Variable system optical imaging system and system regulation and control method

Abstract

The invention relates to a variable system optical imaging system and a system regulation and control method, which can realize flexible switching between a narrow-view-field long-focus state and a wide-view-field short-focus state so as to adapt to view field angle and resolution requirements of different imaging scenes such as astronomical observation, space target detection or security monitoring. The variable system optical imaging system comprises a photosensitive component which is provided with a curvature-adjustable photosensitive surface so as to be switched between a plane state and a curved surface state; the zoom lens is arranged on the light sensing side of the light sensing assembly, and the zoom lens is optically coupled to the light sensing assembly; when the photosensitive component is in a plane state, the curvature of the photosensitive surface is zero, and the zoom lens correspondingly increases the focal length to form a long-focus system imaging system; when the photosensitive assembly is in a curved surface state, the curvature of the photosensitive surface is greater than zero, and the zoom lens correspondingly reduces the focal length to form a short-focus system imaging system.

Description

Technical Field

[0001] This application relates to the field of optical imaging technology, and in particular to a variable-structure optical imaging system and a system control method. Background Technology

[0002] Currently, optical imaging systems are widely used in various fields such as astronomical observation, space target detection, and security monitoring. Depending on the application scenario, there are different requirements for indicators such as imaging field of view, resolution, and system compactness.

[0003] For example, long-focal-length imaging systems focus on high-precision observation of fixed areas, requiring high imaging resolution. Their core applications include fixed-point target monitoring, detailed feature recognition, and precise target trajectory tracking, such as fine-grained observation of small celestial bodies in near-Earth space, fixed-point observation of key areas for national defense and border defense, high-level target detail acquisition for security monitoring, and precision industrial inspection. To achieve its core objectives, this long-focal-length imaging system prioritizes technical indicators with high imaging resolution far exceeding the field of view. This requires pixel-level detail capture of targets within a narrow field of view, clearly identifying the target's shape, structure, texture, and other features, while simultaneously ensuring a high signal-to-noise ratio to avoid noise interference in target feature extraction.

[0004] Short-focal-length imaging systems, on the other hand, focus on rapid coverage of wide areas, requiring a large field of view. Their core applications include wide-area monitoring, early warning of sudden targets, and comprehensive situational awareness, such as deep-space wide-area celestial object early warning, space debris detection, large-scale border early warning for national defense and border defense, urban security monitoring, and wide-area forest fire monitoring. To achieve its core objectives, the short-focal-length imaging system prioritizes technical specifications with a field of view far exceeding imaging resolution. This necessitates achieving seamless, blind-spot-free coverage imaging across an ultra-wide field of view, enabling rapid detection of new or moving targets within the area, and preliminary target type identification and location calibration. Furthermore, it requires strong environmental adaptability, enabling effective imaging under adverse conditions such as low light and complex weather.

[0005] In summary, due to differences in their core design goals and application scenarios, long-focal-length imaging systems and short-focal-length imaging systems exhibit distinct technological differences: prioritizing accuracy in narrow fields of view versus prioritizing coverage in wide fields of view. Consequently, to meet their respective core requirements, existing long-focal-length and short-focal-length imaging systems have developed fixed technological paths in sensor selection and optical system design. This has laid the groundwork for subsequent defects such as fixed systems and incompatible functions. Summary of the Invention

[0006] To address the issue that existing optical imaging systems, due to their fixed technical specifications, cannot simultaneously meet the needs of both long-focal and short-focal-length scenarios, resulting in functional fragmentation, this application provides a variable-system optical imaging system and a system control method. This system enables flexible switching between narrow-field long-focal-length and wide-field short-focal-length modes to adapt to the field of view and resolution requirements of different imaging scenarios, such as astronomical observation, space target detection, or security monitoring.

[0007] According to one aspect of this application, some embodiments of this application provide a variable-mode optical imaging system, comprising: a photosensitive component having a photosensitive surface with adjustable curvature to switch between a planar state and a curved state; and a zoom lens disposed on the photosensitive side of the photosensitive component and optically coupled to the photosensitive component; when the photosensitive component is in a planar state, the curvature of the photosensitive surface is zero, and the zoom lens correspondingly increases its focal length to form a telephoto imaging system; when the photosensitive component is in a curved state, the curvature of the photosensitive surface is greater than zero, and the zoom lens correspondingly decreases its focal length to form a short-focal-length imaging system.

[0008] In some embodiments of this application, the photosensitive component includes a flexible image sensor providing the photosensitive surface, a flexible readout circuit, a structural support mechanism, and a deformation driving mechanism; the flexible image sensor is conductively attached to the surface of the flexible readout circuit; the flexible image sensor and the flexible readout circuit are mounted on the structural support mechanism; the deformation driving mechanism is connected to the structural support mechanism and is used to drive the flexible image sensor to deform through the structural support mechanism to adjust the curvature of the photosensitive surface.

[0009] In some embodiments of this application, the photosensitive component further includes a control module communicatively connected to the deformation driving mechanism and a curvature detection module communicatively connected to the control module; the curvature detection module is used to detect the curvature of the photosensitive surface to obtain curvature information; the control module is used to control the deformation driving mechanism to drive the structural support mechanism based on the curvature information.

[0010] In some embodiments of this application, when the photosensitive component is in a curved state, the surface shape of the photosensitive surface is cylindrical.

[0011] In some embodiments of this application, the flexible image sensor is an ultra-thin flexible linear array image sensor chip.

[0012] In some embodiments of this application, the thickness of the flexible image sensor is between 15µm and 100µm.

[0013] In some embodiments of this application, the structural support mechanism has a cylindrical structure; the flexible image sensor and the flexible readout circuit are fixed on the cylindrical structure of the structural support mechanism, and the structural support mechanism is mechanically connected to the deformation driving mechanism.

[0014] In some embodiments of this application, the zoom lens includes a lens mount and a zoom lens group; the lens mount is fixedly connected to the photosensitive component, and the zoom lens group is mounted on the lens mount to be positioned on the photosensitive path of the photosensitive component.

[0015] In some embodiments of this application, the focal length adjustment range of the zoom lens group includes a telephoto adjustment range and a short focal length adjustment range, wherein the imaging surface of the zoom lens group in the telephoto adjustment range is a planar image plane, and the imaging surface of the zoom lens group in the short focal length adjustment range is a curved image plane.

[0016] In some embodiments of this application, the zoom lens further includes an aperture adjustment mechanism disposed on the lens mount; wherein the aperture adjustment mechanism is coaxially arranged with the zoom lens group, and the aperture adjustment mechanism is communicatively connected to the photosensitive component for correspondingly adjusting the size of the aperture.

[0017] In some embodiments of this application, the zoom lens group includes multiple aberration-correcting lenses and a zoom drive mechanism; the aberration-correcting lenses are movably assembled to the lens mount; wherein the zoom drive mechanism is driven and connected to the aberration-correcting lenses, and is communicatively connected to the photosensitive component, for driving the aberration-correcting lenses to move axially relative to the lens mount to adaptively adjust the focal length.

[0018] According to another aspect of this application, one embodiment of this application further provides a system control method for the variable-structure optical imaging system described in any of the above claims, comprising the steps of: When high-precision narrow field-of-view observation is required, the photosensitive component is controlled to switch to a planar state to form a planar photosensitive surface, and the focal length of the zoom lens is simultaneously increased to switch to a telephoto state, so that the variable optical imaging system switches to a telephoto imaging mode; and when wide field-of-view wide-area coverage monitoring is required, the photosensitive component is controlled to switch to a curved state to form a curved photosensitive surface, and the focal length of the zoom lens is simultaneously decreased to switch to a short focal length state, so that the variable optical imaging system switches to a short focal length imaging mode.

[0019] In summary, this application constructs a variable-mode optical imaging system integrating long-focus and short-focus lenses, breaking the functional separation between existing long-focus and short-focus imaging systems. This allows the same optical imaging system to meet the needs of both high-precision narrow-field observation and wide-field wide-area coverage monitoring, significantly improving the system's scene adaptability and usage flexibility.

[0020] Furthermore, the variable-mode optical imaging system of this application can replace the two independent systems of traditional long-focal-length imaging system and short-focal-length imaging system with a single system, which significantly reduces the R&D cost, production cost and deployment cost of hardware equipment. Attached Figure Description

[0021] Figure 1 This is a block diagram of a variable-structure optical imaging system according to an embodiment of this application; Figure 2 A schematic diagram of the structure of the variable-mode optical imaging system according to the above embodiments of this application in telephoto mode is shown. Figure 3 A schematic diagram of the imaging principle of the variable system optical imaging system according to the above embodiments of this application in telephoto system imaging mode is shown. Figure 4 A schematic diagram of the structure of the variable-mode optical imaging system according to the above embodiments of this application in short-focal-length imaging mode is shown. Figure 5 A schematic diagram of the imaging principle of the variable-mode optical imaging system according to the above embodiments of this application in short-focal-length imaging mode is shown. Figure 6 This is a flowchart illustrating a system control method according to an embodiment of this application.

[0022] Explanation of key component symbols: 10. Photosensitive component; 100. Photosensitive surface; 11. Flexible image sensor; 12. Flexible readout circuit; 13. Structural support mechanism; 131. Fixed base; 132. Flexible plate; 133. Support slider; 134. Push rod; 14. Deformation drive mechanism; 15. Control module; 16. Curvature detection module; 20. Zoom lens; 21. Lens mount; 22. Zoom lens group; 221. Aberration-correcting lens; 222. Zoom drive mechanism; 23. Aperture adjustment mechanism.

[0023] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a further detailed explanation of this application. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] Existing telephoto imaging systems, in order to achieve high-precision paraxial imaging, generally employ planar image sensors. Their imaging structure limits the system's field of view, making wide-area coverage imaging impossible and failing to meet the full-field detection requirements of short-focal-length scenarios. Conversely, existing short-focal-length imaging systems, in order to achieve wide-field-of-view imaging, prioritize focusing on the curved image plane structure caused by the large field of view in their optical lens design, thus failing to meet the detailed observation requirements of telephoto scenarios. In other words, existing optical imaging systems suffer from a fixed design, unable to simultaneously meet the needs of both telephoto and short-focal-length scenarios, resulting in functional fragmentation: telephoto imaging systems can only achieve high-precision narrow-field observation and cannot perform wide-area early warning; short-focal-length imaging systems can only achieve wide-field-of-view coverage and cannot perform high-precision telephoto monitoring.

[0030] Therefore, in view of the technical defects of existing telephoto and short-focal-length imaging systems due to their fixed structure and incompatible switching functions, this application creatively provides a variable-structure optical imaging system and system control method. It can achieve flexible switching between narrow field-of-view telephoto mode and wide field-of-view short-focal-length mode by linking the curvature switching of the photosensitive component with the focal length adjustment of the zoom lens. This allows the same optical imaging system to adapt to the field of view and resolution requirements of different imaging scenarios such as astronomical observation, space target detection or security monitoring, while ensuring excellent imaging quality in both modes.

[0031] Specifically, such as Figures 1 to 5 As shown, one embodiment of this application provides a variable-structure optical imaging system, which may include a photosensitive element 10 and a zoom lens 20. The photosensitive element 10 has a photosensitive surface 100 with adjustable curvature to switch between a planar state and a curved state. The zoom lens 20 is disposed on the photosensitive side of the photosensitive element 10 and is optically coupled to the photosensitive element 10, such that external light first passes through the zoom lens 20 to be modulated into an image before being received by the photosensitive element 10 to acquire image data.

[0032] More specifically, such as Figure 2 and Figure 3 As shown, when the photosensitive component 10 is in a planar state, the curvature of the photosensitive surface 100 is zero, forming a planar photosensitive surface; at this time, the zoom lens 20 correspondingly increases its focal length to form a telephoto imaging system, enabling the zoom lens 20 to provide a planar imaging surface that matches the planar photosensitive surface. Figure 4 and Figure 5As shown, when the photosensitive component 10 is in a curved state, the curvature of the photosensitive surface 100 is greater than zero, forming a concave photosensitive surface. At this time, the zoom lens 20 correspondingly reduces its focal length to form a short-focal-length imaging system, enabling the zoom lens 20 to provide a concave imaging surface that matches the concave photosensitive surface. It is understood that in other embodiments of this application, when the photosensitive component 10 is in a curved state, the curvature of the photosensitive surface 100 can also be less than zero, forming a convex photosensitive surface, which facilitates matching the convex imaging surface of a specific lens.

[0033] Thus, as Figure 2 and Figure 3 As shown, when the variable-mode optical imaging system of this application needs to perform high-precision narrow field-of-view observation, the photosensitive component 10 switches to a planar state to form a planar photosensitive surface, and the zoom lens 20 simultaneously increases the focal length to switch to a telephoto state, so that the variable-mode optical imaging system switches to a telephoto imaging mode, which exhibits paraxial imaging characteristics as a whole, and finally achieves a clear imaging effect of target details within a narrow field of view.

[0034] And such Figure 4 and Figure 5 As shown, when the variable-mode optical imaging system of this application needs to perform wide-field-of-view wide-area coverage monitoring, the photosensitive component 10 switches to a curved state to form a curved photosensitive surface, and the zoom lens 20 simultaneously adjusts its focal length to switch to a short focal length state, so that the variable-mode optical imaging system switches to a short focal length imaging mode, and its imaging surface exhibits a large field curvature characteristic; at this time, the curved photosensitive surface of the photosensitive component 10 can be matched accordingly to achieve the best imaging effect, and finally achieve an imaging effect with a significantly increased field of view.

[0035] It is worth noting that the variable-mode optical imaging system of this application provides a synchronous linkage adjustment mechanism for the curvature of the photosensitive surface and the focal length of the lens, realizing adaptive linkage adjustment between the curvature of the photosensitive surface and the focal length of the lens. This enables the variable-mode optical imaging system to have excellent imaging quality in both telephoto and short-focal-length imaging modes, solving the technical problem that existing optical imaging systems cannot simultaneously meet the needs of telephoto and short-focal-length scenarios. In other words, this application constructs a telephoto + short-focal-length integrated variable-mode optical imaging system, breaking the functional separation of existing telephoto and short-focal-length imaging systems. This allows the same optical imaging system to meet the needs of high-precision narrow-field observation and wide-field wide-area coverage monitoring, significantly improving the system's scene adaptability and usage flexibility.

[0036] Furthermore, the variable-mode optical imaging system of this application can replace the two independent systems of traditional long-focal-length imaging system and short-focal-length imaging system with a single system, which significantly reduces the R&D cost, production cost and deployment cost of hardware equipment.

[0037] For example, such as Figures 1 to 5 As shown, the photosensitive assembly 10 may include a flexible image sensor 11 providing the photosensitive surface 100, a flexible readout circuit 12, a structural support mechanism 13, and a deformation driving mechanism 14; the flexible image sensor 11 is conductively attached to the surface of the flexible readout circuit 12; the flexible image sensor 11 and the flexible readout circuit 12 are mounted on the structural support mechanism 13; the deformation driving mechanism 14 is connected to the structural support mechanism 13 and is used to drive the flexible image sensor 11 to deform through the structural support mechanism 13 to adjust the curvature of the photosensitive surface 100, so that the photosensitive assembly 10 switches between a planar state and a curved state.

[0038] Optionally, such as Figure 1 As shown, the photosensitive component 10 also includes a control module 15 communicatively connected to the deformation driving mechanism 14 and a curvature detection module 16 communicatively connected to the control module 15. The curvature detection module 16 is used to detect the curvature of the photosensitive surface 100 to obtain curvature information. The control module 15 is used to control the deformation driving mechanism 14 to drive the structural support mechanism 13 based on the curvature information, so that the flexible image sensor 11 deforms, thereby realizing the continuous and precise adjustment of the photosensitive component 10 between planar and curved states, which is beneficial to adapting to the imaging needs of different scenarios.

[0039] Optionally, such as Figure 4 and Figure 5 As shown, when the photosensitive component 10 is in a curved state, the surface shape of the photosensitive surface 100 of the photosensitive component 10 is implemented as a cylindrical surface, so as to reduce the difficulty of adjusting the curvature of the photosensitive component 10 while matching the curved image surface.

[0040] Optionally, the flexible image sensor 11 is implemented as an ultra-thin flexible linear array image sensor chip. As the core photosensitive component, it is made of a thinned silicon linear array chip, which retains the high pixel density characteristics and can be attached to the surface of the flexible readout circuit 12 to realize the acquisition and preliminary conversion of light signals.

[0041] It is worth noting that the silicon baseline array chip mentioned in this application can be a commercially available high-pixel silicon baseline array chip, which can be thinned to 15µm to 100µm using silicon-based thinning technology, while still retaining the original chip's pixel scale and pixel size. In other words, the thickness of the flexible image sensor 11 can be between 15µm and 100µm, which can retain the high pixel density characteristics while also possessing flexibility, so as to ensure that the photosensitive surface 100 can continuously adjust its curvature between a plane (curvature equal to zero) and a cylindrical surface (curvature greater than zero).

[0042] Optionally, the flexible readout circuit 12 has flexible and bendable characteristics, and can deform synchronously with the ultra-thin flexible linear image sensor chip. It is understood that after the flexible readout circuit 12 mentioned in this application is electrically connected to the flexible image sensor 11, it can complete the reading, amplification and transmission of electrical signals, etc., which will not be described in detail in this application.

[0043] Optionally, the structural support mechanism 13 has a cylindrical structure to form a cylindrical support member, which not only provides structural support for the flexible image sensor 11 and the flexible readout circuit 12, but also serves as an execution carrier for curvature adjustment. It is mechanically connected to the deformation drive mechanism 14 to receive the power from the deformation drive mechanism 14 to complete the extension or bending action, thereby driving the flexible image sensor 11 to deform and realize the curvature adjustment of the photosensitive surface 100.

[0044] It is worth noting that, such as Figure 2 and Figure 4 As shown, the flexible image sensor 11 and the flexible readout circuit 12 can be fixed on the cylindrical structure of the structural support mechanism 13, and the structural support mechanism 13 is mechanically connected to the deformation driving mechanism 14 to achieve adaptive adjustment of the curvature of the photosensitive surface.

[0045] For example, the structural support mechanism 13 can adopt a single-axis pure bending structure with fixed supports at both ends and a single-point jacking at the center. Specifically, such as Figure 2 and Figure 4 As shown, the structural support mechanism 13 may include a fixed base 131, a flexible plate 132 on which the flexible image sensor 11 and the flexible readout circuit 12 are fixedly mounted, a pair of support sliders 133 that are laterally slidable on the fixed base 131 and fixedly connected to opposite ends of the flexible plate 132, and a push rod 134 that is longitudinally slidable on the fixed base 131 and fixedly connected to the middle of the flexible plate 132; the deformation driving mechanism 14 is mechanically connected to the push rod 134 to drive the push rod 134 to slide longitudinally relative to the fixed base 131. It is understood that the lateral direction mentioned in this application refers to the direction perpendicular to the normal of the photosensitive surface 100, that is, perpendicular to the axis of the zoom lens 20, such as... Figure 2 The left and right directions are shown; the longitudinal direction mentioned in this application refers to the direction parallel to the normal of the photosensitive surface 100, that is, the axis of the zoom lens 20, such as... Figure 2 The up and down directions are shown.

[0046] In this way, when the deformation driving mechanism 14 drives the push rod 134 to slide longitudinally relative to the fixed base 131, the flexible plate 132 can drive the photosensitive surface shape of the flexible image sensor 11 to switch between a plane and a cylindrical surface. This can adjust the curvature of the photosensitive surface 100 to match the imaging surface of the zoom lens 20, without causing wrinkles or deformation of the flexible image sensor 11, which helps to ensure better imaging quality.

[0047] It should be noted that the structural support mechanism 13 of this application can also adopt other uniaxial bending mechanical structures, as long as they can adapt to the continuous adjustment requirements of the photosensitive surface 100 between the plane and the cylindrical surface. This application will not elaborate on this further.

[0048] Furthermore, the variable-structure optical imaging system of this application can burn the control program of the flexible image sensor 11 into an embedded system, so that image information can be read normally after the parameter settings are completed. The variable-structure optical imaging system of this application can also design relevant programs for the deformation driving mechanism 14, so as to automatically adjust the deformation of the flexible image sensor 11 and realize the adaptive adjustment of the photosensitive surface 100 between different curvatures of the plane and the cylinder.

[0049] According to the above embodiments of this application, as Figures 1 to 5 As shown, the zoom lens 20 may include a lens mount 21 and a zoom lens group 22; the lens mount 21 is fixedly connected to the photosensitive assembly 10; the zoom lens group 22 is mounted on the lens mount 21 so as to be located on the light-sensing path of the photosensitive assembly 10. The focal length adjustment range of the zoom lens group 22 includes a telephoto adjustment range and a short focal length adjustment range, wherein the imaging surface of the zoom lens group 22 in the telephoto adjustment range is implemented as a planar image surface, and the imaging surface of the zoom lens group 22 in the short focal length adjustment range is implemented as a curved image surface, so as to adjust the focal length of the zoom lens group 22 accordingly according to the state of the photosensitive assembly 10 (i.e., planar state and curved state), ensuring that light can be clearly imaged on the photosensitive surface 100 of the photosensitive assembly 10 in both states, reducing aberrations.

[0050] It is worth noting that traditional zoom lenses are prone to aberrations such as field curvature at short focal lengths, resulting in low zoom magnification. However, the variable-mode optical imaging system of this application can compensate for aberrations such as field curvature or spherical aberration in short focal length imaging mode by adjusting the curvature of the photosensitive surface 100. This allows the zoom lens 20 of this application to achieve a higher zoom magnification, thus meeting the imaging needs of both telephoto and short focal length scenes. Furthermore, the zoom lens group 22 mentioned in this application can be directly designed as a curved image plane during short focal length design without considering aberration correction such as field curvature, which helps to reduce the design difficulty of the zoom lens group 22.

[0051] For example, taking a full-frame zoom lens as an example, the traditional zoom range is about 4x zoom from 100mm to 400mm or 5x zoom from 70mm to 350mm; while the zoom lens 20 of this application can achieve more than 10x zoom. The upper and lower limits of the specific focal length range depend on the circumferential distance between the lenses, the focal length distribution of the lenses themselves, and the mechanical space between the lens and the camera body. Instead, it is no longer affected by aberrations such as field curvature of the traditional optical system.

[0052] Optionally, such as Figure 1 , Figure 2 as well as Figure 4 As shown, the zoom lens group 22 includes multiple aberration-correcting lenses 221 and a zoom drive mechanism 222. The aberration-correcting lenses 221 are movably assembled to the lens mount 21. The zoom drive mechanism 222 is driven and connected to the aberration-correcting lenses 221, and is communicatively connected to the control module 15 of the photosensitive assembly 10. It receives instructions from the control module 15 to drive the aberration-correcting lenses 221 to move axially relative to the lens mount 21, thereby adjusting the lens spacing and achieving adaptive changes in the lens focal length. This facilitates matching the image plane requirements of the flexible image sensor 11 under different photosensitive surface curvatures. It is understood that the zoom lens group 22 mentioned in this application adopts an aberration-correction design, which can match the photosensitive surface 100 of the flexible image sensor 11. It is not necessary to optimize the zoom lens 20 when changing from telephoto mode to short-focus mode due to the large changes in aberrations such as field curvature or spherical aberration at the edge of the field of view. It is only necessary to adjust the curvature of the photosensitive surface 100 of the flexible image sensor 11 accordingly.

[0053] For example, such as Figure 2 and Figure 4 As shown, the aberration-correcting lens 221 located at the front and rear of the lens are both fixedly assembled to the lens mount 21; the aberration-correcting lens 221 located in the middle of the lens is movably assembled to the lens mount 21 and connected to the zoom drive mechanism 222, so that the zoom lens group 22 does not change the lens length when focusing, which helps to ensure that the overall shape of the variable-mode optical imaging system remains unchanged. It is understood that in other examples of this application, the aberration-correcting lens 221 located at the front and / or rear of the lens can also be movably assembled to the lens mount 21 and connected to the zoom drive mechanism 222, as long as the required zoom requirement can be achieved, and this application will not elaborate further.

[0054] Optionally, such as Figure 1 , Figure 2 as well as Figure 4As shown, the zoom lens 20 also includes an aperture adjustment mechanism 23 disposed on the lens mount 21; wherein the aperture adjustment mechanism 23 is coaxially arranged with the zoom lens group 22, and the aperture adjustment mechanism 23 is communicatively connected to the control module 15 of the photosensitive component 10, for receiving instructions from the control module 15 and correspondingly adjusting the size of the aperture to control the amount of light entering, thereby ensuring that the variable optical imaging system can have high signal-to-noise ratio imaging quality in different states and / or different application environments, which is beneficial to suppressing vignetting effect.

[0055] It is worth noting that the lens mount 21 mentioned in this application can provide positioning support for the zoom lens group 22 and the aperture adjustment mechanism 23 to ensure the coaxiality of the zoom lens group 22 and the aperture adjustment mechanism 23; at the same time, the lens mount 21 can also be seamlessly connected to the structural support mechanism 13 of the photosensitive component 10 to ensure the optical coupling accuracy of the overall system.

[0056] Furthermore, the variable-mode optical imaging system of this application can also be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the variable-mode optical imaging system to perform corresponding operations, thereby realizing intelligent control of the variable-mode optical imaging system and improving the user experience.

[0057] In summary, the variable-mode optical imaging system of this application can be adapted to different application scenarios such as astronomical observation, space target detection, or security monitoring through hardware construction, software debugging, and performance testing. It can meet the needs of high-precision long-focus detection in narrow field of view and short-focus detection with wide field of view and wide coverage. Thus, while ensuring excellent system performance and stable operation, it can minimize R&D and manufacturing costs and has good industrialization potential.

[0058] It is important to note that in terms of hardware assembly: first, the ultra-thin flexible linear array image sensor chip and the flexible readout circuit 12 are precisely bonded and electrically connected, and then installed on the cylindrical structure of the structural support mechanism 13, and connected to the deformation drive mechanism 14 and the control module 15 to achieve the adjustment of the curvature of the photosensitive surface; then, the zoom lens group 22 and the aperture adjustment mechanism 23 are installed on the lens mount 21, and the zoom drive mechanism 222 is connected to perform the adjustment and verification of the focal length and aperture, thereby ensuring the adjustment accuracy and response speed; finally, the lens mount 21 is connected to the structural support mechanism 13 to complete the system assembly.

[0059] Regarding software debugging: for the driver of the flexible image sensor 11, the control program can be burned into the embedded system, the parameters can be set, and it can be confirmed that the flexible image sensor 11 can read image information normally; for the driver of the structural support mechanism 13, a relevant program can be designed to adjust the deformation of the flexible image sensor 11, so that the photosensitive surface 100 can continuously switch between different curvatures between the plane and the cylinder.

[0060] In terms of performance testing: when the variable optical imaging system is switched to long focal length imaging mode, the optical system is verified to exhibit paraxial imaging characteristics, and the imaging effect is that the target details are clear within the field of view but the field of view is small; when the variable optical imaging system is switched to short focal length imaging mode, the imaging surface of the optical system is verified to exhibit large field curvature, and the flexible image sensor 11 is matched accordingly to achieve the best imaging effect, and the final imaging effect is that the field of view is greatly increased.

[0061] It is worth mentioning that, according to another aspect of this application, such as Figure 6 As shown, one embodiment of this application further provides a system control method for the above-described variable-structure optical imaging system, which may include the following steps: S100: When high-precision narrow field of view observation is required, the photosensitive component is controlled to switch to a planar state to form a planar photosensitive surface, and the focal length of the zoom lens is simultaneously increased to switch to a telephoto state, so that the variable system optical imaging system switches to a telephoto system imaging mode. S200: When wide field of view and wide coverage monitoring is required, control the photosensitive component to switch to curved state to form a curved photosensitive surface, and simultaneously reduce the focal length of the zoom lens to switch to short focal length state, so that the variable optical imaging system switches to short focal length imaging mode.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A variable-structure optical imaging system, characterized in that, include: The photosensitive component has a photosensitive surface with adjustable curvature to switch between a planar state and a curved state; and A zoom lens, wherein the zoom lens is disposed on the photosensitive side of the photosensitive element and the zoom lens is optically coupled to the photosensitive element; When the photosensitive component is in a planar state, the curvature of the photosensitive surface is zero, and the zoom lens correspondingly increases the focal length to form a telephoto imaging system. When the photosensitive component is in a curved state, the curvature of the photosensitive surface is greater than zero, and the zoom lens correspondingly reduces the focal length to form a short-focal-length imaging system.

2. The variable-structure optical imaging system according to claim 1, characterized in that, The photosensitive assembly includes a flexible image sensor providing the photosensitive surface, a flexible readout circuit, a structural support mechanism, and a deformation driving mechanism; the flexible image sensor is conductively attached to the surface of the flexible readout circuit; the flexible image sensor and the flexible readout circuit are mounted on the structural support mechanism; the deformation driving mechanism is connected to the structural support mechanism and is used to drive the flexible image sensor to deform through the structural support mechanism to adjust the curvature of the photosensitive surface.

3. The variable-structure optical imaging system according to claim 2, characterized in that, The photosensitive component further includes a control module communicatively connected to the deformation driving mechanism and a curvature detection module communicatively connected to the control module; the curvature detection module is used to detect the curvature of the photosensitive surface to obtain curvature information; The control module is used to control the deformation driving mechanism to drive the structural support mechanism based on curvature information.

4. The variable-structure optical imaging system according to claim 2, characterized in that, When the photosensitive component is in a curved state, the surface shape of the photosensitive surface is cylindrical.

5. The variable-structure optical imaging system according to claim 4, characterized in that, The flexible image sensor is an ultra-thin flexible linear array image sensing chip. The thickness of the flexible image sensor is between 15µm and 100µm.

6. The variable-structure optical imaging system according to claim 4, characterized in that, The structural support mechanism has a cylindrical structure; the flexible image sensor and the flexible readout circuit are fixed on the cylindrical structure of the structural support mechanism, and the structural support mechanism is mechanically connected to the deformation driving mechanism.

7. The variable-structure optical imaging system according to any one of claims 1 to 6, characterized in that, The zoom lens includes a lens mount and a zoom lens group; the lens mount is fixedly connected to the photosensitive component, and the zoom lens group is mounted on the lens mount so as to be located in the photosensitive path of the photosensitive component; The focal length adjustment range of the zoom lens group includes a telephoto adjustment range and a short focal length adjustment range. The imaging plane of the zoom lens group in the telephoto adjustment range is a planar image plane, and the imaging plane of the zoom lens group in the short focal length adjustment range is a curved image plane.

8. The variable-structure optical imaging system according to claim 7, characterized in that, The zoom lens further includes an aperture adjustment mechanism disposed on the lens mount; wherein the aperture adjustment mechanism is coaxially arranged with the zoom lens group, and the aperture adjustment mechanism is communicatively connected to the photosensitive component for correspondingly adjusting the size of the aperture.

9. The variable-structure optical imaging system according to claim 7, characterized in that, The zoom lens group includes multiple aberration-correcting lenses and a zoom drive mechanism; the aberration-correcting lenses are movably assembled to the lens mount; The zoom drive mechanism is driven and connected to the aberration-correcting lens, and is communicatively connected to the photosensitive component, for driving the aberration-correcting lens to move axially relative to the lens mount to adaptively adjust the focal length.

10. A system control method, characterized in that, For a variable-mode optical imaging system as described in any one of claims 1 to 9, the steps include: When high-precision narrow field-of-view observation is required, the photosensitive component is switched to a planar state to form a planar photosensitive surface, and the focal length of the zoom lens is simultaneously increased to switch to a telephoto state, so that the variable system optical imaging system switches to a telephoto system imaging mode. and When wide-field-of-view wide-area coverage monitoring is required, the photosensitive component is controlled to switch to curved state to form a curved photosensitive surface, and the focal length of the zoom lens is simultaneously reduced to switch to short focal length state, so that the variable optical imaging system switches to short focal length imaging mode.

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