Image acquisition system, examination apparatus, and endoscopic examination device

Abstract

The embodiments of the present application relate to the technical field of medical instruments. Provided are an image acquisition system, an examination apparatus, and an endoscopic examination device. The image acquisition system comprises: a light-splitting member, which is used for dividing light emitted to the light-splitting member into a plurality of beams of light in different directions; and a plurality of cameras, which are arranged corresponding to the plurality of beams of light formed by means of the light-splitting member performing division, wherein each camera is configured to image one beam of light corresponding thereto, and the magnification ratio of at least some of the plurality of cameras is different. By means of the image acquisition system provided in the embodiments of the present application, an image acquired at an examination position can have different magnification ratios, such that the selectable range of the magnification ratios is increased, thereby facilitating a comprehensive examination and / or treatment carried out on the examination position.

Description

Image acquisition system, inspection device, and endoscopic inspection equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 14, 2023, with application number 202310709590.4 and application name “Inspection Device and Endoscopic Inspection Equipment”, the entire contents of which are incorporated by reference into this application.

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on March 27, 2024, with application number 202420614520.0 and application name “Camera assembly and inspection device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of medical device technology, and more specifically, to an image acquisition system, an inspection device, and an endoscopic inspection device. Background Art

[0004] In the medical field, examination devices are commonly used to examine the human body. These devices typically include an image acquisition system for receiving light and forming images. In related art, this image acquisition system typically includes a camera that captures an image of the examination site, allowing operators to inspect and / or treat the site. However, the magnification of the images captured by these image acquisition systems is limited, hindering comprehensive inspection and / or treatment of the site.

[0005] Summary of the Invention

[0006] The purpose of the present application is to provide an image acquisition system, an inspection device and an endoscopic inspection equipment to solve the technical problem that the magnification of the image acquired by the image acquisition system in the related art is limited for the inspection position, which is not conducive to comprehensive inspection and / or treatment of the inspection position.

[0007] In a first aspect, the present application discloses an image acquisition system, comprising:

[0008] A beam splitter, used to split the light incident on the beam splitter into multiple beams of light with different directions;

[0009] A plurality of cameras are arranged corresponding to the plurality of light beams split by the light splitting element, each of the cameras is used to image a corresponding light beam, and at least some of the plurality of cameras have different magnifications.

[0010] The image acquisition system of an embodiment of the present application is provided with a beam splitter and multiple cameras. The beam splitter can split incident light into multiple beams with different directions. The multiple cameras are arranged corresponding to the multiple beams of light split by the beam splitter, with each camera being configured to image its corresponding beam of light. Because at least some of the multiple cameras have different magnifications, the image acquisition system can capture images of the examination location with different magnifications, increasing the range of magnification options and facilitating comprehensive examination and / or treatment of the examination location.

[0011] In the second aspect, the present application discloses an inspection device, including a shell and the above-mentioned image acquisition system, wherein the shell has a accommodating cavity inside, and the first end of the shell is provided with a light-transmitting window connected to the accommodating cavity; the image acquisition system is arranged in the accommodating cavity, and the light-incoming side of the spectrometer of the image acquisition system faces the light-transmitting window.

[0012] Since the inspection device of the embodiment of the present application includes the above-mentioned image acquisition system, the inspection device also has the advantages of the above-mentioned image acquisition system, which will not be described in detail.

[0013] In a third aspect, the present application discloses an endoscopic inspection device, comprising the above-mentioned inspection apparatus.

[0014] Since the endoscopic inspection equipment of the embodiment of the present application includes the above-mentioned inspection device, the endoscopic inspection equipment also has the advantages of the above-mentioned inspection device, which will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic diagram of the three-dimensional structure of an endoscopic inspection device in some possible implementations of the embodiments of the present application;

[0016] FIG2 is a schematic diagram of the three-dimensional structure of an endoscopic inspection device in some other possible implementations of the embodiment of the present application;

[0017] FIG3 is a schematic diagram of the three-dimensional structure of an endoscopic inspection device in some other possible implementations of the embodiment of the present application;

[0018] FIG4 is a schematic diagram of a first-view stereoscopic structure of an inspection device in some possible implementations of the embodiments of the present application;

[0019] FIG5 is a schematic diagram of the three-dimensional structure of the inspection device in FIG4 from a second perspective;

[0020] FIG6 is a schematic diagram of the three-dimensional structure of an inspection device in some other possible implementations of the embodiment of the present application;

[0021] FIG7 is a schematic diagram of the three-dimensional structure of an inspection device in some other possible implementations of the embodiment of the present application;

[0022] FIG8 is a schematic diagram of the three-dimensional structure of the first housing in FIG7 from a third perspective;

[0023] FIG9 is a schematic diagram of the three-dimensional structure of the first housing in FIG7 from a fourth perspective;

[0024] FIG10 is a schematic diagram of the third perspective structure of the second housing in FIG7 from a fifth perspective;

[0025] FIG11 is a schematic diagram of the third perspective structure of the second housing in FIG7 from a sixth perspective;

[0026] FIG12 is a schematic diagram of the structure of the inspection device when the housing is hidden in some possible implementations of the embodiment of the present application;

[0027] FIG13 is a side view of the structure of the inspection device in FIG12 when the mounting frame is hidden;

[0028] FIG14 is a schematic structural diagram of the image acquisition component in FIG13;

[0029] FIG15 is a schematic diagram of the optical path of the image acquisition component in FIG14;

[0030] FIG16 is a schematic diagram of the three-dimensional structure of the mounting frame in FIG12 from a seventh viewing angle;

[0031] FIG17 is a schematic diagram of the three-dimensional structure of the mounting frame in FIG12 from an eighth viewing angle;

[0032] FIG18 is a schematic diagram of the three-dimensional structure of the mounting frame in FIG12 from a ninth viewing angle;

[0033] FIG19 is a schematic diagram of the exploded structure of the inspection device in FIG7 ;

[0034] FIG20 is a schematic diagram of the structure of the inspection device when the housing is hidden in other possible implementations of the embodiment of the present application;

[0035] FIG21 is a schematic side view of the structure of the inspection device in FIG20;

[0036] FIG22 is a side view of the structure of FIG21 when the inspection device is hidden in the mounting frame;

[0037] FIG23 is a schematic diagram of the structure and optical path of the image acquisition component in FIG22;

[0038] FIG24 is a schematic diagram of the structure and optical path of an image acquisition component in some possible implementations of the embodiments of the present application;

[0039] FIG25 is a schematic diagram of the structure and optical path of an image acquisition component in other possible implementations of the embodiment of the present application;

[0040] FIG26 is a schematic diagram of the structure of the image acquisition component in some other possible implementations of the embodiments of the present application. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] An embodiment of the present application provides an endoscopic inspection device, which includes an inspection device.

[0043] The endoscopic examination device can inspect and / or treat the first inspection location. In some possible implementations of the present application, referring to FIG1 , the endoscopic examination device can further include an endoscope 20. The inspection device 10 can be installed within the endoscope 20 and electrically connected to the endoscope 20 to inspect, treat, etc. the first inspection location. In other words, the inspection device 10 can be used in combination with the endoscope 20. The first inspection location can be a human body cavity, such as the uterine cavity, nasal cavity, and abdominal cavity.

[0044] The endoscope 20 refers to a visual medical device used to inspect and / or treat human cavities. For example, the endoscope 20 can be a hysteroscope, a nasal cavity scope or a laparoscope. Referring to Figure 1, the endoscope 20 may include a first operating handle 600, a mirror tube 610 and an endoscope circuit board. The first operating handle 600 has a first accommodating cavity with an open bottom end, and the endoscope circuit board is installed in the first accommodating cavity. The mirror tube 610 is connected to the first operating handle 600. The inspection device 10 can be installed in the first accommodating cavity via the bottom end of the first operating handle 600. For example, the inspection device 10 can be inserted into the first accommodating cavity or can be screwed into the first accommodating cavity. The inspection device 10 is electrically connected to the endoscope circuit board.

[0045] When inspecting and treating the first inspection position, the mirror tube 610 can be inserted into the first inspection position. The mirror tube 610 can obtain an image of the first inspection position and transmit the image to the inspection device 10 through the endoscope circuit board, thereby inspecting and / or treating the first inspection position.

[0046] The endoscopic examination device can also inspect and / or treat a second inspection location. The second inspection location can be an open human cavity, such as the mouth, or an exposed human surface, such as the skin. Exemplarily, the inspection device 10 can be used alone. For example, when inspecting and / or treating the oral cavity, the inspection device 10 can be inserted into the open mouth. The inspection device 10 can capture and process images of the oral cavity, thereby performing an inspection of the oral cavity. When inspecting the skin, the inspection device 10 can be placed against the skin to perform inspection and / or treatment of the skin.

[0047] The second inspection location may also be a human body cavity with a closed opening, such as the vagina. Referring to Figures 2 and 3 , in some possible implementations of the present invention, the endoscopic inspection apparatus may also include a dilator 30, and the inspection device 10 may be installed within the dilator 30. For example, the inspection device 10 may be inserted into the dilator 30 or screwed into the dilator 30. In other words, the inspection device 10 may also be used in combination with the dilator 30.

[0048] The dilator 30 is a device that can be inserted into a closed-opening human body cavity, such as the vagina, to expand the space within the cavity, thereby facilitating inspection. For example, referring to Figures 2 and 3 , the dilator 30 may include a second operating handle 700, a lower leaf 710, and an upper leaf 720. The second operating handle 700 has a second accommodating chamber with an open bottom end and a viewing window at its top end. The lower leaf 710 is located below the viewing window and is connected to the second operating handle 700. The upper leaf 720 is located above the viewing window and is rotatably connected to the second operating handle 700. The upper leaf 720 can rotate relative to the second operating handle 700 to open or close with the lower leaf 710. When the upper leaf 720 and the lower leaf 710 are open, the viewing window is exposed. When the upper leaf 720 and the lower leaf 710 are closed, the viewing window is blocked. The inspection device 10 can be mounted within the second accommodating chamber via the bottom end of the second operating handle 700. For example, the inspection device 10 can be inserted into the second accommodating cavity, or can be screwed into the second accommodating cavity.

[0049] When inspecting a second inspection location, such as a human body cavity like the vagina, the upper leaf 720 can be controlled to rotate relative to the second operating handle 700, thereby closing with the lower leaf 710. The closed upper leaf 720 and lower leaf 710 are inserted into the second inspection location. The upper leaf 720 is then controlled to rotate in the opposite direction relative to the second operating handle 700, thereby opening with the lower leaf 710, exposing a viewing window and expanding the space at the second inspection location. The inspection device 10 can capture an image of the second inspection location through the exposed viewing window, thereby inspecting the second inspection location.

[0050] 4, 5, 6 and 7, the inspection device 10 may include a housing 100 and an image acquisition system. The interior of the housing 100 may have a accommodating cavity. The housing 100 may be provided with a light-transmitting window 121 connected to the accommodating cavity. The image acquisition system may be arranged in the accommodating cavity, and the image acquisition system is used for imaging. Light outside the housing 100 may enter the image acquisition system in the accommodating cavity through the light-transmitting window 121 for imaging. When using the inspection device 10 of an embodiment of the present application, the housing 100 can protect the image acquisition system, and light can pass through the light-transmitting window 121 on the housing 100 and be emitted to the image acquisition system.

[0051] In some possible implementations of the present invention, the inspection device 10 may further include a mainboard and a key assembly 300. The mainboard 200 may be located within the housing chamber and connected to the housing 100. A portion of the key assembly 300 may be located within the housing chamber and on one side of the mainboard 200. The key assembly 300 may be electrically connected to the mainboard. An operator may press the key assembly 300 to send a control signal to the mainboard. In response to the control signal, the mainboard controls the image acquisition system to facilitate the operator's use of the inspection device 10.

[0052] The housing 100 is used to accommodate other components such as the image acquisition system of the inspection device 10. Continuing to refer to Figures 8, 9, 10 and 11, along the overall extension direction of the housing 100, the housing 100 may have a first end and a second end that are opposite. For example, the second end of the housing 100 may be the end facing away from the endoscope 20 and the dilator 30. A light-transmitting window 121 may be provided at the first end of the housing 100. For example, as shown in Figures 9 and 10, a light-transmitting window 121 may be provided at the first end of the second housing 120, and external light may enter the accommodating cavity through the light-transmitting window 121 on the second housing 120. The image acquisition system 400 may obtain images outside the housing 100 through the light-transmitting window 121.

[0053] For example, the light-transmitting window 121 may be provided with a light-transmitting protective sheet 122. The light-transmitting protective sheet 122 can protect the image acquisition system 400 from being contaminated by liquids, particles, and other impurities. The protective sheet 122 may also be provided with an anti-reflection film layer to increase the amount of light entering the image acquisition system 400, thereby improving the quality of images captured by the image acquisition system 400.

[0054] A hydrophobic coating may also be provided on the side of the protective sheet 122 facing away from the accommodating cavity to prevent liquids and the like from adhering to the light-transmitting protective sheet 122 and reducing the quality of images acquired by the image acquisition system 400 .

[0055] A gripping portion 123 may be provided at the second end of the housing 100 . The gripping portion 123 may be gripped by an operator, thereby improving convenience when operating the inspection device 10 .

[0056] The second end of the housing 100 may also be provided with a line inlet, which can facilitate the connection of the inspection device 10 with other equipment.

[0057] For example, the housing 100 may include a detachably connected first housing 110 and a second housing 120, which may enclose a receiving cavity. In other words, the housing 100 may be a split structure. This arrangement facilitates installation of other components of the inspection device 10 within the housing 100, improving ease of assembly and adjustment of the inspection device 10.

[0058] For example, the first shell 110 and the second shell 120 may both be semi-cylindrical structures, and the two semi-cylindrical structures may be interlocked to form a shell 100 having an accommodating cavity.

[0059] 8 , the inner wall of the first housing 110 may be provided with a first connecting portion 111, and the first connecting portion 111 is used to connect the key assembly 300. For example, the first connecting portion 111 may be a columnar structure, and the first connecting portion 111 may be provided with a threaded hole.

[0060] A key window 112 may be provided on the side of the housing 100. For example, the key window 112 may be provided on the side of the first housing 110. The key window 112 may be opposite the key assembly 300, and a portion of the key assembly 300 may extend out of the key window 112, allowing an operator to operate the key assembly 300 from outside the first housing 110, thereby improving the convenience of operating the key assembly 300.

[0061] There can be multiple key windows 112, which can be spaced apart on the side of the first housing 110. Portions of the key assembly 300 can extend from each of the key windows 112, thereby dividing the key assembly 300 into different key operation areas. For example, pressing different key operation areas can activate different functions of the inspection device 10. This arrangement prevents the operator from accidentally triggering other functions when pressing the key assembly 300 to activate a specific function, thereby improving the convenience of operating the inspection device 10.

[0062] There can be multiple first connection parts 111 , and the multiple first connection parts 111 can be arranged around the key window 112 to fix the key assembly 300 at multiple points, thereby improving the connection strength between the key assembly 300 and the housing 100 .

[0063] A first positioning portion 113 may also be provided in the first housing 110 , and the first positioning portion 113 is used to position the image acquisition system 400 .

[0064] A third positioning portion 114 may also be provided in the first housing 110 , and the third positioning portion 114 is used to position the image acquisition system 400 .

[0065] A second connection portion 115 may also be provided within the first housing 110. The second connection portion 115 is used to connect to the image acquisition system 400. For example, the second connection portion 115 may be a columnar structure and may be provided with a threaded hole. Multiple second connection portions 115 may be provided, and multiple second connection portions 115 may be arranged at intervals to secure the image acquisition system 400 at multiple points, thereby improving the connection strength between the image acquisition system 400 and the housing 100.

[0066] For example, a first connecting groove 130 may be provided on a side of one of the first shell 110 and the second shell 120 facing the other. The other of the first shell 110 and the second shell 120 may be provided with a first connecting protrusion 140. For example, as shown in Figures 8 to 11, the first connecting protrusion 140 may be provided on a side of the first shell 110 facing the second shell 120. The first connecting groove 130 may be provided on a side of the second shell 120 facing the first shell 110. The first connecting protrusion 140 is inserted into the first connecting groove 130. The first shell 110 and the second shell 120 are detachably connected by the first connecting protrusion 140 and the first connecting groove 130 being inserted into each other.

[0067] In some possible implementations of the embodiments of the present application, the housing 100 may further include a sealant, which is located within the first connection groove 130 and between the first connection groove 130 and the first connection protrusion 140. The sealant can seal the gap between the first connection groove 130 and the first connection protrusion 140 to achieve a sealed connection between the first housing 110 and the second housing 120, thereby preventing impurities such as liquids and particles outside the housing 100 from entering the housing 100 and affecting the function of the inspection device 10.

[0068] For example, a second connecting groove 150 may be provided on a side of the second end of the first housing 110 or the second end of the second housing 120 that faces the other. A second connecting protrusion 160 may be provided on the other of the second ends of the first housing 110 and the second end of the second housing 120. Both the second ends of the first housing 110 and the second ends of the second housing 120 face away from the endoscope 20 or the dilator 30. For example, as shown in Figures 8 and 10 , the second connecting groove 150 may be provided on the second end of the second housing 120, and the second connecting protrusion 160 may be provided on the second end of the first housing 110. The second connecting protrusion 160 may be inserted into the second connecting groove 150. For example, the bottom of the second connecting groove 150 may be provided with a threaded hole, and the second connecting protrusion 160 may be provided with a connecting through-hole. When the second connecting protrusion 160 is located in the second connecting groove 150, the connecting through-hole and the threaded hole are opposite. The second connecting protrusion 160 may be connected to the second connecting groove 150 via a connecting bolt that passes through the connecting through-hole and screws into the threaded hole. The first shell 110 and the second shell 120 are detachably connected by the second connecting groove 150 and the second connecting protrusion 160 which are plugged into each other.

[0069] The housing 100 may also be provided with a connecting tube 170. For example, the connecting tube 170 may be connected to the second end of the first housing 110. The connecting tube 170 may be in communication with the accommodating cavity of the housing 100. The connecting tube 170 may be a line inlet. The inspection device 10 may be provided with an electrical connection line for connecting to external devices such as a power supply, a display, a computer, and a surgical instrument. The electrical connection line may be passed through the connecting tube 170 to be electrically connected to the components in the accommodating cavity. For example, the image acquisition system may include a functional circuit board 410. The functional circuit board 410 may include a third connection terminal 411. The third connection terminal 411 may be electrically connected to an external device via an electrical connection line passed through the connecting tube 170.

[0070] 12, 13, 14, and 15, and 21, 22, 23, and 24, the image acquisition system 400 may include an image acquisition component 430, which may be installed in the housing 100. The image acquisition component 430 may be configured to acquire an image outside the housing 100 through the light-transmitting window 121.

[0071] In some possible implementations of the embodiments of the present application, the image acquisition component 430 may include an imaging camera, which may be installed in the mounting bracket 440, with the light incident surface of the imaging camera facing the light-transmitting window 121 to receive external light for imaging.

[0072] In some other possible implementations of the embodiments of the present application, the image acquisition component 430 may include a spectrometer. The spectrometer may be used to split the light directed toward the spectrometer into multiple beams of light with different directions. Exemplarily, the spectrometer may be provided with a light inlet side, and the light inlet side may be opposite to the light-transmitting window 121. Light outside the housing 100 may enter the spectrometer from the light inlet side through the light-transmitting window 121 and be split into multiple beams of light. The spectrometer may also be provided with a first light-emitting surface, and one of the multiple beams of light may be directed toward the first light-emitting surface. The spectrometer may also be provided with a second light-emitting surface, and the second light-emitting surface and the first light-emitting surface may have different orientations, and another beam of light among the multiple beams of light may be directed toward the second light-emitting surface. Exemplarily, the first light-emitting surface and the second light-emitting surface may be perpendicular to each other, and the spectrometer may split the light into two beams of light that are perpendicular to each other.

[0073] It is understandable that the beam splitter may also have other light emitting surfaces, and other beams of light in the multiple beams of light may be emitted toward other light emitting surfaces, which will not be described in detail in the embodiments of the present application.

[0074] In some possible implementations of the embodiments of the present application, as shown in Figures 14, 15, 23 and 24, the beam splitter may be a beam splitter prism 431. The beam splitter prism 431 may have a first light incident surface 4311 opposite to the light-transmitting window 121, a first light exit surface 4313 opposite to the first light incident surface 4311, a second light exit surface 4314 adjacent to the first light incident surface 4311, and a beam splitter surface 4312 located between the first light incident surface 4311 and the first light exit surface 4313. The first light incident surface 4311 may be the light incident side of the beam splitter. The first light exit surface 4313 may be the second light exit surface of the beam splitter, and the second light exit surface 4314 may be the first light exit surface of the beam splitter.

[0075] The light entering through the light-transmitting window 121 is emitted toward the first light incident surface 4311 and is divided into a first light path A and a second light path B at the light splitting surface 4312. The first light path A is emitted through the first light exit surface 4313, and the second light path B is emitted through the second light exit surface 4314.

[0076] Exemplarily, the beam splitter 431 may include two right-angle prisms. The oblique surfaces of the two right-angle prisms may be aligned to form a beam splitter surface 4312. The beam splitter surface 4312 is used to split the light incident on the beam splitter into two beams in different directions, for example, forming the first light path A and the second light path B described above. One right-angle surface of one of the right-angle prisms may be the first light incident surface 4311, and the other right-angle surface of the right-angle prism may be the second light exit surface 4314. The aligned oblique surfaces are the beam splitter surface 4312. One right-angle surface of the other right-angle prism may be the first light exit surface 4313.

[0077] For example, the ratio of the luminous flux between the first optical path A and the second optical path B can be 1:1 or 1:2. It is understandable that the ratio of the luminous flux between the first optical path A and the second optical path B can also be other values, which will not be described in detail in the embodiments of the present application.

[0078] It is understandable that the spectrometer may also be other optical devices with spectrometer functions such as gratings, which will not be described in detail in the embodiments of the present application.

[0079] The image acquisition component may also include multiple cameras. The multiple cameras may be arranged corresponding to the multiple beams of light divided by the spectrometer. Each camera is used to image a corresponding beam of light. The magnification of at least some of the multiple cameras is different. By providing a spectrometer and multiple cameras, the spectrometer can divide the light incident therein into multiple beams of light with different directions. The multiple cameras are arranged corresponding to the multiple beams of light divided by the spectrometer, and each camera is used to image a corresponding beam of light. Since the magnification of at least some of the multiple cameras is different, the image acquired by the image acquisition system for the inspection position can have different magnifications, which increases the selectable range of magnifications and is conducive to comprehensive inspection and / or treatment of the inspection position.

[0080] For example, as shown in Figures 14, 15, 23, and 24, the multiple cameras may include a first camera 432 and a second camera 433. The first camera 432 may face the second light exit surface. For example, the first camera 432 may be located on the first optical path A and face the first light exit surface 4313. The second camera 433 may face the first light exit surface. For example, the second camera 433 may be located on the second optical path B and face the second light exit surface 4314.

[0081] For example, first camera 432 is configured to form an image having a first magnification. Second camera 433 is configured to form an image having a second magnification. For example, the second magnification can be greater than the first magnification. Images of different magnifications can be acquired by first camera 432 and second camera 433, allowing an operator to select an image having an appropriate magnification for observation, facilitating examination and / or treatment.

[0082] For example, the focal lengths of the first camera 432 and the second camera 433 may be different. The focal length of the first camera 432 may be greater than that of the second camera 433, so that the first magnification of the first camera 432 can be greater than the second magnification of the second camera 433. For example, the focal length of the first camera 432 may be 12-16 mm, and the focal length of the second camera 433 may be 3.6-4.7 mm. Alternatively, the focal length of the second camera 433 may be greater than that of the first camera 432.

[0083] For example, the fields of view of the first camera 432 and the second camera 433 may differ. The field of view of the first camera 432 may be smaller than that of the second camera 433. For example, the field of view of the first camera 432 may be 40×30 mm, and the field of view of the second camera 433 may be 80×60 mm. The first camera 432 and the second camera 433 can acquire images with different fields of view, allowing the operator to select an image with an appropriate field of view for observation, facilitating examination and / or treatment. Alternatively, the field of view of the second camera 433 may be smaller than that of the first camera 432.

[0084] In addition, the number of pixels of the first camera 432 and the second camera 433 may also be different, which will not be described in detail in this embodiment of the application.

[0085] The image acquisition component 430 may also include a guide member, and the light guide member may have a light input surface, which faces the first light output surface. The light emitted to the first light output surface may be configured to pass through the first light output surface and the light input surface in sequence. After the light passes through the first light output surface and the light input surface in sequence, it can enter the interior of the light guide member and be emitted from the interior of the light guide member. The second camera 433 may be facing the light guide member and be used to receive the light guided by the light guide member. The light guide member can guide the propagation of light and change the propagation direction of light. After the light is emitted from the light guide member, the second camera 433 can receive the light to form an image. By providing a light guide member, the layout of the components in the inspection device 10 can be optimized, which is conducive to the miniaturization of the inspection device 10.

[0086] The light guide may also be provided with a reflective surface and an exit surface. The reflective surface may be located between the exit surface and the light incident surface, and the second camera may be oriented toward the exit surface. Light directed toward the first light incident surface may be configured to sequentially pass through the first light incident surface, the light incident surface, the reflective surface, the exit surface, and the second camera 433. By providing the reflective surface within the light guide, the direction of the light can be changed, so that the light incident upon the exit surface is received by the second camera 433, thereby forming an image. Furthermore, the reflective surface can fold the optical path, facilitating miniaturization of the image acquisition assembly.

[0087] In some possible implementations of the present invention, referring to Figures 14, 15, 23, and 24, the light guide may be a turning prism 434. The turning prism 434 may be located on the second optical path B and between the beam splitter prism 431 and the second camera 433. The turning prism 434 can change the direction of the second optical path B and fold the second optical path B to shorten the distance between the beam splitter prism 431 and the second camera 433, thereby reducing the space occupied by the image acquisition assembly 430 and facilitating the miniaturization of the inspection device 10.

[0088] Exemplarily, the turning prism 434 may include a second light incident surface 4341, a first light reflecting surface 4342, a second light reflecting surface 4343, and a third light exiting surface 4344. The second light incident surface 4341 may be opposite the second light exiting surface 4314. The second light incident surface 4341 may be a light input surface of the light guide. The first light reflecting surface 4342 may be opposite the second light incident surface 4341. The second light reflecting surface 4343 is opposite the first light reflecting surface 4342 and adjacent to the second light incident surface 4341. The first light reflecting surface 4342 and the second light reflecting surface 4343 may be light reflecting surfaces of the light guide. The third light exiting surface 4344 may be located between the first light reflecting surface 4342 and the second light reflecting surface 4343. The third light exiting surface 4344 may be an exiting surface of the light guide.

[0089] The light emitted from the second light exit surface 4314 of the dichroic prism 431 enters the second light incident surface 4341 and is then reflected by the first light reflecting surface 4342 . The light is reflected to the second light reflecting surface 4343 , and then reflected by the second light reflecting surface 4343 , and is emitted from the third light exit surface 4344 and enters the second camera 433 .

[0090] Referring to FIG. 15 , the steering angle α of the steering prism 434 can be between 25° and 30°. For example, the steering angle α can be 25°, 26°, 27°, 28°, 29°, or 30°. The steering angle α refers to the angle between the light incident on the steering prism 434 and the light emitted from the steering prism 434. It is understood that the steering prism 434 can also be a steering prism of other forms, and the steering angles of other forms of steering prisms can also be of other values. This embodiment of the present application will not be further described in detail.

[0091] In some possible implementations of the present invention, a gap may be provided between the first light-emitting surface of the beam splitter and the light-incoming surface of the light guide. For example, as shown in Figures 14 and 15 , a gap may be provided between the second light-emitting surface 4314 of the beam splitter prism 431 and the second light-incident surface 4341 of the turning prism 434.

[0092] In other possible implementations of the embodiments of the present application, a light-preventing reflection structure may be provided between the beam splitter and the light guide, so that light directed toward the first light-emitting surface passes through the light-preventing reflection structure and enters the light-incoming surface. The beam splitter and the light guide are optical components. When light is directed from the beam splitter to the light guide, the presence of the light-preventing reflection structure can reduce or even prevent reflected light between the beam splitter and the light guide. This can reduce or even prevent the impact of reflected light on the imaging light used for imaging, thereby ensuring the imaging quality of the image captured by the image acquisition component 430.

[0093] Exemplarily, the light-incoming surface can be fitted with at least a portion of the first light-emitting surface to form an anti-light-reflection structure. For example, as shown in FIG23 , the second light-emitting surface 4314 of the beam splitter 431 and the second light-incident surface 4341 of the steering prism 434 are at least partially fitted to form an anti-light-reflection structure. When the light-incoming surface is fitted with the first light-emitting surface, there is no gap between the light-incoming surface and the first light-emitting surface, and the light directed to the first light-emitting surface passes directly through the fitting surface; thus, there is minimal reflected light between the beam splitter and the light guide, which can reduce or even eliminate the situation where reflected light affects the imaging light, thereby ensuring imaging quality. With such an arrangement, by fitting the light-incoming surface with the first light-emitting surface, the formation of the anti-light-reflection structure is facilitated, and it is ensured that reflected light is not formed between the beam splitter and the light guide.

[0094] For example, the light-incoming surface can be aligned with the entire first light-emitting surface, ensuring that all light directed toward the first light-emitting surface can enter the light guide. For example, the second light-incoming surface 4341 can be aligned with the second light-emitting surface 4314, ensuring that all light directed toward the second light-emitting surface 4314 can enter the turning prism 434.

[0095] In addition, on the basis of directly bonding the light-input surface and the first light-output surface to form an anti-light-reflection structure, the light-splitting element and the light-guiding element can also be integrated at the first light-output surface. For example, as shown in Figure 23, the light-splitting prism 431 and the turning prism 434 can be integrated at the second light-output surface 4314 to form an anti-light-reflection structure.

[0096] Alternatively, with reference to FIG24 , the image acquisition component 430 further includes a light-transmitting member 435, which can be located between the light-input surface and the first light-output surface. Along the relative directions of the light-input surface and the first light-output surface, the two sides of the light-transmitting member 435 are respectively fitted with the light-input surface and the first light-output surface to form an anti-light reflection structure. As shown in FIG24 , one side of the light-transmitting member 435 can be fitted with the second light-output surface 4314, and the other side of the light-transmitting member 435 can be fitted with the second light-incident surface 4341. The light-transmitting member 435 can fill the gap between the light-input surface and the first light-output surface, and the light directed toward the first light-output surface can enter the light guide member through the light-transmitting member 435. Compared to filling the gap between the light-incoming surface and the first light-emitting surface with air, when the gap is filled with the light-transmitting member 435, the refractive index of the light-transmitting member 435 is closer to that of the beam splitter and the light guide. The areas where the light-transmitting member 435 abuts the light-incoming surface and the first light-emitting surface are less likely to reflect light. This arrangement, by providing the light-transmitting member 435, reduces light reflections at the light-incoming surface and the first light-emitting surface, thereby reducing the impact of reflected light on the imaging light, thereby ensuring imaging quality.

[0097] In addition, compared to directly bonding the light-incoming surface and the first light-emitting surface to form an anti-light-reflection structure, using the light-transmitting member 435 to fill the gap to form an anti-light-reflection structure can be applied to situations where it is not convenient to directly bond the light-incoming surface and the first light-emitting surface during installation. For example, the light-transmitting member 435 can be translucent glass.

[0098] Exemplarily, the difference in refractive index between the beam splitter and the light guide can be less than a first set value. For example, the difference in refractive index between the beam splitter prism 431 and the turning prism 434 can be less than the first set value. If the difference in refractive index between the beam splitter and the light guide is greater than or equal to the first set value, the difference in refractive index between the beam splitter and the light guide is too large. When light is directed from the beam splitter to the light guide, the direction of the light is deflected at a large angle, causing some light to be unable to be received by the second camera 433, thereby reducing image quality. Setting the difference in refractive index between the beam splitter and the light guide to be less than the first set value can minimize the large-angle deflection of light, thereby ensuring that as much light as possible is received by the second camera 433, thereby improving image quality. Exemplarily, the second preset value can be one-tenth of the smaller of the refractive indices of the beam splitter and the light guide, thereby ensuring image quality.

[0099] Exemplarily, when the light-transmitting element 435 is interposed between the light-entering surface and the first light-emitting surface, the maximum difference in the refractive indices of the light splitter, the light guide, and the light-transmitting element 435 can be less than a second set value. If the maximum difference in the refractive indices of the three is greater than or equal to the second set value, the maximum difference in the refractive indices of the three is too large. When light travels from the light splitter toward the light-transmitting element 435 and the light guide, the direction of the light will be deflected at a large angle, causing some light to be unable to be received by the second camera 433, thereby reducing image quality. Setting the maximum difference in the refractive indices of the three to less than the second set value minimizes large-angle deflection of the direction of the light, allowing the second camera 433 to receive as much light as possible, thereby ensuring image quality. Exemplarily, among the refractive indices of the light splitter, the light guide, and the light-transmitting element 435, the second set value can be one-tenth of the smallest of the refractive indices.

[0100] For example, the refractive index of the light-transmitting element 435 may be between the refractive indexes of the light-splitting element 110 and the light-guiding element 120. For example, when the refractive index of the light-splitting element 110 is greater than that of the light-guiding element 120, the refractive index of the light-transmitting element 435 is greater than that of the light-guiding element 120 but less than that of the light-splitting element 110. As a result, the refractive indices of the light-splitting element 110, the light-transmitting element 435, and the light-guiding element 120 gradually decrease, and light is less likely to be reflected when passing through the light-splitting element 110, the light-transmitting element 435, and the light-guiding element 120.

[0101] For example, as shown in Figures 23 and 24, the beam splitter may be a beam splitter prism 431, the light guide may be a turning prism 434, and the light transmissive member 435 may also be a prism. The refractive indices of the beam splitter, light guide, and light transmissive member 435 may be consistent, thereby ensuring that light is not deflected when passing through the beam splitter, light guide, and light transmissive member 435.

[0102] In some possible implementations of the present invention, the position of the first camera 432 relative to the beam splitter is adjustable. This configuration allows the first camera 432 to be focused by adjusting the relative position between the first camera 432 and the beam splitter, thereby improving the quality of the image captured by the first camera 432.

[0103] For example, the image acquisition system may further include a first voice coil motor (not shown in the figures), to which the first camera 432 may be connected. The first voice coil motor is configured to drive the first camera 432 relative to the beam splitter. The first voice coil motor has the advantages of a simple structure, ease of control, and high movement precision, facilitating adjustment of the position of the first camera 432 relative to the beam splitter to obtain high-quality images.

[0104] Alternatively, the image acquisition system may further include a screw assembly, which may be connected to the first camera 432 and used to adjust the position of the first camera 432. The specific structure of the screw assembly will be described in detail later.

[0105] In some other possible implementations of the present invention, the position of the second camera 433 relative to the beam splitter is adjustable. By adjusting the relative position between the second camera 433 and the light guide, the second camera 433 can be focused, thereby improving the quality of the image formed by the second camera 433.

[0106] For example, as shown in Figures 23 and 24 , the image acquisition assembly may further include a second voice coil motor 436, to which the second camera 433 may be connected. The second voice coil motor 436 can be used to drive the second camera 433 relative to the beam splitter. The second voice coil motor 436 offers advantages such as a simple structure, ease of control, and high movement precision, facilitating adjustment of the position of the second camera 433 relative to the beam splitter to capture high-quality images.

[0107] For example, as shown in FIG25 , the image acquisition assembly 430 may further include a screw assembly 437. The second camera 433 may be connected to a slider 4371 of the screw assembly 437. The screw assembly 437 is used to drive the first imaging element 130 to move relative to the light guide 120. The screw assembly 437 provides smooth transmission, and the sliding of the slider 4371 facilitates the movement of the first imaging element 130.

[0108] Exemplarily, as shown in Figure 25, the screw assembly 437 also includes a screw motor 4373, a screw 4372, a guide rod 4374 and a support member 4375. The screw motor 4373, the screw 4372 and the guide rod 4374 are all installed on the support member 4375. The extension directions of the screw 4372 and the guide rod 4374 are consistent. The slider 4371 is threadedly connected to the screw 4372 and slidingly connected to the guide rod 4374; the screw motor 4373 is connected to the screw 4372 and can drive the screw 4372 to rotate. When the screw 4372 rotates, the screw 4372 can drive the slider 4371 to slide relative to the guide rod 4374, and then drive the first camera 130 to move.

[0109] In the embodiment of the present application, as shown in FIG26 , the line connecting the center of the second camera 433 and the center of the spectrometer can be a first line C. The line connecting the center of the first camera 432 and the center of the spectrometer can be a second line D. The angle θ between the first line C and the second line D is an acute angle. With this arrangement, when the first line C and the second line D form an acute angle, the first camera 432 and the second camera 433 can be brought closer together, thereby further streamlining the structure of the image acquisition component 430. It should be noted that the center of an object refers to the center of the object's geometric shape.

[0110] 12, 13, 20, 21, and 22, the image acquisition system 400 may further include a functional circuit board 410, which may be electrically connected to the main board 200. An operator may press the key assembly 300 to send a control signal to the main board. In response to the control signal, the main board controls the image acquisition system 400 via the functional circuit board 410, thereby facilitating the operator's use of the inspection device 10.

[0111] In some possible implementations of the embodiments of the present application, as shown in Figures 20 and 21 , the key assembly 300 and the functional circuit board 410 can be located on the same side of the mainboard 200. In this case, the key assembly 300 can be electrically connected to the functional circuit board 410, and the functional circuit board 410 can be electrically connected to the mainboard 200. In other words, the key assembly 300 can be indirectly electrically connected to the mainboard 200 via the functional circuit board 410.

[0112] In other possible implementations of the embodiments of the present application, as shown in Figures 12 and 13, the key assembly 300 and the functional circuit board 410 can be located on different sides of the mainboard 200. In other words, the functional circuit board 410 can be located on the side of the mainboard 200 that is away from the key assembly 300. In this case, the key assembly 300 can be directly electrically connected to the mainboard 200. Compared with arranging the key assembly 300 and the functional circuit board 410 on the same side of the mainboard 200, arranging the key assembly 300 and the functional circuit board 410 on different sides of the mainboard 200 can reduce the area of ​​the mainboard 200, thereby reducing the volume of the inspection device 10, and further reducing the volume of the endoscopic inspection equipment, making the endoscopic inspection equipment easier to carry.

[0113] The technical solution of the embodiment of the present application will be further described below by taking the example that the button assembly 300 and the functional circuit board 410 are arranged on different sides of the mainboard 200.

[0114] The mainboard 200 can be located within the accommodating cavity and connected to the housing 100. For example, the mainboard 200 can be directly connected to the housing 100 via connecting bolts. For example, referring to Figures 12 and 13, the mainboard 200 can also be connected to the key assembly 300 via a spacer 412, and the key assembly 300 is connected to the first connecting portion 111 of the first housing 110 via the spacer 412, thereby indirectly connecting the mainboard 200 to the housing 100. This arrangement, compared to the related art in which the mainboard is directly connected to the housing, can further reduce the volume of the mainboard 200, thereby reducing the volume of the inspection device 10, and facilitating the miniaturization of endoscopic inspection equipment.

[0115] The mainboard 200 and the key assembly 300 can be electrically connected. For example, the mainboard 200 can include a key function circuit. The key function circuit can have a first connection pad for electrically connecting to the key assembly 300. The key assembly 300 can be soldered to the first connection pad.

[0116] The functional circuit board 410 can be located on a side of the mainboard 200 facing away from the key assembly 300. For example, the functional circuit board 410 may not be electrically connected to the mainboard 200. In some possible implementations of the embodiments of the present application, the functional circuit board 410 may also be electrically connected to the mainboard 200. For example, the mainboard 200 may also include an image function circuit. The image function circuit may have a second connection pad electrically connected to the functional circuit board 410. The mainboard 200 has a first surface 210 and a second surface 220 that are opposite to each other. The first connection pad may be provided on the first surface 210, and the second connection pad may be provided on the second surface 220.

[0117] 12 and 13 , a first connection circuit board 230 and a second connection circuit board 240 may be respectively provided at both ends of the main board 200 .

[0118] The first connection circuit board 230 may be located on a side of the main board 200 near the first end of the housing 100. The first connection circuit board 230 is connected to the housing 100. For example, the first connection circuit board 230 may be connected to the image acquisition system 400, thereby indirectly connecting to the housing 100.

[0119] The first connecting circuit board 230 may be provided with a first connecting terminal 231. Exemplarily, referring to FIG6 , the first connecting terminal 231 may be a metal contact. Referring to FIG7 , the first connecting terminal 231 may also be a USB Type-C interface. The first end of the housing 100 may be provided with a first connecting window 116, and the first connecting window 116 exposes the first connecting terminal 231. The first connecting circuit board 230 may be electrically connected to the mainboard 200 via a flexible flat cable (FFC) or a harness. When the inspection device 10 is installed in the endoscope 20, the first connecting terminal 231 exposed by the first connecting window 116 may be electrically connected to the endoscope 20, thereby electrically connecting the mainboard 200, the first connecting circuit board 230 and the endoscope 20 to transmit electrical signals between the endoscope 20 and the inspection device 10.

[0120] For example, the second connecting circuit board 240 can be located on a side of the mainboard 200 near the second end of the housing 100. The second connecting circuit board 240 is connected to the housing 100. For example, referring to Figure 8, a third connecting portion 117 can be provided within the first housing 110. The third connecting portion 117 can be a columnar structure and can be provided with a threaded hole. The second connecting circuit board 240 can be provided with a connecting through hole, which is opposite to the threaded hole. The second connecting circuit board 240 can be connected to the third connecting portion 117 via a connecting bolt that passes through the connecting through hole and is screwed into the threaded hole.

[0121] The second connection circuit board 240 may be provided with a second connection terminal 241. For example, the second connection terminal 241 may be a metal contact. The second connection terminal 241 may also be a USB Type-C interface. The second end of the housing 100 may be provided with a second connection window 118, and the second connection window 118 exposes the second connection terminal 241. The second connection circuit board 240 may be electrically connected to the mainboard 200 via a flexible flat cable (FFC) or a harness. The second connection terminal 241 exposed by the second connection window 118 can be electrically connected to an external device such as a display, a computer, or a surgical instrument, thereby transmitting electrical signals between the external device and the inspection device 10.

[0122] The key assembly 300 can be located on the side of the mainboard 200 facing the key window 112. For example, referring to Figures 12, 13, and 19, the key assembly 300 can include a key press plate 320, a key board 330, and at least one key switch 310. The key switch 310 is soldered to the side of the mainboard 200 facing the key window 112. The key press plate 320 is located on the side of the mainboard 200 facing the key window 112 and is connected to the mainboard 200 and the housing 100. For example, the mainboard 200 and the key press plate 320 can be connected to the first connecting portion 111 of the first housing 110 via an isolation column 412. The key press plate 320 is provided with a key through hole 340, which is sleeved on the key switch 310. The keypad 330 may include a key portion 350 and a stopper 360. The key portion 350 faces the key switch 310, with a portion of the key portion 350 extending out of the key window 112. A key recess 370 is provided on the side of the key portion 350 facing the key switch 310, which covers the key switch 310. In other words, the key portion 350 covers the key switch 310, protecting it. Furthermore, the key switch 310 can be operated by pressing the key portion 350, improving the convenience of key operation. The stopper 360 is connected to the edge of the key portion 350 and is located between the key press plate 320 and the housing 100. When the key press plate 320 is connected to the housing 100, the stopper 360 is fixed between the key press plate 320 and the housing 100, thereby improving the convenience of securing the keypad 330.

[0123] 12 and 13 , the image acquisition system 400 may further include a light source assembly 420 for illumination. The light source assembly 420 is configured to emit light to the outside of the housing 100 through the light-transmitting window 121 to illuminate the image acquisition assembly 430 .

[0124] The light source assembly 420 can be mounted within the housing 100. For example, the inspection device can further include a mounting bracket 440. For example, the mounting bracket 440 can be located between the functional circuit board 410 and the light-transmitting window 121. The mounting bracket 440 can be connected to the housing 100. The light source assembly 420 can be connected to the mounting bracket 440 and electrically connected to the mainboard 200. The image acquisition assembly 430 can also be mounted on the mounting bracket 440. For example, the beam splitter, light guide, first camera 432, and second camera 433 can all be mounted on the mounting bracket 440. The beam splitter can be a beam splitter prism 431. The light guide can be a turning prism 434. The first camera 432 and second camera 433 can be electrically connected to the functional circuit board 410. Light from outside the housing can enter the beam splitter prism through the light-transmitting window 121 and be split into a first optical path A and a second optical path B, which are independent of each other. The first camera 432 can be located on the first optical path A and is configured to form an image having a first magnification. The turning prism 434 and the second camera 433 may be located on the second optical path B. The second camera 433 is configured to form an image with a second magnification, which may be greater than the first magnification.

[0125] When inspecting the inspection position, the functional circuit board 410 can control the light source assembly 420 to emit light to the outside of the housing 100 through the light-transmitting window 121 to illuminate the inspection position. The functional circuit board 410 can control the image acquisition assembly 430 to acquire an image of the inspection position outside the housing 100 through the light-transmitting window 121, thereby inspecting the inspection position.

[0126] Furthermore, during the assembly and adjustment of the inspection device 10, since the light source assembly 420 and the image acquisition assembly 430 are both mounted on the mounting frame 440, the light source assembly 420 and the image acquisition assembly 430 can be assembled and adjusted on the mounting frame 440 first, and then the assembled light source assembly 420, the image acquisition assembly 430, and the mounting frame 440 can be mounted on the housing 100. This arrangement can improve the relative positional accuracy between the light source assembly 420, the image acquisition assembly 430, and the mounting frame 440, and improve the convenience of assembling and adjusting the inspection device 10, thereby improving the quality of images acquired by the inspection device 10.

[0127] 12 and 13 , the light source assembly 420 may include at least one light emitting device 422 for illumination. For example, there may be multiple light emitting devices 422 , and the spectra of light emitted by the multiple light emitting devices 422 may be the same or different, which will not be described in detail in this embodiment of the application.

[0128] Exemplarily, the light emitted by at least one light-emitting device 422 may include at least one of white light, green light, red light, blue light, infrared light and ultraviolet light, thereby being able to provide a variety of lighting spectra for the inspected part of the object to be inspected, thereby enabling the inspection device 10 to perform different detections on the inspected part of the object to be inspected.

[0129] For example, the light emitted by the plurality of light emitting devices 422 may be white light, and the spectrum of the white light may be 420-680 nm. The plurality of light emitting devices 422 may provide white light illumination for the inspected portion of the inspected object, thereby enabling the inspection device 10 to perform conventional white light inspection on the inspected portion of the inspected object.

[0130] Exemplarily, the light emitted by the plurality of light emitting devices 422 may include at least one of green light, red light, and blue light; for example, the wavelength range of green light is 500-580 nm, and the central wavelength of green light may be 540 nm; for example, the wavelength range of red light is 580-680 nm, and the central wavelength of red light may be 650 nm; for example, the wavelength range of blue light is 400-500 nm, and the central wavelength of blue light may be 415 nm. The plurality of light emitting devices 422 can provide green, red, and blue light illumination for the inspected portion of the object to be inspected, thereby enabling the inspection device 10 to perform narrow band imaging (NBI) detection on the subepidermal and supraepidermal blood vessels of the inspected portion of the object to be inspected.

[0131] For example, the light emitted by the plurality of light emitting devices 422 may be infrared light, the wavelength of which may be ≥ 700 nm, and the central wavelength of which may be 780 nm. The plurality of light emitting devices 422 may provide infrared light to the inspected portion of the object to be inspected, thereby stimulating the targeted agent in the inspected portion of the object to be inspected to emit fluorescence, thereby enabling the inspection device 10 to perform targeted agent fluorescence detection on the inspected portion of the object to be inspected.

[0132] For example, the light emitted by the plurality of light emitting devices 422 may be ultraviolet light, with a wavelength range of ≤400 nm and a central wavelength of 340 nm. The plurality of light emitting devices 422 may provide ultraviolet light to the inspected portion of the object to be inspected, thereby stimulating the inspected portion of the object to be inspected to emit fluorescence, thereby enabling the inspection device 10 to perform autofluorescence detection on the inspected portion of the object to be inspected.

[0133] It is understood that the wavelength ranges of light emitted by the multiple light-emitting devices 422 may be the same or different. For example, there may be four light-emitting devices 422, two of which may emit white light, and the other two light-emitting devices 422 may emit at least one of green, red, and blue light.

[0134] The light source assembly 420 may further include a light source circuit board 421. The mounting frame 440 may have a first mounting surface 441 opposite to the light-transmitting window 121. The light source circuit board 421 may be connected to the first mounting surface 441 and electrically connected to the functional circuit board 410. For example, the light source circuit board 421 may be a flexible printed circuit (FPC) that may be directly soldered to the functional circuit board. At least one light-emitting device 422 may be connected to a side of the light source circuit board 421 that faces away from the first mounting surface 441. The light-emitting device 422 may emit light under the action of the light source circuit board 421.

[0135] For example, referring to FIG. 12 , the image acquisition assembly 430 may have a first light incident surface 4311. For example, the first light incident surface 4311 may be disposed on the beam splitter prism 431. The light source circuit board 421 surrounds at least a portion of the first light incident surface 4311 to prevent the light source circuit board 421 from blocking light entering the image acquisition assembly 430. Furthermore, because the light source circuit board 421 surrounds at least a portion of the first light incident surface 4311, multiple light-emitting devices 422 can be arranged along the circumference of the first light incident surface 4311 to illuminate the inspection position circumferentially of the first light incident surface 4311, thereby improving illumination uniformity.

[0136] The light source assembly 420 and the image capture assembly 430 can both be mounted on a mounting bracket 440. For example, referring to Figures 16, 17, and 18, the mounting bracket 440 can be provided with a prism mounting slot 442, the notch of which is opposite to the light-transmitting window 121. When the image capture assembly 430 includes a beam splitter prism 431, the prism mounting slot 442 is used to mount the beam splitter prism 431. When the image capture assembly 430 also includes a steering prism 434, the prism mounting slot 442 is also used to mount the steering prism 434. By arranging the notch of the prism mounting slot 442 opposite to the light-transmitting window 121, the mounting bracket 440 can be prevented from blocking light, thereby allowing as much external light as possible to enter the image capture assembly 430, thereby improving image quality.

[0137] Exemplarily, referring to FIG16 , the prism mounting groove 442 has a plurality of groove walls that are adjacent to each other in sequence, and an avoidance groove 4421 may be provided between each two adjacent groove walls. The side surfaces of the beam splitter prism 431 and / or the steering prism 434 may fit with the groove walls of the prism mounting groove 442 to secure the beam splitter prism 431 and / or the steering prism 434. The edges of the beam splitter prism 431 and / or the steering prism 434 may be located within the avoidance groove 4421 to prevent the edges of the beam splitter prism 431 and / or the steering prism 434 from interfering with the area where two adjacent groove walls in the prism mounting groove 442 intersect, thereby preventing the beam splitter prism 431 and / or the steering prism 434 from being installed in the mounting bracket 440.

[0138] For example, referring to FIG16 , when the image acquisition assembly 430 includes a beam splitter prism 431 and a steering prism 434, the prism mounting groove 442 may include a first sub-groove 4422 and a second sub-groove 4423. The first sub-groove 4422 accommodates the beam splitter prism 431, and the second sub-groove 4423 accommodates the steering prism 434. A separator 4424 may be provided between the first sub-groove 4422 and the second sub-groove 4423. The separator 4424 is located between the beam splitter prism 431 and the steering prism 434. Along the depth direction of the first sub-groove 4422, the height of the separator 4424 is less than the depth of the first sub-groove 4422. Along the depth direction of the second sub-groove 4423, the height of the separator 4424 is less than the depth of the second sub-groove 4423. The separator 4424 is used to isolate the beam splitter prism 431 from the steering prism 434. When assembling the image acquisition component 430, the relative position between the beam splitter prism 431 and the steering prism 434 can be adjusted by adjusting the size of the isolation portion 4424, and the isolation portion 4424 will not block the light between the beam splitter prism 431 and the steering prism 434, thereby improving the relative position accuracy of the beam splitter prism 431 and the steering prism 434, and further improving the quality of the image formed by the image acquisition component 430.

[0139] 16 to 18 , the mounting bracket 440 may further include at least one adjustment hole 4425 extending through the prism mounting slot 442. After the beam splitter prism 431 and / or the steering prism 434 are mounted in the prism mounting slot 442, the beam splitter prism 431 and / or the steering prism 434 are difficult to move within the prism mounting slot 442 because the side surfaces of the beam splitter prism 431 and / or the steering prism 434 abut against the walls of the prism mounting slot 442 over a large abutting area. This makes it difficult to adjust the beam splitter prism 431 and / or the steering prism 434, for example, if the beam splitter prism 431 and / or the steering prism 434 are offset or if they are damaged and need to be replaced. Therefore, the through hole 4425 can be adjusted to contact the beam splitter prism 431 and / or the steering prism 434, thereby applying a moving force to the beam splitter prism 431 and / or the steering prism 434, so that the beam splitter prism 431 and / or the steering prism 434 move, thereby improving the convenience of adjusting the beam splitter prism 431 and / or the steering prism 434.

[0140] Furthermore, the beam splitter prism 431 and / or the turning prism 434 can be connected to the sidewalls of the prism mounting groove 442 by gluing. During assembly of the beam splitter prism 431 and the turning prism 434, glue can be injected between the beam splitter prism 431 and the prism mounting groove 442, and between the turning prism 434 and the prism mounting groove 442, through the adjustment through-hole 4425. This improves the convenience of gluing and the efficiency of assembling the beam splitter prism 431 and the turning prism 434.

[0141] For example, referring to Figures 17 and 18 , the mounting bracket 440 may further include a camera mounting slot 443 for mounting the first camera 432. The camera mounting slot 443 may be disposed opposite the first sub-slot 4422, and the first sub-slot 4422 and the camera mounting slot 443 may be connected via a first light-transmitting hole 4426. When light is emitted from the beam splitter prism 431, it may be incident on the camera mounting slot 443 through the first light-transmitting hole 4426 and enter the first camera 432 for imaging.

[0142] The mounting frame 440 may also be provided with a mounting tube 444 for connecting to the second camera 433. The mounting tube 444 is disposed opposite the second sub-groove 4423. The second sub-groove 4423 and the mounting tube 444 are connected via a second light hole 4427. When light is emitted from the deflection prism 434, it can enter the mounting tube 444 through the second light hole 4427 and enter the second camera 433 for imaging.

[0143] 8 and 16 , a first positioning portion 113 may be provided on the inner side of the first end of the housing 100. For example, the first positioning portion 113 may be located on the inner side of the first end of the first housing 110. The first positioning portion 113 has a first positioning surface 1131. A second positioning portion 445 may be provided on the side of the mounting bracket 440 facing the first end of the housing 100. The second positioning portion 445 has a second positioning surface 4451 facing the housing 100. The second positioning surface 4451 mates with the first positioning surface 1131, thereby positioning the mounting bracket 440 relative to the housing 100 and improving the relative position accuracy between the mounting bracket 440 and the housing 100.

[0144] Exemplarily, the first positioning surface 1131 and the second positioning surface 4451 can both be stepped surfaces, and the matching stepped surfaces can constrain the first positioning surface 1131 and the second positioning surface 4451 in multiple directions, further improving the relative position accuracy between the mounting frame 440 and the shell 100.

[0145] With reference to Figures 8, 16, and 17, the inner side wall of the housing 100 may further be provided with a third positioning portion 114 and a second connecting portion 115. For example, the third positioning portion 114 and the second connecting portion 115 are both located on the inner side of the first housing 110. The third positioning portion 114 has a third positioning surface 1141. The second connecting portion 115 is provided with a threaded hole. The mounting bracket 440 may be provided with at least one connecting arm 446, and the connecting arm 446 may include a fourth positioning portion 4461 and a fourth connecting portion 4462 connected to each other. The fourth positioning portion 4461 has a fourth positioning surface 4463 on the side facing the housing 100. The fourth positioning surface 4463 is in contact with the third positioning surface 1141 to position the connecting arm 446 and the housing 100, thereby positioning the mounting bracket 440 and the housing 100, further improving the relative position accuracy between the mounting bracket 440 and the housing 100. The fourth connecting portion 4462 is provided with a connecting through hole 4464, which is opposite to the threaded hole. The fourth connecting portion 4462 can be connected to the housing 100 via a connecting bolt that passes through the connecting through hole 4464 and is screwed into the threaded hole.

[0146] 12 and 13 , the inspection device 10 may further include a distance sensor 500 . The distance sensor 500 may be electrically connected to the functional circuit board 410 . The distance sensor 500 is used to measure the distance of the inspection position.

[0147] Exemplarily, the distance sensor 500 may be a laser ranging sensor or the like.

[0148] For example, the distance sensor 500 may be installed on the side of the turning prism 434 facing the light-transmitting window 121. The distance sensor 500 may transmit a distance measurement signal to the outside of the housing 100 through the light-transmitting window 121 to measure the distance of the inspection position.

[0149] It is understood that the distance sensor 500 may also be other types of distance sensors, such as an infrared distance sensor or an ultrasonic distance sensor. The distance sensor 500 may also be installed at other locations on the inspection device 10, which will not be described in detail in this embodiment of the present application. In some possible implementations of this embodiment of the present application, the distance sensor 500 may also be omitted.

[0150] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. An image acquisition system, characterized in that: include: A beam splitter, used to split the light incident on the beam splitter into multiple beams of light with different directions; A plurality of cameras are arranged corresponding to the plurality of light beams split by the light splitting element, each of the cameras is used to image a corresponding light beam, and at least some of the plurality of cameras have different magnifications.

2. The image acquisition system according to claim 1, characterized in that: The light splitter is provided with a first light emitting surface and a second light emitting surface, the first light emitting surface and the second light emitting surface are oriented in different directions, one of the multiple light beams is emitted toward the first light emitting surface, and another of the multiple light beams is emitted toward the second light emitting surface; The multiple cameras include a first camera and a second camera, the first camera faces the second light exit surface, and the first camera has a first magnification; the second camera faces the first light exit surface, and the second camera has a second magnification, which is greater than the first magnification.

3. The image acquisition system according to claim 2, characterized in that: The first camera and the second camera have different focal lengths.

4. The image acquisition system according to claim 2, characterized in that: The first camera and the second camera have different fields of view.

5. The image acquisition system according to claim 2, characterized in that: A line connecting the center of the second camera and the center of the beam splitter is a first line, and a line connecting the center of the first camera and the center of the beam splitter is a second line; and an angle between the first line and the second line is an acute angle.

6. The image acquisition system according to claim 2, characterized in that: The image acquisition system also includes a light guide, which has a light input surface, the light input surface faces the first light output surface, and the light emitted to the first light output surface is configured to pass through the first light output surface and the light input surface in sequence; the second camera faces the light guide and is used to receive the light guided by the light guide.

7. The image acquisition system according to claim 6, characterized in that: The light guide is a turning prism, and a turning angle of the turning prism is greater than or equal to 25° and less than or equal to 30°.

8. The image acquisition system according to claim 6, characterized in that: A light reflection prevention structure is provided between the light splitter and the light guide, and the light emitted toward the first light emitting surface passes through the light reflection prevention structure and enters the light incident surface.

9. The image acquisition system according to claim 8, characterized in that: The light-incoming surface is in contact with at least a portion of the first light-emitting surface to form the light-preventing reflection structure.

10. The image acquisition system according to claim 9, characterized in that: The difference in refractive index between the light splitting element and the light guiding element is smaller than a first set value.

11. The image acquisition system according to claim 10, characterized in that: The first set value is one tenth of the smaller refractive index of the beam splitter and the refractive index of the light guide.

12. The image acquisition system according to claim 8, characterized in that: The image acquisition system further includes a light-transmitting member, wherein the light-transmitting member is located between the light-incoming surface and the first light-emitting surface; Along the relative direction of the light-incoming surface and the first light-emitting surface, two sides of the light-transmitting member are respectively in contact with the light-incoming surface and the first light-emitting surface to form the light-preventing reflection structure.

13. The image acquisition system according to claim 12, characterized in that: The maximum difference in refractive index among the light splitting element, the light guiding element and the light transmitting element is less than a second set value.

14. The image acquisition system according to claim 13, characterized in that: Among the refractive indices of the beam splitter, the light guide, and the light transmissive member, the second set value is one tenth of the smallest one among them.

15. The image acquisition system according to any one of claims 6 to 14, characterized in that: The beam splitter comprises two right-angle prisms, the oblique surfaces of the two right-angle prisms are attached to form a beam splitter surface, and the beam splitter surface is used to split the light incident on the beam splitter into two beams of light in different directions; The light guide is also provided with a reflecting surface and an emitting surface, the reflecting surface is located between the emitting surface and the light incident surface, and the second camera faces the emitting surface; the light emitted to the first light emitting surface is configured to pass through the first light emitting surface, the light incident surface, the reflecting surface, the emitting surface and the second camera in sequence.

16. The image acquisition system according to any one of claims 2 to 14, characterized in that: The position of the first camera relative to the light splitting element is adjustable.

17. The image acquisition system according to claim 16, characterized in that: The image acquisition system includes a first voice coil motor, the first camera is connected to the first voice coil motor, and the first voice coil motor is used to drive the first camera to move relative to the beam splitter.

18. The image acquisition system according to any one of claims 2 to 14, characterized in that: The position of the second camera relative to the light splitting element is adjustable.

19. The image acquisition system according to claim 18, characterized in that: The image acquisition system further includes a second voice coil motor, the second camera is connected to the second voice coil motor, and the second voice coil motor is used to drive the second camera to move relative to the beam splitter.

20. The image acquisition system according to any one of claims 1 to 14, characterized in that: The image acquisition system further includes a light source assembly including at least one light emitting device for illumination.

21. The image acquisition system according to claim 20, characterized in that: The light emitted by at least one of the light emitting devices includes at least one of white light, green light, red light, blue light, infrared light and ultraviolet light.

22. The image acquisition system according to claim 21, characterized in that: The spectrum range of the white light is 420nm-680nm.

23. The image acquisition system according to claim 21, characterized in that: The wavelength range of the red light is 580-680nm, and the central wavelength of the red light is 650nm.

24. The image acquisition system according to claim 21, characterized in that: The wavelength range of the green light is 500-580 nm, and the central wavelength of the green light is 540 nm.

25. The image acquisition system according to claim 21, characterized in that: The wavelength range of the blue light is 400-500nm, and the central wavelength of the blue light is 415nm.

26. The image acquisition system according to claim 21, characterized in that: The wavelength range of the infrared light is ≥700nm, and the central wavelength of the infrared light is 780nm.

27. The image acquisition system according to claim 21, characterized in that: The wavelength range of the ultraviolet light is ≤400nm, and the central wavelength of the ultraviolet light is 340nm.

28. The image acquisition system according to claim 21, characterized in that: The number of the light emitting devices is four, of which two of the light emitting devices emit white light; and the light emitted by the other two of the light emitting devices includes at least one of green light, red light and blue light.

29. An inspection device, characterized in that: A device comprising a housing and an image acquisition system according to any one of claims 1 to 28, wherein the housing has a receiving cavity inside, and a light-transmitting window communicating with the receiving cavity is formed at a first end of the housing; The image acquisition system is arranged in the accommodating cavity, and the light-incoming side of the light-splitting element of the image acquisition system faces the light-transmitting window.

30. The inspection device according to claim 29, characterized in that The inspection device further includes a main board and a key assembly; the main board is located in the accommodating cavity and is connected to the housing; Part of the key assembly is located in the accommodating cavity and on one side of the main board, and the key assembly is electrically connected to the main board; The image acquisition system comprises a functional circuit board, and the functional circuit board is electrically connected to the main board.

31. The inspection device according to claim 30, characterized in that The key assembly and the functional circuit board are located on the same side of the main board.

32. The inspection device according to claim 31, characterized in that The button assembly and the functional circuit board are located on different sides of the main board.

33. The inspection device according to claim 32, characterized in that The mainboard is formed with a key function circuit and an image function circuit.

34. The inspection device according to any one of claims 30 to 33, characterized in that: A key window is disposed on the side of the shell, the key window is opposite to the key assembly, and a portion of the key assembly extends out of the key window.

35. The inspection device according to claim 34, characterized in that The key assembly includes a key pressure plate, a key board and at least one key switch; The key switch is welded to a side of the mainboard facing the key window; The key pressing plate is located on a side of the main board facing the key window and is connected to the main board and the housing. The key pressing plate is provided with at least one key through hole, and the key through hole is sleeved on the key switch. The key plate is located on the side of the key pressure plate facing the key window, and the key plate includes a key part and a limiting part. The key part is opposite to the key switch, and part of the key part extends out of the key window. A key groove is provided on the side of the key part facing the key switch, and the key groove covers the key switch; the limiting part is connected to the edge of the key part and is located between the key pressure plate and the shell.

36. The inspection device according to any one of claims 30 to 33, characterized in that: The inspection device further comprises a mounting frame, which is located in the accommodating cavity and connected to the housing; The image acquisition system further includes a light source assembly, the light source assembly is connected to the mounting frame and is electrically connected to the mainboard, and the light source assembly is configured to emit light to the outside of the housing through the light-transmitting window; The image acquisition system further includes a light guide, the light splitter, the light guide, the first camera and the second camera are all mounted on the mounting frame, the light splitter is a light splitter prism, the light guide is a steering prism, and the first camera and the second camera are electrically connected to the functional circuit board; The light outside the shell enters the dichroic prism through the light-transmitting window and is divided into a first light path and a second light path that are independent of each other; the first camera is located on the first light path, and the first camera is used to form an image with a first magnification; the steering prism and the second camera are located on the second light path, and the second camera is used to form an image with a second magnification, and the second magnification is greater than the first magnification.

37. The inspection device according to claim 36, characterized in that The mounting frame has a first mounting surface opposite to the light-transmitting window; The light source assembly includes a light source circuit board and at least one light-emitting device. The light source circuit board is connected to the first mounting surface and is electrically connected to the functional circuit board. At least one of the light-emitting devices is connected to a side of the light source circuit board away from the first mounting surface.

38. The inspection device according to claim 37, characterized in that The beam splitter prism has a first light incident surface, and the light source circuit board surrounds at least a portion of the first light incident surface.

39. The inspection device according to claim 36, characterized in that The mounting frame is provided with a prism mounting groove, and the notch of the prism mounting groove is opposite to the light-transmitting window.

40. The inspection device according to claim 39, characterized in that The mounting frame is further provided with at least one adjustment through hole, and at least one of the adjustment through holes penetrates through the prism mounting groove.

41. The inspection device according to claim 36, characterized in that A first positioning portion is disposed on the inner side of the first end of the housing, and the first positioning portion has a first positioning surface; A second positioning portion is disposed on one side of the mounting frame facing the first end of the shell, and the second positioning portion is disposed with a second positioning surface facing the shell, and the second positioning surface is in contact with the first positioning surface.

42. The inspection device according to claim 41, characterized in that The first positioning surface and the second positioning surface are both step surfaces.

43. The inspection device according to any one of claims 29 to 33, characterized in that: The shell comprises a first shell and a second shell which are detachably connected, and the first shell and the second shell are arranged to enclose the accommodating cavity.

44. The inspection device according to claim 43, characterized in that A first connecting groove is provided on one side of the first shell and the second shell facing the other; The other of the first shell and the second shell is provided with a first connecting protrusion, and the first connecting protrusion is inserted into the first connecting groove.

45. The inspection device according to claim 44, characterized in that The housing further includes a sealing member, wherein the sealing member is located in the first connecting groove and between the first connecting groove and the first connecting protrusion.

46. ​​The inspection device according to claim 44, characterized in that A second connecting groove is provided on one side of the second end of the first shell and the second end of the second shell facing the other side; The other of the second end of the first shell and the second end of the second shell is provided with a second connecting protrusion, and the second connecting protrusion is inserted into the second connecting groove; Wherein, the second end of the first shell and the second end of the second shell are both away from the endoscope or the dilator.

47. An endoscopy device, characterized in that: Comprising an inspection device as described in any one of claims 29-46.

48. The endoscopic inspection apparatus according to claim 47, characterized in that An endoscope is also included, and the inspection device is installed in the endoscope and is electrically connected to the endoscope.

49. The endoscopic inspection apparatus according to claim 47, characterized in that Also included is a dilator, in which the inspection device is installed.

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