveled block 32 slides into the interior of the fixing block 21. The beveled block 32 can compress the spring 35 with the pull rod 33 and the limiting ring 34, so that the spring 35 generates elastic force until the limiting of the beveled block 32 by the pressing block 31 disappears. Then the elastic force of the spring 35 will be released instantly. The angled block 32 is reset, allowing it to engage with the inside of the pressing block 31, thus determining the positions of the mounting block 26 and the filter body 27. At this point, the filter body 27 can be used in conjunction with the imaging lens of the imager body 1. When it is necessary to replace another filter body 27, the pull block 36 can be pulled, which will cause the pull rod 33 and the angled block 32 to slide, disengaging the angled block 32 from the pressing block 31. This will release the elastic force of the spring 24, resetting components such as the slider 23, connecting rod 25, and filter body 27, and moving other filter bodies 27 to the appropriate positions. When it is necessary to remove the filter body 27, an auxiliary tool can be used to engage with the circular hole 201 on the threaded ring 28, causing the threaded ring 28 to rotate and disengaging the threaded connection between the threaded ring 28 and the mounting block 26, thereby allowing the filter body 27 to be removed.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A filter rapid switching mechanism for a multispectral imager, characterized in that, include: An imager body (1) is provided at one end of which a replacement mechanism (2) is provided. The replacement mechanism (2) includes a fixing block (21). A limiting rod (22) is provided inside the fixing block (21). A slider (23) is sleeved on the outer surface of the limiting rod (22). The slider (23) is slidably connected to the limiting rod (22). A spring (24) is sleeved on the outer surface of the limiting rod (22). A connecting rod (25) is fixedly connected to the top of the slider (23). One end of the connecting rod (25) is fixedly connected to a mounting block (26). A filter body (27) is sleeved inside the mounting block (26). A threaded ring (28) is sleeved inside the mounting block (26). The threaded ring (28) is threadedly connected to the mounting block (26). A rubber pad (29) is fixedly connected to one side of the threaded ring (28). A round hole (201) is opened on the threaded ring (28). An auxiliary mechanism (3) is provided inside the fixing block (21).

2. The filter rapid switching mechanism for a multispectral imager according to claim 1, characterized in that: The fixed block (21) is fixedly connected to the imager body (1), the limiting rod (22) is fixedly connected to the fixed block (21), and the two ends of the spring (24) are fixedly connected to the outer surface of the slider (23) and the inner wall of the fixed block (21), respectively.

3. The filter rapid switching mechanism for a multispectral imager according to claim 1, characterized in that: The auxiliary mechanism (3) includes a pressing block (31), which is fixedly connected to the connecting rod (25). An angled block (32) is sleeved inside the fixed block (21), and the angled block (32) is slidably connected to the fixed block (21).

4. The filter rapid switching mechanism for a multispectral imager according to claim 3, characterized in that: One end of the beveled block (32) is fixedly connected to a pull rod (33), which is sleeved inside the fixed block (21) and is slidably connected to the fixed block (21).

5. The filter rapid switching mechanism for a multispectral imager according to claim 4, characterized in that: A limiting ring (34) is sleeved on the outer surface of the pull rod (33), and the limiting ring (34) is fixedly connected to the pull rod (33).

6. The filter rapid switching mechanism for a multispectral imager according to claim 5, characterized in that: A spring 2 (35) is sleeved on the outer surface of the pull rod (33), and a pull block (36) is fixedly connected to one end of the pull rod (33).

7. The filter rapid switching mechanism for a multispectral imager according to claim 6, characterized in that: The two ends of the second spring (35) are respectively fixedly connected to the outer surface of the limiting ring (34) and the inner wall of the fixing block (21).

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