Optical adjustment device and imaging system

Abstract

The utility model provides an optical adjustment device and an imaging system, and relates to the field of optical adjustment. The optical adjusting device comprises a filter switching layer, an imaging mode switching layer, a second shell and a first shell, wherein the filter switching layer is provided with at least two different types of filters and a first driving part; the imaging mode switching layer is provided with a transparent window and a second driving part; the second shell and the first shell are both provided with light transmitting windows on the same optical path; the filter switching layer and the imaging mode switching layer are arranged between the second shell and the first shell. The optical adjusting device provided by the utility model is a double-layer device with a filter switching layer and an imaging mode switching layer, the optical adjusting device can realize the functions of filter switching and automatic dark field shooting at the same time under the condition of effectively controlling the volume through reasonable utilization of the space, and the flexibility and performance of an imaging system are improved.

Description

Technical Field

[0001] This application relates to the field of optical adjustment, and more specifically, to an optical adjustment device and an imaging system. Background Technology

[0002] In modern imaging technology, optical adjustment devices are key components that significantly impact image quality and application scenarios. Traditional optical adjustment systems typically rely on single-layer filter switching mechanisms, which are increasingly unable to meet the diverse needs of complex imaging.

[0003] With the development of image processing technology, especially in fields such as scientific research, medical imaging, and industrial inspection, the requirements for image quality are constantly increasing. Taking astrophotography as an example, dark-field calibration is extremely important. Dark-field calibration can effectively improve the signal-to-noise ratio, reduce background noise, and make the details of faint celestial objects clearer. In addition, it can eliminate fixed noise, improve image quality, and ensure the accurate capture of celestial features.

[0004] However, current dark field shooting solutions often require additional equipment and human intervention, increasing operational complexity and cost. Utility Model Content

[0005] In view of the above problems, the purpose of this application is to provide an optical adjustment device and an imaging system. The optical adjustment device, by combining a filter switching layer and an imaging mode switching layer, can not only realize the switching of different filters, but also realize the switching between imaging modes, namely dark field mode and normal imaging mode. Applying the optical adjustment device provided in this application to an imaging system can integrate multiple functions without significantly increasing the size, so as to meet the diverse needs of modern imaging technology.

[0006] In a first aspect, embodiments of this application provide an optical adjustment device, comprising: a filter switching layer having at least two different types of filters and a first driving member; an imaging mode switching layer having a transparent window and a second driving member; a first housing and a second housing; both the first housing and the second housing have a light-transmitting window on the same optical path; the filter switching layer and the imaging mode switching layer are disposed between the first housing and the second housing; the first driving member is configured to drive the different types of filters in the filter switching layer to move to the optical path where the light-transmitting window is located; and the second driving member is configured to drive the transparent window in the imaging mode switching layer to move to the optical path where the light-transmitting window is located.

[0007] In the above implementation process, the optical adjustment device provided by this application, by combining the filter switching layer and the imaging mode switching layer, can not only realize the switching of different filters, but also realize the switching between imaging modes, namely dark field mode and normal imaging mode. Applying the optical adjustment device provided by the embodiments of this application to the imaging system can integrate multiple functions without significantly increasing the volume, so as to meet the diverse needs of modern imaging technology.

[0008] Optionally, in this embodiment, the filter switching layer further includes a filter holder and a first connecting rod; the filter includes a first filter and a second filter; the first filter and the second filter are disposed on the filter holder; the filter holder is connected to the first driving member through the first connecting rod and configured to move along a preset path under the drive of the first driving member to switch the first filter and the second filter.

[0009] In the above implementation process, the filter switching layer of this application embodiment achieves efficient and precise filter switching through the close cooperation of the filter holder, the first connecting rod, and the driving component. Users can quickly adjust the filter according to their needs, improving image quality and adaptability, and greatly enhancing the user experience through a simple structure.

[0010] Optionally, in this embodiment, the filter holder includes a first connecting portion; a first connecting rod connects the first connecting portion and the first driving member, and is configured to drive the filter holder to move along the first connecting rod under the drive of the first driving member.

[0011] In the above implementation process, the optical adjustment device provided in this application embodiment is connected to the first driving component via a first connecting rod. The first connecting part of the filter holder is connected to the first connecting rod, ensuring that it can be stably connected and moved. Therefore, it can be seen that the optical adjustment device in this application embodiment achieves efficient and stable filter switching through the tight combination of the filter holder, the first connecting rod, and the first driving component (e.g., a motor).

[0012] Optionally, in this embodiment, the filter holder further includes a first limiting hole; the first connecting rod includes a first connecting boss; the first connecting boss is engaged in the first limiting hole and configured to move along a preset path under the drive of the first driving member.

[0013] In the above implementation process, another structure of the optical adjustment device provided in this application embodiment is provided with a first connecting boss and a first limiting hole. The cooperation of the two ensures that the filter holder can move smoothly and quickly along a preset path, while avoiding potential risks caused by excessive displacement. This not only improves the efficiency and accuracy of filter switching, but also enhances the durability and reliability of the entire optical adjustment device.

[0014] Optionally, in this embodiment, the optical adjustment device further includes a third housing; the third housing is provided with a light-transmitting window on the same optical path as the light-transmitting windows of the first housing and the second housing; a filter switching layer is disposed between the second housing and the third housing, and an imaging mode switching layer is disposed between the third housing and the first housing; a first driving member is housed in the third housing, and a second driving member is housed in the first housing.

[0015] In the above implementation process, the first driving member and the second driving member of the optical adjustment device provided in this application embodiment are respectively disposed at both ends of the optical adjustment device in a first direction; the first driving member and the second driving member can also be disposed in a housing that can increase their stability, for example, the first driving member is housed in a third housing and the second driving member is housed in a first housing; space is effectively utilized, ensuring that the volume of the entire device does not increase significantly in any direction, while efficiently realizing the switching of filters or shooting modes. Thus, while ensuring the stability and flexibility of the overall structure, it can also adapt to a variety of usage environments.

[0016] Optionally, in this embodiment, the surface of the second housing that contacts the filter switching layer is provided with a locking groove, and the locking groove matches the movement trajectory of the first connecting boss; the locking groove is configured to guide the first connecting boss to slide within the locking groove when the first connecting boss moves along a preset path.

[0017] In the above implementation process, the design of the locking groove allows the first and second connecting bosses to slide precisely along a preset path during movement. This provides guidance during movement, reduces friction, minimizes errors, avoids misalignment due to vibration or external interference, and improves the accuracy of filter switching.

[0018] Optionally, in this embodiment, the imaging mode switching layer includes a second connecting rod and an imaging bracket; the second connecting rod connects the imaging bracket and a second driving member, and is configured to drive the imaging bracket to move under the drive of the second driving member, so as to switch the imaging mode.

[0019] Optionally, in this embodiment, the imaging bracket includes a second connecting portion; a second connecting rod connects the second connecting portion and the second driving member, and is configured to drive the imaging bracket to move along the second connecting rod under the drive of the second driving member.

[0020] Optionally, in this embodiment of the application, the imaging bracket further includes a second limiting hole, and the second connecting rod includes a second connecting boss; the second connecting boss is engaged in the limiting hole and configured to move along a preset path under the drive of the second driving member.

[0021] In the above implementation process, the optical adjustment device of this application embodiment, in the imaging mode switching layer, enables the system to efficiently switch between dark field and normal shooting modes through the cooperation of the second connecting rod and the imaging support. In dark field mode, the transparent window and the light-transmitting window of the imaging mode switching layer do not overlap, achieving a fully light-blocking state and ensuring high quality in dark field imaging. When switching to normal shooting mode, the transparent window aligns with the light-transmitting window, and different filter combinations with the filter switching layer achieve diverse shooting needs. Thus, users can flexibly select shooting modes and filters according to actual needs, effectively improving image quality and adaptability to application scenarios, and meeting the high image quality requirements of fields such as scientific research and astrophotography.

[0022] In a second aspect, this application provides an imaging system, which includes the optical adjustment device described in the first aspect of this application.

[0023] The imaging system provided in this application integrates the aforementioned optical adjustment device. The filter switching layer and imaging mode switching layer of the optical adjustment device provide flexible shooting options, allowing users to quickly switch filters and imaging modes according to different shooting needs. The imaging system with the optical adjustment device not only improves image quality and meets the needs of diverse application scenarios, but also simplifies the operation process and enhances the system's user-friendliness. The imaging system provided in this application is widely applicable to scientific research, medical imaging, astrophotography, and other fields, providing users with more powerful imaging capabilities and a better user experience.

[0024] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the optical adjustment device provided in the embodiments of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the first optical adjustment device provided in the embodiments of this application;

[0028] Figure 3 An exploded view of the structure of the second optical adjustment device provided in the embodiments of this application;

[0029] Figure 4A schematic diagram of the first state of the filter switching layer of the second optical adjustment device provided in the embodiments of this application;

[0030] Figure 5 This is a schematic diagram of the second state of the filter switching layer of the second type of optical adjustment device provided in the embodiments of this application;

[0031] Figure 6 A schematic diagram of the first state of the imaging mode switching layer of the second optical adjustment device provided in the embodiments of this application;

[0032] Figure 7 This is a schematic diagram of the second state of the imaging mode switching layer of the second type of optical adjustment device provided in the embodiments of this application;

[0033] Figure 8 This is a schematic diagram of the first state of the first type of optical adjustment device provided in the embodiments of this application;

[0034] Figure 9 This is a schematic diagram of the second state of the first type of optical adjustment device provided in the embodiments of this application;

[0035] Figure 10 This is a schematic diagram of the third state of the second type of optical adjustment device provided in the embodiments of this application;

[0036] Reference numerals: Optical adjustment device-1000; Filter switching layer-100; Filter-110; First filter-111; Second filter-112; First driving component-120; Filter holder-130; First connecting part-131; First limiting hole-132; First connecting rod-140; First connecting boss-141; Imaging mode switching layer-200; Transparent window-210; Second driving component-220; Second connecting rod-230; Second connecting boss-231; Imaging holder-240; Second connecting part-241; Second limiting hole-242; First housing-300; Second housing-400; Third housing-500; Light transmission window-H; Locking slot-S; First direction-X. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] 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.

[0040] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0042] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0043] Because different application scenarios and imaging requirements necessitate different methods of light processing, filters need to be adjusted and switched. Filter switching can adjust the wavelength and intensity of light according to specific shooting conditions and target characteristics, thereby improving image quality and enhancing contrast and detail. For example, in medical imaging, different types of filters can help highlight lesions, while in astrophotography, specific filters can be used to enhance the visibility of faint celestial objects or filter out light pollution.

[0044] The filter switching mechanism in existing imaging systems typically employs a single-layer filter design, using mechanical or electronic actuation to switch between different filters to meet specific imaging requirements.

[0045] However, single-layer filter switching has certain limitations when facing complex imaging needs. It cannot integrate multiple functions at the same time and is difficult to meet the diverse needs of modern imaging applications.

[0046] In astronomical observations, celestial objects are often very faint, and background and thermal noise can severely affect signal clarity. Dark-field calibration effectively reduces these background interferences, thereby improving the signal-to-noise ratio and allowing for clearer rendering of even faint celestial details. Furthermore, dark-field calibration eliminates static noise in images, ensuring accurate capture of celestial features and supporting more precise astronomical analysis and research. Dark-field calibration not only enhances the reliability of observational results but can also be combined with post-processing techniques to further optimize image quality.

[0047] Based on this, embodiments of this application provide an optical adjustment device 1000 for use in an imaging system. This optical adjustment device 1000 integrates automated dark-field imaging structures and functions while maintaining efficient filter 110 switching, thereby meeting the demands of high-quality imaging. The optical adjustment device 1000 provided by this application not only enhances the flexibility of the imaging system but also effectively simplifies the operation process, providing users with a more convenient user experience.

[0048] Please see Figure 1 , Figure 1 This is a schematic diagram of an optical adjustment device provided in an embodiment of this application. This application provides an optical adjustment device 1000, which includes a filter switching layer 100 having at least two different types of filters 110 and a first driving member 120, an imaging mode switching layer 200 having a transparent window 210 and a second driving member 220, a first housing 300, and a second housing 400. Both the first housing 300 and the second housing 400 have a light-transmitting window H on the same optical path. The filter switching layer 100 and the imaging mode switching layer 200 are disposed between the first housing 300 and the second housing 400.

[0049] In the above implementation process, the optical adjustment device 1000 provided in this application mainly consists of a filter switching layer 100, an imaging mode switching layer 200, a first housing 300, and a second housing 400. The filter switching layer 100 and the imaging mode switching layer 200 are housed within the first housing 300 and the second housing 400. The various components of the optical adjustment device 1000 can be connected through the light-transmitting window H to ensure that light can pass smoothly through the optical path.

[0050] The filter switching layer 100 includes at least two different types of filters 110 and a first driving member 120. The first driving member 120 is configured to drive the different types of filters 110 in the filter switching layer 100 to move to the optical path where the light-transmitting window H is located, allowing the selection of a suitable filter 110 according to specific imaging requirements. The filters 110 may include infrared / ultraviolet cut-off filters 110, light pollution filters 110, conventional color filters 110, reflective filters 110, etc. In some embodiments, the different types of filters 100 may also be composed of one or more of the aforementioned filters, along with a transparent portion, and can be designed according to requirements in practical applications.

[0051] The imaging mode switching layer 200 enables switching between different imaging modes. The movement of the transparent window 210 is controlled by the second driving element 220. Under different imaging requirements, the second driving element 220 drives the transparent window 210 or the opaque area in the imaging mode switching layer 200 to the optical path where the light-transmitting window H is located. When the transparent window 210 moves to the optical path where the light-transmitting window H is located, the normal shooting mode can be realized; when the opaque area of ​​the imaging mode switching layer 200 moves to the optical path where the light-transmitting window H is located, the dark field imaging mode can be realized, thus enabling switching between the normal shooting mode and the dark field imaging mode.

[0052] It should be noted that in the embodiments of this application, the light-transmitting window H can be an empty window, and the empty window design can reduce light loss. Alternatively, a completely light-transmitting material (such as optical glass or transparent plastic) can be used as the light-transmitting window H, which can effectively protect the internal components and provide better optical performance.

[0053] In the above implementation process, both the first housing 300 and the second housing 400 are provided with a light-transmitting window H on the same optical path, and different types of filters 110 can be moved to positions that form an optical path with the light-transmitting window H. The transparent window 210 or opaque area in the imaging mode switching layer 200 can also be moved to the optical path where the light-transmitting window H is located. Wherein, if one filter forms an optical path with another, or with several others, it is because there is a structural overlap with the light-transmitting window H. For example, when one of the filters 110 is moved to a position that forms an optical path with the light-transmitting window H, the filter 110 partially or completely overlaps with the light-transmitting window H.

[0054] pass Figure 1As can be seen, the optical adjustment device 1000 provided in this application, by combining the filter switching layer 100 and the imaging mode switching layer 200, can not only realize the switching of different filters 110, but also realize the switching between imaging modes, namely dark field mode and normal imaging mode. Applying the optical adjustment device 1000 provided in this application embodiment to an imaging system can integrate multiple functions without significantly increasing the volume, so as to meet the diverse needs of modern imaging technology.

[0055] Please continue reading. Figure 1 In an optional embodiment, the filter switching layer 100 provided in this application embodiment is described with two different filters 110. The filter switching layer 100 provided in this application embodiment also includes a filter holder 130 and a first connecting rod 140. The filter 110 includes a first filter 111 and a second filter 112. The first filter 111 and the second filter 112 are disposed on the filter holder 130.

[0056] The filter holder 130 is connected to the first drive member 120 via the first connecting rod 140 and is configured to move along a preset path under the drive of the first drive member 120 to switch between the first filter 111 and the second filter 112. In other words, the first connecting rod 140 connects the filter holder 130 to the first drive member 120 and is responsible for transmitting the drive signal. Through the connection of the first connecting rod 140, the filter holder 130 can move along the preset path, driving either the first filter 111 or the second filter 112 to the optical path where the light-transmitting window H is located, thus achieving rapid switching between different filters 110.

[0057] In this embodiment, the first filter 111 can be configured as an infrared and ultraviolet cut-off filter 110, and the second filter 112 can be configured as a light pollution filter 110.

[0058] The infrared-ultraviolet cutoff filter 110 is used to block ultraviolet light with wavelengths below 700nm and infrared light with wavelengths above 700nm, allowing only visible light to pass through. In astrophotography and scientific research, it can eliminate unwanted spectral interference, ensuring that the image contains only the desired visible light signal, and helps protect the sensor from the effects of ultraviolet and infrared light.

[0059] The dual narrowband light pollution filter 110 is designed to filter out specific wavelengths of light pollution, typically targeting the spectra of sodium and mercury lamps commonly found in urban environments. The dual narrowband light pollution filter 110 precisely allows the spectrum of specific celestial objects to pass through while effectively suppressing interference from light pollution sources, thereby improving the image quality of astrophotography. By using the dual narrowband light pollution filter 110, photographers can capture stars and other astronomical phenomena more clearly, enhancing the detail and color reproduction of night sky images.

[0060] Of course, the first filter 111 and the second filter 112 in the embodiments of this application can also be set as other types of filters 110; or three or more types of filters 110 can be set in the filter switching layer 100 by adjusting the structure of the device.

[0061] It should be noted that the preset path refers to the designed route along which the filter holder 130 moves within the filter switching layer 100. Through the preset path, the first filter 111 and the second filter 112 can quickly switch onto the optical path to adapt to different imaging requirements. In practical applications, the design of the preset path needs to consider the smooth and rapid movement of the filter 110 during switching, reducing mechanical friction and unnecessary vibration. Therefore, the preset path can be linear or curved, depending on the position of the first driving component 120.

[0062] In addition, the first driving component 120 and the second driving component 220 in the embodiments of this application can be driven by pneumatic drive, hydraulic drive, stepper motor, servo motor, linear driver and magnetic actuator, etc. In the embodiments of this application, only a motor is used as an example, and the selection of driving component shall not be a limitation on the scope of protection of this application.

[0063] Therefore, the filter switching layer 100 of this embodiment achieves efficient and precise filter switching 110 through the close cooperation of the filter holder 130, the first connecting rod 140, and the driving component. Users can quickly adjust the filter 110 according to their needs, improving image quality and adaptability, and greatly enhancing the user experience through a simple structure.

[0064] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a first optical adjustment device provided in an embodiment of this application; in an optional embodiment of this application, the filter holder 130 includes a first connecting portion 131.

[0065] The first connecting rod 140 connects the first connecting part 131 and the first driving member 120, and is configured to drive the filter holder 130 to move along the first connecting rod 140 under the drive of the first driving member 120.

[0066] like Figure 2 As shown, the first driving component 120 is a motor, which is sleeved and fixed on the first connecting rod 140. The first connecting part 131 is a connecting ear protruding from the first end in the second direction and the second end in the second direction of the filter holder 130. It is connected to the first connecting rod 140 through the connecting ear, so that the motor can drive the entire filter holder 130 to move along the first connecting rod 140.

[0067] exist Figure 2In the second direction, a second first connecting rod 140 is also provided at the second end. This second first connecting rod 140 connects to the connecting ear protruding from the second end of the second direction, thus providing support for the movement of the filter holder 130 on both parallel lines (two opposite sides of the filter holder 130). The parallel layout enhances the stability of the holder, making it more balanced during movement and helping to improve the accuracy of switching. Optionally, a spring can be provided between the electrode and the connecting ear; this can provide additional cushioning, reduce mechanical friction and vibration, and improve the overall reliability and service life of the device.

[0068] pass Figure 2 As can be seen, the optical adjustment device 1000 provided in this application embodiment is connected to the first driving member 120 via the first connecting rod 140. The first connecting portion 131 of the filter holder 130 is connected to the first connecting rod 140 to ensure that it can be stably connected and moved. Thus, it can be seen that the optical adjustment device 1000 in this application embodiment achieves efficient and stable filter 110 switching through the tight combination of the filter holder 130, the first connecting rod 140 and the first driving member 120 (e.g., a motor).

[0069] Please see Figure 3 , Figure 4 and Figure 5 , Figure 3 An exploded view of the structure of the second optical adjustment device provided in the embodiments of this application; Figure 4 A schematic diagram of the first state of the filter switching layer of the second optical adjustment device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the second state of the filter switching layer 100 of the second type of optical adjustment device 1000 provided in the embodiments of this application.

[0070] In an optional embodiment, if Figure 4 and Figure 5 As shown, the filter holder 130 also includes a first limiting hole 132; the first connecting rod 140 includes a first connecting boss 141. The first connecting boss 141 is engaged in the first limiting hole 132 and configured to move along a preset path under the drive of the first driving member 120.

[0071] Figure 3 An exploded view of another structure of the optical adjustment device 1000 provided in this application, as shown below. Figure 3 As shown, the first connecting boss 141 of the first connecting rod 140 is connected to the first limiting hole 132. The first limiting hole 132 has a certain length in the second direction, so that the first connecting boss 141 can be displaced therein, so that the filter holder 130 can be displaced in the first direction according to a preset path.

[0072] like Figure 4The area corresponding to the light-transmitting window H of the second housing 400 shown does not contain any filter 110. When the first driving member 120 drives the first connecting rod 140, the first connecting rod 140 moves in the plane. When the first connecting boss 141 moves to the middle position of the first limiting hole 132, the first filter 111 is directly facing the light-transmitting window H, and at this time, shooting based on the first filter 111 can be achieved. If the first driving member 120 continues to drive the first connecting rod 140 to move in the plane, it will cause the filter 110 frame to continue moving towards the first end in the first direction until the second filter 112 is directly facing the light-transmitting window H. Figure 5 In the middle state), the first connecting boss 141 has moved to the first end of the first limiting hole 132 in the second direction and can no longer move to the second end in the second direction within the first limiting hole 132. At this time, it is possible to achieve shooting based on the second filter 112.

[0073] Therefore, another structure of the optical adjustment device 1000 provided in this application embodiment is provided with a first connecting boss 141 and a first limiting hole 132. The cooperation between the two ensures that the filter holder 130 can move smoothly on a preset path, while avoiding potential risks caused by excessive displacement. This not only improves the efficiency and accuracy of filter 110 switching, but also enhances the durability and reliability of the entire optical adjustment device 1000.

[0074] Please continue reading. Figure 3 In the embodiments of this application, the first driving member 120 and the second driving member 220 of the optical adjustment device are respectively disposed at both ends of the optical adjustment device 1000 in the first direction X; in an optional embodiment, the optical adjustment device 1000 further includes a third housing 500. The third housing 500 is provided with a light-transmitting window H on the same optical path as the light-transmitting window H of the first housing 300 and the second housing 400.

[0075] A filter switching layer 100 is disposed between the second housing 400 and the third housing 500, and an imaging mode switching layer 200 is disposed between the third housing 500 and the first housing 300. A first driving member 120 is housed in the third housing 500, and a second driving member 220 is housed in the first housing 300.

[0076] like Figure 3 As shown, the second optical adjustment device 1000 provided in this application embodiment has three housings, namely a first housing 300, a second housing 400 and a third housing 500. Each of the three housings has a light-transmitting window H on the same optical path to ensure that light can pass through each layer without obstruction, thereby ensuring the operation of the imaging system.

[0077] The first driving member 120 is housed within the third housing 500, and the second driving member 220 is housed within the first housing 300; it is worth noting that the first driving member 120 protrudes from the plane of the filter 110, and the second driving member 220 protrudes from the plane of the transparent window 210; as Figure 3 As shown, in this embodiment, the driving components of the filter switching layer 100 and the imaging mode switching layer 200 are respectively disposed at the first end and the second end of the optical adjustment device 1000 in the first direction; correspondingly, the third housing 500 is provided with a first driving component 120 accommodating space at the first end of the first direction, and the first housing 300 is provided with a second driving component 220 accommodating space at the second end of the first direction. Therefore, the overall volume of the optical adjustment device 1000 does not increase significantly regardless of the direction.

[0078] It should be noted that the first direction in the embodiments of this application is usually perpendicular to the optical path, but there are also some special application scenarios in which the first direction has a certain angle with the optical path.

[0079] pass Figure 3 As can be seen, the first driving member 120 and the second driving member 220 of the optical adjustment device 1000 provided in this application embodiment are respectively disposed at both ends of the optical adjustment device 1000 in a first direction; the first driving member and the second driving member can also be disposed in a housing that can increase its stability, for example, the first driving member is housed in a third housing and the second driving member is housed in a first housing; this effectively utilizes space, ensuring that the volume of the entire device does not increase significantly in any direction, while efficiently realizing the switching of filters or shooting modes. Thus, while ensuring the stability and flexibility of the overall structure, it can also adapt to a variety of usage environments.

[0080] Please continue reading. Figure 3 The second housing 400 has a locking groove S on the surface that contacts the filter switching layer 100. The locking groove S matches the movement trajectory of the first connecting boss 141. The locking groove S is configured to guide the first connecting boss 141 to slide within the locking groove S when the first connecting boss 141 moves along a preset path.

[0081] Similarly, the surface of the third housing 500 that contacts the imaging mode switching layer 200 is also provided with a locking groove S. The locking groove S matches the movement trajectory of the second connecting boss 231 of the second connecting rod 230 of the imaging mode switching layer 200. When the second connecting boss 231 moves along the preset path, it guides the second connecting boss 231 to slide in the locking groove S.

[0082] Therefore, the design of the slot S allows the first connecting boss 141 and the second connecting boss 231 to slide precisely along a preset path during movement. This provides guidance during movement, reduces friction, minimizes errors, avoids misalignment due to vibration or external interference, and improves the accuracy of filter 110 switching.

[0083] Please see Figure 6 and Figure 7 ,as well as Figure 8 , Figure 9 and Figure 10 , Figure 6 A schematic diagram of the first state of the imaging mode switching layer of the second optical adjustment device provided in the embodiments of this application; Figure 7 This is a schematic diagram of the second state of the imaging mode switching layer of the second type of optical adjustment device provided in the embodiments of this application; Figure 8 This is a schematic diagram of the first state of the first type of optical adjustment device provided in the embodiments of this application; Figure 9 This is a schematic diagram of the second state of the first type of optical adjustment device provided in the embodiments of this application; Figure 10 This is a schematic diagram of the third state of the second type of optical adjustment device provided in the embodiments of this application. In an optional embodiment, the imaging mode switching layer 200 of the optical adjustment device 1000 provided in the embodiments of this application includes a second connecting rod 230 and an imaging support 240.

[0084] The imaging support includes a second connecting part 241; a second connecting rod 230 connects the second connecting part 241 and the second driving member 220, and is configured to drive the imaging support to move along the second connecting rod 230 under the drive of the second driving member 220.

[0085] The second connecting rod 230 connects the imaging bracket 240 and the second driving member 220, and is configured to drive the imaging bracket 240 to move under the drive of the second driving member 220, so as to switch the imaging mode.

[0086] The imaging support also includes a second limiting hole 242, and the second connecting rod 230 includes a second connecting boss 231; the second connecting boss 231 is engaged in the limiting hole and configured to move along a preset path under the drive of the second driving member 220.

[0087] Please see Figure 6 and Figure 7 Similar to the filter switching layer 100, the second connecting rod 230 of the imaging mode layer connects to the imaging support 240 and the second drive element 220. Figure 6 This is the first state of imaging mode switching layer 200, namely dark field imaging mode. Figure 6The transparent window 210 of the imaging mode switching layer 200 does not overlap with the light-transmitting window H of the third housing 500. At this time, it is in a fully opaque state. Regardless of the state of the filter switching layer 100, it is in dark field imaging mode.

[0088] The second driving component 220 drives the second connecting rod 230 to move, moving the imaging bracket from the second end in the first direction to the first end in the first direction, until the transparent window 210 is directly facing the light-transmitting window H. Figure 7 In the middle state), the second connecting boss 231 has moved to the first end of the second direction of the second limiting hole 242 and can no longer move to the second end of the second direction within the second limiting hole 242. At this time, it is the normal shooting mode. With the different filters 110 of the filter switching layer 100, different shooting can be achieved.

[0089] In the structure of the first optical adjustment device 1000 proposed in this application, in Figure 8 The image shows the shooting mode switching layer in dark field mode. Regardless of the state of filter switching layer 100, it is always in dark field imaging mode.

[0090] The first drive unit 120 and the second drive unit 220 drive the filter 110 frame and the imaging support 240 to move. (Continue reading...) Figure 9 The filter switching layer 100 switches to the second filter 112, which coincides with the center of the light-transmitting window H; the shooting mode switching layer switches to the transparent window 210, which coincides with the center of the light-transmitting window H, and the shooting function of the second filter 112 is enabled.

[0091] The first drive unit 120 and the second drive unit 220 continue to drive the filter 110 frame and the imaging support 240 to move. (See attached image) Figure 10 The filter switching layer 100 switches to the first filter 111, which coincides with the light-transmitting window H; the shooting mode switching layer switches to the transparent window 210, which coincides with the center of the light-transmitting window H, to realize the shooting function of the first filter 111.

[0092] pass Figures 6 to 10 As can be seen, in the optical adjustment device 1000 of this application embodiment, the cooperation between the second connecting rod 230 and the imaging support 240 in the imaging mode switching layer 200 enables the system to efficiently switch between dark field and normal shooting modes. In dark field mode, the transparent window 210 of the imaging mode switching layer 200 does not coincide with the light-transmitting window H, achieving a fully light-blocking state and ensuring high-quality dark field imaging. When switching to normal shooting mode, the transparent window 210 aligns with the light-transmitting window H and combines with different filters 110 of the filter switching layer 100 to meet diverse shooting needs. Thus, users can flexibly select shooting modes and filters 110 according to actual needs, effectively improving image quality and adaptability to application scenarios, and meeting the high image quality requirements of fields such as scientific research and astrophotography.

[0093] In an optional embodiment, a dustproof glass can be provided in the light-transmitting window H of the first housing, thereby effectively preventing dust and other particulate matter from entering the interior while maintaining good light transmittance. This not only protects internal components and extends the service life of the equipment, but also ensures the stability and reliability of the equipment under various environmental conditions.

[0094] This application also provides an imaging system that includes the aforementioned optical adjustment device.

[0095] In other words, the imaging system provided in this application integrates the aforementioned optical adjustment device. The filter switching layer and imaging mode switching layer of the optical adjustment device provide flexible shooting options for the imaging system, allowing users to quickly switch filters and imaging modes according to different shooting needs. The imaging system with the optical adjustment device not only improves image quality and meets the needs of diverse application scenarios, but also simplifies the operation process and enhances the system's user-friendliness. The imaging system provided in this application is widely applicable to scientific research, medical imaging, astrophotography, and other fields, providing users with more powerful imaging capabilities and a better user experience.

[0096] This application also provides a method for automatic filter switching and dark field calibration of an imaging system based on an optical adjustment device, the specific steps of which are as follows:

[0097] Step S1: Initial setup.

[0098] The exposure time T0 can be set manually by the user or determined automatically by the front-end controller.

[0099] Step S2: Capture a dark scene image.

[0100] Receive pre-shooting instructions, including exposure time T0; temperature sensor tests ambient temperature t0 during shooting.

[0101] Determine the state of the shooting mode switching layer. If it is in the light-blocking state, capture a dark field image P0; if it is in the light-transmitting state, the second driving element drives the shooting mode switching layer to the light-blocking state and captures P0.

[0102] Further, check if the dark field switching is successful: Calculate the dark field threshold based on the exposure time T0 and ambient temperature t0, for example, A = 500 + max(20, sensor temperature) × exposure time. It should be noted that the formula for calculating the threshold A is only illustrative; the formula consists of a constant 500 and variables based on temperature and exposure time. Here, 500 is a base value used to set the starting point for the threshold, an empirical value derived through experimentation or experience. max(20, sensor temperature) * exposure time ensures that the temperature's influence on the threshold is no less than 20 degrees Celsius, and the threshold increases with increasing exposure time, reflecting the impact of exposure time on dark field image quality. For example, if T0 = 10 ms and the sensor temperature t0 is 22℃, then A = 500 + max(20,25) × 15, A = 500 + 25 × 15 = 500 + 375 = 875; the dark field threshold A = 875. The sensor temperature is relatively high (25℃), and the threshold increases with temperature, reflecting the significant impact of high temperature on the dark field. Furthermore, the longer exposure time further increases the threshold. Alternatively, if T0 = 10 ms and the sensor temperature t0 is 18℃, then A = 500 + max(20,18) × 10, A = 500 + 20 × 10 = 500 + 200 = 700, and the dark field threshold A = 700. Because the sensor temperature is below 20℃, 20℃ is used as the lower limit, reflecting that temperature has a relatively small impact on the dark field, but the exposure time has a significant increase in the threshold.

[0103] For example, A = 600 + max(25, sensor temperature) × exposure time. Assuming the exposure time is T0 = 10ms, if the sensor temperature t0 is 22℃, then A = 600 + max(25, 22) × 10. Since max(25, 22) = 25, therefore: A = 600 + 25 × 10 = 600 + 250 = 850. If the sensor temperature t0 is 30℃, A = 600 + max(25, 30) × 10 = 600 + 30 × 10 = 600 + 300 = 900. This threshold is suitable for scenarios requiring higher sensitivity or stronger interference suppression.

[0104] For example, A = 400 + max(15, sensor temperature) × exposure time. Assuming the exposure time is T0 = 8ms, if the sensor temperature t0 is 12℃, then A = 400 + max(15, 12) × 8, A = 400 + 15 × 8 = 400 + 120 = 520. In this case, the threshold A is suitable for situations with low noise or small temperature changes.

[0105] The above formula is merely illustrative; in practical applications, the parameters of the formula can be adjusted accordingly.

[0106] The average brightness 'a' of the dark field image P0 is calculated using an algorithm.

[0107] Compare the values ​​of A and a. If A ≥ a, save the dark field image P0, ambient temperature t0, and exposure time T0. If the condition is not met, return to the shooting instruction step.

[0108] Step S3: Capture the target image.

[0109] Receive shooting instructions, including exposure time T1 and filter selection.

[0110] Furthermore, compare T1 and T0. If they are equal or within a tolerable range (e.g., a maximum deviation of 30%), continue; otherwise, return to the initial settings. It should be noted that excessive deviation may be due to dark-field calibration failure. Excessive deviation can lead to a significant decrease in image quality, potentially causing image blurring, loss of detail, or a reduced signal-to-noise ratio, thus affecting the accuracy of subsequent data analysis and judgment.

[0111] Determine the state of the shooting mode switching layer. If it is light-transmitting, continue; if it is light-blocking, the second driving component drives the shooting mode switching layer to switch to the light-transmitting state.

[0112] The filter switching layer status is determined based on the set target filter. If it matches, the process continues; otherwise, the first driving component is controlled to drive the filter switching layer to adjust the target filter.

[0113] The target image P1 is captured based on the exposure time T1.

[0114] During the temperature sensor test, the ambient temperature t1 is compared with the temperature difference ∆t (|t1-t0|) to see if it is less than the temperature difference threshold B (e.g., 3 degrees Celsius). If it is, continue; otherwise, return to the initial settings.

[0115] In the above implementation, the temperature difference threshold is set to 3 degrees Celsius to ensure the stability of the imaging system and image quality. In actual shooting environments, temperature changes can affect sensor performance, leading to signal drift or image noise. A range of 3 degrees Celsius is considered effective in handling small temperature fluctuations, ensuring the accuracy of dark-field calibration, avoiding temperature-induced errors, and thus improving data reliability and consistency. Of course, in practical applications, other temperature deviations that guarantee image quality can be set.

[0116] Store the target image P1. Based on the dark field image P0 and the target image P1, subtract the dark field pixel by pixel to form the final image P. 11 .

[0117] The automatic filter switching and dark field calibration method for imaging systems based on optical adjustment devices provided in this application can automatically complete filter switching, dark field calibration and target image capture, significantly improving the efficiency and accuracy of the imaging system. It is suitable for applications with high image quality requirements, such as scientific research and astrophotography.

[0118] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An optical adjustment device, characterized in that, The optical adjustment device includes: a filter switching layer having a first driving element and at least two different types of filters, an imaging mode switching layer having a transparent window and a second driving element, a first housing, and a second housing; Both the first housing and the second housing are provided with light-transmitting windows on the same optical path; The filter switching layer and the imaging mode switching layer are disposed between the first housing and the second housing; The first driving element is configured to drive different types of filters in the filter switching layer to move to the optical path where the light-transmitting window is located; The second driving element is configured to drive the transparent window or opaque area in the imaging mode switching layer to move to the optical path where the light-transmitting window is located.

2. The optical adjustment device according to claim 1, characterized in that, The filter switching layer further includes a filter holder and a first connecting rod; the filter includes a first filter and a second filter; The first filter and the second filter are disposed on the filter holder; The filter holder is connected to the first driving member via the first connecting rod and is configured to move along a preset path under the drive of the first driving member, so as to move the first filter or the second filter to the optical path where the light-transmitting window is located.

3. The optical adjustment device according to claim 2, characterized in that, The filter holder includes a first connecting portion; The first connecting rod connects the first connecting part and the first driving member, and is configured to drive the filter holder to move along the first connecting rod under the drive of the first driving member.

4. The optical adjustment device according to claim 2, characterized in that, The filter holder further includes a first limiting hole; the first connecting rod includes a first connecting boss; The first connecting boss is engaged in the first limiting hole and configured to move along a preset path under the drive of the first driving member.

5. The optical adjustment device according to claim 1, characterized in that, The first driving member and the second driving member are respectively located at both ends of the optical adjustment device in the first direction.

6. The optical adjustment device according to claim 4, characterized in that, The surface of the second housing that contacts the filter switching layer is provided with a locking groove, and the locking groove matches the movement trajectory of the first connecting boss; The locking slot is configured to guide the first connecting boss to slide within the locking slot when the first connecting boss moves along a preset path.

7. The optical adjustment device according to claim 1, characterized in that, The imaging mode switching layer includes a second connecting rod and an imaging support; The second connecting rod connects the imaging bracket and the second driving member, and is configured to drive the imaging bracket to move under the drive of the second driving member, so as to switch the imaging mode.

8. The optical adjustment device according to claim 7, characterized in that, The imaging support includes a second connecting portion; The second connecting rod connects the second connecting part and the second driving member, and is configured to drive the imaging bracket to move along the second connecting rod under the drive of the second driving member.

9. The optical adjustment device according to claim 7, characterized in that, The imaging bracket further includes a second limiting hole, and the second connecting rod includes a second connecting boss. The second connecting boss is engaged in the limiting hole and configured to move along a preset path under the drive of the second driving member.

10. An imaging system, characterized in that, The imaging system includes the optical adjustment device as described in any one of claims 1-9.

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