Filter adjustment mechanism and scientific camera

Abstract

The utility model provides a kind of filter adjusting mechanism and scientific camera, including front cover assembly;Filter, filter is set in the inside of front cover assembly;Filter adjusting module, filter adjusting module is set in the inside of front cover assembly, and is set in the periphery of filter, filter adjusting module is used to fine tune the position of filter;Rear cover plate, rear cover plate is connected with front cover assembly, the side of rear cover plate close to filter is provided with CMOS sensor, and CMOS sensor is used to receive the spectral information after being filtered by filter.The utility model is through setting filter adjusting module, fine tunes the X axis and Y axis of filter, so that scientific camera is dynamically, accurately adjusted to the best working position according to different lens optical characteristics and specific filtering demand.Effective transmission or blocking of target waveband light is ensured, thereby effectively improving the filtering effect of filter and the image acquisition accuracy of scientific camera.

Description

Technical Field

[0001] This utility model relates to the field of filter adjustment technology, and in particular to a filter adjustment mechanism and a scientific camera. Background Technology

[0002] Currently, high-tech industries such as scientific research, astronomy, medicine, and materials science all use specialized scientific cameras to acquire images. In existing technology, the main structure of a scientific camera is similar to that of a regular camera, typically using a bayonet-style threaded mount to connect and fix the lens to the camera body. However, for high-precision image acquisition with scientific cameras, a specially shaped filter needs to be added between the CMOS sensor and the lens to filter the image. However, existing scientific cameras cannot effectively adjust the position of the filter, thus affecting the filtering effect and the image acquisition accuracy of the scientific camera. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a filter adjustment mechanism and a scientific camera. Through the filter adjustment module, precise position adjustment of the filter's X, Y, and Z axes is achieved, ensuring that the light filtered by the filter accurately enters the CMOS sensor, thus enabling high-precision image acquisition by the scientific camera.

[0004] In a first aspect, embodiments of the present invention provide a filter adjustment mechanism, comprising: Front cover assembly; A filter is disposed inside the front cover assembly; A filter adjustment module is located inside the front cover assembly. The filter adjustment module includes a filter sleeve and an adjustment pair. The filter is placed inside the filter sleeve, which is rectangular. A first through hole is provided in the middle of the first side of the filter sleeve, a second through hole is provided in the middle of the second side of the filter sleeve, third through holes are provided on both sides of the middle of the third side of the filter sleeve, and fourth through holes are provided on both sides of the middle of the fourth side of the filter sleeve. One end of the adjustment pair abuts against the filter sleeve, and the other end of the adjustment pair is located inside the front cover assembly. The first side is adjacent to the second side. The rear cover is connected to the front cover assembly. A CMOS sensor is located on the side of the rear cover near the filter. The CMOS sensor is used to receive spectral information filtered by the filter.

[0005] In some embodiments of this utility model, the filter sleeve is provided with a first protrusion, which abuts against the filter.

[0006] In some embodiments of this utility model, the front cover assembly is provided with a fifth through hole, a sixth through hole, a seventh through hole, and an eighth through hole that are aligned with the positions of the first through hole, the second through hole, the third through hole, and the fourth through hole. Each of the fifth through hole, the sixth through hole, the seventh through hole, and the eighth through hole is provided with a first extension and a second extension. A first opening is formed between the first extension and the second extension. The first extension, the second extension, and the first opening form a limiting mechanism for the adjusting pair. The limiting mechanism is used to limit the adjusting pair.

[0007] In some embodiments of this utility model, multiple adjustment pairs are provided with fine threaded pairs and spring pins. One end of the fine threaded pair is connected to the spring pin, and the other end of the fine threaded pair is connected to the filter sleeve.

[0008] In some embodiments of this utility model, the dustproof rubber component is further provided with a dustproof glass sheet.

[0009] In some embodiments of this utility model, a second protrusion is provided on the side of the front cover assembly away from the filter sleeve, and a lens mount thread is provided on the inner side of the second protrusion, which is used to fix the lens.

[0010] Secondly, this utility model embodiment also provides a scientific camera, including: The filter adjustment mechanism as described in the first aspect embodiment above.

[0011] The filter adjustment mechanism according to the embodiment of this utility model has at least the following beneficial effects: This invention incorporates a filter adjustment module to fine-tune the X, Y, and Z axes of the filter. This allows the scientific camera to dynamically and precisely adjust the filter to its optimal working position based on different lens optical characteristics and specific filtering requirements. This ensures the effective passage or blocking of light in the target wavelength band, thereby significantly improving the filter's filtering effect and the image acquisition accuracy of the scientific camera. Attached Figure Description

[0012] Figure 1 This is an exploded view of the filter adjustment mechanism; Figure 2 This is a structural diagram of the dustproof rubber component; Figure 3 This is a schematic diagram of the regulating pair; Figure 4 This is a schematic diagram of the structure of the second protrusion and the lens mount thread.

[0013] The reference numerals in the figures include: Front cover assembly 100, second protrusion 110, lens mount thread 111, fifth through hole 120, sixth through hole 130, seventh through hole 140, eighth through hole 150, filter 200, filter adjustment module 300, filter sleeve 310, first protrusion 311, dustproof rubber part 320, first through hole 321, second through hole 322, third through hole 323, fourth through hole 324, adjustment pair 330, fine thread pair 331, spring pin 332, first extension 340, second extension 350, rear cover plate 400, CMOS sensor 410. Detailed Implementation

[0014] 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 application, and should not be construed as limiting this application. The step numbers in the following embodiments are set only for ease of explanation, and there is no limitation on the order between the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0015] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0016] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0017] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Firstly, referring to Figure 1 This utility model embodiment provides a filter adjustment mechanism, including a front cover assembly 100; a filter 200 disposed inside the front cover assembly 100; and a filter adjustment module 300 disposed inside the front cover assembly 100. The filter adjustment module 300 includes a filter sleeve 310 and an adjustment pair 330. The filter 200 is disposed inside the filter sleeve 310, which is rectangular. A first through hole 321 is provided in the middle of the first side of the filter sleeve 310, and a second through hole 322 is provided in the middle of the second side of the filter sleeve 310. The filter sleeve 310 has a third through hole 323 on both sides of the middle of the third side and a fourth through hole 324 on both sides of the middle of the fourth side. One end of the adjusting pair 330 abuts against the filter sleeve 310 and the other end of the adjusting pair 330 is located inside the front cover assembly 110. The first side is adjacent to the second side. The rear cover plate 400 is connected to the front cover assembly 100. A CMOS sensor 410 is provided on the side of the rear cover plate 400 near the filter 200. The CMOS sensor 410 is used to receive the spectral information filtered by the filter 200.

[0020] It should be noted that the front cover assembly 100 is the main frame and shell of the entire filter 200 adjustment mechanism. The front cover assembly 100 is used to fix, support, and position the filter 200 and the filter adjustment module 300. The filter 200 is used to filter out unwanted spectral components or interfering light in the incident light, reduce interference components in the image acquisition process, and improve the contrast between the imaging target and the background. The filter adjustment module 300 is used to adjust the angle and position of the filter 200, thereby improving the filtering effect of the filter 200 and the image acquisition accuracy of the scientific camera. The rear cover plate 400 is used to form a sealed space with the front cover assembly 100 to finally position and fix the filter 200 and the filter adjustment module 300.

[0021] For example, when the scientific camera acquires images, the incident light first enters the front cover assembly 100 and is filtered by the filter 200 to remove unwanted spectral components and interfering light. When the imaging requirements of the scientific camera are high, the filter adjustment module 300 adjusts the angle and position of the filter 200 so that the spectral information filtered by the filter 200 can accurately enter the CMOS sensor 410, ultimately achieving high-precision image acquisition.

[0022] Reference Figure 1The filter sleeve 310 is provided with a first protrusion 311, which abuts against the filter 200.

[0023] It should be noted that the first protrusion 311 of the filter sleeve 310 abuts against the filter 200, preventing the filter 200 from directly contacting other components such as the front cover assembly 100. This reduces the possibility of edge wear or deformation of the filter 200 and ensures that the filter 200 is always within the preset reference plane, providing a stable adjustment reference for subsequent position adjustments. Furthermore, since the dustproof rubber part 320 is sleeved around the periphery of the filter sleeve 310, adjusting the position of the filter 200 only requires adjusting the position of the filter sleeve 310 through the adjusting pair 330. This avoids direct connection between the adjusting pair 330 and the filter 200, preventing damage to the filter 200 due to improper operation by the operator.

[0024] Furthermore, both the CMOS sensor 410 and the filter 200 in the scientific camera are highly sensitive to dust. Tiny dust particles can create dark spots and light spots during imaging, severely affecting the image quality of the scientific camera. Therefore, this embodiment uses a dustproof rubber component 320 to cover the periphery of the filter sleeve 310 and fill the assembly gap between the filter sleeve 310 and the front cover assembly 100 and the rear cover plate 400. This prevents dust and moisture from the external environment from entering the core optical path between the filter 200 and the CMOS sensor 410 through the gap. In addition, the elasticity of the dustproof rubber component 320 effectively accommodates the displacement of the filter 200 during fine-tuning by the adjustment pair 330, ensuring that the optical path between the filter 200 and the CMOS sensor 410 remains clean.

[0025] Reference Figure 2 The adjustment pair 330 passing through the first through hole 321 and the adjustment pair 330 passing through the third through hole 323 are used to adjust the filter sleeve 310 to move left and right along the X-axis. The adjustment pair 330 passing through the second through hole 322 and the adjustment pair passing through the third through hole 323 are used to adjust the filter sleeve 310 to move up and down along the Y-axis. The adjustment pair 330 passing through the fourth through hole 324 is used to adjust the filter sleeve 310 to rotate along the Z-axis, so as to achieve fine adjustment of the filter 200.

[0026] It should be noted that the first through hole 321 is disposed on the first side of the dustproof rubber component 320, the second through hole 322 is disposed on the second side of the dustproof rubber component 320, the third through hole 323 is disposed on the third side of the dustproof rubber component 320, and the fourth through hole 324 is disposed on the fourth side of the dustproof rubber component 320. The first through hole 321 and the fourth through hole 324 are opposite to each other, and the second through hole 322 and the third through hole 323 are opposite to each other. In this embodiment, there is one first through hole 321 and one second through hole 322, and two third through holes 323 and two fourth through holes 324. The first through hole 321 is located in the middle of the first side of the dustproof rubber part 320, the second through hole 322 is located in the middle of the second side of the dustproof rubber part 320, the two third through holes 323 are respectively located on the upper and lower sides of the middle of the third side of the dustproof rubber part 320, and the two fourth through holes 324 are respectively located on the upper and lower sides of the middle of the fourth side of the dustproof rubber part 320.

[0027] It should be noted that the adjustment pair 330 passing through the first through hole 321 can directly act on the side of the filter sleeve 310 in the X-axis direction. When the filter sleeve 310 needs to move to the left along the X-axis of the filter 200, the adjustment pair 330, which is rotated in the first through hole 321, pushes the filter sleeve 310 to move to the left along the X-axis of the filter 200.

[0028] When the filter sleeve 310 needs to move to the right along the X-axis of the filter 200, the adjusting pair 330 provided in the first through hole 321 is rotated to the initial position, and the adjusting pair 330 provided in the first through hole 321 is rotated in the opposite direction so that the filter sleeve 310 moves to the right along the X-axis of the filter 200.

[0029] Furthermore, since the two third through holes 323 are respectively located on the upper and lower sides of the middle of the third side of the dustproof rubber part 320, the filter sleeve 320 can be rotated along the X-axis of the filter by adjusting the adjusting pair located in the two third through holes 323, with the adjusting pair 330 located in the second through hole 322 as the fulcrum, thereby completing the fine adjustment of the filter 200 in the X-axis direction.

[0030] When the filter sleeve 310 needs to move upward along the Y-axis of the filter 200, the adjusting pair 330, which is rotated in the second through hole 322, pushes the filter sleeve 310 upward along the Y-axis of the filter 200. When the filter sleeve 310 needs to move downward along the Y-axis of the filter 200, the adjusting pair 330, which is rotated in the second through hole 322, moves downward along the Y-axis of the filter 200.

[0031] Furthermore, since the two third through holes 323 are respectively located on the upper and lower sides of the middle of the fourth side of the dustproof rubber part 320, the adjustment pair 330 located in the two third through holes 323 can be adjusted to rotate the filter sleeve 320 along the Y-axis of the filter 200, with the adjustment pair 330 located in the second through hole 322 as the fulcrum, thereby completing the fine adjustment of the filter 200 in the Y-axis direction.

[0032] Since there are two fourth through holes 324 (located on the left and right sides of the middle of the fourth side of the dustproof rubber part 320, respectively, distributed along the X-axis), a torque around the Z-axis needs to be applied by asynchronous operation of these two adjusting pairs 330: If the filter sleeve 310 needs to rotate in the positive direction of the Z-axis (e.g., clockwise when viewed from the positive direction of the X-axis to the negative direction): the adjusting pair 330 on the left side of the fourth through hole 324 can be rotated in the positive direction (applying a thrust toward the filter sleeve 310), while the adjusting pair 330 on the right side of the fourth through hole 324 can be rotated in the reverse direction (reducing the thrust or generating a slight pulling force), so that the upper side of the filter sleeve 310 is displaced in the Z-axis rotation direction and the lower side is displaced in the opposite direction, forming a rotational torque around the Z-axis; If the filter sleeve 310 needs to rotate in the opposite direction along the Z-axis, then the two adjusting pairs 330 of the fourth through hole 324 are operated in the opposite direction (the left side rotates in the forward direction and the right side rotates in the reverse direction), and the filter sleeve 310 is driven to rotate in the opposite direction around the Z-axis by the reverse torque.

[0033] Furthermore, the front cover assembly 100 is provided with a fifth through hole 120, a sixth through hole 130, a seventh through hole 140, and an eighth through hole 150 aligned with the positions of the first through hole 321, the second through hole 322, the third through hole 323, and the fourth through hole 324. Each of the fifth through hole 120, the sixth through hole 130, the seventh through hole 140, and the eighth through hole 150 is provided with a first extension 340 and a second extension 350. A first opening is formed between the first extension and the second extension. The first extension 340, the second extension 350, and the first opening form a limiting mechanism for the adjusting pair. The limiting mechanism is used to limit the adjusting pair.

[0034] It should be noted that the limiting mechanism can precisely constrain the movement range of the adjusting pair 330, preventing the filter sleeve 310 from shifting due to excessive rotation of the adjusting pair 330. This ensures that the filter sleeve 310 can be precisely positioned in the X and Y axes to meet the positional accuracy requirements between the filter 200 and the CMOS sensor 410.

[0035] In addition, the limiting mechanism can fix the position of the filter sleeve 310 after the adjustment pair 330 is adjusted, so as to avoid positional changes caused by external factors such as vibration and external force, and ensure the structural stability of the entire filter 200 adjustment mechanism.

[0036] Reference Figure 3 Each of the multiple adjustment pairs 330 is provided with a fine thread pair 331 and a spring pin 332. One end of the fine thread pair 331 is connected to the spring pin 332, and the other end of the fine thread pair 331 is connected to the filter sleeve 310.

[0037] It should be noted that, due to the small pitch of the fine-pitch thread pair 331, when the position of the filter sleeve is finely adjusted by rotating the fine-pitch thread pair 331, the high-precision position matching requirements between the filter 200 and the CMOS sensor 410 can be met. Furthermore, after the fine-pitch thread pair 331 completes the position adjustment of the filter sleeve 310, the elasticity of the spring pin 332 can keep the fine-pitch thread pair 331 in the predetermined position, reducing the risk of the fine-pitch thread pair 331 rotating on its own due to external interference factors such as equipment vibration and external collisions, thus ensuring that the position of the filter 200 remains stable.

[0038] The dustproof rubber component 320 is also equipped with a dustproof glass sheet (not shown in the figure). It should be noted that the dustproof glass sheet can form a physical barrier between the filter 200, the CMOS sensor 410 and the external environment, directly blocking tiny impurities such as dust, fibers, and water vapor condensation in the air from entering the imaging optical path between the filter 200 and the CMOS sensor 410.

[0039] Reference Figure 4 The front cover assembly 100 has a second protrusion 110 on the side away from the filter sleeve 310. The inner side of the second protrusion 110 has a lens mount thread 111, which is used to fix the lens.

[0040] It should be noted that when the lens is screwed in, the lens can be installed along the preset axis under the guidance of the lens mount thread 111, avoiding lens misalignment during assembly. This ensures that the incident light can accurately pass through the effective area of ​​the filter 200 after passing through the lens, and then be vertically projected onto the CMOS sensor 410, eliminating imaging defects caused by optical path misalignment.

[0041] Secondly, this utility model embodiment also provides a scientific camera, including: The filter adjustment mechanism as described in the first aspect embodiment above.

[0042] It should also be noted that 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0044] In summary, the above description is merely a preferred embodiment of this specification and is not intended to limit the scope of protection of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A filter adjustment mechanism characterized by, include: Front cover assembly; A filter, wherein the filter is disposed inside the front cover assembly; A filter adjustment module is disposed inside the front cover assembly. The filter adjustment module includes a filter sleeve and an adjustment pair. The filter is disposed inside the filter sleeve, which is rectangular. A first through hole is provided in the middle of a first side of the filter sleeve, a second through hole is provided in the middle of a second side of the filter sleeve, third through holes are provided on both sides of the middle of a third side of the filter sleeve, and fourth through holes are provided on both sides of the middle of a fourth side of the filter sleeve. One end of the adjustment pair abuts against the filter sleeve, and the other end of the adjustment pair is disposed inside the front cover assembly. The first side and the second side are adjacent to each other. A rear cover plate is connected to the front cover assembly. A CMOS sensor is provided on the side of the rear cover plate near the filter. The CMOS sensor is used to receive spectral information filtered by the filter.

2. The filter adjustment mechanism of claim 1, wherein, The filter adjustment module is also provided with a dustproof rubber component, which is sleeved around the periphery of the filter sleeve. The filter sleeve is provided with a first protrusion, which abuts against the filter.

3. The filter adjustment mechanism of claim 1, wherein, The front cover assembly is provided with a fifth, sixth, seventh, and eighth through hole aligned with the positions of the first, second, third, and fourth through holes. Each of the fifth, sixth, seventh, and eighth through holes is provided with a first extension and a second extension. A first opening is formed between the first extension and the second extension. The first extension, the second extension, and the first opening form a limiting mechanism for the adjusting pair. The limiting mechanism is used to limit the adjusting pair.

4. The filter adjustment mechanism of claim 3, wherein, Each of the aforementioned adjustment pairs is provided with a fine-threaded pair and a spring pin. One end of the fine-threaded pair is connected to one end of the spring pin, and the other end of the fine-threaded pair abuts against the filter sleeve.

5. The filter adjustment mechanism of claim 2, wherein, The dustproof rubber component is also equipped with a dustproof glass sheet.

6. The filter adjustment mechanism of claim 1, wherein, The front cover assembly has a second protrusion on the side away from the filter sleeve, and a lens mount thread is provided on the inner side of the second protrusion for fixing the lens.

7. A scientific camera characterized by, include: The filter adjustment mechanism as described in any one of claims 1 to 6.

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