Wide-angle camera and endoscope

Abstract

The application discloses a wide-angle camera and an endoscope. The wide-angle camera comprises a first image collecting element and a plurality of second image collecting elements. The first image collecting element is used for collecting a first image. The plurality of second image collecting elements are distributed along the circumference of the first image collecting element and are arranged at the outer periphery of the first image collecting element. The image collecting directions of the plurality of second image collecting elements and the image collecting direction of the first image collecting element form a preset included angle. The plurality of second image collecting elements are used for collecting corresponding second images respectively. The plurality of second images are located in any direction of the outer periphery of the first image, and the plurality of second images and the first image have at least a partial overlapping area, so that the first image and the plurality of second images are spliced to form a display image. The application solves the technical problem that the lens field angle is small and the image collecting area is limited in a neuroendoscope.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a wide-angle camera and endoscope. Background Technology

[0002] The flexible neuroendoscopy tube, connected to a neuroendoscope via a remotely controllable flexible tube, is a flexible endoscope used for minimally invasive surgery inside the brain. Its lens is equipped with a high-definition camera and light source, which can transmit images of the inside of the brain to an external monitor, providing surgeons with a clear view to treat various intraventricular diseases.

[0003] In existing technologies, the camera of a curved neuroendoscopy is located at the very front of the curved neuroendoscopy. Due to its installation position, the camera's field of view is limited, and it can only capture images within a certain range directly in front of the lens of the curved neuroendoscopy. For example, wide-angle lenses, fisheye lenses, and rotatable lenses can only capture images in the frontal field of view and part of the lateral field of view. Moreover, the images at the edge of the field of view are severely distorted, and image processing software and other means are required to correct them and reduce the resolution before they can be used. Not only is the image display accuracy poor, but the image adjustment is also cumbersome, and the adjusted image may still have poor display quality.

[0004] Existing neuroendoscopy (especially traditional optical endoscopes) mostly uses lenses with fixed angles (such as 0°, 30° or 70°). Due to limitations in the physical size of the lens and optical design, most endoscopes have a small field of view, resulting in blind spots in the lateral and posterior fields of view. In complex surgical environments (such as anatomical areas), it is necessary to frequently adjust the position of the lens to cover the target area, which is not only inconvenient to operate, but also greatly prolongs the operation time, reduces efficiency, and brings certain risks to the operation.

[0005] There is currently no effective solution to the problem of the small field of view and limited image acquisition area in neuroendoscopy.

[0006] Therefore, this invention proposes a multi-camera and endoscope to overcome the shortcomings of the prior art. Summary of the Invention

[0007] The purpose of this invention is to provide a wide-angle camera and endoscope. By adding multiple image acquisition elements, the lens of the endoscope has a wide-angle function, which not only provides a larger image acquisition angle, but also can be switched in various directions according to actual needs. It is easy to operate and can provide the surgeon with a wider and clearer observation perspective.

[0008] The objective of this invention can be achieved through the following methods:

[0009] This invention provides a wide-angle camera, the wide-angle camera comprising:

[0010] A first image acquisition element, wherein the first image acquisition element is used to acquire a first image;

[0011] Multiple second image acquisition elements are distributed at intervals around the outer periphery of the first image acquisition element along the circumferential direction of the first image acquisition element, and the image acquisition direction of the multiple second image acquisition elements forms a preset angle with the image acquisition direction of the first image acquisition element. The multiple second image acquisition elements are used to acquire corresponding second images.

[0012] The multiple second images are located in any direction around the outer periphery of the first image, and there is at least a partial overlap between the multiple second images and the first image, so that the first image and the multiple second images are stitched together to form a display image.

[0013] In a preferred embodiment of the present invention, the number of the second image acquisition elements is greater than or equal to three, and the plurality of the second image acquisition elements are spaced apart and evenly distributed on the outer periphery of the first image acquisition element.

[0014] The plurality of second image acquisition elements can acquire at least three second images, and the three second images are respectively distributed in any direction on the outer periphery of the first image.

[0015] In a preferred embodiment of the present invention, the first image acquisition element is a main camera, and the plurality of second image acquisition elements are each a secondary camera;

[0016] Along the axial direction of the main camera, the image acquisition ends of the plurality of secondary cameras are respectively located behind the image acquisition end of the main camera, and the axis of the secondary cameras is inclined from the direction away from the secondary cameras to the direction of the axis of the main camera, so that there is an overlapping area between the edge of the second image and the edge of the first image.

[0017] In a preferred embodiment of the present invention, the number of the second image acquisition elements is greater than or equal to four, and the plurality of the second image acquisition elements are spaced apart and evenly distributed on the outer periphery of the first image acquisition element.

[0018] The plurality of second image acquisition elements can acquire at least four second images, which are distributed in any direction on the outer periphery of the first image.

[0019] In a preferred embodiment of the present invention, the first image acquisition element is the main objective lens, and the plurality of second image acquisition elements are each a secondary objective lens;

[0020] Along the axial direction of the main objective lens, the image acquisition ends of a plurality of secondary objective lenses are respectively located behind the image acquisition end of the main objective lens, and the axis of the secondary objective lens is inclined from the direction away from the secondary objective lens to the direction of the axis of the main objective lens, so that there is an overlapping area between the edge of the second image and the edge of the first image;

[0021] The wide-angle camera also includes a photoelectric conversion element located behind the main objective lens and the plurality of secondary objective lenses. The photoelectric conversion element is used to receive optical signals collected by the main objective lens and the plurality of secondary objective lenses, and convert the optical signals into the first image and the second image.

[0022] In a preferred embodiment of the present invention, the first image acquisition element is a main objective lens, and the plurality of second image acquisition elements are beam splitters.

[0023] Along the axial direction of the main objective lens, a plurality of beam splitters are respectively located behind the main objective lens;

[0024] The wide-angle camera also includes a photoelectric conversion element located behind the main objective lens and the plurality of beam splitters. The main objective lens and the plurality of beam splitters are used to project light of different wavelengths onto the photoelectric conversion element. The photoelectric conversion element is used to receive the optical signals transmitted by the main objective lens and the plurality of beam splitters and convert the optical signals into the first image and the second image.

[0025] In a preferred embodiment of the present invention, the wide-angle camera further includes a tube body, a first mounting base is provided at the front end of the tube body and inside therein, and a second mounting base is provided inside the tube body and behind the first mounting base.

[0026] Multiple recesses are formed circumferentially on the outer wall of the tube located in front of the second mounting base. An opening is located on the tube behind the recesses. The multiple recesses correspond one-to-one with the multiple openings, and the recesses communicate with the front of the tube and the corresponding openings. The first image acquisition element is disposed on the first mounting base, and the image acquisition end of the first image acquisition element faces the front of the tube. Multiple second image acquisition elements are respectively disposed on the second mounting base, and the image acquisition ends of the multiple second image acquisition elements extend to the corresponding openings.

[0027] In a preferred embodiment of the present invention, the first mounting base has a first slot, and the first image acquisition element is snapped into the first slot.

[0028] And / or, the second mounting base has a plurality of second slots, and a plurality of the second image acquisition elements are respectively snapped into the corresponding second slots.

[0029] In a preferred embodiment of the present invention, the outer wall of the first mounting base has a positioning protrusion, and the first mounting base is engaged with the positioning groove on the inner wall of the tube through the positioning protrusion.

[0030] And / or, the outer wall of the first mounting base has an adhesive groove, and the first mounting base is bonded and fixed to the inner wall of the tube by injecting adhesive into the adhesive groove.

[0031] In a preferred embodiment of the present invention, the wide-angle camera further includes a cover, the cover being provided with a light-transmitting cover, the cover being disposed at the front end of the tube body so as to cover the first image acquisition element through the light-transmitting cover.

[0032] In a preferred embodiment of the present invention, the end cap has a cylindrical end cap body with openings at both ends. One end of the end cap body is connected to the front end of the tube body. A first annular groove and a second annular groove in a stepped shape are formed on the inner wall of the other end of the end cap body. The first annular groove is arranged around the outer periphery of the second annular groove. The light-transmitting cover is embedded in the second annular groove, and solder is added in the first annular groove to weld and fix the light-transmitting cover to the inner wall of the tube body.

[0033] In a preferred embodiment of the present invention, an illumination source is provided on the tube body located behind the first image acquisition element and the second image acquisition element, and the illumination source illuminates the image acquisition areas of the first image acquisition element and the second image acquisition element.

[0034] This invention provides an endoscope, the endoscope comprising:

[0035] The aforementioned wide-angle camera;

[0036] Operating handle;

[0037] The wide-angle camera is connected to the operating handle via the lens tube.

[0038] In a preferred embodiment of the present invention, the operating handle has a plurality of buttons, which can be used to control the display of the first image, or to control the display of the second image, or to control the switching between different second images, or to control the storage of the first image and / or the second image.

[0039] As described above, the features and advantages of the wide-angle camera and endoscope of the present invention are:

[0040] Multiple second image acquisition elements are arranged at circumferential intervals around the outer periphery of the first image acquisition element. The first image acquisition element acts as the main element, acquiring the first image near the center position, while the multiple second image acquisition elements act as auxiliary elements, respectively acquiring multiple second images located in any direction around the first image. The multiple second images have at least a partial overlap with the first image, so that the first image and the multiple second images can be stitched together to form a whole display image, thereby expanding the image acquisition area and realizing a wide-angle function. The wide-angle camera of the present invention can not only provide a larger image acquisition angle, but also control the first image acquisition element and / or different second image acquisition elements to acquire images according to actual needs. Therefore, the images acquired in different directions can be switched, making operation convenient. When this wide-angle camera is applied to endoscopy, it can provide the surgeon with a wider and clearer observation perspective. Attached Figure Description

[0041] The accompanying drawings are intended only to illustrate and explain the present invention and do not limit the scope of the invention.

[0042] in:

[0043] Figure 1 This is a perspective view of the wide-angle camera of the present invention;

[0044] Figure 2 This is one of the left views of the wide-angle camera of the present invention;

[0045] Figure 3 This is a front cross-sectional view of the end cap in the wide-angle camera of the present invention;

[0046] Figure 4 This is a perspective view of the first image acquisition element in the wide-angle camera of the present invention;

[0047] Figure 5 This is a perspective view of the second image acquisition element in the wide-angle camera of the present invention;

[0048] Figure 6 One of the perspective views of the first mounting base in the wide-angle camera of the present invention;

[0049] Figure 7 This is a front cross-sectional view of the first mounting base in the wide-angle camera of the present invention;

[0050] Figure 8 This is one of the left views of the first mounting base in the wide-angle camera of the present invention;

[0051] Figure 9This is one of the front cross-sectional views of the wide-angle camera of the present invention;

[0052] Figure 10 This is a schematic diagram of the display area of ​​the display screen in the endoscope of the present invention;

[0053] Figure 11 This is one of the schematic diagrams of the display area captured by the wide-angle camera of this invention;

[0054] Figure 12 This is a second left view of the wide-angle camera of the present invention;

[0055] Figure 13 This is a second perspective view of the first mounting base in the wide-angle camera of the present invention;

[0056] Figure 14 This is a second left view of the first mounting base in the wide-angle camera of the present invention;

[0057] Figure 15 This is a second frontal cross-sectional view of the wide-angle camera of the present invention;

[0058] Figure 16 This is a schematic diagram showing the relative positions of the main objective lens, the secondary objective lens, and the photoelectric conversion element in the wide-angle camera of the present invention;

[0059] Figure 17 This is a second schematic diagram of the area of ​​the display image captured by the wide-angle camera of this invention;

[0060] Figure 18 This is a schematic diagram showing the relative positions of the main objective lens, beam splitter, and photoelectric conversion element in the wide-angle camera of the present invention;

[0061] Figure 19 This is a block diagram illustrating the principle of image display in the wide-angle camera of the present invention, consisting of the main objective lens, beam splitter, and photoelectric conversion element working together.

[0062] Figure 20 This is a schematic diagram of the lighting source in the wide-angle camera of the present invention;

[0063] Figure 21 This is a partially enlarged view of the operating handle in the endoscope of the present invention;

[0064] Figure 22 This is one of the structural schematic diagrams of the endoscope of the present invention;

[0065] Figure 23 This is the second schematic diagram of the endoscope of the present invention.

[0066] The reference numerals in the accompanying drawings of this invention are:

[0067] 1. First image acquisition element; 2. Second image acquisition element;

[0068] 3. Photoelectric conversion element; 4. Tube body;

[0069] 401. Recess; 402. Opening;

[0070] 5. First mounting base; 501. First slot;

[0071] 502. Positioning protrusion; 503. Glue groove;

[0072] 504, positioning hole; 6, second mounting base;

[0073] 601. Second slot; 7. End cap;

[0074] 701. Translucent protective cover; 702. Head body;

[0075] 7021, First annular groove; 7022, Second annular groove;

[0076] 8. Lighting source; 801. LED strip;

[0077] 802, LED bead; 100, First image;

[0078] 200, Second image; 1000, Wide-angle camera;

[0079] 2000, Operating handle; 2001, Buttons;

[0080] 3000, endoscope tube; 4000, display screen;

[0081] 4001, First image display area; 4002, Second image display area. Detailed Implementation

[0082] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

[0083] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0084] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0085] like Figures 1 to 21 As shown, the present invention provides a wide-angle camera, which includes a first image acquisition element 1 and a plurality of second image acquisition elements 2. The first image acquisition element 1 is used to acquire a first image 100. The plurality of second image acquisition elements 2 are spaced apart and evenly distributed around the outer periphery of the first image acquisition element 1, and are respectively used to acquire corresponding second images 200. The plurality of second images 200 are located in any direction around the outer periphery of the first image 100, and there is at least a partial overlap between the plurality of second images 200 and the first image 100, so that the first image 100 and the plurality of second images 200 can be stitched together to form a display image.

[0086] In this configuration, along the image acquisition direction of the first image acquisition element 1, the image acquisition ends of multiple second image acquisition elements 1 are respectively located behind the image acquisition ends of the first image acquisition element 1, and the image acquisition directions of the multiple second image acquisition elements 2 form a preset angle with the image acquisition direction of the first image acquisition element 1. This ensures that the second image 200 acquired by the second image acquisition element 2 is located exactly on the outer periphery of the first image 100. Furthermore, by adjusting the appropriate preset angle, it can be ensured that there is a partial overlap between the first image 100 and the second image 200, thereby enabling the first image 100 and the second image 200 to be stitched together to form a complete display image, thereby increasing the field of view.

[0087] In this invention, multiple second image acquisition elements 2 are arranged at circumferential intervals around the outer periphery of the first image acquisition element 1. The first image acquisition element 1 acts as the main element to acquire the first image located near the center of the field of view, while the multiple second image acquisition elements 2 act as auxiliary elements to acquire multiple second images located around the outer periphery of the first image (i.e., near the edge of the field of view). The multiple second images have at least a partial overlap with the first image, so that the first image and the multiple second images can be stitched together to form a complete display image. Thus, by cooperating with the first image acquisition element 1 and the multiple second image acquisition elements 2, the purpose of expanding the image acquisition area is achieved, realizing a wide-angle function. The wide-angle camera of this invention can not only provide a larger image acquisition angle, but also control the first image acquisition element 1 and / or different second image acquisition elements 2 to acquire images according to actual needs. Therefore, the images acquired in different directions can be switched, making operation convenient. When this wide-angle camera is applied to endoscopy, it can provide the surgeon with a wider and clearer observation perspective.

[0088] The following provides some specific embodiments that can implement the present invention.

[0089] Implementation Method 1

[0090] like Figures 1 to 11 As shown, in this embodiment, both the first image acquisition element 1 and the second image acquisition element 2 are cameras, that is, the first image acquisition element 1 is the main camera, and the multiple second image acquisition elements 2 are the secondary cameras. The multiple secondary cameras are spaced apart and evenly distributed around the outer periphery of the main camera. In the axial direction of the main camera, the image acquisition ends (i.e., the lens positions of the secondary cameras) of the multiple secondary cameras are respectively located behind the image acquisition ends (i.e., the lens positions of the main camera) of the main camera, and the axis of the secondary cameras is inclined from the direction away from the secondary cameras to the direction closer to the secondary cameras towards the axis of the main camera, so that there is an overlapping area between the edge of the second image 200 acquired by each secondary camera and the edge of the first image 100 acquired by the main camera.

[0091] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, there is one main camera and three secondary cameras; however, the number of secondary cameras can be greater than three. The three secondary cameras can capture three second images 200, which are distributed in any direction around the periphery of the first image 100. Preferably, the three second images 200 are distributed at the lower left, lower right, and directly above the first image 100. The angle between the three secondary cameras and the main camera in the circumferential direction is 120°. The main camera, as the primary field of view, provides 4K wide-angle imaging (120° field of view) of the main field of view area directly in front; the main camera supports HDR mode, which can enhance the ability to capture details in areas of contrast. The three secondary cameras, as a supplement to the field of view of the main camera, can capture images within a 180° to 240° field of view in front of the wide-angle camera, and can integrate the captured first image 100 and second image 200 onto the surgeon's display screen 4000 using image software, providing the surgeon with a wider field of view.

[0092] Furthermore, such as Figure 9 As shown, the axis of the secondary cameras is tilted at an angle of 30° to 45° from the direction closest to the secondary cameras to the direction furthest from the secondary cameras towards the axis of the main camera. This layout allows the second images 200 captured by each secondary camera to form an overlapping area (the width of the overlapping area can be 5mm) with the first image 100 captured by the main camera, ensuring seamless stitching of the first image 100 and the second image 200. The field of view coverage of the three secondary cameras is shown in Table 1 below:

[0093] Field of view coverage direction Field of view Supplementary functions of the secondary camera First camera lower left 90° Used to cover blind spots in surgical instrument operation. Second camera bottom right 90° Used to cover blind spots in surgical instrument operation. Third camera Directly above 90° Used for observing blood vessels at the top of the patient's cavity

[0094] Table 1

[0095] The main camera, in conjunction with three secondary cameras, can capture images within a field of view of 180° to 240°. The main camera is a 120° wide-angle camera, and each of the three secondary cameras has a 90° field of view. Using existing image fusion methods, the overlapping area between the first image 100 and the second image 200 can be fused, resulting in a total field of view coverage of 240°.

[0096] In an optional embodiment of the present invention, such as Figures 1 to 9 As shown, the wide-angle camera also includes a tube body 4. A first mounting base 5 is fixedly disposed at the front end of the tube body 4 and inside it. The main camera is disposed on the first mounting base 5, with the image acquisition end of the main camera facing the front of the tube body 4. The first mounting base 5 is used to fix the main camera, ensuring that the optical axis of the main camera is strictly aligned with the axis of the tube body 4, and that they are on the same straight line. The main camera and the first mounting base 5 can be fixed together by a slot and a boss.

[0097] Furthermore, such as Figures 1 to 9 As shown, a second mounting base 6 is fixedly installed inside the tube body 4 and behind the first mounting base 5. Multiple arc-shaped recesses 401 are formed circumferentially on the outer wall of the tube body 4 in front of the second mounting base 6. An opening 402 is located on the tube body 4 behind the recesses 401. Each recess 401 corresponds to one opening 402, and the recesses 401 communicate with the front of the tube body 4 and the corresponding opening 402. Multiple secondary cameras are respectively mounted on the second mounting base 6, and the image acquisition ends of the multiple secondary cameras extend to the corresponding openings 402, allowing the secondary cameras to acquire the second image 200 through the openings 402. The second mounting base 6 supports three secondary cameras, achieving a 120° annular symmetrical layout around the main camera. The three secondary cameras cover the blind spot outside the main camera's field of view, fitting the compact space of the tube body 4. In the actual molding process, a laser cut can be made along the circumference of the outer wall of the tube body 4 to form a slit. The outer wall part of the tube body 4 in front of the slit is bent towards the inside of the tube body 4 to form an arc-shaped concave part 401. The back of the slit is connected to the concave part 401, and the opening 402 is formed at the slit position. It is necessary to ensure that the size of the opening 402 can match the outer diameter of the secondary camera (tolerance is ±0.05mm) to avoid friction damage to the secondary camera. Moreover, through the accurate positioning of the secondary camera, it is ensured that the display image formed by the first image 100 and multiple second images 200 is seamlessly spliced.

[0098] In an optional embodiment of the present invention, such as Figures 6 to 9 As shown, the first mounting base 5 has a first slot 501 in the middle, and the main camera is snapped into the first slot 501. The first slot 501 can be, but is not limited to, a conical slot. The main camera being snapped into the first slot 501 can lock the installation position, ensuring that the optical axis of the main camera is strictly aligned with the axis of the tube 4, and can also ensure the stability of the main camera installation, preventing positional displacement due to vibration or other reasons during surgery.

[0099] Furthermore, such as Figure 6 and Figure 8 As shown, multiple positioning protrusions 502 are provided at intervals along the circumference on the outer wall of the first mounting base 5, and multiple corresponding positioning grooves are provided at corresponding positions on the inner wall of the tube body 4. The first mounting base 5 is engaged with the positioning grooves on the inner wall of the tube body 4 through the positioning protrusions 502, which facilitates the disassembly and assembly of the first mounting base 5 and ensures the stability of the main camera installation.

[0100] Furthermore, such as Figure 6 and Figure 8As shown, multiple adhesive grooves 503 are provided at intervals along the circumference on the outer wall of the first mounting base 5. Adhesive is injected into the adhesive grooves 503 to bond and fix the first mounting base 5 to the inner wall of the tube body 4, thereby further ensuring the stability of the main camera installation.

[0101] In an optional embodiment of the present invention, such as Figure 9 As shown, multiple second slots 601 are provided along the circumference of the outer wall of the second mounting base 6, and multiple secondary cameras are respectively snapped into the corresponding second slots 601. Among them, the second slots 601 are obliquely extending grooves to ensure the oblique installation of the secondary cameras.

[0102] In an optional embodiment of the present invention, such as Figure 8 As shown, a plurality of positioning holes 504 are provided on the first mounting base 5 facing the second mounting base 6. Each of the positioning holes 504 corresponds to a plurality of secondary cameras. Corresponding positioning blocks can be set on the second mounting base 6 or the plurality of secondary cameras. By snapping each positioning block into the corresponding positioning hole 504, the position of the second mounting base 6 can be positioned, thereby ensuring the accurate positional relationship between the plurality of secondary cameras and the main camera.

[0103] In an optional embodiment of the present invention, such as Figure 1 , Figure 3 and Figure 9 As shown, the wide-angle camera also includes a cap 7, on which a light-transmitting cover 701 is provided. The cap 7 is located at the front end of the tube body 4, so that the light-transmitting cover 701 covers the main camera, achieving the effect of preventing contaminants (such as body fluids, tissue debris, etc.) from contaminating the camera and preventing dust during use. In addition, since the cap 7 and the tube body 4 are connected in a sealed manner, it is easier to sterilize the wide-angle camera by high temperature and high pressure sterilization, plasma sterilization, etc. The light-transmitting cover 701 may be made of glass, but is not limited to glass. Further, in an optional embodiment of the present invention, the light-transmitting cover 701 may be made of sapphire material, so that the light-transmitting cover 701 has both high light transmittance (greater than 95%) and scratch resistance. The thickness of the light-transmitting cover 701 may be, but is not limited to, 0.6mm. After installation, its surface is polished to ensure a smooth surface.

[0104] Furthermore, the inner surface of the light-transmitting cover 701 can be plated with black chrome to achieve the effect of blocking stray light pollution.

[0105] Specifically, such as Figure 1 , Figure 3 and Figure 9As shown, the end cap 7 has a cylindrical end cap body 702 with openings at both ends. One end of the end cap body 702 can be fixed to the front end of the tube body 4 by laser welding to ensure the airtightness and torsional resistance of the connection between the end cap 7 and the tube body 4. The inner wall of the other end of the end cap body 702 has a stepped first annular groove 7021 and a second annular groove 7022. The first annular groove 7021 is arranged around the outer periphery of the second annular groove 7022. When installing the light-transmitting cover 701, the light-transmitting cover 701 is first embedded in the second annular groove 7022, and then metal solder is added to the first annular groove 7021 to weld and fix the light-transmitting cover 701 to the inner wall of the tube body 4.

[0106] Furthermore, both the first mounting base 5 and the second mounting base 6 can be machined from engineering plastics. When the end cap 7 is installed, the end cap 7 and the first mounting base 5 can be fixed together by a snap-fit ​​structure. The cooperation between the end cap 7 and the first mounting base 5 can also play a role in positioning the main camera, ensuring that the optical axis of the main camera is strictly aligned with the axis of the tube body 4.

[0107] In addition, such as Figure 4 As shown, the image acquisition end of the main camera is hemispherical, thus forming rounded corners at the end of the main camera, which makes it easy to smoothly insert the main camera into the middle space of the end cap 7 when installing it, and facilitates disassembly and assembly.

[0108] In an optional embodiment of the present invention, such as Figure 20 As shown, an illumination source 8 is installed on the tube 4 located behind the main camera and the secondary camera. During use, the image acquisition areas of the main camera and the secondary camera can be illuminated by the illumination source 8. There are multiple illumination sources 8, which can be distributed in a ring around the circumference of the tube 4, thereby achieving the effect of providing uniform shadowless illumination for the surgeon.

[0109] Furthermore, such as Figure 20 As shown, the lighting source 8 can be divided into multiple light strips 801 along the length of the tube 4, and multiple lamp beads 802 are spaced apart on each light strip 801 to meet the lighting requirements during the operation.

[0110] Specifically, the lighting source 8 can be equipped with four light strips 801 along the length of the tube body 4, and each light strip 801 is equipped with three LED beads 802. The brightness of the LED beads 802 can be dynamically adjusted according to the exposure parameters of the main camera and the secondary camera through existing PWM dimming technology to eliminate reflection and overexposure.

[0111] In an optional embodiment of the present invention, a heat-conducting layer (not shown) is provided on the inner wall of the tube body 4, which can conduct the heat generated inside the tube body 4 by the main camera and the secondary camera to the surface of the tube body 4, thereby improving heat dissipation efficiency. The heat-conducting layer may be, but is not limited to, a heat-conducting copper sheet.

[0112] During use, the wide-angle camera of the present invention, such as Figure 21 As shown, the camera can be controlled via the handle 2000. The main camera and different secondary cameras can be switched using the buttons 2001 on the handle 2000 to provide a clear view from different positions. Similarly, only the image from one camera (main camera or secondary camera) can be displayed, thus allowing for a clearer image to be shown on the limited display screen 4000. For example: Figure 11 As shown, Mode 1 is a panoramic mode that merges the first image 100 and the second image 200 for display, suitable for surgical path planning scenarios; Mode 2 is a main camera single-view mode, using the main camera for 4K high-definition focusing to display the image of the core area; Mode 3 is a secondary camera switching mode, which can cycle through different secondary camera display perspectives for exploring hidden structures on the sides of the core area. Figure 10 As shown, this is the first image display area 4001 displayed by the main camera and the second image display area 4002 displayed by multiple secondary cameras on the display screen 4000.

[0113] Specifically, the operating handle 2000 can integrate a three-way joystick button (up / down / confirm button), and the surface of the operating handle 2000 is covered with medical-grade silicone to support aseptic operation;

[0114] The corresponding relationships for mode switching are shown in Table 2 below:

[0115]

[0116] Table 2

[0117] The specific steps for implementing the panoramic display mode are as follows:

[0118] Data synchronization: The main camera and three secondary cameras output image data simultaneously;

[0119] Real-time stitching: The FPGA chip performs pixel-level alignment of four video streams and merges them into a single 4K panoramic image;

[0120] Dynamic optimization: Adaptive HDR algorithm is used to balance the exposure of each area and eliminate the brightness difference at the stitching seam between different images.

[0121] Display effect: as shown Figure 10As shown, the center of the screen 4000 displays the 120° wide-angle core area of ​​the main camera (i.e., the first image display area 4001); the outer ring area is provided by three secondary cameras with a 90° field of view (i.e., the second image display area 4002), and they are seamlessly spliced ​​together, with a total coverage angle of 240°.

[0122] For the main camera single-display mode, a hardware-level switch is performed, shutting down the power supply circuit of the secondary camera through the main control board, and only retaining the data channel and power supply of the main camera; the main camera exclusively uses processor resources and enables 4K resolution and 60fps frame rate for image output.

[0123] The secondary camera switching mode allows you to switch between the three secondary cameras sequentially by briefly pressing the up or down button.

[0124] Implementation Method 2

[0125] like Figure 1 , Figure 3 , Figures 12 to 17 As shown, in this embodiment, both the first image acquisition element 1 and the second image acquisition element 2 are objective lenses, i.e., the first image acquisition element 1 is the main objective lens, and the multiple second image acquisition elements 2 are secondary objective lenses. The multiple secondary objective lenses are spaced apart and evenly distributed on the outer periphery of the main objective lens. In the axial direction of the main objective lens, the image acquisition ends (i.e., the front ends of the secondary objective lenses) of the multiple secondary objective lenses are respectively located behind the image acquisition ends (i.e., the front ends of the main objective lens). A photoelectric conversion element 3 is arranged behind the main objective lens and the multiple secondary objective lenses. The photoelectric conversion element 3 is used to receive the optical signals acquired by the main objective lens and the multiple secondary objective lenses, and convert the optical signals into a first image 100 and a second image 200. The axis of the secondary objective lens is inclined towards the axis of the main objective lens from the direction away from the secondary objective lens to the direction closer to the secondary objective lens, so that there is an overlapping area between the edge of the second image 200 and the edge of the first image 100.

[0126] In this embodiment, the photoelectric conversion element 3 may be, but is not limited to, a camera module.

[0127] In this embodiment, as Figure 12 , Figures 15 to 17As shown, there is one main objective lens and four secondary objective lenses; however, the number of secondary objective lenses can also be greater than four. The four secondary objective lenses can acquire four second images 200, which are distributed in any direction around the outer periphery of the first image 100. Preferably, the four second images 200 are distributed directly above, below, to the left, and to the right of the first image 100. The four secondary objective lenses are at 90° angles to the main objective lens in the circumferential direction. The four secondary objective lenses are symmetrically distributed. The main objective lens serves as the primary field of view, providing wide-angle imaging (120° field of view) of the main field of view area directly in front. The four secondary objective lenses supplement the field of view of the main objective lens, acquiring images within a 180° to 240° field of view in front of the wide-angle camera. The acquired first image 100 and second image 200 can be integrated into the display screen 4000 used by the surgeon using image software for display, providing the surgeon with a wider field of view.

[0128] Furthermore, such as Figure 15 As shown, the axis of the secondary objective lens is tilted at an angle of 30° to 45° from the direction closest to the secondary objective lens to the direction furthest from the secondary objective lens towards the axis of the main objective lens. This arrangement allows the second image 200 acquired by each secondary objective lens to form an overlapping area with the first image 100 acquired by the main objective lens (the width of the overlapping area can be 5mm), ensuring seamless stitching of the first image 100 and the second image 200. The field of view coverage of the three secondary cameras is shown in Table 3 below:

[0129] Field of view coverage direction Field of view Secondary objective lens supplementary function First objective lens Directly to the left 80° Used to cover blind spots in surgical instrument operation. Second objective lens Directly to the right 80° Used to cover blind spots in surgical instrument operation. Third objective lens Directly above 80° Used for observing blood vessels at the top of the patient's cavity Fourth objective lens Directly below 80° Used for observing blood vessels at the bottom of the patient's cavity

[0130] Table 3

[0131] The main objective lens, in conjunction with four secondary objective lenses, can acquire images within a field of view of 180° to 240°. The main objective lens has a 120° field of view, and each of the three secondary objective lenses has an 80° field of view. Light is transmitted through the main objective lens and the four secondary objective lenses to the photoelectric conversion element 3. The photoelectric conversion element 3 converts the optical signal into a first image 100 and a second image 200. Then, using existing image fusion methods, the overlapping area between the first image 100 and the second image 200 can be fused, resulting in a total field of view coverage angle of 240°.

[0132] In an optional embodiment of the present invention, such as Figure 1 , Figures 12 to 15As shown, the wide-angle camera also includes a tube body 4. A first mounting base 5 is fixedly disposed at the front end of the tube body 4 and inside it. The main objective lens is disposed on the first mounting base 5, with the image acquisition end of the main objective lens facing the front of the tube body 4. The first mounting base 5 is used to fix the main objective lens, ensuring that the optical axis of the main objective lens is strictly aligned with the axis of the tube body 4, and that they are on the same straight line. The main objective lens and the first mounting base 5 can be fixed together by a slot and a boss.

[0133] Furthermore, such as Figure 1 and Figure 15 As shown, a second mounting base 6 is fixedly installed inside the tube body 4 and behind the first mounting base 5. Multiple arc-shaped recesses 401 are formed circumferentially on the outer wall of the tube body 4 in front of the second mounting base 6. An opening 402 is located on the tube body 4 behind the recesses 401. Each recess 401 corresponds to one opening 402, and the recesses 401 communicate with the front of the tube body 4 and the corresponding opening 402. Multiple secondary objective lenses are respectively mounted on the second mounting base 6, and the image acquisition ends of each secondary objective lens extend to the corresponding opening 402, allowing the secondary objective lenses to acquire the second image 200 through the opening 402. The second mounting base 6 supports four secondary objective lenses, achieving a 120° annular symmetrical arrangement around the outer periphery of the main objective lens. The four secondary objective lenses cover the blind zone outside the field of view of the main objective lens, fitting the compact space of the tube body 4. In the actual molding process, a laser cut can be made along the circumference of the outer wall of the tube body 4 to form a notch. The outer wall part of the tube body 4 in front of the notch is bent towards the inside of the tube body 4 to form an arc-shaped concave part 401. The part behind the notch is connected to the concave part 401, and the opening 402 is formed at the notch position. It is necessary to ensure that the size of the opening 402 is compatible with the outer diameter of the secondary objective lens (tolerance is ±0.05mm) to avoid friction damage to the secondary objective lens. Moreover, through the accurate positioning of the secondary objective lens, it is ensured that the display image formed by the first image 100 and multiple second images 200 is seamlessly spliced.

[0134] In an optional embodiment of the present invention, such as Figures 13 to 15 As shown, the first mounting base 5 has a first slot 501 in the middle, and the main objective lens is engaged in the first slot 501. The first slot 501 can be, but is not limited to, a tapered slot. Engaging the main objective lens in the first slot 501 can lock the installation position, ensuring that the optical axis of the main objective lens is strictly aligned with the axis of the tube body 4, and ensuring the stability of the main objective lens installation, preventing positional displacement due to vibration or other reasons during surgery.

[0135] Furthermore, such as Figure 13 and Figure 14As shown, multiple positioning protrusions 502 are provided at intervals along the circumference on the outer wall of the first mounting base 5, and multiple corresponding positioning grooves are provided at corresponding positions on the inner wall of the tube body 4. The first mounting base 5 is engaged with the positioning grooves on the inner wall of the tube body 4 through the positioning protrusions 502, which facilitates the disassembly and assembly of the first mounting base 5 and ensures the stability of the main objective lens installation.

[0136] Furthermore, such as Figure 13 As shown, multiple adhesive grooves 503 are provided at intervals along the circumference on the outer wall of the first mounting base 5. Adhesive is injected into the adhesive grooves 503 to bond and fix the first mounting base 5 to the inner wall of the tube body 4, thereby further ensuring the stability of the main objective lens installation.

[0137] In an optional embodiment of the present invention, a plurality of second slots are provided circumferentially on the outer wall of the second mounting base 6, and a plurality of secondary objectives are respectively engaged in the corresponding second slots. The second slots are obliquely extending grooves to ensure oblique mounting of the secondary objectives.

[0138] In an optional embodiment of the present invention, such as Figure 14 As shown, a plurality of positioning holes 504 are provided on the first mounting base 5 facing the second mounting base 6. The plurality of positioning holes 504 correspond one-to-one with a plurality of secondary objective lenses. Corresponding positioning blocks can be set on the second mounting base 6 or the plurality of secondary objective lenses. By snapping each positioning block into the corresponding positioning hole 504, the position of the second mounting base 6 can be positioned to ensure the accurate positional relationship between the plurality of secondary objective lenses and the main objective lens.

[0139] In an optional embodiment of the present invention, such as Figure 1 , Figure 3 and Figure 15 As shown, the wide-angle camera also includes a cover 7, on which a light-transmitting cover 701 is provided. The cover 7 is located at the front end of the tube body 4, so that the light-transmitting cover 701 covers the main objective lens, achieving the effect of preventing contaminants (such as body fluids, tissue debris, etc.) from contaminating the camera during use and preventing dust. In addition, since the cover 7 and the tube body 4 are connected in a sealed manner, it is easier to sterilize the wide-angle camera by high temperature and high pressure sterilization, plasma sterilization, etc. The light-transmitting cover 701 may be made of glass, but is not limited to glass. Further, in an optional embodiment of the present invention, the light-transmitting cover 701 may be made of sapphire material, so that the light-transmitting cover 701 has both high light transmittance (greater than 95%) and scratch resistance. The thickness of the light-transmitting cover 701 may be, but is not limited to, 0.6mm. After installation, its surface is polished to ensure a smooth surface.

[0140] Furthermore, the inner surface of the light-transmitting cover 701 can be plated with black chrome to achieve the effect of blocking stray light pollution.

[0141] Specifically, such as Figure 1 , Figure 3 and Figure 15 As shown, the end cap 7 has a cylindrical end cap body 702 with openings at both ends. One end of the end cap body 702 can be fixed to the front end of the tube body 4 by laser welding to ensure the airtightness and torsional resistance of the connection between the end cap 7 and the tube body 4. The inner wall of the other end of the end cap body 702 has a stepped first annular groove 7021 and a second annular groove 7022. The first annular groove 7021 is arranged around the outer periphery of the second annular groove 7022. When installing the light-transmitting cover 701, the light-transmitting cover 701 is first embedded in the second annular groove 7022, and then metal solder is added to the first annular groove 7021 to weld and fix the light-transmitting cover 701 to the inner wall of the tube body 4.

[0142] Furthermore, both the first mounting base 5 and the second mounting base 6 can be machined from engineering plastics. When the end cap 7 is installed, the end cap 7 and the first mounting base 5 can be fixed together by a snap-fit ​​structure. The cooperation between the end cap 7 and the first mounting base 5 can also play a role in positioning the main camera, ensuring that the optical axis of the main camera is strictly aligned with the axis of the tube body 4.

[0143] In addition, such as Figure 15 As shown, the front end of the main objective lens is hemispherical, thus forming a rounded corner at the end of the main objective lens, which makes it easy to smoothly insert the main objective lens into the middle space of the end cap 7 when installing it, and facilitates disassembly and assembly.

[0144] In an optional embodiment of the present invention, such as Figure 20 As shown, an illumination source 8 is provided on the tube 4 located behind the primary and secondary objectives. During use, the image acquisition areas of the primary and secondary objectives can be illuminated by the illumination source 8. Multiple illumination sources 8 are arranged in a ring around the circumference of the tube 4, thereby providing uniform, shadowless illumination for the surgeon.

[0145] Furthermore, such as Figure 20 As shown, the lighting source 8 can be divided into multiple light strips 801 along the length of the tube 4, and multiple lamp beads 802 are spaced apart on each light strip 801 to meet the lighting requirements during the operation.

[0146] Specifically, the lighting source 8 can be equipped with four light strips 801 along the length of the tube body 4, and each light strip 801 is equipped with three LED beads 802. The brightness of the LED beads 802 can be dynamically adjusted according to the exposure parameters of the main camera and the secondary camera through existing PWM dimming technology to eliminate reflection and overexposure.

[0147] In an optional embodiment of the present invention, a heat-conducting layer (not shown) is provided on the inner wall of the tube 4, which can conduct the heat generated by the photoelectric conversion element 3 inside the tube 4 to the surface of the tube 4, thereby improving the heat dissipation efficiency. The heat-conducting layer may be, but is not limited to, a heat-conducting copper sheet.

[0148] During use, the wide-angle camera of the present invention, such as Figure 21 As shown, the image can be controlled via the operating handle 2000. The buttons 2001 on the operating handle 2000 can be used to switch between displaying images acquired by the main objective lens and different secondary objectives, providing a clear field of view from different positions. Similarly, only the image provided by one objective lens (main objective lens or secondary objective lens) can be displayed, thus allowing for a clearer image to be displayed on the limited display screen 4000. For example: Figure 16 and Figure 17 As shown, Mode 1 is a panoramic mode that merges the first image 100 and the second image 200 for display, suitable for surgical path planning scenarios; Mode 2 is a main-scope single-display mode, where the camera module only displays the first image 100 acquired by the main objective lens, and displays the image of the core area through 4K high-definition focusing; Mode 3 is a secondary-scope switching mode, which can cycle through the second images 200 acquired by different secondary objectives, used to explore hidden structures on the sides of the core area. Figure 12 and Figure 16 As shown, this illustrates the positional relationship between the main objective lens and multiple secondary objective lenses and the camera module, as well as the first image display area 4001 and the second image display area 4002 displayed on the display screen 4000.

[0149] Specifically, the operating handle 2000 can integrate a three-way joystick button (up / down / confirm button), and the surface of the operating handle 2000 is covered with medical-grade silicone to support aseptic operation;

[0150] The corresponding relationships for mode switching are shown in Table 4 below:

[0151]

[0152] Table 4

[0153] The specific steps for implementing the panoramic display mode are as follows:

[0154] Data synchronization: Image data acquired by the main objective and the four secondary objectives are output synchronously;

[0155] Real-time stitching: The FPGA chip performs pixel-level alignment of five video streams and merges them into a single 4K panoramic image;

[0156] Dynamic optimization: Adaptive HDR algorithm is used to balance the exposure of each area and eliminate the brightness difference at the stitching seam between different images.

[0157] Display effect: as shown Figure 12 As shown, the center of the screen 4000 is the display area of ​​the main objective lens's 120° wide-angle core area (i.e., the first image display area 4001); the outer ring area is provided by four secondary objective lenses with an 80° field of view (i.e., the second image display area 4002), and they are seamlessly spliced ​​together, with a total coverage angle of 240°.

[0158] For the main lens single-display mode, hardware-level switching is performed, and the main control board camera module only receives the optical signals transmitted by the main objective lens or only converts the optical signals transmitted by the main objective lens into image information; the processing of the optical signals transmitted by the main objective lens occupies processor resources exclusively, and 4K resolution and 60fps frame rate are enabled for image output.

[0159] The secondary objective lens switching mode allows for sequential switching between the second images 200 acquired by the three secondary objective lenses by briefly pressing the up or down button.

[0160] In an optional embodiment of the present invention, such as Figure 18 As shown, the secondary objective lens of the second image acquisition element 2 can be replaced with a beam splitter, that is, the first image acquisition element 1 is the main objective lens, and multiple second image acquisition elements 2 are beam splitters, located behind the main objective lens along its axial direction. The wide-angle camera also includes a photoelectric conversion element 3, located behind the main objective lens and multiple beam splitters. The main objective lens and multiple beam splitters project light of different wavelengths onto the photoelectric conversion element 3, which receives the optical signals transmitted by the main objective lens and multiple beam splitters and converts the optical signals into a first image 100 and a second image 200. In actual image display, the camera module can identify the optical signals transmitted by the corresponding beam splitter through light of different wavelengths, thereby identifying different second images 200 and integrating or displaying the first image 100 and the second image 200 separately on the display screen 4000. For example, as... Figure 19 As shown, by analyzing the pixel spectrum of the original image (i.e., the second image 200 to be displayed in different directions), the second image 200 in different directions is transmitted and displayed using light of different wavelengths (e.g., an image in the left front view can be transmitted using light of the 450nm wavelength, an image in the front view can be transmitted using light of the 520nm wavelength, an image in the right front view can be transmitted using light of the 590nm wavelength, and an image in the rear view can be transmitted using light of the 630nm wavelength).

[0161] In this embodiment, the specific structure and shape of the beam splitter are not limited. In actual use, the corresponding beam splitter can be selected according to the specific area to be collected, as long as it can successfully transmit the optical signal to the camera module.

[0162] The features and advantages of the wide-angle camera of the present invention are:

[0163] The wide-angle camera has multiple second image acquisition elements 2 arranged at intervals along the circumference of the first image acquisition element 1. The first image acquisition element 1 acts as the main element to acquire the first image near the center, while the multiple second image acquisition elements 2 act as auxiliary elements to acquire multiple second images located around the first image. The multiple second images have at least a partial overlap with the first image, so that the first image and the multiple second images can be stitched together to form a whole display image, thereby expanding the image acquisition area and realizing the wide-angle function.

[0164] The wide-angle camera of the present invention not only provides a larger image acquisition angle, but also allows the first image acquisition element 1 and / or different second image acquisition elements 2 to acquire images according to actual needs. Therefore, it is easy to switch between images acquired from different directions. When the wide-angle camera is applied to endoscopy, it can provide the surgeon with a wider and clearer viewing angle.

[0165] Implementation Method 3

[0166] like Figures 1 to 23 As shown, the present invention also provides an endoscope, which includes the aforementioned wide-angle camera 1000, operating handle 2000 and endoscope tube 3000, wherein the wide-angle camera 1000 is connected to the operating handle 2000 through the endoscope tube 3000.

[0167] In the aforementioned wide-angle camera 1000, the tube body 4 can be part of the lens tube 3000. Alternatively, it can be a separate tube segment, which is connected to the lens tube 3000 during assembly.

[0168] In this embodiment, the endoscope tube 3000 has a certain bending capacity, which can meet the requirement of bending at least 20° to 30° during use, so that the surgeon can hold it for easy use.

[0169] In an optional embodiment of the present invention, such as Figure 21 As shown, the operating handle 2000 has multiple buttons 2001. These buttons 2001 can be used to control the display of the first image 100, or to control the display of the second image 200, or to control the switching between different second images 200, or to control the storage of the first image 100 and / or the second image 200. Specifically, a short press of the confirmation button switches between different display modes (e.g., displaying the first image 100 and the second image 200 simultaneously, displaying only the first image 100, or displaying only the second image 200); a long press of the confirmation button saves the currently displayed image; pressing the up or down arrow keys switches between different displayed second images 200 while the second image 200 is displayed.

[0170] The endoscope in this invention may be, but is not limited to, a curved neuroendoscopy.

[0171] The endoscope of the present invention, through the cooperation and collaborative imaging between multiple image acquisition elements, can achieve wide-angle display capability, has the advantage of no blind spot coverage, and can significantly improve the width of the field of view, imaging stability and equipment reliability during surgery.

[0172] Furthermore, the endoscope of the present invention has the features and advantages of the wide-angle camera described above, which will not be repeated here.

[0173] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0174] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0175] The above are merely a few embodiments of the present invention. Although the embodiments disclosed in the present invention are as described above, the content is only for the purpose of facilitating understanding of the present invention and is not intended to limit the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A wide-angle camera, characterized in that, The wide-angle camera includes: tube body; A first image acquisition element, wherein the first image acquisition element is used to acquire a first image; Multiple second image acquisition elements are distributed at intervals around the outer periphery of the first image acquisition element along the circumferential direction of the first image acquisition element, and the image acquisition direction of the multiple second image acquisition elements forms a preset angle with the image acquisition direction of the first image acquisition element. The multiple second image acquisition elements are used to acquire corresponding second images. The multiple second images are located in any direction on the outer periphery of the first image, and there is at least a partial overlap between the multiple second images and the first image, so that the first image and the multiple second images are stitched together to form a display image; In the axial direction of the first image acquisition element, the image acquisition ends of a plurality of second image acquisition elements are respectively located behind the image acquisition end of the first image acquisition element, and the axes of the plurality of second image acquisition elements are inclined from the direction away from their respective second image acquisition elements to the direction of the axis of the first image acquisition element, so that there is an overlapping area between the edge of the second image and the edge of the first image; A first mounting base is disposed at the front end and inside the tube body, and a second mounting base is disposed inside the tube body and behind the first mounting base. Multiple recesses are formed circumferentially on the outer wall of the tube body in front of the second mounting base, and an opening is located on the tube body behind the recesses. Each of the multiple recesses corresponds to one of the multiple openings, and the recesses communicate with the front of the tube body and the corresponding opening. A first image acquisition element is disposed on the first mounting base, with its image acquisition end facing the front of the tube body. Multiple second image acquisition elements are respectively disposed on the second mounting base, with their image acquisition ends extending to the corresponding openings.

2. The wide-angle camera as described in claim 1, characterized in that, The number of the second image acquisition elements is greater than or equal to three, and the multiple second image acquisition elements are spaced apart and evenly distributed on the outer periphery of the first image acquisition element; The plurality of second image acquisition elements can acquire at least three second images, and the three second images are respectively distributed in any direction on the outer periphery of the first image.

3. The wide-angle camera as described in claim 2, characterized in that, The first image acquisition element is the main camera, and the multiple second image acquisition elements are each a secondary camera.

4. The wide-angle camera as described in claim 1, characterized in that, The number of the second image acquisition elements is greater than or equal to four, and the multiple second image acquisition elements are spaced apart and evenly distributed on the outer periphery of the first image acquisition element; The plurality of second image acquisition elements can acquire at least four second images, which are distributed in any direction on the outer periphery of the first image.

5. The wide-angle camera as described in claim 4, characterized in that, The first image acquisition element is the main objective lens, and the plurality of second image acquisition elements are each a secondary objective lens; The wide-angle camera also includes a photoelectric conversion element located behind the main objective lens and the plurality of secondary objective lenses. The photoelectric conversion element is used to receive optical signals collected by the main objective lens and the plurality of secondary objective lenses, and convert the optical signals into the first image and the second image.

6. The wide-angle camera as described in claim 4, characterized in that, The first image acquisition element is the main objective lens, and the plurality of second image acquisition elements are beam splitters. Along the axial direction of the main objective lens, a plurality of beam splitters are respectively located behind the main objective lens; The wide-angle camera also includes a photoelectric conversion element located behind the main objective lens and the plurality of beam splitters. The main objective lens and the plurality of beam splitters are used to project light of different wavelengths onto the photoelectric conversion element. The photoelectric conversion element is used to receive the optical signals transmitted by the main objective lens and the plurality of beam splitters and convert the optical signals into the first image and the second image.

7. The wide-angle camera as described in claim 1, characterized in that, The first mounting base has a first slot, and the first image acquisition element is snapped into the first slot; And / or, the second mounting base has a plurality of second slots, and a plurality of the second image acquisition elements are respectively snapped into the corresponding second slots.

8. The wide-angle camera as described in claim 1, characterized in that, The outer wall of the first mounting base has a positioning protrusion, and the first mounting base is engaged with the positioning groove on the inner wall of the tube through the positioning protrusion; And / or, the outer wall of the first mounting base has an adhesive groove, and the first mounting base is bonded and fixed to the inner wall of the tube by injecting adhesive into the adhesive groove.

9. The wide-angle camera as described in claim 1, characterized in that, The wide-angle camera also includes a cover, which is provided with a light-transmitting cover. The cover is located at the front end of the tube body so as to cover the first image acquisition element through the light-transmitting cover.

10. The wide-angle camera as described in claim 9, characterized in that, The end cap has a cylindrical end cap body with openings at both ends. One end of the end cap body is connected to the front end of the tube body. The inner wall of the other end of the end cap body has a stepped first annular groove and a second annular groove. The first annular groove is arranged around the outer periphery of the second annular groove. The light-transmitting cover is embedded in the second annular groove, and solder is added in the first annular groove to weld and fix the light-transmitting cover to the inner wall of the tube body.

11. The wide-angle camera as described in claim 10, characterized in that, An illumination source is provided on the tube body located behind the first image acquisition element and the second image acquisition element, and the illumination source illuminates the image acquisition areas of the first image acquisition element and the second image acquisition element.

12. An endoscope, characterized in that, The endoscope includes: The wide-angle camera according to any one of claims 1 to 11; Operating handle; The wide-angle camera is connected to the operating handle via the lens tube.

13. The endoscope as described in claim 12, characterized in that, The operating handle has multiple buttons, which can be used to control the display of the first image, or to control the display of the second image, or to control the switching between different second images, or to control the storage of the first image and / or the second image.

Images