Image acquisition system, inspection device and endoscopy equipment

Abstract

The embodiments of the present application relate to an image acquisition system, an inspection device, and an endoscopic inspection device. The image acquisition system includes a light source component and an image acquisition component, wherein the light source component is configured to emit light to a preset position, and the image acquisition component is configured to acquire an image of the preset position; the image acquisition component includes a plurality of dichroic prisms and a plurality of cameras; wherein the plurality of dichroic prisms are arranged step by step, and the plurality of dichroic prisms are used to split the light beam step by step to form a plurality of light paths; the plurality of cameras are respectively located on the plurality of light paths, and each of the cameras is used to acquire an image of the preset position through the corresponding light path; the magnification of the plurality of cameras is different. The above technical solution can improve the technical problem that the image acquisition system has a large structural size and is not conducive to portable design.

Description

Technical Field

[0001] The embodiments of the present application belong to the technical field of medical devices, and in particular, relate to an image acquisition system, an inspection device, and an endoscopic inspection device. Background Art

[0002] In the field of medical technology, endoscopic inspection equipment is often used to inspect human cavities, such as the ears, nose and throat, oral cavity, abdominal cavity, uterine cavity or vagina. Endoscopic inspection equipment usually includes an inspection device for acquiring or processing images of human cavities. However, the image acquisition system of the inspection device in the related art relies on the change of the optical lens structure to achieve optical magnification, that is, to enlarge or reduce the image to be captured by moving the lens. In this way, it is necessary to reserve space for the lens to move, and to increase the drive and power device of the lens, resulting in a larger structure size of the image acquisition system, which is not conducive to the design of portable products. Utility Model Content

[0003] In view of this, the embodiments of the present application provide an image acquisition system, an inspection device and an endoscopic inspection equipment to improve the technical problem that the image acquisition system has a large structural size and is not conducive to portable design.

[0004] A first aspect of an embodiment of the present application provides an image acquisition system, comprising a light source component and an image acquisition component, wherein the light source component is configured to emit light to a preset position, and the image acquisition component is configured to acquire an image of the preset position; the image acquisition component comprises a plurality of dichroic prisms and a plurality of cameras; wherein the plurality of dichroic prisms are arranged in stages, and the plurality of dichroic prisms are used to split light beams in stages to form a plurality of light paths; the plurality of cameras are respectively located on the plurality of light paths, and each of the cameras is used to acquire an image of the preset position through the corresponding light path; and the magnification of the plurality of cameras is different.

[0005] The image acquisition system of the embodiment of the present application can acquire images with different magnification effects by setting up multiple cameras with different magnifications. Compared with enlarging or reducing the image to be captured by moving the lens, the structural size of the image acquisition system can be effectively reduced, which is conducive to realizing a portable design.

[0006] In an implementation that may include any one of the above embodiments, the zoom factors of the lenses of the multiple cameras are different.

[0007] In an implementation that may include any one of the above embodiments, the sensitivities of the image sensors of the plurality of cameras are increased step by step.

[0008] In an implementation that may include any one of the above embodiments, the splitting ratio of the output light of the plurality of the beam splitting prisms increases / decreases step by step so that the luminous flux of the plurality of the light paths remains substantially consistent.

[0009] In an implementation that may include any one of the above embodiments, the light source assembly includes a light emitting device, the light emitting device is used to emit light to the preset position, and the brightness of the light emitting device is adjustable.

[0010] In an implementation that may include any one of the above embodiments, the light source assembly further includes a condenser, and the condenser is disposed outside the light emitting device.

[0011] In an implementation that may include any one of the above embodiments, the image acquisition component further includes a plurality of steering prisms, wherein the plurality of steering prisms are respectively located on the plurality of optical paths and respectively located between the corresponding beam splitting prisms and the camera.

[0012] In an implementation that may include any one of the above embodiments, the image acquisition system further includes a mounting frame, and the light source assembly and the image acquisition assembly are both disposed on the mounting frame.

[0013] In an implementation that may include any one of the above embodiments, the image acquisition system also includes a functional circuit board, which is electrically connected to the image acquisition component, and the functional circuit board is specifically configured to control any one of the cameras to acquire an image of the preset position.

[0014] In an implementation that may include any one of the above embodiments, the functional circuit board is provided with a connection terminal, and the connection terminal is used to electrically connect to an external device.

[0015] In an implementation that may include any one of the above embodiments, the image acquisition system further includes a distance sensor, and the distance sensor is used to measure the distance of the preset position.

[0016] A second aspect of an embodiment of the present application provides an inspection device, comprising an image acquisition system as described in any one of the above items.

[0017] Since the inspection device of the embodiment of the present application includes any one of the above-mentioned image acquisition systems, the inspection device also has the advantages of any one of the above-mentioned image acquisition systems, which will not be described in detail here.

[0018] In an implementation that may include any one of the above embodiments, the inspection device also includes a shell having a accommodating cavity and a light-transmitting window, the image acquisition system is disposed in the accommodating cavity, and the image acquisition system acquires an image of the outside of the shell through the light-transmitting window.

[0019] In an implementation that may include any one of the above embodiments, the inspection device also includes a main board disposed in the accommodating cavity and electrically connected to the image acquisition system, and a key assembly partially located in the accommodating cavity and electrically connected to the main board.

[0020] A third aspect of an embodiment of the present application provides an endoscopic inspection device, comprising an inspection device as described in any one of the above items.

[0021] Since the endoscopic inspection device of the embodiment of the present application includes any one of the above-mentioned inspection devices, the endoscopic inspection device also has the advantages of any one of the above-mentioned inspection devices, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. It is obvious that the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an endoscopic inspection device according to an embodiment of the present application;

[0024] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the inspection device;

[0025] Figure 3 for Figure 2 A schematic diagram of a first perspective three-dimensional structure of the first shell;

[0026] Figure 4 for Figure 2 A schematic diagram of the stereoscopic structure of the first shell from a second viewing angle;

[0027] Figure 5 for Figure 2 A schematic diagram of the third perspective stereoscopic structure of the second shell;

[0028] Figure 6 for Figure 2 A schematic diagram of the third perspective structure of the second shell in the fourth perspective;

[0029] Figure 7 for Figure 2 A schematic diagram of the three-dimensional structure of the inspection device when the housing is hidden;

[0030] Figure 8 for Figure 7 Assembly diagram of the middle button assembly;

[0031] Fig. 9 for Figure 7Schematic diagram of the optical path of the image acquisition component;

[0032] Fig.10 for Figure 7 Schematic diagram of the three-dimensional structure of the middle mounting frame.

[0033] Reference numerals

[0034] 10-Inspection device;

[0035] 100-housing;

[0036] 110-first housing; 111-first connecting portion;

[0037] 112-key window; 113-first positioning portion;

[0038] 1131-first positioning surface; 114-third positioning portion;

[0039] 1141-third positioning surface; 115-second connecting portion;

[0040] 116-first connection window; 117-third connection portion;

[0041] 118-second connecting window; 120-second housing;

[0042] 121-light-transmitting window; 122-light-transmitting protective sheet;

[0043] 130 - first connecting groove; 140 - first connecting protrusion;

[0044] 150 - second connecting groove; 160 - second connecting protrusion;

[0045] 170-connecting tube;

[0046] 200- Mainboard;

[0047] 210-first surface; 220-second surface;

[0048] 230-first connecting circuit board; 231-first connecting terminal;

[0049] 240 - a second connecting circuit board; 241 - a second connecting terminal;

[0050] 300-button assembly;

[0051] 310-button switch; 320-button pressure plate;

[0052] 330-keyboard; 340-key through hole;

[0053] 350-button part; 360-limit part;

[0054] 370-key groove;

[0055] 400- Image acquisition system;

[0056] 410-functional circuit board; 411-third connecting terminal;

[0057] 412-isolation column; 420-light source assembly;

[0058] 421-light source circuit board; 422-light emitting device;

[0059] 430-image acquisition component; 431-beam splitter prism;

[0060] 4311-first light incident surface; 432-camera;

[0061] 433-steering prism; 440-mounting frame;

[0062] 441-first mounting surface; 445-second positioning portion;

[0063] 4451-second positioning surface; 446-connecting arm;

[0064] 4461- fourth positioning portion; 4462- fourth connecting portion;

[0065] 4463- fourth positioning surface; 4464- connecting through hole;

[0066] 500-distance sensor;

[0067] 30-dilator;

[0068] 700-operating handle; 710-lower leaf;

[0069] 720-upper leaf. DETAILED DESCRIPTION

[0070] In view of the technical problem that the inspection device in the related art is large in size, which leads to the large size of the endoscopic inspection equipment and is inconvenient to carry, the inventors have found that the reason is that the inspection device usually includes a shell, a mainboard, an image acquisition system and a key assembly located in the shell, and the image acquisition system usually relies on the change of the optical lens structure to achieve optical magnification, that is, to magnify or reduce the image to be taken by moving the lens. In this way, it is necessary to reserve space for the lens to move, and to increase the drive and power device of the lens, resulting in a large structural size of the image acquisition system, which is not conducive to the design of portable products.

[0071] In view of this, the image acquisition system of the embodiment of the present application can acquire images with different magnification effects by setting up multiple cameras with different magnifications. Compared with enlarging or reducing the image to be captured by moving the lens, the structural size of the image acquisition system can be effectively reduced, which is conducive to realizing a portable design.

[0072] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0073] The embodiment of the present application provides an endoscopic examination device, which includes an examination device 10. The endoscopic examination device can be used to examine and / or treat a preset position.

[0074] The preset position may be an open human cavity such as the oral cavity, or an exposed human surface such as the skin. For example, when inspecting and / or treating the oral cavity, the inspection device 10 may be inserted into the open oral cavity, and the inspection device 10 may acquire and process images in the oral cavity, thereby inspecting and / or treating the oral cavity. When inspecting the skin, the inspection device 10 may be placed opposite to the skin, thereby inspecting and / or treating the skin.

[0075] The preset position may also be a human cavity with a closed opening, such as a vagina. For example, when inspecting and / or treating the vagina, the vagina may be enlarged with a dilator, and then the inspection device 10 may be inserted into the opened vagina. The inspection device 10 may acquire and process images in the vagina, thereby inspecting and / or treating the vagina.

[0076] In some embodiments, the endoscopic inspection device may also include a dilator 30, and the inspection device 10 may be installed in the dilator 30. For example, the inspection device 10 may be inserted into the dilator 30, or may be screwed into the dilator 30.

[0077] The dilator 30 refers to a device that can be inserted into a human cavity with a closed opening, such as a vagina, to expand the space of the human cavity, thereby facilitating the inspection of the human cavity. Exemplarily, the dilator 30 may include an operating handle 700, a lower leaf 710, and an upper leaf 720. The operating handle 700 has a receiving cavity with an open bottom, and the top of the operating handle 700 also has a visual window. The lower leaf 710 is located below the visual window and is connected to the operating handle 700. The upper leaf 720 is located above the visual window and is rotatably connected to the operating handle 700. The upper leaf 720 can rotate relative to the operating handle 700 to open or close with the lower leaf 710. When the upper leaf 720 and the lower leaf 710 are opened, the visual window is exposed. When the upper leaf 720 and the lower leaf 710 are closed, the visual window is blocked. The inspection device 10 can be installed in the receiving cavity via the bottom end of the operating handle 700. For example, the inspection device 10 can be inserted into the accommodating cavity, or can be screwed into the accommodating cavity.

[0078] When inspecting a preset position, such as a human body cavity such as the vagina, the upper leaf 720 can be controlled to rotate relative to the operating handle 700, so as to close with the lower leaf 710. The closed upper leaf 720 and the lower leaf 710 are inserted into the preset position, and then the upper leaf 720 is controlled to rotate in the opposite direction relative to the operating handle 700, so as to open with the lower leaf 710 to expose the visual window and expand the space of the preset position. The inspection device 10 can obtain an image of the preset position through the exposed visual window, so as to inspect the preset position.

[0079] In some embodiments, the inspection device 10 may include a housing 100, a mainboard 200, an image acquisition system 400, and a key assembly 300. The housing 100 has a receiving cavity. The mainboard 200, the image acquisition system 400, and the key assembly 300 are located in the receiving cavity.

[0080] In some embodiments, the housing 100 may include a first housing 110 and a second housing 120 that are detachably connected, and the first housing 110 and the second housing 120 are arranged to form a receiving cavity. Exemplarily, the first housing 110 and the second housing 120 may both be semi-cylindrical structures, and the two semi-cylindrical structures may be interlocked to form a housing 100 having a receiving cavity. Such an arrangement can facilitate the installation of other components of the inspection device 10 in the housing 100, thereby improving the convenience of assembling and adjusting the inspection device 10.

[0081] In some embodiments, a key window 112 is further provided on the side of the first shell 110, and the key window 112 is opposite to the key assembly 300. Part of the key assembly 300 extends out of the key window 112, so that the operator can perform key operations on the key assembly 300 outside the first shell 110, thereby improving the convenience of operating the key assembly 300.

[0082] In some embodiments, there may be multiple key windows 112, and multiple key windows 112 may be arranged at intervals on the side of the first housing 110, and some key components 300 may extend from the multiple key windows 112, respectively, to divide the key component 300 into different key operation areas. Exemplarily, pressing different key operation areas may correspondingly realize different functions of the inspection device 10. Such a setting can prevent the operator from mistakenly triggering other functions when pressing the key component 300 to realize a specific function, thereby improving the convenience of operating the inspection device 10.

[0083] In some embodiments, the inner side wall of the first housing 110 may be provided with a first connection portion 111, and the first connection portion 111 is used to connect the key assembly 300. Exemplarily, the first connection portion 111 may be a columnar structure, and the first connection portion 111 may be provided with a threaded hole. There may be multiple first connection portions 111, and multiple first connection portions 111 may 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.

[0084] In some embodiments, a first positioning portion 113 may be further disposed in the first housing 110 , and the first positioning portion 113 is used to position the image acquisition system 400 .

[0085] In some embodiments, a third positioning portion 114 may be further disposed in the first housing 110 , and the third positioning portion 114 is used to position the image acquisition system 400 .

[0086] In some embodiments, a second connection portion 115 may be further provided in the first housing 110, and the second connection portion 115 is used to connect the image acquisition system 400. Exemplarily, the second connection portion 115 may be a columnar structure, and the second connection portion 115 may be provided with a threaded hole. There may be multiple second connection portions 115, and multiple second connection portions 115 may be arranged at intervals to fix the image acquisition system 400 at multiple points, thereby improving the connection strength between the image acquisition system 400 and the housing 100.

[0087] In some embodiments, 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 second housing 120. The image acquisition system 400 may acquire an image outside the housing 100 through the light-transmitting window 121. The light-transmitting window 121 may be provided with a light-transmitting protective sheet 122, which may protect the image acquisition system 400 to prevent the image acquisition system 400 from being contaminated by liquid, particles, and other impurities. An anti-reflection film layer may also be provided on the protective sheet 122 to increase the amount of light entering the image acquisition system 400, thereby improving the image quality acquired by the image acquisition system 400. 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 image quality acquired by the image acquisition system 400.

[0088] In some embodiments, a first connection groove 130 may be provided on one side of the first shell 110 and the second shell 120 facing the other. A first connection protrusion 140 may be provided on the other side of the first shell 110 and the second shell 120. Figures 5 to 8 As shown, the first connection protrusion 140 is disposed on the side of the first shell 110 facing the second shell 120. The first connection groove 130 is disposed on the side of the second shell 120 facing the first shell 110. The first connection protrusion 140 is inserted into the first connection groove 130. The first shell 110 and the second shell 120 are detachably connected by the first connection protrusion 140 and the first connection groove 130 that are inserted into each other.

[0089] In some embodiments, the housing 100 may further include a sealing member, which is located in the first connection groove 130 and between the first connection groove 130 and the first connection protrusion 140. The sealing member can seal the gap between the first connection groove 130 and the first connection protrusion 140, so that the first housing 110 and the second housing 120 are sealed and connected, thereby preventing liquid, particles and other impurities outside the housing 100 from entering the housing 100 and affecting the function of the inspection device 10.

[0090] In some embodiments, a second connection groove 150 may be provided on one side of the second end of the first shell 110 and the second end of the second shell 120 facing the other. A second connection protrusion 160 may be provided on the other side of the second end of the first shell 110 and the second end of the second shell 120. The second end of the first shell 110 and the second end of the second shell 120 are both away from the expander 30. For example Figure 5 and Figure 6As shown, the second connection groove 150 is provided at the second end of the second housing 120, and the second connection protrusion 160 is provided at the second end of the first housing 110. The second connection protrusion 160 can be inserted into the second connection groove 150. For example, the groove bottom of the second connection groove 150 can be provided with a threaded hole, and the second connection protrusion 160 can be provided with a connection through hole. When the second connection protrusion 160 is located in the second connection groove 150, the connection through hole is opposite to the threaded hole. The second connection protrusion 160 can be connected to the second connection groove 150 by a connection bolt that is penetrated in the connection through hole and screwed into the threaded hole. The first housing 110 and the second housing 120 are detachably connected by the second connection groove 150 and the second connection protrusion 160 that are inserted into each other.

[0091] In some embodiments, 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 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, and the electrical connection line may be passed through the connecting tube 170 to be electrically connected to the components in the accommodating cavity.

[0092] In some embodiments, the mainboard 200 is electrically connected to the key assembly 300. For example, the mainboard 200 may include a key function circuit, and the key function circuit has a first connection pad for electrically connecting to the key assembly 300.

[0093] In some embodiments, the mainboard 200 is electrically connected to the image acquisition system 400. Exemplarily, the mainboard 200 may further include an image function circuit, and the image function circuit has a second connection pad electrically connected to the image acquisition system 400.

[0094] In some embodiments, the main board 200 has a first surface 210 and a second surface 220 that are opposite to each other. The first connection pads may be disposed on the first surface 210 , and the second connection pads may be disposed on the second surface 220 .

[0095] In some embodiments, a first connection circuit board 230 and a second connection circuit board 240 may be respectively disposed at both ends of the main board 200 .

[0096] In some embodiments, the first connection circuit board 230 may be located on one side of the main board 200 close to 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 being indirectly connected to the housing 100.

[0097] In some embodiments, the first connection circuit board 230 may be provided with a first connection terminal 231. Figure 3, the first connection terminal 231 may be a metal contact. Figure 4 , the first connection terminal 231 can also be a USB Type-C interface. The first end of the housing 100 can be provided with a first connection window 116, and the first connection window 116 exposes the first connection terminal 231. The first connection circuit board 230 can be electrically connected to the mainboard 200 through a flexible flat cable (Flexible Flat Cable, FFC for short) or a harness. The first connection terminal 231 exposed by the first connection window 116 can be electrically connected to an external device such as a display, a computer, a surgical instrument, etc., so as to transmit electrical signals between the external device and the inspection device 10.

[0098] In some embodiments, the second connection circuit board 240 may be located on one side of the main board 200 close to the second end of the housing 100. The second connection circuit board 240 is connected to the housing 100. Figure 5 , a third connection portion 117 may be provided in the first housing 110. The third connection portion 117 may be a columnar structure, and the third connection portion 117 may be provided with a threaded hole. The second connection circuit board 240 may be provided with a connection through hole, and the connection through hole is opposite to the threaded hole. The second connection circuit board 240 may be connected to the third connection portion 117 by a connection bolt that is penetrated through the connection through hole and screwed into the threaded hole.

[0099] In some embodiments, 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 (Flexible Flat Cable, FFC for short) or a harness. The second connection terminal 241 exposed by the second connection window 118 may be electrically connected to an external device such as a display, a computer, a surgical instrument, etc., so as to transmit electrical signals between the external device and the inspection device 10.

[0100] In some embodiments, the key assembly 300 may be located on a side of the mainboard 200 facing the key window 112 , and connected to the first connecting portion 111 of the first housing 110 via an isolation column 412 .

[0101] In some embodiments, the key assembly 300 may include a key pressing plate 320, a key board 330, and at least one key switch 310. The key switch 310 is welded to the side of the main board 200 facing the key window 112. The key pressing plate 320 is located on the side of the main board 200 facing the key window 112, and is connected to the main board 200 and the housing 100. For example, the main board 200 and the key pressing plate 320 may be connected to the first connecting portion 111 of the first housing 110 through the isolation column 412. The key pressing plate 320 is provided with a key through hole 340, and the key through hole 340 is sleeved on the key switch 310. The key board 330 may include a key portion 350 and a limiting portion 360, the key portion 350 is opposite to the key switch 310, a part of the key portion 350 extends out of the key window 112, and a key groove 370 is provided on the side of the key portion 350 facing the key switch 310, and the key groove 370 is covered on the key switch 310. That is, the button portion 350 covers the button switch 310, which can protect the button switch 310, and the button switch 310 can be operated by pressing the button portion 350, which improves the convenience of the button operation. The limiting portion 360 is connected to the edge of the button portion 350 and is located between the button pressing plate 320 and the housing 100. When the button pressing plate 320 is connected to the housing 100, the limiting portion 360 is fixed between the button pressing plate 320 and the housing 100, thereby improving the convenience of fixing the button plate 330.

[0102] In some embodiments, the image acquisition system 400 may include a functional circuit board 410, a light source assembly 420, and an image acquisition assembly 430. The light source assembly 420 is electrically connected to the functional circuit board 410, and the light source assembly 420 is configured to emit light to the outside (preset position) of the housing 100 through the light transmission window 121. The image acquisition assembly 430 is electrically connected to the functional circuit board 410, and the image acquisition assembly 430 is configured to acquire an image of the outside (such as the preset position) of the housing 100 through the light transmission window 121.

[0103] When inspecting the preset position, the functional circuit board 410 controls the light source assembly 420 to emit light to the outside of the housing 100 through the light transmission window 121 to illuminate the preset position. The functional circuit board 410 controls the image acquisition assembly 430 to acquire an image of the preset position outside the housing 100 through the light transmission window 121, thereby inspecting the preset position.

[0104] In some embodiments, the light source assembly 420 may include a light source circuit board 421 and at least one light emitting device 422. The light source circuit board 421 is electrically connected to the functional circuit board 410. The light source circuit board 421 may be a flexible printed circuit (FPC), which may be directly soldered to the functional circuit board 410. At least one light emitting device 422 is connected to the light source circuit board 421, and may emit light under the action of the light source circuit board 421. Exemplarily, 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 the embodiments of the present application.

[0105] In some embodiments, the image acquisition component 430 may have a first light incident surface 4311, and 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 the light entering the image acquisition component 430. In addition, since the light source circuit board 421 surrounds at least a portion of the first light incident surface 4311, the plurality of light emitting devices 422 may be arranged along the circumference of the first light incident surface 4311 to illuminate a preset position in the circumference of the first light incident surface 4311, thereby improving the uniformity of illumination.

[0106] In some embodiments, the image acquisition component 430 includes a plurality of beam splitters 431 and a plurality of cameras 432. The plurality of beam splitters 431 are arranged in stages, and the plurality of beam splitters 431 are used to split the light beam (the light reflected at the preset position) in stages to form a plurality of light paths. The plurality of cameras 432 are respectively located on the plurality of light paths, and each camera 432 is used to acquire the image of the preset position through the corresponding light path, and the magnification of the plurality of cameras 432 is different. Exemplarily, the beam splitters 431 are arranged in a line, and each beam splitter prism 431 can split the light beam entering therein into two light beams and then output them, one of the two light beams is used as a light path, and the other is used as a light path (when the beam splitter prism is in the last stage) or enters the next beam splitter prism 431. When the plurality of cameras 432 are respectively arranged on each light path, the image of the preset position can be acquired by any camera 432. Since the magnifications of the plurality of cameras 432 are different, during the inspection process, the corresponding camera 432 can be selected to acquire the image according to the requirements for the image size. Compared with the method of enlarging or reducing the image to be captured by moving the lens, this design can effectively reduce the structural size of the image acquisition system, which is conducive to realizing a portable design.

[0107] In some embodiments, the zoom multiples of the lenses of the multiple cameras 432 are different. In this way, each camera 432 can have a different magnification, so that it can be used to obtain images with different magnification effects. In addition, in a specific implementation, the image acquisition system can also use a distance sensor to measure the distance information from the system to a preset position, so that the system control end can switch the camera according to the distance information, thereby realizing automatic focus of the camera.

[0108] In some embodiments, the sensitivity of the image sensors of the multiple cameras 432 can be increased step by step. This arrangement can improve the problem that the camera 432 cannot focus due to the low brightness of the light beam. Specifically, since the light beam needs to pass through multiple dichroic prisms 431, the brightness of the light beam will gradually decrease during the transmission process, which may cause some cameras 432 to be unable to focus, thereby causing the image obtained by these cameras 432 to be blurred and unable to meet the inspection requirements. In the case where the sensitivity of the image sensors of the multiple cameras 432 can be increased step by step, the photosensitivity of the multiple cameras 432 is increased step by step, so that the camera 432 can focus even when the brightness of the light beam is low, thereby improving the problem that the camera 432 cannot focus due to the low brightness of the light beam.

[0109] In some embodiments, the splitting ratio of the output light of the multiple beam splitting prisms 431 can be increased / decreased step by step so that the luminous flux of the multiple light paths remains basically the same. Exemplarily, the output light of each beam splitting prism 431 includes a first light beam and a second light beam, wherein the first light beam is used to form a light path, and the second light beam is used to form a light path or to be split by the next-stage beam splitting prism 431. When the ratio of the luminous flux of the first light beam and the second light beam is used as the splitting ratio of the beam splitting prism 431, the splitting ratio of the output light of the beam splitting prism 431 increases step by step, so that the luminous flux originally belonging to the previous stage light path is distributed to at least part of the subsequent stage light path (located on the light path of the output light of the previous stage light path), thereby improving the problem that the camera 431 cannot focus due to low light beam brightness.

[0110] In some embodiments, the brightness of the light emitting device 422 is adjustable. For example, the light source circuit board 421 is configured to be able to adjust the brightness of the light emitting device 422. When different cameras 432 are used to acquire images, the brightness of the light emitting device 422 can be adjusted by the light source circuit board 421, thereby avoiding the problem that the camera 432 cannot focus due to low light beam brightness.

[0111] In some embodiments, the light emitting device 422 may be provided with a condenser. Exemplarily, the light source assembly 420 may further include a condenser, which is disposed outside the light emitting device 422. In this way, a condensing effect can be achieved, so that the brightness of the preset position is increased, and accordingly, the brightness of the light beam from the preset position is also increased as a whole, thereby improving the problem that the camera 432 cannot focus due to low light beam brightness.

[0112] In some embodiments, the image acquisition component 430 may further include a plurality of steering prisms 433, and the plurality of steering prisms 431 are respectively located on a plurality of optical paths and respectively located between the corresponding beam splitter prisms 431 and the camera 432. The steering prism 433 can change the direction of the optical path and fold the optical path to shorten the distance between the beam splitter prism 431 and the camera 432, thereby reducing the space occupied by the image acquisition component 430, which is conducive to the miniaturization of the inspection device 10.

[0113] In some embodiments, the steering angle α of the steering prism 434 may be 25° to 30°, for example, the steering angle α may 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 can be understood that the steering prism 434 may also be a steering prism of other forms, and the steering angles of other forms of steering prisms may also be other values, which will not be described in detail in the embodiments of the present application.

[0114] In some embodiments, the image acquisition system 400 may further include a mounting frame 440 . The light source assembly 420 and the image acquisition assembly 430 are mounted on the mounting frame 440 .

[0115] During the process of assembling and adjusting 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 firstly assembled and adjusted on the mounting frame 440, and then the assembled light source assembly 420, the image acquisition assembly 430 and the mounting frame 440 are mounted on the housing 100. Such an arrangement can improve the relative position 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 image quality acquired by the inspection device 10.

[0116] In some embodiments, the mounting frame 440 may have a first mounting surface 441 opposite to the light-transmitting window 121 . The light source assembly 420 is disposed on the first mounting surface 441 .

[0117] In some embodiments, the mounting frame 440 may be provided with a second positioning portion 445 corresponding to the first positioning portion 113 provided on the housing 100, and the second positioning portion 445 cooperates with the first positioning portion 113 to achieve the positioning of the mounting frame 440. Exemplarily, 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. The mounting frame 440 may be provided with a second positioning portion 445 on one side of the first end of the housing 100, and the second positioning portion 445 is provided with a second positioning surface 4451 facing the housing 100, and the second positioning surface 4451 is in contact with the first positioning surface 1131, so as to position the mounting frame 440 and the housing 100, thereby improving the relative position accuracy between the mounting frame 440 and the housing 100.

[0118] In some embodiments, the first positioning surface 1131 and the second positioning surface 4451 may both be stepped surfaces, and the matching stepped surfaces may 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.

[0119] In some embodiments, the mounting frame 440 may be provided with a fourth positioning portion 4461 and a fourth connecting portion 4462 respectively corresponding to the third positioning portion 114 and the second connecting portion 115 provided on the housing 100. The fourth positioning portion 4461 cooperates with the third positioning portion 114 to achieve the positioning of the mounting frame 440. The fourth connecting portion 4462 cooperates with the second connecting portion 115 to achieve the connection between the mounting frame 440 and the housing 100. Exemplarily, the third positioning portion 114 has a third positioning surface 1141. The second connecting portion 115 is provided with a threaded hole. The mounting frame 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 one side facing the housing 100, and 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 frame 440 and the housing 100, further improving the relative position accuracy between the mounting frame 440 and the housing 100. The fourth connecting portion 4462 is provided with a connecting through hole 4464, and the connecting through hole 4464 is opposite to the threaded hole. The fourth connecting portion 4462 can be connected to the housing 100 by a connecting bolt that is penetrated through the connecting through hole 4464 and screwed into the threaded hole.

[0120] In some implementations, the functional circuit board 410 is specifically configured to control any camera 432 to acquire an image of a preset location.

[0121] In some embodiments, the functional circuit board 410 is provided with a third connection terminal 411, and the third connection terminal 411 is used to electrically connect to an external device. Exemplarily, the functional circuit board 410 can be provided with a third connection terminal 411, and the third connection terminal 411 can be electrically connected to an external device through an electrical connection line inserted into the connection barrel 170.

[0122] In some embodiments, the image acquisition system 400 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 a preset position.

[0123] When checking the preset position, the functional circuit board 410 controls the distance sensor 500 to transmit a distance measurement signal to the outside of the housing 100 through the light-transmitting window 121 to measure the distance of the preset position.

[0124] Exemplarily, the distance sensor 500 may be a laser distance measuring sensor or the like.

[0125] Exemplarily, the distance sensor 500 may be mounted on a first mounting surface of a mounting frame.

[0126] It is understandable that the distance sensor 500 may also be other types of distance sensors, such as an infrared distance sensor or an ultrasonic distance sensor, etc. The distance sensor 500 may also be installed at other positions of the inspection device 10, which will not be described in detail in the embodiment of the present application.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An image acquisition system, comprising a light source assembly and an image acquisition assembly, wherein the light source assembly is configured to emit light to a preset position, and the image acquisition assembly is configured to acquire an image of the preset position, characterized in that: The image acquisition component includes a plurality of beam splitters and a plurality of cameras; wherein, The plurality of beam splitting prisms are arranged in stages, and the plurality of beam splitting prisms are used to split the light beam in stages to form a plurality of light paths; The plurality of cameras are respectively located on the plurality of optical paths, and each camera is used to acquire an image of the preset position through the corresponding optical path; The magnifications of the plurality of cameras are different.

2. The image acquisition system according to claim 1, characterized in that: The zoom ratios of the lenses of the plurality of cameras are different.

3. The image acquisition system according to claim 1, characterized in that: The sensitivity of the image sensors of the plurality of cameras increases step by step.

4. The image acquisition system according to claim 1, characterized in that: The splitting ratio of the output light of the plurality of the splitting prisms increases / decreases step by step, so that the luminous flux of the plurality of the light paths remains basically consistent.

5. The image acquisition system according to claim 1, characterized in that: The light source assembly includes a light emitting device, which is used to emit light toward the preset position, and the brightness of the light emitting device is adjustable.

6. The image acquisition system according to claim 5, characterized in that: The light source assembly further comprises a condenser, and the condenser is arranged around the light emitting device.

7. The image acquisition system according to claim 1, characterized in that: The image acquisition component further includes a plurality of steering prisms, wherein the plurality of steering prisms are respectively located on the plurality of optical paths and respectively located between the corresponding beam splitting prisms and the cameras.

8. The image acquisition system according to claim 1, characterized in that: The image acquisition system further comprises a mounting frame, and the light source assembly and the image acquisition assembly are both arranged on the mounting frame.

9. The image acquisition system according to claim 1, characterized in that: The image acquisition system further includes a functional circuit board, which is electrically connected to the image acquisition component. The functional circuit board is specifically configured to control any of the cameras to acquire the image of the preset position.

10. The image acquisition system according to claim 9, characterized in that: The functional circuit board is provided with connection terminals, and the connection terminals are used for electrically connecting with external devices.

11. The image acquisition system according to claim 1, characterized in that: The image acquisition system further includes a distance sensor, and the distance sensor is used to measure the distance of the preset position.

12. An inspection device, characterized in that: Comprising the image acquisition system as described in any one of claims 1-11.

13. The inspection device according to claim 12, characterized in that: The inspection device further comprises a shell having a containing cavity and a light-transmitting window. The image acquisition system is arranged in the containing cavity, and the image acquisition system acquires an image of the outside of the shell through the light-transmitting window.

14. The inspection device according to claim 13, characterized in that: The inspection device also includes a main board disposed in the accommodating cavity and electrically connected to the image acquisition system, and a key assembly partially located in the accommodating cavity and electrically connected to the main board.

15. An endoscopy device, characterized in that: Comprising the inspection device as described in any one of claims 12-14.

16. The endoscopic inspection device according to claim 15, characterized in that The endoscopic inspection apparatus further comprises a dilator, wherein the inspection device is disposed in the dilator.

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