Zoom imaging device with simultaneous acquisition of multidimensional information

Abstract

The present application relates to the technical field of image generation, and specifically relates to a zoom imaging device for simultaneously acquiring multi-dimensional information, which comprises a magnification system, a collimation system, a light splitting system and two imaging systems. The magnification system magnifies an observation target area. The collimation system receives the magnified non-parallel outgoing light and adjusts it into parallel light. The light splitting system splits the parallel light into a first light beam and a second light beam. The first imaging system comprises a first zoom system, which is used for receiving the first light beam and performing hyperspectral imaging. The second imaging system comprises a second zoom system, which is used for receiving the second light beam and performing panchromatic imaging. Both zoom systems comprise a lens barrel, two mirror chambers, two lens groups and a driving assembly. The first lens group is arranged in the first mirror chamber, and the second lens group is arranged in the second mirror chamber. The first mirror chamber is movably arranged in the lens barrel, and the second mirror chamber is arranged on one side of the lens barrel. The driving assembly drives the first mirror chamber to move, so as to simultaneously acquire the panchromatic image and the hyperspectral image of the required observation target area.

Description

Technical Field

[0001] This invention relates to the field of image generation technology, and in particular to a zoom imaging device that simultaneously acquires multi-dimensional information. Background Technology

[0002] During aerial observation, it is often necessary to equip aircraft or drones with a variety of instruments, such as electronic radar and cameras, to acquire and generate images of the target area to be observed, thereby achieving multi-dimensional acquisition of information.

[0003] Cameras, as important information-gathering instruments, can be further categorized based on their wavelength resolution capabilities into panchromatic cameras, multispectral cameras, and hyperspectral cameras. Panchromatic cameras can directly acquire and generate geometric dimensional information of a target, but lack spectral dimensional information. Hyperspectral cameras can acquire and generate spectral dimensional information of a target, but lack high-precision geometric dimensional information. Furthermore, because hyperspectral cameras typically employ narrowband filtering, they have low light energy utilization and cannot observe faint targets. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a zoom imaging device for simultaneous acquisition of multi-dimensional information. This zoom imaging device can simultaneously acquire and generate geometric and spectral information of a target area, and can also achieve continuous adjustment of the focal length to ensure high-quality imaging of the device, significantly reducing the weight carried by aircraft or UAVs and improving the accuracy of target inversion.

[0005] A zoom imaging device for simultaneously acquiring multi-dimensional information according to an embodiment of the present invention includes: A magnification system, wherein the magnification system is used to magnify the target area to be observed; A collimation system, wherein the collimation system is used to receive non-parallel outgoing light amplified by the amplification system and adjust the non-parallel outgoing light into parallel light; A beam splitting system is located in the optical path of the parallel light. The beam splitting system is used to receive the parallel light and to split the parallel light into a first beam and a second beam according to the wavelength. A first imaging system is disposed on the transmission optical path of the beam splitting system and includes a first zoom system. The first imaging system is used to receive the first beam transmitted through the beam splitting system and perform hyperspectral imaging. A second imaging system is disposed on the reflected light path of the beam splitting system and includes a second zoom system. The second imaging system is used to receive the second beam reflected by the beam splitting system and perform panchromatic imaging. The first zoom system and the second zoom system each include a lens barrel, a first lens chamber, a second lens chamber, a first lens group, a second lens group, and a drive assembly. The first lens group is installed in the first lens chamber, the second lens group is installed in the second lens chamber, the first lens chamber is movably installed in the lens barrel, the second lens chamber is installed on the side of the lens barrel away from the beam splitting system, and the drive assembly is used to drive the first lens chamber to move relative to the lens barrel.

[0006] According to embodiments of the present invention, a zoom imaging device for simultaneous acquisition of multidimensional information can simultaneously acquire and generate geometric and spectral information of a target area when using the zoom imaging device for aerial observation. This also allows for continuous adjustment of the focal length to ensure high-quality imaging, significantly reducing the weight carried by the aircraft or UAV and improving the accuracy of target inversion.

[0007] In some embodiments, the beam splitting system includes a dichroic beam splitter positioned at 45° relative to the parallel light, the dichroic beam splitter being configured to separate the parallel light into a first beam and a second beam with different wavelength ranges.

[0008] In some embodiments, the first imaging system further includes: A converging system is used to receive the first beam and compress and converge it to form a primary real image, wherein the plane in which the primary real image is located is defined as the primary image plane; A relay system is provided at the primary image plane and includes a parallel plate perpendicular to the first beam. A filter array is provided on the parallel plate, which is composed of multiple filter units with different spectral responses arranged in a preset array. The filter array is used to spatially divide the first beam at the primary image plane to achieve the spectral response of the target information. The first zoom system is located after the relay system.

[0009] In some embodiments, the parallel plate is a glass plate, the filter unit is made of organic material, and the filter array is formed on the parallel plate by photolithography.

[0010] In some embodiments, the filter array is a broadband hyperspectral filter array, which includes 16 filter units with different spectral responses, arranged in a 4×4 array.

[0011] In some embodiments, the drive assembly includes a cam, a guide member, and a guide groove. The guide groove is disposed on and penetrates the barrel wall of the lens barrel. The guide member is fixedly connected to the outer peripheral wall of the first lens chamber and passes through the guide groove. The guide groove extends axially along the lens barrel. The cam is rotatably connected to the outer peripheral wall of the lens barrel and located on one side of the guide groove. The cam rotates to drive the guide member to move along the extension direction of the guide groove.

[0012] In some embodiments, both the first zoom system and the second zoom system include two sets of drive components, the two sets of drive components are arranged along the axial direction of the lens barrel, and the cams of the two sets of drive components are respectively disposed at both ends of the axial direction of the lens barrel. One drive component is used to drive the first lens chamber to move toward one end of the axial direction of the lens barrel, and the other drive component is used to drive the first lens chamber to move toward the other end of the axial direction of the lens barrel.

[0013] In some embodiments, the first zoom system and the second zoom system further include a flexible connector, wherein the outer peripheral wall of the first lens chamber and the inner peripheral wall of the lens barrel are spaced apart to form an installation space, and the flexible connector is disposed in the installation space and fixedly connected to the outer peripheral wall of the first lens chamber and the inner peripheral wall of the lens barrel respectively.

[0014] In some embodiments, one end of the flexible connector is fixedly connected to the outer peripheral wall of the first end chamber, and the other end of the flexible connector is fixedly connected to the inner peripheral wall of the end chamber. At least a portion of the flexible connector protrudes toward the end of the end chamber to form a protrusion, which facilitates control of the deformation of the flexible connector.

[0015] In some embodiments, the flexible connectors include a plurality of flexible connectors, which are arranged sequentially along both the axial and circumferential directions of the lens barrel.

[0016] In some embodiments, the plurality of flexible connectors are divided into two groups to form two flexible connection groups within the installation space. The number of flexible connectors in the two flexible connection groups is the same. The two flexible connection groups are arranged sequentially along the axial direction of the lens barrel. The protrusions of the flexible connectors in each flexible connection group have the same protrusion direction. The protrusions of the flexible connectors in both flexible connection groups protrude toward each other.

[0017] In some embodiments, the magnification system includes a third mirror chamber and a third lens group, wherein the third lens group is disposed in the third mirror chamber; The collimation system includes a fourth mirror chamber and a fourth lens group, wherein the fourth lens group is disposed in the fourth mirror chamber; The zoom imaging device further includes a fifth mirror chamber and a sixth mirror chamber, which are sequentially connected to the side of the fourth mirror chamber away from the third mirror chamber. The beam splitting system includes a dichroic beam splitter, which is disposed in the fifth mirror chamber and located at the end of the fifth mirror chamber near the fourth mirror chamber. The parallel plate is disposed in the sixth mirror chamber. The converging system includes a fifth lens group, which is disposed in the fifth mirror chamber and located on the side of the dichroic beam splitter opposite to the fourth mirror chamber.

[0018] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a zoom imaging device according to some embodiments of the present invention; Figure 2 for Figure 1 A magnified view of region I in the middle; Figure 3 This is a top view of a zoom imaging device according to some embodiments of the present invention; Figure 4 for Figure 3 Sectional view along line AA; Figure 5 for Figure 4 Enlarged view of region II; Figure 6 This is an exploded view of a zoom imaging device according to some embodiments of the present invention; Figure 7 This is a schematic diagram of the optical path of a zoom imaging device according to some embodiments of the present invention; Figure 8 This is a schematic diagram of a relay system according to some embodiments of the present invention; Figure 9 This is a schematic diagram of the filter array of a relay system according to some embodiments of the present invention; Figure 10 This is a schematic diagram illustrating the cooperation between the endoscope tube and the first endoscope chamber in some embodiments of the present invention; Figure 11 for Figure 10 A diagram from another angle; Figure 12 for Figure 10 Another angle of the diagram; Figure 13 for Figure 12 Enlarged view of region III; Figure 14 This is a schematic diagram of a zoom imaging device according to some embodiments of the present invention used for observing a target area.

[0020] Figure label: 1000. Zoom imaging device; 100. Amplification system; 110. The Third Mirror Room; 120. The third lens group; 121. Seventh lens; 122. Eighth lens; 123. Ninth lens; 124. Sixth cemented lens; 125. Seventh cemented lens; 126. Twelfth spacer ring; 127. Thirteenth spacer ring; 128. Fourteenth spacer ring; 129. Fifteenth spacer; 1291. Sixteenth spacer; 200. Collimation system; 210. The Fourth Mirror Room; 220. Fourth lens group; 221. Tenth lens; 222. Eleventh lens; 223. Eighth cemented lens; 224. Seventeenth spacer ring; 225. Eighteenth spacer ring; 226. Nineteenth spacer ring; 300. Spectroscopic system; 310. Dichroic beam splitter; 400. First Imaging System; 410. Aggregation System; 411. The fifth lens group; 4111, Twelfth Lens; 4112, Ninth Cemented Lens; 4113, Twentieth interval; 4114, Twenty-first interval; 420. Relay system; 421. Parallel plate; 422. Filter array; 423. Filter unit; 430. First zoom system; 500. Second imaging system; 510. Second zoom system; 610. Lens tube; 620. First Mirror Room; 630. Second Mirror Room; 640. First lens group; 6401, First cemented lens; 6402, Second cemented lens; 6403, Third cemented lens; 6404, First spacer ring; 6405, Second spacer ring; 6406, Third spacer ring; 6411, Second lens; 6412, Third lens; 6413, Fourth lens; 6414, Sixth interlocking ring; 6415, Seventh interlocking ring; 6416, Eighth interlocking ring; 650. Second lens group; 6501, Fourth cemented lens; 6502, First lens; 6503, fourth spacer ring; 6504, fifth spacer ring; 6511, Fifth Lens; 6512, Sixth Lens; 6513, Fifth Cemented Lens; 6514, Ninth interval; 6515, Tenth interval; 6516, Eleventh interval; 660. Drive assembly; 661. Cam; 662. Guide component; 663. Guide groove; 664. Adapter plate; 670. Flexible connector; 671. Protrusion; 680. Installation space; 700, Fifth Mirror Room; 800, Sixth Mirror Room; 2000, First beam; 3000, Second beam; 4000, Observation target; 5000, First detector; 6000, Second detector. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] The following description, with reference to the accompanying drawings, describes a zoom imaging device 1000 for simultaneously acquiring multi-dimensional information according to an embodiment of the present invention.

[0024] Combination Figure 1 , Figure 3 and Figure 4As shown, a zoom imaging device 1000 for simultaneous acquisition of multi-dimensional information according to an embodiment of the present invention includes: a magnification system 100, a collimation system 200, a beam splitting system 300, a first imaging system 400, and a second imaging system 500.

[0025] Among them, combined Figure 1 , Figure 4 and Figure 7 As shown, the magnification system 100 is used to magnify the target area to be observed, so as to acquire and generate an image of the target area to be observed, thereby improving the observation performance of the zoom imaging device 1000 that acquires multi-dimensional information simultaneously.

[0026] Combination Figure 1 , Figure 4 and Figure 7 As shown, the collimation system 200 is used to receive the non-parallel outgoing light amplified by the amplification system 100 and adjust the non-parallel outgoing light into parallel light to avoid spectral crosstalk and improve spectral resolution.

[0027] Combination Figure 1 , Figure 4 and Figure 7 As shown, the beam splitting system 300 is located in the optical path of the parallel light. The beam splitting system 300 is used to receive the parallel light and to split the parallel light into a first beam 2000 and a second beam 3000 according to the wavelength. That is, by setting the beam splitting system 300 in the optical path of the parallel light, it is possible to split the parallel light into a first beam 2000 and a second beam 3000, thereby ensuring the performance of the beam splitting system 300.

[0028] It should be noted that, Figure 7 The optical path shown is only a schematic diagram and is not the final form to be used in practice. In actual applications, it is necessary to strictly design the key imaging parameters such as the surface shape, surface accuracy, radius of curvature, thickness, and spacing of each lens.

[0029] Combination Figure 1 , Figure 4 and Figure 7 As shown, the first imaging system 400 is disposed on the transmission light path of the beam splitting system 300. The first imaging system 400 is used to receive the first beam 2000 transmitted through the beam splitting system 300 and perform hyperspectral imaging.

[0030] Combination Figure 1 , Figure 4 and Figure 7 As shown, the second imaging system 500 is disposed on the reflected light path of the beam splitting system 300. The second imaging system 500 is used to receive the second beam 3000 reflected by the beam splitting system 300 and perform panchromatic imaging.

[0031] In summary, the function of the beam splitting system 300 is to split a parallel beam of light into two beams: one is transmitted light (the first beam 2000, which passes through the beam splitting system 300 and continues forward), and the other is reflected light (the second beam 3000, which is reflected by the beam splitting system 300 and changes direction). A first imaging system 400 is placed along the path of the first beam 2000 to receive the transmitted beam 2000 and perform hyperspectral imaging. A second imaging system 500 is placed along the path of the second beam 3000 to receive the reflected beam 3000 and perform panchromatic imaging, thus enabling multifunctional and multimodal parallel detection.

[0032] Meanwhile, by placing the first imaging system 400 on the transmission light path of the beam splitting system 300 and placing the second imaging system 500 on the reflection light path of the beam splitting system 300, the first imaging system 400 and the second imaging system 500 can be placed in different spatial directions, thus avoiding light path interference.

[0033] In some embodiments, the first imaging system 400 and the second imaging system 500 may have different magnifications, different detector types, or be designed for different wavelength ranges, so as to facilitate the use of the first imaging system 400 and the second imaging system 500 to acquire two different types of information, thereby ensuring the performance of the zoom imaging device 1000 that acquires multidimensional information simultaneously.

[0034] As can be seen from the above structure, the zoom imaging device 1000 for simultaneous acquisition of multidimensional information in this embodiment of the invention is equipped with a first imaging system 400 to receive the first beam 2000 transmitted through the beam splitting system 300 and perform hyperspectral imaging, and a second imaging system 500 to receive the second beam 3000 reflected by the beam splitting system 300 and perform panchromatic imaging. In this way, when using the zoom imaging device 1000 for simultaneous acquisition of multidimensional information for aerial observation, the zoom imaging device 1000 can simultaneously acquire the geometric and spectral information of the target area, which improves the accuracy of target inversion and provides convenience and basis for subsequent image registration, segmentation, spectral information analysis, etc.

[0035] It is understandable that, compared with the prior art, the zoom imaging device 1000 of this application, which acquires multidimensional information simultaneously, can simultaneously acquire the geometric information and spectral information of the target area, forming a zoom imaging device that simultaneously captures panchromatic and hyperspectral images.

[0036] In specific examples, combined Figure 1 and Figure 14As shown, a first detector 5000 is provided on the side of the first imaging system 400 away from the beam splitting system 300. The first detector 5000 is strictly located at the final image plane of the first imaging system 400. A second detector 6000 is provided on the side of the second imaging system 500 away from the beam splitting system 300. The second detector 6000 is strictly located at the final image plane of the second imaging system 500. The magnification system 100 is set facing the observation target 4000. The first detector 5000 and the second detector 6000 work together to realize the acquisition of two independent, synchronous and functionally differentiated photoelectric signals of the same observation target 4000, thereby meeting the requirement of simultaneously acquiring image and spectral information.

[0037] In some embodiments, combined with Figure 3 , Figure 4 and Figure 7 As shown, the beam splitting system 300 includes a dichroic beam splitter 310, which is positioned at 45° relative to the parallel light. The dichroic beam splitter 310 is configured to separate the parallel light into a first beam 2000 and a second beam 3000 with different wavelength ranges. This ensures the beam splitting performance of the beam splitting system 300, facilitating subsequent hyperspectral imaging using the first imaging system 400 to receive the first beam 2000 transmitted through the beam splitting system 300 and performing panchromatic imaging using the second imaging system 500. This allows the zoom imaging device 1000, which acquires multidimensional information simultaneously, to simultaneously acquire both geometric and spectral information of the target area.

[0038] In some embodiments, the dichroic beam splitter 310 includes a glass substrate, on which a thin film material is deposited by vacuum deposition technology. When light shines on the thin film, certain wavelengths of light are reflected, while other wavelengths of light pass through the beam splitting system 300. This allows the beam splitting system 300 to split parallel light into a first beam 2000 and a second beam 3000 according to wavelength, so as to facilitate hyperspectral imaging using the first imaging system 400 and panchromatic imaging using the second imaging system 500. This enables the zoom imaging device 1000 of this application, which simultaneously acquires multidimensional information, to acquire both geometric and spectral information of the target area, thereby achieving multidimensional information acquisition.

[0039] In a specific example, the dichroic beam splitter 310 is coated on both surfaces of the flat glass according to the actual imaging wavelength requirements. In the zoom imaging device 1000 that simultaneously acquires multidimensional information in this application, light with wavelengths of 400nm to 550nm is used for panchromatic imaging, and light with wavelengths of 550nm to 1000nm is used for hyperspectral imaging. After coating, the reflectivity and transmittance of the dichroic beam splitter 310 are both better than 98%.

[0040] In some embodiments, combined with Figure 3 , Figure 4 and Figure 7 As shown, the first imaging system 400 includes a converging system 410, a relay system 420, and a first zoom system 430. The converging system 410 receives the first beam 2000 and compresses and converges it to form a primary real image. The plane containing the primary real image is defined as the primary image plane. The relay system 420 is located at the primary image plane and includes a parallel plate 421. The parallel plate 421 is perpendicular to the first beam 2000, and a filter array 422 is provided on the parallel plate 421 (the specific structure of the filter array 422 can be found in [reference needed]). Figure 8 and Figure 9 The filter array 422 is composed of multiple filter units 423 with different spectral responses arranged in a preset array. The filter array 422 is used to spatially segment the first beam 2000 at the primary image plane to achieve the spectral response of the target information. The first zoom system 430 is located after the relay system 420. In this way, by using the convergence system 410, the relay system 420 and the first zoom system 430 in combination, hyperspectral imaging can be achieved using the first imaging system 400.

[0041] Meanwhile, by setting the first zoom system 430, the magnification and field of view of the imaging system can be continuously changed while keeping the image plane position fixed and without refocusing. This enables the focal length adjustment of the first zoom system 430, thereby adjusting the resolution of the device and solving the problem of image blurring caused by changes in object distance. This facilitates the use of the first imaging system 400 to achieve hyperspectral imaging.

[0042] In some embodiments, such as Figure 8 As shown, the parallel plate 421 is a glass plate, the filter unit 423 is made of organic material, and the filter array 422 is formed on the parallel plate 421 by photolithography. Because the glass plate has extremely high transmittance for visible and near-infrared light, using a glass plate for the parallel plate 421 minimizes light energy loss and ensures the performance of the relay system 420. Furthermore, the glass plate is corrosion-resistant, non-hygroscopic, and will not deteriorate or mold over long-term use, offering a much longer service life compared to materials such as plastics, thus maximizing the working performance of the parallel plate 421.

[0043] Furthermore, etching the filter array 422 onto the parallel plate 421 using photolithography not only allows the filter array 422 to be set on the parallel plate 421, reducing the difficulty of forming the filter array 422, but also allows the filter array 422 to be directly composited onto the surface of the parallel plate 421. This enables on-chip hyperspectral imaging technology on the parallel plate 421, simplifies the structure of the relay system 420, reduces the process complexity of the relay system 420, and improves the reliability of the development of the zoom imaging device 1000 that acquires multi-dimensional information simultaneously.

[0044] Of course, in some other embodiments, the filter array 422 can also be formed on the parallel plate 421 by nanoimprint etching.

[0045] In a specific example, parallel plate 421 is flat glass. Flat glass must have good flatness and parallelism, high surface accuracy, high transmittance, low surface roughness, good optical uniformity, low light absorption coefficient, good mechanical properties, and no bubbles or defects inside the material.

[0046] In some embodiments, the filter array 422 is a broadband hyperspectral filter array, which includes 16 filter units 423 with different spectral responses, and the 16 filter units 423 with different spectral responses are arranged in a 4×4 array.

[0047] In summary, the relay system 420 is used to realize the spectral response of the target information. Sixteen kinds of organic materials are selected to form a broadband hyperspectral filter array in a 4×4 array. The organic materials are etched onto the flat glass by photolithography. The flat glass is located at the primary image plane of the focusing system 410.

[0048] It should be noted that the size of the multiple filter arrays 422 arranged together matches the pixel specifications of the first detector 5000.

[0049] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0050] In some embodiments, combined with Figure 1 , Figure 2 and Figure 3 As shown, the second imaging system 500 includes a second zoom system 510, which is used to achieve panchromatic imaging. This ensures the working performance of the second imaging system 500.

[0051] The second zoom system 510 can also continuously change the magnification and field of view of the imaging system while keeping the image plane position fixed and without refocusing. This enables the focal length adjustment of the second imaging system 500, thereby adjusting the resolution of the device and solving the problem of image blurring caused by changes in object distance. It also facilitates the use of the second zoom system 510 to achieve panchromatic imaging.

[0052] In some embodiments, combined with Figure 3 , Figure 4 and Figure 5 As shown, both the first zoom system 430 and the second zoom system 510 include a lens barrel 610, a first lens chamber 620, a second lens chamber 630, a first lens group 640, and a second lens group 650. The first lens group 640 is installed in the first lens chamber 620, and the second lens group 650 is installed in the second lens chamber 630. The first lens chamber 620 is movably installed in the lens barrel 610, and the second lens chamber 630 is installed on the side of the lens barrel 610 away from the beam splitting system 300. It is worth noting that in this application, the first mirror chamber 620 is movably installed inside the mirror barrel 610, so that the first mirror chamber 620 can be displaced relative to the mirror barrel 610, thereby allowing the first mirror chamber 620 to be displaced relative to the second mirror chamber 630. Since the first lens group 640 is installed inside the first mirror chamber 620 and the second lens group 650 is installed inside the second mirror chamber 630, the first lens group 640 and the second lens group 650 can move relative to each other. This allows the first zoom system 430 and the second zoom system 510 to continuously change the magnification while keeping the image plane position fixed. This enables the first zoom system 430 to achieve hyperspectral imaging and the second zoom system 510 to achieve panchromatic imaging. At the same time, it also enables continuous adjustment of the focal length to ensure high-quality imaging of the zoom imaging device 1000.

[0053] In some embodiments, the geometric axis of the lens barrel 610 has high-precision coaxiality with the optical central axis, and the surface roughness of the lens barrel 610 is low.

[0054] In some embodiments, the interface end face between the second mirror chamber 630 and the mirror tube 610 has the characteristics of low surface roughness and high flatness, and interference cannot occur at the interface between the second mirror chamber 630 and the mirror tube 610.

[0055] It should be noted that the lens barrel 610 of the first zoom system 430 and the lens barrel 610 of the second zoom system 510 can adopt the same or similar structural forms.

[0056] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6As shown, the first lens group 640 of the first zoom system 430 includes a first cemented lens 6401, a second cemented lens 6402, and a third cemented lens 6403 arranged sequentially. The first cemented lens 6401 is positioned close to the beam splitting system 300. A first spacer 6404 is provided on the side of the first cemented lens 6401 facing away from the second cemented lens 6402. A second spacer 6405 is provided between the first cemented lens 6401 and the second cemented lens 6402. A third spacer 6406 is provided between the second cemented lens 6402 and the third cemented lens 6403. The first cemented lens 6401, the second cemented lens 6402, and the third cemented lens 6403, as well as the first spacer 6404, the second spacer 6405, and the third spacer 6406, are all fixedly connected to the inner peripheral wall of the first lens chamber 620 of the first zoom system 430 to ensure the performance of the first lens group 640 of the first zoom system 430.

[0057] Meanwhile, the first spacer 6404, the second spacer 6405, and the third spacer 6406 are used to fix the first cemented lens 6401, the second cemented lens 6402, and the third cemented lens 6403, thereby improving the positional stability of the first cemented lens 6401, the second cemented lens 6402, and the third cemented lens 6403, and separating the first cemented lens 6401, the second cemented lens 6402, and the third cemented lens 6403, thus ensuring the working performance of the first lens group 640 of the first zoom system 430.

[0058] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6 As shown, the second lens group 650 of the first zoom system 430 includes a fourth cemented lens 6501 and a first lens 6502 arranged sequentially. The fourth cemented lens 6501 is positioned close to the first lens group 640 of the first zoom system 430. A fourth spacer 6503 is provided on the side of the fourth cemented lens 6501 facing away from the first lens 6502. A fifth spacer 6504 is provided between the fourth cemented lens 6501 and the first lens 6502. The fourth cemented lens 6501, the first lens 6502, the fourth spacer 6503, and the fifth spacer 6504 are all fixedly connected to the inner peripheral wall of the second lens chamber 630 of the first zoom system 430 to ensure the performance of the second lens group 650 of the first zoom system 430.

[0059] At the same time, the fourth spacer 6503 and the fifth spacer 6504 can be used to fix and separate the fourth cemented lens 6501 and the first lens 6502, thereby ensuring the working performance of the second lens group 650 of the first zoom system 430.

[0060] In some embodiments, the first spacer 6404, the second spacer 6405, the third spacer 6406, the fourth spacer 6503, and the fifth spacer 6504 all have good stiffness characteristics, corrosion resistance, and low density.

[0061] In some embodiments, in the first zoom system 430, the coaxiality of the lens barrel 610, the first lens chamber 620, and the second lens chamber 630 with the optical central axis of the first zoom system 430 is less than 0.001 mm; the center deviation between the first cemented lens 6401, the second cemented lens 6402, and the third cemented lens 6403 is less than 0.002 mm and the surface roughness is less than Ra0.4; the center deviation between the fourth cemented lens 6501 and the first lens 6502 is less than 0.002 mm and the surface roughness is less than Ra0.4; the fitting clearance between the first lens group 640 and the first lens chamber 620 is less than 0.03 mm; and the fitting clearance between the second lens group 650 and the second lens chamber 630 is less than 0.03 mm.

[0062] Meanwhile, the surface shape accuracy RMS of the first cemented lens 6401, the second cemented lens 6402, the third cemented lens 6403, the fourth cemented lens 6501 and the first lens 6502 are better than λ / 60 and are coated with anti-reflection film, with a transmittance better than 98%, where λ represents the wavelength of light.

[0063] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6 As shown, the first lens group 640 of the second zoom system 510 includes a second lens 6411, a third lens 6412, and a fourth lens 6413 arranged sequentially. The second lens 6411 is positioned close to the beam splitting system 300. A sixth spacer 6414 is provided on the side of the second lens 6411 facing away from the third lens 6412. A seventh spacer 6415 is provided between the second lens 6411 and the third lens 6412. An eighth spacer 6416 is provided between the third lens 6412 and the fourth lens 6413. The second lens 6411, the third lens 6412, the fourth lens 6413, and the sixth, seventh, and eighth spacers 6414, 6415, and 6416 are all fixedly connected to the inner peripheral wall of the first lens chamber 620 of the second zoom system 510 to ensure the performance of the second zoom system 510.

[0064] At the same time, the second lens 6411, the third lens 6412 and the fourth lens 6413 can be fixed and separated by the cooperation of the sixth spacer 6414, the seventh spacer 6415 and the eighth spacer 6416, so as to ensure the working performance of the first lens group 640 of the second zoom system 510.

[0065] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6 As shown, the second lens group 650 of the second zoom system 510 includes a fifth lens 6511, a sixth lens 6512, and a fifth cemented lens 6513 arranged sequentially. The fifth lens 6511 is positioned close to the first lens group 640 of the second zoom system 510. A ninth spacer 6514 is provided on the side of the fifth lens 6511 facing away from the sixth lens 6512. A tenth spacer 6515 is provided between the fifth lens 6511 and the sixth lens 6512. An eleventh spacer 6516 is provided between the sixth lens 6512 and the fifth cemented lens 6513. The fifth lens 6511, the sixth lens 6512, the fifth cemented lens 6513, and the ninth, tenth, and eleventh spacers 6514, 6515, and 6516 are all fixedly connected to the inner peripheral wall of the second lens chamber 630 of the second zoom system 510 to ensure the performance of the second lens group 650 of the second zoom system 510.

[0066] At the same time, the fifth lens 6511, the sixth lens 6512 and the fifth cemented lens 6513 can be fixed and separated by the cooperation of the ninth spacer 6514, the tenth spacer 6515 and the eleventh spacer 6516, so as to ensure the working performance of the second lens group 650 of the second zoom system 510.

[0067] In some embodiments, the sixth spacer 6414, the seventh spacer 6415, the eighth spacer 6416, the ninth spacer 6514, the tenth spacer 6515, and the eleventh spacer 6516 all have good stiffness characteristics, corrosion resistance, and low density.

[0068] In some embodiments, in the second zoom system 510, the coaxiality of the lens barrel 610, the first lens chamber 620, and the second lens chamber 630 with the optical central axis of the second zoom system 510 is less than 0.001 mm; the center deviation between the second lens 6411, the third lens 6412, and the fourth lens 6413 is less than 0.002 mm and the surface roughness is less than Ra0.4; the center deviation between the fifth lens 6511, the sixth lens 6512, and the fifth cemented lens 6513 is less than 0.002 mm and the surface roughness is less than Ra0.4; the fitting clearance between the first lens group 640 and the first lens chamber 620 is less than 0.03 mm; and the fitting clearance between the second lens group 650 and the second lens chamber 630 is less than 0.03 mm.

[0069] Meanwhile, the surface shape accuracy RMS of the second lens 6411, the third lens 6412, the fourth lens 6413, the fifth lens 6511, the sixth lens 6512 and the fifth cemented lens 6513 is better than λ / 60 and the surface is coated with an anti-reflection film, with a transmittance better than 98%, where λ represents the wavelength of light.

[0070] In some embodiments, combined with Figure 1 , Figure 2 and Figure 4 As shown, the first zoom system 430 and the second zoom system 510 also include a drive assembly 660, which drives the first lens chamber 620 to move relative to the lens barrel 610. This allows the first lens chamber 620 to be displaced relative to the lens barrel 610, thereby allowing the first lens chamber 620 to be displaced relative to the second lens chamber 630, ensuring high-quality imaging of the zoom imaging device 1000 and reducing the difficulty of moving the first lens chamber 620.

[0071] Optionally, combined Figure 1 , Figure 2 and Figure 4 As shown, the drive assembly 660 includes a cam 661, a guide member 662, and a guide groove 663. The guide groove 663 is disposed on the barrel wall of the lens barrel 610 and penetrates the barrel wall. The guide member 662 is fixedly connected to the outer peripheral wall of the first lens chamber 620 and passes through the guide groove 663. The guide groove 663 extends along the axial direction of the lens barrel 610. The cam 661 is rotatably connected to the outer peripheral wall of the lens barrel 610 and is located on one side of the guide groove 663. The cam 661 rotates to drive the guide member 662 to move along the extension direction of the guide groove 663. The guide groove 663 can limit and guide the movement of the guide member 662, thereby driving the first mirror chamber 620 to move along the extension direction of the guide groove 663. Since the guide groove 663 extends along the axial direction of the mirror barrel 610, the drive assembly 660 can drive the first mirror chamber 620 to move along the axial direction of the mirror barrel 610, so that the first lens group 640 and the second lens group 650 can move relative to each other. This allows the first zoom system 430 and the second zoom system 510 to continuously change the magnification while keeping the image plane position fixed. This is to enable the first zoom system 430 to achieve hyperspectral imaging and the second zoom system 510 to achieve panchromatic imaging. At the same time, it can also achieve continuous adjustment of the focal length to ensure high-quality imaging of the zoom imaging device 1000 and improve the accuracy of target inversion.

[0072] In some embodiments, the curve of cam 661 can be designed according to focusing requirements.

[0073] In some embodiments, the guide member 662 is a guide rod or a guide pin, and the guide member 662 is threadedly connected to the outer peripheral wall of the first mirror chamber 620.

[0074] In some embodiments, the drive assembly 660 further includes a drive member (not shown in the figure) for driving the cam 661 to rotate so as to drive the guide member 662 to move along the extension direction of the guide groove 663 by means of the cam 661, so as to achieve the purpose of using the drive assembly 660 to drive the first mirror chamber 620 to extend along the axial direction of the mirror barrel 610.

[0075] In some embodiments, such as Figure 2As shown, the drive assembly 660 also includes an adapter plate 664, and the cam 661 is rotatably connected to the outer peripheral wall of the lens barrel 610 through the adapter plate 664 to reduce the fixed connection of the cam 661.

[0076] In some embodiments, combined with Figure 1 , Figure 2 and Figure 4 As shown, both the first zoom system 430 and the second zoom system 510 include two sets of drive components 660. The two sets of drive components 660 are arranged along the axial direction of the lens barrel 610, and the cams 661 of the two sets of drive components 660 are respectively located at both ends of the axial direction of the lens barrel 610. One drive component 660 is used to drive the first lens chamber 620 to move towards one end of the axial direction of the lens barrel 610, and the other drive component 660 is used to drive the first lens chamber 620 to move towards the other end of the axial direction of the lens barrel 610. This allows the first lens chamber 620 to reciprocate along the axial direction of the lens barrel 610.

[0077] In some embodiments, combined with Figure 1 , Figure 4 and Figure 5 As shown, the first zoom system 430 and the second zoom system 510 also include a flexible connector 670. The outer peripheral wall of the first lens chamber 620 and the inner peripheral wall of the lens barrel 610 are spaced apart to form an installation space 680. The flexible connector 670 is disposed within the installation space 680 and is fixedly connected to both the outer peripheral wall of the first lens chamber 620 and the inner peripheral wall of the lens barrel 610. The flexible connector 670 supports the first lens chamber 620 and the lens barrel 610, stabilizing their relative positions and preventing radial swaying of the first lens chamber 620 relative to the lens barrel 610 during axial reciprocating movement. This improves the positional accuracy of the first lens chamber 620 during movement, ensuring the operational performance of the first zoom system 430 and the second zoom system 510.

[0078] In some embodiments, combined with Figure 1 , Figure 4 and Figure 5 As shown, one end of the flexible connector 670 is fixedly connected to the outer peripheral wall of the first lens chamber 620, and the other end of the flexible connector 670 is fixedly connected to the inner peripheral wall of the lens barrel 610. At least a portion of the flexible connector 670 protrudes towards the end of the lens barrel 610 to form a protrusion 671, which facilitates control of the deformation of the flexible connector 670. In other words, the flexible connector 670 can deform, so that when the drive assembly 660 drives the first lens chamber 620 to reciprocate in the axial direction of the lens barrel 610, the flexible connector 670 can avoid obstructing the movement of the first lens chamber 620, thus enabling the first lens chamber 620 to effectively reciprocate in the axial direction of the lens barrel 610 under the action of the drive assembly 660.

[0079] In summary, this application provides a protrusion 671 on the flexible connector 670 to improve the flexibility of the flexible connector 670, so that the flexible connector 670 can deform under the action of external force.

[0080] In some embodiments, a circular groove is provided on the side wall of the flexible connector 670 to further improve the flexibility of the flexible connector 670. The radius of the circular groove needs to be reasonably designed according to the thickness of the support wall of the flexible connector 670 to avoid the flexible connector 670 being damaged or lacking sufficient adjustment capability due to excessive radius. The displacement adjustment accuracy of the first zoom system 430 and the second zoom system 510 can be further improved by utilizing the micro-deformation of the flexible connector 670 and the precise control of the cam 661 curve.

[0081] Among them, the design and adjustment accuracy of the first zoom system 430 and the second zoom system 510 is better than 0.01mm.

[0082] In a specific example, one end of the flexible connector 670 is bonded to the outer peripheral wall of the first mirror chamber 620, and the other end of the flexible connector 670 is bonded to the inner peripheral wall of the mirror barrel 610.

[0083] Of course, in other embodiments, the flexible connector 670 may also be fixed to the first mirror chamber 620 and the mirror tube 610 in other ways, which will not be elaborated here.

[0084] In some embodiments, combined with Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the flexible connector 670 includes multiple flexible connectors 670, which are arranged sequentially along the axial and circumferential directions of the lens barrel 610. The multiple flexible connectors 670 cooperate to support the first lens chamber 620, maximizing the positional stability of the first lens chamber 620 and preventing radial swaying of the first lens chamber 620 relative to the lens barrel 610 during its reciprocating movement along the axial direction. This improves the positional accuracy of the first lens chamber 620 during movement, thereby ensuring the working performance of the first zoom system 430 and the second zoom system 510.

[0085] It should be noted that the sequential arrangement of multiple flexible connectors 670 along the axial direction of the lens barrel 610 means that the flexible connectors 670 are distributed one after another along the length of the lens barrel 610; the sequential arrangement of multiple flexible connectors 670 along the circumferential direction of the lens barrel 610 means that the multiple flexible connectors 670 are distributed around the barrel wall in the circumferential direction of the lens barrel 610; and the simultaneous sequential arrangement of multiple flexible connectors 670 along both the axial and circumferential directions of the lens barrel 610 combines these two dimensions, so that the multiple flexible connectors 670 are distributed in a spiral shape. The multiple flexible connectors 670 are neither arranged in a straight line (pure axial direction) nor in a circle (pure circumferential direction), but rotate around the barrel wall (circumferential direction) while extending forward (axial direction). In this way, multiple positions of the first mirror chamber 620 can be supported at the same time to maximize the positional stability of the first mirror chamber 620.

[0086] In some embodiments, the plurality of flexible connectors 670 are divided into two groups to form two flexible connection groups in the mounting space 680. The number of flexible connectors 670 in the two flexible connection groups is the same, and the two flexible connection groups are arranged sequentially along the axial direction of the lens barrel 610. The protrusions 671 of the flexible connectors 670 in each flexible connection group have the same protrusion direction, and the protrusions 671 of the flexible connectors 670 in both flexible connection groups protrude towards each other. In this way, when the first lens chamber 620 reciprocates along the axial direction of the lens barrel 610 under the action of the drive assembly 660, the displacement of the first lens chamber 620 moving forward and backward is consistent under the same driving force, which facilitates the control of the movement accuracy and movement range of the first lens chamber 620, thereby ensuring the working performance of the first zoom system 430 and the second zoom system 510.

[0087] In specific examples, combined Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the flexible connector 670 includes six flexible connectors 670 arranged sequentially along the axial and circumferential directions of the lens barrel 610. The six flexible connectors 670 are evenly distributed with the central axis of the first lens chamber 620 as the center. On the same circumferential cross section of the lens barrel 610, the difference between the angles (central angles) of any two adjacent flexible connectors 670 with respect to the central axis of the lens barrel 610 is not less than 30°. In the axial direction of the lens barrel 610, the six flexible connectors 670 have the same size and the sum of their sizes is consistent with the length of the lens barrel 610.

[0088] Among them, the flexible connector 670 at the outermost end of the axial direction is the starting end, and the three are divided into a group to keep the protrusion direction consistent and point to the axial center surface of the lens barrel 610. The six flexible connectors 670 are spirally ascending in a stepped shape along the optical axis.

[0089] In summary, this application achieves high-precision control of the first zoom system 430 and the second zoom system 510 through the cam 661 and the flexible connector 670, without the need for the complex structural design and numerous parts assembly of traditional zoom devices, and has significant advantages in system integration.

[0090] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6 As shown, the magnification system 100 includes a third mirror chamber 110 and a third lens group 120, with the third lens group 120 disposed within the third mirror chamber 110. The third mirror chamber 110 and the third lens group 120 cooperate to ensure the performance of the magnification system 100, so that the target area to be observed can be effectively magnified using the magnification system 100.

[0091] Meanwhile, by placing the third lens group 120 inside the third lens chamber 110, the third lens chamber 110 can be used to support and protect the third lens group 120, thereby ensuring the working performance of the third lens group 120.

[0092] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6 As shown, the third lens group 120 includes a seventh lens 121, an eighth lens 122, a sixth cemented lens 124, a ninth lens 123, and a seventh cemented lens 125 arranged sequentially. A twelfth spacer 126 is provided on the side of the seventh lens 121 facing away from the seventh cemented lens 125. A thirteenth spacer 127 is provided between the seventh lens 121 and the eighth lens 122. A fourteenth spacer 128 is provided between the eighth lens 122 and the sixth cemented lens 124. The sixth cemented lens 124... A fifteenth spacer 129 is provided between lens 4 and the ninth lens 123, and a sixteenth spacer 1291 is provided between the ninth lens 123 and the seventh cemented lens 125. The seventh lens 121, the eighth lens 122, the sixth cemented lens 124, the ninth lens 123 and the seventh cemented lens 125, as well as the twelfth spacer 126, the thirteenth spacer 127, the fourteenth spacer 128, the fifteenth spacer 129 and the sixteenth spacer 1291 are all fixedly connected to the inner peripheral wall of the third mirror chamber 110.

[0093] It should be noted that a single lens or a simple double lens cannot eliminate multiple aberrations simultaneously, especially in the magnification system 100. Based on this, the third lens group 120 is configured to include a seventh lens 121, an eighth lens 122, a sixth cemented lens 124, a ninth lens 123, and a seventh cemented lens 125. The above lenses are used in combination to realize the magnification function of the magnification system 100.

[0094] Meanwhile, the twelfth spacer 126, the thirteenth spacer 127, the fourteenth spacer 128, the fifteenth spacer 129, and the sixteenth spacer 1291 are used to fix the seventh lens 121, the eighth lens 122, the sixth cemented lens 124, the ninth lens 123, and the seventh cemented lens 125, so as to improve the positional stability of the seventh lens 121, the eighth lens 122, the sixth cemented lens 124, the ninth lens 123, and the seventh cemented lens 125, and to separate the seventh lens 121, the eighth lens 122, the sixth cemented lens 124, the ninth lens 123, and the seventh cemented lens 125, thereby ensuring the working performance of the third lens group 120.

[0095] In some embodiments, the curvature, surface shape, and distance between any one of the seventh lens 121, eighth lens 122, sixth cemented lens 124, ninth lens 123, and seventh cemented lens 125 can be adjusted to make the magnification system 100 usable for magnifying the target area to be observed.

[0096] In some embodiments, the twelfth spacer 126, the thirteenth spacer 127, the fourteenth spacer 128, the fifteenth spacer 129, and the sixteenth spacer 1291 all have good stiffness characteristics, corrosion resistance, and low density.

[0097] In some embodiments, in the magnification system 100, the coaxiality between the third mirror chamber 110 and the optical central axis of the magnification system 100 is less than 0.001 mm, the center deviation between the seventh lens 121, the eighth lens 122, the sixth cemented lens 124, the ninth lens 123 and the seventh cemented lens 125 is less than 0.002 mm and the surface roughness is less than Ra0.4, and the fitting gap between the third mirror chamber 110 and the third lens group 120 is less than 0.03 mm.

[0098] Meanwhile, the surface shape accuracy RMS of the seventh lens 121, the eighth lens 122, the sixth cemented lens 124, the ninth lens 123, and the seventh cemented lens 125 is better than λ / 60 and the surface is coated with an anti-reflection film, with a transmittance better than 98%, where λ represents the wavelength of light.

[0099] Optionally, combined Figure 1 , Figure 4 and Figure 6 As shown, the collimation system 200 includes a fourth mirror chamber 210 and a fourth lens group 220, with the fourth lens group 220 disposed within the fourth mirror chamber 210. The fourth mirror chamber 210 and the fourth lens group 220 work together to adjust the non-parallel outgoing light amplified by the magnification system 100 into parallel light, thereby ensuring the performance of the collimation system 200.

[0100] Meanwhile, by placing the fourth lens group 220 inside the fourth lens chamber 210, the fourth lens chamber 210 can be used to support and protect the fourth lens group 220, thereby ensuring the working performance of the fourth lens group 220.

[0101] In some embodiments, the fourth mirror chamber 210 is fixedly connected to the third mirror chamber 110 so that the fourth mirror chamber 210 and the third mirror chamber 110 can support each other, thereby improving the positional stability of the fourth mirror chamber 210 and the third mirror chamber 110. This improves the structural stability of the zoom imaging device 1000 that acquires multi-dimensional information simultaneously, thus ensuring the working performance of the zoom imaging device 1000 that acquires multi-dimensional information simultaneously.

[0102] The fourth mirror chamber 210 and the third mirror chamber 110 can be fixedly connected by means of adhesive, threaded connection or screw connection.

[0103] In some embodiments, the interface end face between the fourth mirror chamber 210 and the third mirror chamber 110 has characteristics such as low surface roughness and high flatness, and interference cannot occur at the interface between the fourth mirror chamber 210 and the third mirror chamber 110.

[0104] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6 As shown, the fourth lens group 220 includes a tenth lens 221, an eleventh lens 222, and an eighth cemented lens 223 arranged sequentially. A seventeenth spacer 224 is provided between the tenth lens 221 and the magnification system 100; an eighteenth spacer 225 is provided between the tenth lens 221 and the eleventh lens 222; and a nineteenth spacer 226 is provided between the eleventh lens 222 and the eighth cemented lens 223. The tenth lens 221, the eleventh lens 222, the eighth cemented lens 223, and the seventeenth, eighteenth, and nineteenth spacers 224, 225, and 226 are all fixedly connected to the inner peripheral wall of the fourth lens chamber 210 to ensure the performance of the collimation system 200.

[0105] At the same time, the 17th spacer 224, 18th spacer 225 and 19th spacer 226 can be used to fix and separate the 10th lens 221, 11th lens 222 and 8th cemented lens 223, thereby ensuring the working performance of the fourth lens group 220.

[0106] In some embodiments, the seventeenth spacer 224, the eighteenth spacer 225, and the nineteenth spacer 226 all have good stiffness characteristics, corrosion resistance, and low density.

[0107] In some embodiments, in the collimation system 200, the coaxiality between the fourth mirror chamber 210 and the optical central axis of the collimation system 200 is less than 0.001 mm, the center deviation between the tenth lens 221, the eleventh lens 222 and the eighth cemented lens 223 is less than 0.002 mm and the surface roughness is less than Ra0.4, and the fitting gap between the fourth mirror chamber 210 and the fourth lens group 220 is less than 0.03 mm.

[0108] Meanwhile, the surface shape accuracy RMS of the tenth lens 221, the eleventh lens 222 and the eighth cemented lens 223 are better than λ / 60 and are coated with anti-reflection coatings, with a transmittance better than 98%, where λ represents the wavelength of light.

[0109] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, the zoom imaging device 1000 for simultaneous acquisition of multi-dimensional information also includes a fifth mirror chamber 700 and a sixth mirror chamber 800. The fifth mirror chamber 700 and the sixth mirror chamber 800 are sequentially connected to the side of the fourth mirror chamber 210 opposite to the third mirror chamber 110. The beam splitting system 300 includes a dichroic beam splitter 310, which is disposed within the fifth mirror chamber 700 and located at the end of the fifth mirror chamber 700 near the fourth mirror chamber 210. A parallel plate 421 is disposed within the sixth mirror chamber 800. The dichroic beam splitter 310 is disposed within the fifth mirror chamber 700 to facilitate support and protection of the dichroic beam splitter 310, thereby ensuring its operational performance.

[0110] Meanwhile, by placing the parallel plate 421 inside the sixth mirror chamber 800, the sixth mirror chamber 800 can be used to support and protect the parallel plate 421, thereby ensuring the working performance of the parallel plate 421.

[0111] In some embodiments, the dichroic beam splitter 310 is bonded to the lens mount of the fifth mirror chamber 700 to fix the dichroic beam splitter 310 in the fifth mirror chamber 700, ensure the connection strength between the dichroic beam splitter 310 and the fifth mirror chamber 700, and reduce the connection difficulty between the dichroic beam splitter 310 and the fifth mirror chamber 700. This allows the fifth mirror chamber 700 to support and protect the dichroic beam splitter 310, thereby ensuring the working performance of the dichroic beam splitter 310.

[0112] It should be noted that the dichroic beam splitter 310 must not deform or experience stress concentration after bonding.

[0113] Optionally, the parallel plate 421 is bonded to the sixth mirror chamber 800 to fix the parallel plate 421 in the sixth mirror chamber 800, ensure the connection strength between the parallel plate 421 and the sixth mirror chamber 800, and reduce the connection difficulty between the parallel plate 421 and the sixth mirror chamber 800. This allows the sixth mirror chamber 800 to support and protect the parallel plate 421, thereby ensuring the working performance of the parallel plate 421.

[0114] In some embodiments, the fixed connection between the fifth mirror chamber 700 and the fourth mirror chamber 210, and the fixed connection between the fifth mirror chamber 700 and the sixth mirror chamber 800, can be adhesive, threaded connection, or screw connection, etc.

[0115] In some embodiments, the interface end faces of the fifth mirror chamber 700 and the fourth mirror chamber 210, as well as the interface end faces of the fifth mirror chamber 700 and the sixth mirror chamber 800, have characteristics such as low surface roughness and high flatness, and interference cannot occur at the interface between the fifth mirror chamber 700 and the fourth mirror chamber 210, or at the interface between the fifth mirror chamber 700 and the sixth mirror chamber 800.

[0116] Optionally, combined Figure 1 , Figure 4 and Figure 6 As shown, the converging system 410 includes a fifth lens group 411, which is located within the fifth mirror chamber 700 and on the side of the dichroic beam splitter 310 opposite to the fourth mirror chamber 210. This is to facilitate the use of the fifth mirror chamber 700 to support and protect the fifth lens group 411, thereby ensuring the working performance of the fifth lens group 411 and thus ensuring the working performance of the converging system 410.

[0117] In some embodiments, combined with Figure 1 , Figure 4 and Figure 6 As shown, the fifth lens group 411 includes a twelfth lens 4111 and a ninth cemented lens 4112. A twentieth spacer 4113 is provided between the twelfth lens 4111 and the ninth cemented lens 4112. A twenty-first spacer 4114 is provided on the side of the ninth cemented lens 4112 opposite to the twelfth lens 4111. The twelfth lens 4111, the ninth cemented lens 4112, the twentieth spacer 4113, and the twenty-first spacer 4114 are all fixedly connected to the inner peripheral wall of the fifth mirror chamber 700. This ensures the performance of the converging system 410, enabling the converging system 410 to effectively receive the first beam 2000 and compress and converge it to form a single real image.

[0118] At the same time, the twentieth spacer 4113 and the eleventh spacer 4114 can be used to fix and separate the twelfth lens 4111 and the ninth cemented lens 4112, thereby ensuring the working performance of the fifth lens group 411.

[0119] In some embodiments, both the twentieth spacer 4113 and the eleventh spacer 4114 have good stiffness characteristics, corrosion resistance and low density.

[0120] In some embodiments, in the converging system 410, the coaxiality between the fifth mirror chamber 700 and the optical central axis of the converging system 410 is less than 0.001 mm, the center deviation between the twelfth lens 4111 and the ninth cemented lens 4112 is less than 0.002 mm and the surface roughness is less than Ra0.4, and the fitting gap between the fifth mirror chamber 700 and the fifth lens group 411 is less than 0.03 mm.

[0121] Meanwhile, the surface shape accuracy RMS of the twelfth lens 4111 and the ninth cemented lens 4112 is better than λ / 60 and the surface is coated with an anti-reflection film, with a transmittance better than 98%, where λ represents the wavelength of light.

[0122] It should be noted that the cemented lenses mentioned above (first cemented lens 6401, second cemented lens 6402, third cemented lens 6403, fourth cemented lens 6501, fifth cemented lens 6513, sixth cemented lens 124, seventh cemented lens 125, eighth cemented lens 223 and ninth cemented lens 4112) refer to two or more lenses made of different optical materials that are tightly bonded together by optical glue (or photoresist process) to form an inseparable optical component. Cemented lenses are used to adjust focal length and aberrations.

[0123] It should also be noted that the materials of the aforementioned spacers (first spacer 6404, second spacer 6405, third spacer 6406, fourth spacer 6503, fifth spacer 6504, sixth spacer 6414, seventh spacer 6415, eighth spacer 6416, ninth spacer 6514, tenth spacer 6515, eleventh spacer 6516, twelfth spacer 126, thirteenth spacer 127, fourteenth spacer 128, fifteenth spacer 129, sixteenth spacer 1291, seventeenth spacer 224, eighteenth spacer 225, nineteenth spacer 226, twentieth spacer 4113, and twenty-first spacer 4114) and the lenses ( The first cemented lens 6401, the second cemented lens 6402, the third cemented lens 6403, the fourth cemented lens 6501, the fifth cemented lens 6513, the sixth cemented lens 124, the seventh cemented lens 125, the eighth cemented lens 223, the ninth cemented lens 4112, the first lens 6502, the second lens 6411, the third lens 6412, the fourth lens 6413, the fifth lens 6511, the sixth lens 6512, the seventh lens 121, the eighth lens 122, the ninth lens 123, the tenth lens 221, the eleventh lens 222, and the twelfth lens 4111 can all be made of aluminum or other metals.

[0124] In the description of this invention, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth", "thirteenth", "fourteenth", "fifteenth", "sixteenth", "seventeenth", "eighteenth", "nineteenth", "twentieth", and "twenty-first" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.

[0125] In some embodiments, the lenses (first cemented lens 6401, second cemented lens 6402, third cemented lens 6403, fourth cemented lens 6501, fifth cemented lens 6513, sixth cemented lens 124, seventh cemented lens 125, eighth cemented lens 223, ninth cemented lens 4112, first lens 6502, second lens 6411, third lens 6412, fourth lens 6413, fifth lens 6511, sixth lens 6512, seventh lens 121, eighth lens 122, ninth lens 123, tenth lens 221, eleventh lens 222 and twelfth lens 4111) need to have the characteristics of high surface accuracy, high transmittance, small surface roughness, good optical uniformity, low light absorption coefficient, small center deviation, good mechanical properties and no bubbles and defects in the material. Moreover, the surface shape of the lens can be a combination of hyperboloid or freeform surface, so that the aberration of the zoom imaging device 1000 that acquires multi-dimensional information simultaneously is small.

[0126] Meanwhile, the dichroic beam splitter 310 must have good flatness and parallelism, high surface accuracy, high reflectivity, high transmittance, low surface roughness, good optical uniformity, low light absorption coefficient, good mechanical properties, and no bubbles or defects inside the material.

[0127] Furthermore, the zoom imaging device 1000 that acquires multidimensional information simultaneously in this application needs to have small aberrations and small spectral shifts.

[0128] In some embodiments, the outer surface of the zoom imaging device 1000, which acquires multidimensional information simultaneously, does not have burrs, sharp corners, or other structures that could cause harm to the human body; meanwhile, all connection methods not described above can be rigidly connected by bolts.

[0129] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0130] Other configurations of the zoom imaging device 1000 that simultaneously acquires multi-dimensional information according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0131] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A zoom imaging device for simultaneous acquisition of multi-dimensional information, characterized in that, include: A magnification system (100) is used to magnify the target area to be observed; A collimation system (200) is used to receive non-parallel outgoing light amplified by the amplification system (100) and adjust the non-parallel outgoing light into parallel light; A beam splitting system (300) is located in the optical path of the parallel light. The beam splitting system (300) is used to receive the parallel light and to split the parallel light into a first beam (2000) and a second beam (3000) according to the wavelength. A first imaging system (400) is disposed on the transmission optical path of the beam splitting system (300) and includes a first zoom system (430). The first imaging system (400) is used to receive the first beam (2000) transmitted through the beam splitting system (300) and perform hyperspectral imaging. The second imaging system (500) is disposed on the reflected light path of the beam splitting system (300) and includes a second zoom system (510). The second imaging system (500) is used to receive the second beam (3000) reflected by the beam splitting system (300) and perform panchromatic imaging. The first zoom system (430) and the second zoom system (510) each include a lens barrel (610), a first lens chamber (620), a second lens chamber (630), a first lens group (640), a second lens group (650), and a drive assembly (660). The first lens group (640) is installed in the first lens chamber (620), and the second lens group (650) is installed in the second lens chamber (630). The first lens chamber (620) is movably installed in the lens barrel (610), and the second lens chamber (630) is installed on the side of the lens barrel (610) away from the beam splitting system (300). The drive assembly (660) is used to drive the first lens chamber (620) to move relative to the lens barrel (610).

2. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 1, characterized in that, The beam splitting system (300) includes a dichroic beam splitter (310) positioned at 45° relative to the parallel light and configured to separate the parallel light into a first beam (2000) and a second beam (3000) with different wavelength ranges.

3. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 1, characterized in that, The first imaging system (400) further includes: A converging system (410) is used to receive the first beam (2000) and compress and converge the first beam (2000) to form a primary real image, and the plane in which the primary real image is located is defined as the primary image plane; A relay system (420) is located at the primary image plane and includes a parallel plate (421). The parallel plate (421) is perpendicular to the first beam (2000). A filter array (422) is provided on the parallel plate (421). The filter array (422) is composed of multiple filter units (423) with different spectral responses arranged in a preset array. The filter array (422) is used to spatially divide the first beam (2000) at the primary image plane to achieve the spectral response of the target information. The first zoom system (430) is located after the relay system (420).

4. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 3, characterized in that, The parallel plate (421) is a glass plate, the filter unit (423) is made of organic material, and the filter array (422) is formed on the parallel plate (421) by photolithography.

5. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 4, characterized in that, The filter array (422) is a broadband hyperspectral filter array, which includes 16 filter units (423) with different spectral responses, and the 16 filter units (423) with different spectral responses are arranged in a 4×4 array.

6. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 1, characterized in that, The drive assembly (660) includes a cam (661), a guide (662), and a guide groove (663). The guide groove (663) is disposed on the wall of the lens barrel (610) and extends through the wall. The guide (662) is fixedly connected to the outer peripheral wall of the first lens chamber (620) and passes through the guide groove (663). The guide groove (663) extends axially along the lens barrel (610). The cam (661) is rotatably connected to the outer peripheral wall of the lens barrel (610) and located on one side of the guide groove (663). The cam (661) rotates to drive the guide (662) to move along the extension direction of the guide groove (663).

7. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 6, characterized in that, Both the first zoom system (430) and the second zoom system (510) include two sets of drive components (660). The two sets of drive components (660) are arranged along the axial direction of the lens barrel (610), and the cams (661) of the two sets of drive components (660) are respectively located at both ends of the axial direction of the lens barrel (610). One drive component (660) is used to drive the first lens chamber (620) to move toward one end of the axial direction of the lens barrel (610), and the other drive component (660) is used to drive the first lens chamber (620) to move toward the other end of the axial direction of the lens barrel (610).

8. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 6, characterized in that, The first zoom system (430) and the second zoom system (510) further include a flexible connector (670). The outer peripheral wall of the first lens chamber (620) and the inner peripheral wall of the lens barrel (610) are spaced apart to form an installation space (680). The flexible connector (670) is disposed in the installation space (680) and is fixedly connected to the outer peripheral wall of the first lens chamber (620) and the inner peripheral wall of the lens barrel (610) respectively.

9. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 8, characterized in that, One end of the flexible connector (670) is fixedly connected to the outer peripheral wall of the first mirror chamber (620), and the other end of the flexible connector (670) is fixedly connected to the inner peripheral wall of the mirror barrel (610). At least a portion of the flexible connector (670) protrudes toward the end of the mirror barrel (610) to form a protrusion (671), which facilitates control of the deformation of the flexible connector (670).

10. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 9, characterized in that, The flexible connector (670) includes a plurality of such connectors, which are arranged sequentially along the axial and circumferential directions of the lens barrel (610).

11. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 9, characterized in that, The multiple flexible connectors (670) are divided into two groups to form two flexible connection groups within the installation space (680). The number of flexible connectors (670) in the two flexible connection groups is the same. The two flexible connection groups are arranged sequentially along the axial direction of the lens barrel (610). The protrusions (671) of the flexible connectors (670) in each flexible connection group have the same protrusion direction. The protrusions (671) of the flexible connectors (670) in both flexible connection groups protrude toward each other.

12. The zoom imaging device for simultaneous acquisition of multi-dimensional information according to claim 3, characterized in that, The magnification system (100) includes a third mirror chamber (110) and a third lens group (120), wherein the third lens group (120) is disposed within the third mirror chamber (110); The collimation system (200) includes a fourth mirror chamber (210) and a fourth lens group (220), wherein the fourth lens group (220) is disposed within the fourth mirror chamber (210); The zoom imaging device further includes a fifth mirror chamber (700) and a sixth mirror chamber (800), which are connected sequentially to the side of the fourth mirror chamber (210) away from the third mirror chamber (110). The beam splitting system (300) includes a dichroic beam splitter (310), which is located in the fifth mirror chamber (700) and at one end of the fifth mirror chamber (700) near the fourth mirror chamber (210). The parallel plate (421) is located in the sixth mirror chamber (800). The converging system (410) includes a fifth lens group (411), which is located in the fifth mirror chamber (700) and on the side of the dichroic beam splitter (310) opposite to the fourth mirror chamber (210).

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