Oral imaging device

Abstract

The application discloses an oral imaging device, which comprises a host, a support and a camera module. The host is held by a hand, and the host is provided with a controller. The support has a connecting end and an entrance end distributed in the length extension direction of the support. The connecting end is connected with the host, and the entrance end is used for at least extending into the oral cavity of a photographed person. The camera module is arranged on the entrance end. The camera module comprises a camera and a plurality of light sources arranged around the camera and spaced apart. The controller is used for controlling the camera and the light sources. The field of view angle of the camera is greater than or equal to 140 DEG. When the support is located between two dental arches, the camera is used for at least photographing the image of the occlusal surface of one dental arch. The oral imaging device provided by the application can make the photographing area of the camera cover the whole dental arch, so that the panoramic image of the dental arch can be obtained in one-time photographing in the mouth.

Description

[0001] Related cross-references

[0002] This application claims priority to PCT International Application No. "PCT / CN2025 / 075539", filed on January 27, 2025, entitled "Oral Camera", and also claims priority to PCT International Application No. "PCT / CN2025 / 075430", filed on January 27, 2025, entitled "ORAL IMAGING DEVICE AND SYSTEMTHEREOF", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of oral imaging technology, and more particularly to an oral imaging device. Background Technology

[0004] In related technologies, oral imaging equipment typically includes in-mouth imaging devices and mouth-opening imaging devices. In-mouth imaging devices are used to photograph the tooth surfaces inside the mouth, and usually can only photograph one or a few teeth at a time, rather than capturing the entire dental arch in a single image.

[0005] To capture the entire dental arch in a single image, dentists may need to select a professional SLR camera and mirror, a process involving complex equipment and procedures. Therefore, there is a pressing need for a simpler, more user-friendly imaging device capable of capturing the entire dental arch. Summary of the Invention

[0006] This application discloses an oral imaging device that enables the camera to cover the entire dental arch, thereby acquiring a panoramic image of the dental arch in a single intraoral imaging session.

[0007] To achieve the above objectives, this application discloses an oral imaging device, the oral imaging device comprising:

[0008] A host computer, which is designed to be held in the hand, and is equipped with a controller;

[0009] A support member having a connecting end and an inlet end distributed along its own length extension direction, the connecting end being connected to the main unit, and the inlet end being at least for insertion into the oral cavity of the subject being photographed; and...

[0010] A camera module is installed at the entrance end. The camera module includes a camera and multiple light sources arranged around the camera at intervals. The controller is used to control the camera and the light sources. The field of view of the camera is greater than or equal to 140°. When the support is located between two dental arches, the camera is used to capture an image of the occlusal surface of at least one dental arch.

[0011] The oral imaging device provided in this application sets the field of view of the camera to be greater than or equal to 140°, so that when the user opens their mouth to a moderate size, it can capture a larger range of the dental arch. For example, the camera's shooting area can cover the entire dental arch, thus making it possible to obtain a panoramic image of the dental arch in a single shot inside the mouth. Since the camera can be inserted into the user's oral cavity, it can acquire tooth surface images with corrected viewing angles without the need for instruments such as mirrors. The operation is simple. In addition, it does not require multiple people or others to cooperate in shooting, and the user can operate and examine the oral cavity by themselves. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the first type of oral imaging device disclosed in the embodiments of this application;

[0014] Figure 2 yes Figure 1 A magnified view of point M in the image;

[0015] Figure 3 This is a schematic diagram of the structure of the camera and light source disclosed in the embodiments of this application;

[0016] Figure 4 This is a schematic diagram of the shooting range of the camera and the illumination range of the light source disclosed in the embodiments of this application;

[0017] Figure 5 This is a schematic diagram of the field of view of the camera disclosed in the embodiments of this application;

[0018] Figure 6 This is a diagram of a dental arch;

[0019] Figure 7 This is a schematic diagram of the oral imaging device disclosed in this application when it is placed in the upper dental arch;

[0020] Figure 8 This is a schematic diagram of the oral imaging device disclosed in this application when it is placed in the lower dental arch;

[0021] Figure 9 This is a schematic diagram of the oral imaging device disclosed in this application when it is placed between the upper and lower dental arches;

[0022] Figure 10 This is a schematic diagram of the oral imaging device disclosed in this application when it is placed on the outer surface of the upper and lower dental arches;

[0023] Figure 11 This is a schematic diagram of the oral imaging device disclosed in this application when it is placed in the jawbone;

[0024] Figure 12A yes Figure 1 A schematic diagram of the structure of an oral imaging device from another perspective;

[0025] Figure 12B This is a schematic diagram of a second structure of the oral imaging device disclosed in the embodiments of this application;

[0026] Figure 12C This is a schematic diagram of the third structure of the oral imaging device disclosed in the embodiments of this application;

[0027] Figure 12D This is a schematic diagram of the fourth structure of the oral imaging device disclosed in the embodiments of this application;

[0028] Figure 13 These are schematic diagrams of commonly used oral imaging types in clinical practice;

[0029] Figure 14 This is a schematic diagram of the shooting range of the oral imaging device when the user's mouth opening angle is β and the camera's tilt angle is α.

[0030] Figure 15 This is a schematic diagram of the fifth structure of the oral imaging device disclosed in the embodiments of this application;

[0031] Figure 16 This is a sixth structural schematic diagram of the oral imaging device disclosed in the embodiments of this application.

[0032] Explanation of main figure symbols

[0033] 100-Dental imaging device; 11-Main unit; 12-Support component; 12a-Connecting end; 12b-Entrance end; 121-First abutment part; 122-Second abutment part; 123-Third abutment part; 13-Camera module; 131-Camera; 132-Light source; 133-Light shield; 14-Mouth opener; 141-Opening part; 1411-Through-viewing hole; 142-Connecting part;

[0034] 200 - Dental arch; 21 - First dental arch; 22 - Second dental arch. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the exemplary embodiments of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments. That is, the specific embodiments described herein are merely used to explain this application and are not intended to limit this application.

[0036] It should be noted that the brief descriptions of terminology used in this application are merely for the purpose of facilitating understanding of the embodiments described below, and are not intended to limit the embodiments of this application. 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 in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0037] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] The terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first abutment may be referred to as a second abutment, and similarly, a second abutment may be referred to as a first abutment. Both the first abutment and the second abutment are abutments, but they are not the same abutment.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In the description of this application, it should be noted that the singular forms of "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that terms such as "comprising / including" or "having" specify the presence of the stated features, integrals, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integrals, steps, operations, components, parts, or combinations thereof.

[0042] In addition, the term "and / or" as used in this specification includes any and all combinations of the related listed items. For example, A and / or B can mean: A alone, A and B together, or B alone. That is, the term "and / or" as used in this specification includes any and all combinations of the related listed items.

[0043] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] Please see Figure 1 , Figure 1 A schematic diagram of the structure of an exemplary oral imaging device in some embodiments of this application is shown.

[0045] like Figure 1 As shown in the embodiments of this application, the oral imaging device is mainly used to take pictures of the user's oral cavity to obtain oral images, wherein the oral images may include images of oral tissues such as teeth, gums, oral mucosa, and tongue.

[0046] The oral imaging device 100 provided in this application embodiment includes a host 11, which is mainly used for hand-holding. For example, a user can hold the host 11 and allow the oral imaging device 100 to take pictures of the patient's mouth or teeth.

[0047] In some embodiments, the host 11 has a controller (not shown) inside; that is, the host 11 may serve as a housing for the controller. In other embodiments, the host 11 may serve as a housing for a battery, memory, communication element, or other electronic component, in addition to serving as a housing for the controller, for controlling the operation of the device.

[0048] In some implementations, the main unit 11 may adopt an ergonomic, rounded handle design, which makes it easier for users or dentists to hold and adjust the angle and position of the oral imaging device 100 during imaging.

[0049] It is understood that in other embodiments, the shape of the host 11 is not limited to a circle, but may also adopt a geometric shape that is easy to hold, such as a square, rectangle, or hexagon.

[0050] In some embodiments, the host 11 may be a columnar structure extending along the length direction, such as a cylindrical structure, to facilitate gripping. In other embodiments, the host 11 may be a block-shaped structure extending along the length direction, such as a square block structure, specifically a rectangular block structure or a square block structure.

[0051] In some embodiments, such as Figure 1 and Figure 2 As shown, the oral imaging device 100 provided in this embodiment includes a support member 12. The support member 12 has a connecting end 12a and an inlet end 12b distributed along its own length extension direction. The connecting end 12a is connected to the host 11, and the support member 12 extends along the length extension direction of the host 11. Therefore, the length extension direction of the support member 12 is also the length extension direction of the host 11. For example... Figure 1 The x-direction of the support 12. The inlet end 12b of the support 12 can be used to extend into the mouth of the subject being photographed.

[0052] In some embodiments, the support member 12 may be detachably mounted to the main unit 11 for easy replacement, cleaning, or storage. In other embodiments, the support member 12 may be an integral part of the main unit 11.

[0053] In some embodiments, such as Figure 2 and Figure 3 As shown, the oral imaging device 100 provided in this application embodiment includes a camera module 13 disposed at the entrance end 12b. The camera module 131 includes a camera 131 and a plurality of light sources 132 arranged around the camera 131 and spaced apart. The controller is used to control the camera 131 and the light sources 132, thereby utilizing the light sources 132 to provide sufficient light dose to enhance the visualization effect of pathological conditions, thereby obtaining a clear image of the target oral cavity area.

[0054] In some embodiments, the light source 132 may generate white light, blue light, violet light, ultraviolet light, or infrared light, and the wavelength range of the light source 132 is selected from at least one of: 315-400nm (violet light), 380-750nm (visible light, white light), 450-500nm (blue light), or 750-1500nm (infrared light).

[0055] The arrangement of these light sources 132 not only provides sufficient illumination for the camera 131, but also emits light of specific wavelengths to assist in detection; for example, violet light can excite the fluorescence effect of dental plaque.

[0056] In some embodiments, the camera module 13 further includes a light shield 133, which surrounds the camera 131, and multiple light sources 132 are distributed around the periphery of the light shield 133. This allows the light shield 133 to constrain the light path of the light sources 132, preventing the light sources 132 from forming light spots or ghosting within the camera 131, thereby improving the imaging quality of the camera 131.

[0057] For ease of description, this application, as Figure 4 As shown, among the two light sources 132 that are furthest apart, one is defined as the first light source 132a and the other as the second light source 132b. The intersection of the light emission range contour line of the first light source 132a and the light emission range contour line of the second light source 132b is defined as the first intersection point A. The intersection of the light emission range contour line of either the first light source 132a or the second light source 132b and the shooting range contour line of the camera 131 is defined as the second intersection point B.

[0058] The distance from the first intersection point A to the surface where the light source 132 is located is configured as L1, that is, the distance between the intersection points of the optical paths of the camera 131 and the multiple light sources 132 is L1. The distance between the first intersection point A and the second intersection point B is configured as L2, that is, the distance between the optical path of the camera 131 and the multiple light sources 132 and the position where the field of view of the camera 131 is offset from the camera 131 is L2. L1 and L2 satisfy: L1≤10mm, L1+L2≥30mm, for example, L1=5mm, 5.6mm, 6mm, 6.45mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc., L1+L2=50mm, 48.8mm, 48mm, 47mm, 45mm, 44mm, 42.4mm, 40mm, 37.5mm, 35mm, 33mm, 30mm, etc.

[0059] If the light source 132 does not intersect within a distance L1, the image captured within this viewing distance may have a dark area in the middle; if the light source 132 is beyond a distance L1+L2 and cannot cover the field of view of the camera 131, dark areas will exist at the edges when capturing the image. Therefore, by ensuring that the positional relationship between the camera 131 and the multiple light sources 132 satisfies the above relationship, it is possible to guarantee that the light covers the field of view of the camera 131, enhance the illumination effect of the light source 132 on the camera 131, and minimize shadows, light spots, or edges.

[0060] In some embodiments, in the direction from the image side of camera 131 to the object side of camera 131, the light source 132 is lower than the light-incident surface of camera 131. That is, in the direction from the image side of camera 131 to the object side of camera 131, the light source 132 is passed first, and then to the light-incident surface of camera 131. In the direction from the object side of camera 131 to the image side of camera 131, the light source 132 is lower than the light-exiting surface of camera 131. That is, in the direction from the image side of camera 131 to the object side of camera 131, the light source 132 is passed first, and then to the light-exiting surface of camera 131.

[0061] In other words, the light source 132 neither protrudes from the light-incident surface nor the light-exit surface of the camera 131 along the optical axis. This arrangement avoids the light source 132 from obstructing the viewing angle of the camera 131, and also ensures that the illumination range of the light source 132 covers the shooting range of the camera 131, thus preventing dark spots or dark edges from forming in the middle or at the edges of the image.

[0062] In some embodiments, the camera 131 includes a wide-angle camera 131 with a field of view (FOV) greater than or equal to 140°, such as 140°, 145°, 150°, 153°, 155°, 157°, 160°, 163°, 164°, 170°, 172.5°, 177.8°, 180°, etc., so that when the support 12 is located between two dental arches, the camera 131 can be used to capture an image of the occlusal surface of at least one dental arch 200.

[0063] If the field of view of camera 131 is less than 140°, the imaging range of camera 131 will be limited when shooting the area to be scanned inside the oral cavity. It will be unable to capture enough tooth images at once, which may require multiple adjustments to the shooting angle or position to obtain a complete oral cavity image, increasing the shooting time and complexity and reducing shooting efficiency.

[0064] The camera 131 has a field of view greater than or equal to 140°, which provides a wider shooting range and combines comprehensiveness and efficiency. When the support 12 is inserted into the user's mouth, the camera 131 can cover more tooth images in a single shot, including the occlusal surface, inner surface and outer surface of the teeth. It can also capture images of multiple teeth at the same time and capture a complete dental arch image in a single shot, thereby reducing the number of shots and improving shooting efficiency.

[0065] In other words, when the field of view of camera 131 is set to a range greater than or equal to 140°, it is possible to capture a larger range or wider angle of the dental arch when the camera 131 is in the inlet and the user's mouth is open to a moderate degree. For example, the shooting area of ​​camera 131 can cover the entire dental arch, thereby obtaining a more complete or wider image of the dental arch. It is even possible to obtain a panoramic image of the dental arch in a single shot inside the mouth without the need for an auxiliary reflector. The operation process is relatively simple and easy to operate, and users can operate it themselves to examine their oral cavity.

[0066] When the distance between the camera 131 and the subject (such as the upper dental arch) is set to 20mm, the shorter side of the captured image will be ≥60mm (diagonal ≥100mm), requiring a field of view (FOV) of approximately 140° or greater. Therefore, in some embodiments, the field of view of the camera 131 is greater than or equal to 170°, thereby enabling the camera 131 to cover the entire dental arch and capture the entire occlusal surface while further reducing the degree of mouth opening, thus facilitating the capture of panoramic images that better meet the standards of dental imaging.

[0067] In some embodiments, the camera 131 has a rectangular field of view (e.g., Figure 5 (The dashed box in the image) The short side of the rectangular field of view is parallel to the length extension direction of the support member 12.

[0068] In this context, a rectangular field of view refers to an image area captured by camera 131 that is rectangular in shape. The rectangular field of view can be divided into the horizontal field of view (HFoV) and the vertical field of view (VFoV). The horizontal field of view determines the maximum angle visible to the left and right sides of camera 131, while the vertical field of view determines the maximum angle visible to the top and bottom sides.

[0069] The field of view of camera 131 is rectangular, with the maximum range corresponding to its diagonal. The shorter side of the rectangular field of view is parallel to the length extension direction of support member 12 (i.e., the extension direction of support member 12 away from host 11). The vertical field of view of camera 131 extends along the length extension direction of support member 12, allowing camera 131 to better cover the occlusal or inner surface of teeth, thus improving the utilization rate of the field of view. Users can adjust the angle of support member 12 to obtain a better viewing angle.

[0070] like Figure 5 As shown, the shorter side (D1) of the rectangular field of view of camera 131 is parallel to the length extension direction of the support, and the longer side (W1) is parallel to the width direction of the support. The ratio of W1 to D1 can be 4:3 or 16:9, or other ratios. When the support is placed against the dental arch, the angle between the optical axis of camera 131 and the user's occlusal surface is 60°-90° (to obtain a better shooting angle). Figure 6 As shown, the correspondence between the dental arch depth D2 (distance from the edge of the molar to the incisor) and the dental arch width W2 (distance between the edges of the molars on both sides) determines that the short side of the rectangular field of view must be parallel to the direction of oral cavity depth, and the long side must be parallel to the direction of dental arch width (left and right direction), so as to achieve complete imaging of the dental arch.

[0071] Therefore, by making the short side of the rectangular field of view of the camera 131 parallel to the length extension direction of the support member 12, the field of view can be utilized more effectively. At a specific field of view angle, it can be compatible with a smaller shooting distance, or at a specific shooting distance, it can capture a larger area of ​​the dental arch, which is more conducive to capturing a panoramic view of the occlusal surface.

[0072] It should be noted that when shooting, the optical axis of the camera 131 should be as perpendicular as possible to the occlusal surface, or kept between 60° and 90°, to avoid the occlusal surface fissures being obscured by an excessively large shooting angle, thus preventing complete imaging.

[0073] In some embodiments, the cross-section of the main unit 11 is larger than the cross-section of the support member 12 in the direction perpendicular to the length of the support member 12. When using the oral imaging device 100 to photograph the oral cavity, the main unit 11 is typically held in hand, and the inlet end 12b of the support member 12 and the camera 131 are inserted into the oral cavity. The cross-section of the main unit 11 is larger than the cross-section of the support member 12, which can prevent the support member 12 from being too large, making it easier to move in the oral cavity and allowing the support member 12 to move more flexibly in the oral cavity. This also avoids the camera 131 being too large, which would compress the distance between the camera 131 and the tooth surface being photographed, thus limiting the area of ​​the tooth surface that the camera 131 can capture.

[0074] In some embodiments, such as Figure 1As shown, the main unit 11 and the support 12 are rod-shaped as a whole. The rod-shaped main unit 11 is easy to hold; while the rod-shaped support 12 facilitates the movement of the support 12 within the oral cavity to adjust the position of the camera 131 in order to acquire the target image.

[0075] In other embodiments, the host 11 is block-shaped (e.g. Figure 15 As shown, the support member 12 is rod-shaped or bar-shaped. The block-shaped main unit 11 ensures that the surface of the main unit 11 in contact with the user's hand is flat, thus preventing the main unit 11 from rolling when held, allowing the user to hold the main unit 11 stably and improving the stability of the user's hand holding the main unit 11. Furthermore, the main unit 11 is flat at least on the side facing the same and / or opposite to the camera 131. In this way, the flat surface can be used to find the shooting angle, so that the distance from the camera 131 to the tooth surface to be photographed is consistent in the left and right direction, thereby capturing an ideal target image.

[0076] In some embodiments, such as Figure 7 and Figure 8 As shown, the images of the occlusal surfaces of the dental arch captured by camera 131 can include panoramic images of the occlusal surfaces. These panoramic images play a crucial supporting role in improving detection efficiency and meeting the needs of dental arch layout detection. These images are typically obtained using a DSLR camera with an opening device and a reflector, a feature required in many detection scenarios. The oral imaging device 100 in this application enables a single, complete capture of the occlusal surfaces of the upper or lower dental arches, reducing the number of captures, saving time, improving patient comfort, and expanding the range of dental arch layout-related diseases that can be detected by similar oral imaging devices.

[0077] In some embodiments, such as Figure 9 As shown, when the support 12 is located between the two dental arches 200, the camera 131 is also used to capture images of a portion of the inner surface of at least one of the two dental arches 200, thereby enabling the oral imaging device 100 of this application to acquire more comprehensive images of the teeth.

[0078] For ease of description, one of the two dental arches 200 is defined as the first dental arch 21 and the other as the second dental arch 22. One of the first dental arch 21 and the second dental arch 22 is the lower dental arch and the other is the upper dental arch. Both the first dental arch 21 and the second dental arch 22 include teeth, or periodontal tissues such as teeth and gums.

[0079] In some embodiments, such as Figure 7 and Figure 8As shown, the support member 12 is provided with a first abutment part 121. When the support member 12 abuts against the first dental arch 21 through the first abutment part 121, the camera 131 is used to capture an image of the second dental arch 22.

[0080] In this way, the first abutment 121 can be used to abut against the dental arch to limit the position of the camera 131 in the oral cavity and / or stabilize the camera 131, providing a better position and angle for dental arch imaging, so that the camera 131 can obtain a better shooting angle, thereby enabling imaging of a larger range or wider angle of the dental arch, obtaining a more complete or wider image of the dental arch, and ultimately achieving the goal of capturing the entire dental arch in a single image.

[0081] For example, such as Figure 7 As shown, when the support member 12 is placed against the upper dental arch and the optical axis of the camera 131 is oriented towards the lower dental arch, the first abutment part 121 can stabilize the support member 12. It is worth noting that, as Figure 8 As shown, when the oral imaging device 100 is placed against the lower dental arch and the camera 131 is facing the upper dental arch, the first abutment 121 can also stabilize the support member 12. With this structural design, the camera 131 can capture partial or complete images of the dental arch 200 (such as the upper or lower dental arch).

[0082] During dental arch imaging (e.g.) Figure 8 As shown, the user or dentist can have the user open their mouth approximately 20° to 45°, and then insert the camera 131 into the user's mouth. The first abutment 121 allows the camera 131 to be placed against the lower dental arch, thereby positioning the camera 131 below the highest point of the lower dental arch within the user's mouth. This arrangement embeds the camera 131 within the mouth relative to the subject, increasing the distance between the upper dental arch and the camera 131, enabling the camera 131 to acquire a panoramic image of the upper dental arch in a single shot. This design also significantly reduces the angle of mouth opening required by the user during shooting.

[0083] In some embodiments, the surface of the first abutment 121 that contacts the first dental arch 21 is straight, flat, or smooth in the width or thickness direction of the support 12. When the user bites and applies pressure to the first abutment 121, the straight surface can evenly distribute the pressure along the width direction of the support 12, thereby effectively preventing the camera 131 from lateral displacement on the dental arch.

[0084] In addition, the surface of the first abutment 121 that contacts the first dental arch 21 is straight, flat or smooth in the width direction of the support 12, which can also make the distance from the camera 131 to the left and right areas of the dental arch relatively consistent.

[0085] In some embodiments, the first abutment 121 includes at least one of a groove, a protrusion, and a bent structure. It should be noted that when the first abutment 121 includes a groove, the groove may be formed by removing a portion of the material from the support member 12, or it may be formed by inwardly recessing the side of the support member 12 (e.g., Figure 15 (as shown), or, the groove can also be formed by the support 12 bending and arching from the image side of the camera 131 towards the object side of the camera 131 (as shown). Figures 7-8 (As shown).

[0086] When the first abutment 121 includes a groove, the first abutment 121 can increase the distance between the camera 131 and the dental arch being photographed, so that the camera 131 can maintain the threshold distance required for shooting, making it easier to capture panoramic images, or reducing the mouth opening angle required by the user when panoramic images can be captured.

[0087] In some embodiments, the first abutment 121 and the camera 131 are located on opposite sides of the support 12; when the first abutment 121 abuts against the incisor of the first dental arch 21, the camera 131 is used to capture an image of the occlusal surface of the second dental arch 22. For example, the camera 131 can be placed with the first abutment 121 abutting against the incisor of the lower dental arch to capture an image of the occlusal surface of the upper dental arch, or the first abutment 121 can be placed with the first abutment 121 abutting against the incisor of the upper dental arch to capture an image of the occlusal surface of the lower dental arch.

[0088] When the camera 131 abuts against the incisor of the first dental arch 21 via the first abutment part 121 to capture an image of the occlusal surface of the second dental arch 22, it can increase the distance between the second dental arch 22 and the camera 131, enabling the camera 131 to obtain a wider shooting range, thus achieving both comprehensiveness and efficiency in shooting.

[0089] In some embodiments, the support member 12 is flat and elongated, that is, the thickness of the support member 12 is less than the length and width of the support member 12, and the width of the support member 12 is less than the length of the support member 12, so as to facilitate the entry of the support member 12.

[0090] In some embodiments, the first abutment 121 and the camera 131 are located on opposite sides of the support member 12 in its thickness direction, and the bottom surface of the first abutment 121 or at least one side surface of the support member 12 in its thickness direction is a plane. Thus, when the support member 12 abuts against the dental arch on its side surface in its thickness direction, the support member 12 can rest stably against the dental arch, thereby ensuring the shooting angle and shooting quality of the camera 131.

[0091] In some embodiments, the support member 12 is provided with a second abutment portion 122, and the second abutment portion 122 and the camera 131 are located on adjacent sides of the support member 12; when the second abutment portion 122 abuts against the first dental arch 21 and / or the second dental arch 22, the camera 131 is used to capture images of the inner surfaces of the upper teeth and / or the inner surfaces of the lower teeth (e.g., ...). Figure 9 (As shown).

[0092] The second abutment 122 may be at least one of a groove or a protrusion.

[0093] For example, the second abutment 122 can abut against a part of the teeth such as incisors, canines, or molars. After the second abutment 122 abuts against the teeth, the camera 131 can be aimed at both sides of the oral cavity to capture images of the inner surfaces of the teeth on the left and right sides of the oral cavity. Here, "both sides" refers to the sides of the human body, such as the left and right ears located on both sides.

[0094] like Figure 9 As shown, when the support 12 laterally abuts against a single dental arch (e.g., the second dental arch 22) via the second abutment 122 or is positioned between the first dental arch 21 and the second dental arch 22, the camera 131 can face the inner surface of at least a portion of the upper and lower dental arches. During dental arch scanning (e.g.) Figure 9 As shown), the user or dentist inserts the camera 131 into the patient's mouth and has the patient bite down on the support 12 via the second abutment 122. The second abutment 122 restricts the position of the camera 131: either abutting against the second dental arch 22 or positioned approximately between the two dental arches, thereby enabling the camera 131 to capture images of at least a portion of the inner surfaces of the upper and lower dental arches.

[0095] The occlusal point of the patient's teeth against the second abutment 122 can form a fulcrum, and the camera 131 can rotate accordingly when the user or dentist rotates or moves the main unit 11 (such as a handle). This rotation mechanism allows images of the inner surfaces of the upper and lower dental arches to be captured from different angles as needed. For example, to obtain a better view of the molar region, the user or dentist can rotate the camera 131 to a position away from the molars, thereby acquiring images of the inner surfaces of the molars.

[0096] In some embodiments, the first abutment 121 and the second abutment 122 are used to limit the depth of the camera 131 inserted into the oral cavity to prevent the support 12 from extending too far into the oral cavity. In addition, by limiting the entry depth of the camera 131, it is possible to help the user find the shooting position more quickly, further improving usability and shortening the time required for shooting and adjusting the position.

[0097] It should be noted that the first abutment 121 and the second abutment 122 may include one or more protrusions. The protrusions can be positioned by abutting against the inner or outer surface of the teeth, thereby limiting the depth of the camera 131 inserted into the oral cavity.

[0098] In some embodiments, such as Figure 10 and Figure 11 As shown, the support member 12 is provided with a third abutment 123, which is located on the same side of the support member 12 and the camera 131. When the third abutment 123 is located on the same side of the first dental arch 21 and the second dental arch 22, the camera 131 is used to capture images of the outer surface of the upper teeth and / or the outer surface of the lower teeth.

[0099] In this way, the first abutment 121 can be abutted against the same side of the first dental arch 21 and the second dental arch 22, so that the camera 131 is separated from the outer surface of the upper teeth and / or the outer surface of the lower teeth, so that the camera 131 can capture images of the outer surface of the upper teeth and / or the outer surface of the lower teeth, thereby enabling the oral imaging device 100 of this application to acquire more comprehensive oral images.

[0100] The third abutment 123 may be a bent structure (e.g. Figure 12A and Figure 12B As shown), protrusions (such as) Figure 12C As shown), groove (as shown) Figure 12D At least one of the following (shown). When the third abutment 123 includes a groove, the camera 131 is disposed on the bottom surface of the groove.

[0101] In some embodiments, such as Figure 11 As shown, the camera 131 abuts against the tooth surface or the outer side of the jawbone via the third abutment 123 to separate the camera 131 from the tooth surface, so that the camera 131 maintains the required threshold distance for shooting, thereby allowing the camera 131 to maintain a better shooting distance from the tooth surface being shot, so as to obtain a better imaging effect.

[0102] In addition, when the support 12 is placed against the surface of the lower dental arch or the user's jaw via the third abutment 123, the camera 131 is located outside the mouth and captures images of all or part of the outer surface of the upper and lower dental arches. This allows a single oral imaging device 100 to perform both intraoral and extraoral scanning functions, thus forming an intraoral and extraoral combined oral imaging device 100.

[0103] The distinction between intraoral and extraoral is whether the camera 131 is inserted into the oral cavity (i.e., whether the camera 131 extends beyond the inner surface of the front teeth).

[0104] For example, the third abutment 123 can separate the camera 131 from the surface of the tooth being photographed, so that the camera 131 can maintain a better shooting distance from the surface of the tooth being photographed (for example, the distance is ≥8mm, such as 8mm, 10mm, 12mm, 14mm, etc.), thereby obtaining a better external surface imaging effect.

[0105] In some embodiments, such as Figure 11 As shown, the support member 12 is bent at the back of the camera 131 to form a first abutment 121, and a third abutment 123 is formed on the same side of the camera 131. The first abutment 121 is a groove, and the third abutment 123 is a protrusion. That is, by bending and arching the support member 12 from the image side of the camera 131 to the object side of the camera 131, the support member 12 can form a protrusion on the side where the light-incident surface of the camera 131 is located, serving as the third abutment 123, and form a groove on the side where the light-exit surface of the camera 131 is located, serving as the first abutment 121. The first abutment 121 and the third abutment 123 can be formed at the same time, which is more convenient and makes the overall structure of the support member 12 simpler.

[0106] Figure 13 This demonstrates commonly used types of oral images in clinical practice (complete dental arch view, anterior tooth area view, partial view of molar occlusal surface, etc.). Through the design of the first abutment 121, the second abutment 122, and the third abutment 123, the physician can adjust the angle and position of the camera 131 within the oral cavity to acquire these images.

[0107] like Figure 14 As shown, taking the average length of an adult dental arch H1 = H2 = 50 mm as an example, under the condition that the FOV angle γ of the camera 131 is ≥ 140°, when the light-receiving surface of the camera 131 is parallel to the upper dental arch and located at the midline of the dental arch, it is easiest to obtain a complete image of the upper dental arch. Let the user's mouth opening angle be β, and the tilt angle of the camera 131 be α, then β = α. Combining the clinical mouth opening range of 30°-45° for adults and 20°-30° for children, the optimal tilt angle α of the camera 131 is 25°-35°. With the fulcrum fine-tuning function of the first abutment 121, the oral imaging device 100 of this application can capture images covering the complete occlusal surface and part of the inner surface of the dental arch in a single shot.

[0108] In some embodiments, the cross-sectional dimension of the support member 12 in the direction perpendicular to its length extension is no greater than 300 mm², such as 213 mm², 220 mm², 230 mm², 240 mm², 250 mm², 260 mm², 270 mm², 280 mm², 290 mm², or 300 mm², etc.

[0109] If the cross-sectional area of ​​the support 12 is greater than 300mm^2, the support 12 may become too large, making it difficult to move in the oral cavity and potentially causing it to collide with the teeth, affecting the shooting effect and user experience.

[0110] Therefore, by ensuring that the cross-sectional area of ​​the support member 12 is no greater than 300 mm^2, the risk of collision between the support member 12 and the teeth is reduced. On the other hand, the smaller width allows the support member 12 to move more flexibly in the oral cavity, thereby improving the comfort and safety of using the oral imaging device 100.

[0111] In some embodiments, in the direction perpendicular to the length extension of the support member 12, at least one of the width and thickness is not greater than 20 mm, for example 5 mm, 6 mm, 6.5 mm, 7 mm, 7.2 mm, 7.5 mm, 8 mm, 8.4 mm, 8.5 mm, 8.8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, etc.

[0112] For example, the width of the support member 12 is not greater than 20 mm, or the thickness of the support member 12 is not greater than 20 mm, or both the width and thickness of the support member 12 are not greater than 20 mm.

[0113] If the width and / or thickness of the support 12 is greater than 20mm, the support 12 may become too large and difficult to move in the oral cavity, which may cause it to bump into the teeth, affecting the shooting effect and user experience.

[0114] Therefore, by ensuring that the width and / or thickness of the support 12 is no greater than 20mm, the risk of the support 12 colliding with the teeth is reduced, and the smaller width allows the support 12 to move more flexibly in the oral cavity, thereby improving the comfort and safety of using the oral imaging device 100.

[0115] In some embodiments, the distance between the camera 131 and the host 11 in the length extension direction of the support member 12 is greater than or equal to 20mm, such as 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, or 40mm. If the distance between the camera 131 and the host 11 is less than 20mm, the length of the support member 12 protruding relative to the host 11 is short, which may cause the camera 131 to be unable to fully extend into the oral cavity, thus making it difficult for the camera 131 to acquire images deep in the oral cavity, and limiting the shooting range.

[0116] Therefore, by making the distance between the camera 131 and the host 11 greater than 20mm, it is possible to ensure that the support 12 protrudes and extends sufficiently relative to the host 11, allowing the camera 131 to reach into the oral cavity and obtain more comprehensive and in-depth images of the oral cavity, such as images of the inner surface and occlusal surface of the molars near the throat.

[0117] In some embodiments, the length of the support member 12 in its length extension direction is greater than or equal to 18 mm, such as 18 mm, 20 mm, 22 mm, 25 mm, 28 mm, 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 42 mm, 44 mm, 46 mm or 50 mm, etc.

[0118] If the length of the support member 12 in its length extension direction is less than 18mm, the length of the support member 12 protruding from the host 11 is relatively short, which may cause the camera 131 to be unable to fully extend into the oral cavity, thus making it difficult for the camera 131 to obtain images deep in the oral cavity, and limiting the shooting range.

[0119] Therefore, by making the length of the support member 12 greater than 18mm in its length extension direction, it is possible to ensure that the support member 12 protrudes and extends sufficiently relative to the host 11, so that the camera 131 can be inserted into the oral cavity to obtain more comprehensive and in-depth images of the oral cavity, such as images of the inner surface and occlusal surface of the molars near the throat.

[0120] Furthermore, in the length extension direction of the support member 12, the distance between the camera 131 and the end face of the entrance end 12b is less than or equal to 8mm, for example, 0, 0.5mm, 1mm, 1.6mm, 2mm, 2.3mm, 2.5mm, 2.8mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, etc.

[0121] If the distance between the camera 131 and the end face of the inlet end 12b is greater than 8mm, the camera 131 may not be able to fully extend into the oral cavity, making it difficult for the camera 131 to obtain images of the deep part of the oral cavity, thus limiting the shooting range, or causing the support member 12 to poke into the soft tissue inside the oral cavity.

[0122] Therefore, by making the distance between the camera 131 and the end face of the entrance end 12b less than or equal to 8mm, on the one hand, the camera 131 can be extended into the oral cavity to obtain more comprehensive and in-depth images of the oral cavity, such as images of the inner surface and occlusal surface of the molars near the throat; on the other hand, it can prevent the support member 12 from extending excessively into the oral cavity, reducing interference and potential damage to the soft tissues in the oral cavity, and improving the comfort and safety of using the oral imaging device 100.

[0123] In some embodiments, the thickness of the portion of the inlet end 12b where the camera 131 is located is less than or equal to 15 mm. This dimensional design prevents the camera 131 from getting too close to the tooth surface being photographed, allowing the distance between the camera 131 and the tooth surface to be photographed to be controlled within a suitable shooting range, thus obtaining a wider shooting range and covering more tooth surfaces. For example, this allows the camera 131 to be positioned below or above the highest point of the first dental arch 21 in the patient's oral cavity, thereby increasing the distance between the camera 131 and the second dental arch 22, enabling a larger range or wider angle of imaging of the second dental arch 22, and obtaining a more complete or wider image of the second dental arch 22.

[0124] In some embodiments, the angle between the optical axis of the camera 131 and the length extension direction of the support member 12 is greater than or equal to 40° and less than or equal to 90°, such as 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85° or 90°, etc.

[0125] If the angle between the optical axis of camera 131 and the length extension direction of support member 12 is less than 40°, the optical axis of camera 131 needs to be adjusted at a greater angle to align with the occlusal surface, resulting in an inaccurate shooting angle and difficulty in clearly capturing details of the occlusal surface and some information of the inner surface. If the angle between the optical axis of camera 131 and the length extension direction of support member 12 is greater than 90°, the shooting angle of camera 131 may be too tilted. During shooting, not only is it easy for the optical axis of camera 131 to fail to accurately align with the occlusal surface, but it may also cause the shooting angle of the inner surface to be too offset, resulting in a blurry or incomplete image of the inner surface. Moreover, an excessively tilted shooting angle may also affect the contrast and clarity of the image, affecting the comprehensiveness of the tooth imaging.

[0126] The angle between the optical axis of the camera 131 and the length extension direction of the support member 12 (that is, the extension length direction of the host) is greater than or equal to 40° and less than or equal to 90°, which can provide a moderate angle fine adjustment function to ensure that the camera 131 can be aligned with the occlusal surface. In some cases, it can capture both the occlusal surface and the inner surface, effectively avoiding excessively tilted shooting angles and ensuring that the camera 131 can be aligned with both the occlusal surface and the inner surface during shooting.

[0127] In some embodiments, the optical axis of the camera 131 is tilted relative to the length extension direction of the support member 12, and the light-incident surface of the camera 131 is positioned away from the host 11.

[0128] This configuration ensures that when the user's mouth is open at a moderate angle, the angle between the optical axis of the camera 131 and the occlusal surface is approximately 90°. This means that the shooting surface of the camera 131 is as flat as possible with the occlusal surface, preventing the shooting angle from being too large and causing the occlusal surface tip features to block the pit and fissure features, thus making it impossible to capture the full view of the occlusal surface.

[0129] In some embodiments, the angle between the optical axis of the camera 131 and the length extension direction of the support member 12 is greater than or equal to 40° and less than or equal to 70°, such as 40°, 42°, 45°, 47°, 50°, 53°, 55°, 58°, 60°, 62°, 65°, 68° or 70°, etc.

[0130] The aforementioned size design ensures that, when the camera 131 is positioned at the entrance and the user's mouth is open to a suitable size, the camera 131 can be aligned with the occlusal surface. In some cases, it can capture both the occlusal surface and the inner surface, while effectively avoiding excessively tilted shooting angles. This ensures that the camera 131 can be aligned with both the occlusal surface and the inner surface during shooting. Furthermore, by limiting the angle between the optical axis of the camera 131 and the length extension direction of the support member 12 to within the range of 40°-70°, and by tilting the optical axis of the camera 131 relative to the support member 12, the user can find the shooting angle more quickly, reducing wrist bending and improving comfort during shooting.

[0131] In some embodiments, such as Figure 15 and Figure 16 As shown, the oral imaging device 100 also includes an mouth opener 14, which is connected to the main unit 11 and / or the support member 12. The mouth opener 14 is used to open the lips of the person being photographed, and the mouth opener 14 has a shooting through hole 1411, which corresponds to the camera 131 to ensure the imaging path, that is, the camera 131 can capture the image of the part to be photographed through the shooting through hole 1411.

[0132] The mouth opening device 14 is designed to prevent the lips from touching the gums. At this time, at least the outer surface of the teeth can correspond to the imaging through hole 1411, so that at least the outer surface of the teeth is within the imaging range of the camera 131, thereby making it easier for the camera 131 to obtain an image of at least the outer surface of the dental arch through the imaging through hole 1411.

[0133] In some embodiments, in the depth direction of the shooting through hole 1411, the cross-section of the shooting through hole 1411 has a major axis and a minor axis, and the major axis of the shooting through hole 1411 is parallel to the long side of the rectangular field of view of the camera 131.

[0134] With the mouth opener 14 in the user's mouth, the long axis of the imaging through-hole 1411 needs to be parallel to the horizontal plane when inserted into the oral cavity to accommodate the shape of the mouth after opening. The long axis of the imaging through-hole 1411 is parallel to the long side of the rectangular field of view of the camera 131. With the mouth opener 14 in the user's mouth, the long side of the rectangular field of view is parallel to the width direction of the dental arch (left-right direction), which helps the camera 131 to achieve a complete image of the outer surface of the dental arch.

[0135] In some embodiments, the mouth opener 14 is detachably connected to the main unit 11 and / or the support member 12; when the mouth opener 14 is connected to the main unit 11 and / or the support member 12, the camera 131 is used to capture at least the outer surface of the teeth; when the mouth opener 14 is separated from the main unit 11 and / or the support member 12, the camera 131 is used to capture at least the occlusal surface.

[0136] That is, when the mouth opener 14 is connected to the main unit 11 and / or the support member 12, the mouth opener 14 can open the oral cavity and support the lips to expose the outer surface of the teeth, so that the outer surface of the user's teeth can be aligned with the through hole of the mouth opener 14, thereby allowing the camera module 13 to receive at least the light reflected back from the outer surface of the teeth and capture an image. When the mouth opener 14 is removed from the main unit 11 and / or the support member 12, the camera module 13 can be inserted into the oral cavity to capture images of the inner surface and occlusal surface of the teeth. Since the camera module 13 can be inserted into the oral cavity, it can obtain a better shooting angle. It can be seen that the oral imaging device 100 of this application can achieve comprehensive imaging of the occlusal surface, inner surface, and outer surface of the teeth through extraoral imaging and in-oral imaging, and has a good shooting angle.

[0137] In some embodiments, the opening device 14 includes an opening 141 and a connecting portion 142. The connecting portion 142 is connected to the host 11, and a through hole is formed in the opening 141. On the projection plane perpendicular to the optical axis of the camera 131, the connection position of the connecting portion 142 and the host 11 is at least partially offset from the connection position of the connecting portion 142 and the opening 141. This enables an indirect connection between the opening 141 and the host 11. Compared to the opening 141 being directly connected to the host 11, the shift in the connection position between the opening device 14 and the host 11 decouples the connection position of the opening device 14 and the position of the opening 141 (the position of the camera through hole). That is, the connection position of the opening device 14 and the host 11 is not related to the position of the opening 141, eliminating the requirement for the location of the camera 131, and allowing for more flexible positioning of the camera 131.

[0138] In addition, the opening device 14 is connected to the host 11 through the connecting part 142, so there is no need to reserve a connection position for the opening device 14 on the support member 12, which makes the volume of the support member 12 smaller, thus facilitating the connection between the support member 12 and the camera 131 entrance.

[0139] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0140] Furthermore, the embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the content of this specification should not be construed as a limitation of this application, and the protection scope of this application should be determined by the appended claims.

Claims

1. An oral imaging device, characterized in that, include: A host computer, which is designed to be held in the hand, and is equipped with a controller; A support member having a connecting end and an inlet end distributed along its own length extension direction, the connecting end being connected to the host, and the inlet end being at least for extending into the mouth of the subject being photographed. as well as, A camera module is installed at the entrance end. The camera module includes a camera and multiple light sources arranged around the camera at intervals. The controller is used to control the camera and the light sources. The field of view of the camera is greater than or equal to 140°. When the support is located between two dental arches, the camera is used to capture an image of the occlusal surface of at least one dental arch.

2. The oral imaging device according to claim 1, characterized in that, In the direction perpendicular to the length of the support member, the cross-section of the host is larger than the cross-section of the support member.

3. The oral imaging device according to claim 1, characterized in that, The host and the support are integrally rod-shaped, or the host is block-shaped and the support is rod-shaped or pole-shaped.

4. The oral imaging device according to claim 1, characterized in that, The field of view of the camera is greater than or equal to 170°.

5. The oral imaging device according to claim 1, characterized in that, The camera has a rectangular field of view, and the shorter side of the rectangular field of view is parallel to the length extension direction of the support member.

6. The oral imaging device according to claim 1, characterized in that, The images of the occlusal surfaces include panoramic images of the occlusal surfaces.

7. The oral imaging device according to claim 1, characterized in that, When the support is located between the two dental arches, the camera is also used to capture images of a portion of the inner surface of at least one of the two dental arches.

8. The oral imaging device according to claim 1, characterized in that, The support member is provided with a first abutment part; The two dental arches include a first dental arch and a second dental arch. When the support abuts against the first dental arch via the first abutment, the camera is used to capture an image of the second dental arch.

9. The oral imaging device according to claim 8, characterized in that, The surface of the first abutment that contacts the first dental arch is straight, flat, or smooth in the width or thickness direction of the support.

10. The oral imaging device according to claim 8, characterized in that, The first abutment includes at least one of a groove, a protrusion, and a bent structure.

11. The oral imaging device according to claim 8, characterized in that, The first abutment and the camera are located on opposite sides of the support member; When the first abutment abuts against the incisor of the first dental arch, the camera is used to capture an image of the occlusal surface of the second dental arch.

12. The oral imaging device according to claim 8, characterized in that, The support member is flat and elongated. The first abutment and the camera are located on opposite sides of the support member in the thickness direction. The bottom surface of the first abutment or at least one side of the support member in the thickness direction is a plane.

13. The oral imaging device according to claim 1, characterized in that, The support member is provided with a second abutment. The second abutment and the camera are located on adjacent sides of the support member; The dental arch includes a first dental arch and a second dental arch. When the second abutment abuts against the first dental arch and / or the second dental arch, the camera is used to capture images of the inner surfaces of the upper teeth and / or the inner surfaces of the lower teeth.

14. The oral imaging device according to claim 1, characterized in that, The support member is provided with a third abutment, and the third abutment and the camera are located on the same side of the support member; The dental arch includes a first dental arch and a second dental arch. When the third abutment is located on the same side of the first dental arch and the second dental arch, the camera is used to capture images of the outer surface of the upper teeth and / or the outer surface of the lower teeth.

15. The oral imaging device according to claim 14, characterized in that, The camera is abutted against the tooth surface or the outer side of the jawbone by the third abutment to separate the camera from the tooth surface so that the camera maintains the required threshold distance for shooting.

16. The oral imaging device according to claim 1, characterized in that, The support member is provided with at least two of the following: a first abutment, a second abutment, and a third abutment; wherein... The first abutment and the second abutment are used to limit the depth of the camera inserted into the oral cavity; The first abutment and the third abutment are used to increase the distance between the camera and the dental arch being photographed.

17. The oral imaging device according to claim 16, characterized in that, The support member is bent on the back side of the camera to form the first abutment part, and on the same side of the camera to form the third abutment part. The first abutment part is a groove, and the third abutment part is a protrusion.

18. The oral imaging device according to claim 1, characterized in that, The oral imaging device further includes an mouth opener connected to the main unit and / or the support member. The mouth opener is used to open the lips of the subject being photographed, and the mouth opener has a shooting through hole corresponding to the camera. In the depth direction of the shooting through hole, the cross-section of the shooting through hole has a major axis and a minor axis, and the major axis of the shooting through hole is parallel to the long side of the rectangular field of view of the camera.

19. The oral imaging device according to claim 18, characterized in that, The opening device is detachably connected to the main unit and / or the support member; When the mouth opener is with the main unit and / or the support, the camera is used at least to photograph the outer surface of the teeth; When the mouth opener is separated from the host and / or the support, the camera is used to capture at least the occlusal surface.

20. The oral imaging device according to claim 18, characterized in that, The opening device includes an opening and a connecting part, the connecting part being connected to the main unit, and the through hole being formed in the opening; On the projection plane perpendicular to the optical axis of the camera, the connection position of the connecting part to the host is at least partially offset from the connection position of the connecting part to the opening.

21. The oral imaging device according to any one of claims 1-20, characterized in that, In the direction perpendicular to the length of the support member, the cross-sectional dimension of the support member is no greater than 300 mm²; or, In the direction perpendicular to the length of the support member, at least one of the width and thickness of the support member is not greater than 20 mm.

22. The oral imaging device according to any one of claims 1-20, characterized in that, In the longitudinal extension direction of the support member, the distance between the camera and the host is greater than or equal to 20mm; and / or The length of the support member in its length extension direction is greater than or equal to 18mm, and the distance between the camera and the end face of the entrance end in the length extension direction of the support member is less than or equal to 8mm.

23. The oral imaging device according to any one of claims 1-20, characterized in that, The thickness of the location where the camera is located at the entrance end is less than or equal to 15mm.

24. The oral imaging device according to any one of claims 1-20, characterized in that, The angle between the optical axis of the camera and the length extension direction of the support member is greater than or equal to 40° and less than or equal to 90°.

25. The oral imaging device according to any one of claims 1-20, characterized in that, In the direction away from the host in the length extension direction of the support member, the optical axis of the camera is tilted away from the host from the direction where the camera is located.

26. The oral imaging device according to claim 25, characterized in that, The angle between the optical axis of the camera and the length extension direction of the support member is greater than or equal to 40° and less than or equal to 70°.

27. The oral imaging device according to any one of claims 1-20, characterized in that, The wavelength range of the light source is selected from at least one of the following: 315-400nm, 380-750nm, 450-500nm, or 750-1500nm.

28. The oral imaging device according to any one of claims 1-20, characterized in that, Of the two light sources that are furthest apart, one is the first light source and the other is the second light source. The intersection of the light emission range contour line of the first light source and the light emission range contour line of the second light source is defined as the first intersection point. The intersection of the light emission range contour line of either the first light source or the second light source and the shooting range contour line of the camera is defined as the second intersection point. Wherein, the distance from the first intersection point to the surface where the light source is located is configured as L1, the distance between the first intersection point and the second intersection point is configured as L2, L1≤10mm, L1+L2≥30mm.

29. The oral imaging device according to any one of claims 1-20, characterized in that, In the direction from the image side of the camera to the object side of the camera, the light source is lower than the light-incident surface of the camera, and in the direction from the object side of the camera to the image side of the camera, the light source is lower than the light-exit surface of the camera.

Images