Oral cavity scanning device

Abstract

The utility model provides an oral cavity scanning device. The oral cavity scanning device comprises a host, an opening assembly and a light blocking piece. The host comprises a shell, a light-emitting module, a camera module and a light-transmitting part. The light-emitting module is arranged on the shell and used for emitting light to the outside of the shell. The camera module is arranged on the shell and is separated from the light-emitting module. And the camera module is used for receiving the light reflected by the internal part of the oral cavity. The light-transmitting piece is arranged on the shell and is opposite to the light-emitting module and the camera module, and the light-transmitting piece is used for transmitting light. The opening assembly is connected with the host and surrounds the camera module, and the opening assembly is provided with a first opening and a second opening which penetrate through the two opposite ends. The camera module corresponds to the second opening, and the end where the first opening is located is used for abutting against any part in the oral cavity. The light blocking piece is arranged on the light emitting path of the light emitting module and used for blocking at least part of light emitted by the light emitting module and enabling the light emitted from the first opening to completely cover the first opening.

Description

Technical Field

[0001] The present application relates to the field of oral scanning technology, and in particular to an oral scanning device. Background Art

[0002] Currently, oral scanning devices typically include a light module (such as a fill light) and a camera module. The camera module is used to capture intraoral images (e.g., images of teeth) to analyze the user's oral condition and promptly identify oral problems. Because the intraoral imaging environment is poor, the camera module cannot capture clear images. Therefore, the light module is required to emit light to improve the intraoral imaging environment, allowing the camera module to capture clear images.

[0003] However, when the light emitting module emits light, the light is easily blocked by obstructions, resulting in dark light in some areas within the imaging range of the camera module, which affects the imaging quality of the camera module. Utility Model Content

[0004] In view of the above problems, the present application provides an oral scanning device.

[0005] An embodiment of the present application provides an oral scanning device. The oral scanning device includes a main unit, an opening assembly and a light blocking member. The main unit includes a housing, a light emitting module, a camera module and a light-transmitting member. The light emitting module is arranged in the housing and is used to emit light outside the housing. The camera module is arranged in the housing. The camera module is used to receive light reflected back from the interior of the oral cavity. The light-transmitting member is arranged in the housing and is opposite to both the light emitting module and the camera module, and is used to transmit the light. The opening assembly is connected to the main unit and surrounds the camera module. The opening assembly is provided with a first opening and a second opening passing through opposite ends. The camera module corresponds to the second opening, and one end where the first opening is located is used to abut against any part of the oral cavity. The light blocking member is arranged on the light output path of the light emitting module and is used to block at least part of the light emitted by the light emitting module, and to enable the light emitted from the first opening to completely cover the first opening.

[0006] The oral scanning device of the present application is provided with a light blocking member on the light output path of the light emitting module, which is used to block at least part of the light emitted by the light emitting module, thereby preventing at least part of the light reflected by the light-transmitting member from entering the camera module and affecting the imaging quality of the camera module; at the same time, the light blocking member can also enable the light emitted by the light emitting module and emitted from the first opening to completely cover the first opening, thereby avoiding the situation where some areas within the imaging range of the camera module are too dark, thereby further ensuring the imaging quality of the camera module.

[0007] In some embodiments, the light emitting module includes a light source, and the light emitted by the light source at least covers the end of the opening component away from the host.

[0008] The light emitted by a single light source can cover at least the end of the opening assembly away from the main unit, ensuring that the area within the oral cavity illuminated by the light emitted by the light module is at least consistent with the field of view of the camera module. All areas within the camera module's imaging range have high brightness, thus ensuring the camera module's imaging quality. Furthermore, the single light source not only saves component costs, but also allows the light module to be smaller, occupying less space within the housing, freeing up more space for other components.

[0009] In some embodiments, the light emitting module includes a plurality of light sources, and the union range of the light emitted by the plurality of light sources at least covers the end of the opening component away from the host.

[0010] The combined light from the multiple light sources covers at least the end of the opening assembly facing away from the main unit, ensuring that the area within the oral cavity illuminated by the light from the light-emitting module is at least consistent with the camera module's field of view. This ensures high brightness across all areas within the camera module's imaging range, thus ensuring high-quality imaging. Furthermore, a single light source can be used with lower power or standard specifications, also saving costs.

[0011] In some embodiments, the light emitting module includes a plurality of light sources, and the light emitted by any one of the plurality of light sources at least covers the end of the opening component away from the host.

[0012] The light emitted by any one of the multiple light sources can at least cover the end of the opening component away from the main unit, ensuring that the area within the oral cavity illuminated by the light emitted by the light-emitting module is at least consistent with the field of view of the camera module. All areas within the imaging range of the camera module have high brightness, thereby ensuring the imaging quality of the camera module. At the same time, if one of the light sources is damaged and cannot be used, the other light sources can still emit light that can cover the end of the opening component away from the main unit. In other words, the other light sources can still provide fill light, and the supplementary light will not cause the problem of localized darkness.

[0013] In some embodiments, the light emitting module includes multiple light sources, which are used to emit light of different wavelengths, and the union range formed by the light sources emitting light of the same wavelength covers at least one end of the opening component away from the host.

[0014] Multiple light sources are used to emit light of different wavelengths, enabling the camera module to produce clear images even in supplemental lighting environments with varying wavelengths. Furthermore, the combined range of light emitted by light sources emitting light of the same wavelength can cover at least the end of the opening assembly away from the main unit. This ensures that the area within the oral cavity illuminated by the light emitted by the light-emitting module is at least consistent with the camera module's field of view. All areas within the camera module's imaging range have high brightness, thus ensuring the camera module's imaging quality.

[0015] In some embodiments, the light blocking member includes a light isolating member, which is arranged between the light transmitting member and the camera module in the optical axis direction of the camera module and is used to block at least part of the light emitted by the light emitting module and reflected by the light transmitting member from entering the camera module.

[0016] The light-isolating member blocks at least part of the light emitted by the light-emitting module and reflected by the light-transmitting member from entering the camera module, thereby preventing this part of the stray light from being received by the camera module as imaging light and participating in imaging, thereby ensuring that there are no ghost images in the images captured by the camera module, thereby improving the imaging quality of the camera module.

[0017] In some embodiments, the camera module is at least partially located in the light isolation member, and the hardness of the light isolation member is less than the hardness of the light transmissive member.

[0018] A light-transmitting member with a high hardness is less prone to shattering and can consistently protect components within the housing, such as the camera module and light-emitting module, from being affected by dust, moisture, or other impurities. A light-transmitting member with a high hardness is also less susceptible to wear and scratching, thereby ensuring good light transmission performance. The camera module is at least partially located within the light-isolating member, which reduces or even eliminates the chance of stray light bypassing the light-isolating member and entering the camera module's imaging range, further ensuring that ghost images are absent in images captured by the camera module and improving the camera module's imaging quality.

[0019] In some embodiments, the light-transmitting member includes a lens, and the light-isolating member is a deformable light-isolating member.

[0020] The light-transmitting element is a lens, ensuring both high hardness and excellent light transmission. Furthermore, the deformable light-isolating element is easy to install and forms a tight fit with the camera module, preventing stray light reflected by the light-transmitting element from entering the camera module's imaging range through the gap between the light-isolating element and the camera module. This improves the stray light isolation effect and ensures the camera module's imaging quality. Furthermore, the deformable light-isolating element provides a certain degree of cushioning and adequate support for the light-transmitting element, preventing it from being crushed.

[0021] In some embodiments, the light-isolating member includes an inner wall and an outer wall, the inner wall is closer to the optical axis of the camera module than the outer wall, and the intersection of the line connecting the center of the light source of the light-emitting module and the outer wall of the light-isolating member and the optical axis of the camera module is located inside the opening component.

[0022] The intersection is located inside the opening component, ensuring that the illumination ranges of multiple light sources intersect, so that all areas within the imaging range of the camera module have high brightness, thereby ensuring the imaging quality of the camera module.

[0023] In some embodiments, a light-shielding layer is provided between the light-isolating member and the light-transmitting member in the direction of the optical axis, and the light-shielding layer is configured to absorb at least a portion of the light emitted by the light-emitting module.

[0024] The light shielding layer can absorb at least part of the light emitted by the light emitting module, thereby preventing part of the light from being reflected by the light-transmitting component and forming stray light that affects the imaging quality of the camera module.

[0025] In some embodiments, in the circumferential direction of the camera module, the width of the light shielding layer is greater than the width of the light partition.

[0026] The width of the shading layer is greater than the width of the light-isolating member, which ensures that a shading layer is formed around the light-isolating member, so that at least part of the light emitted by the light-emitting module to the light-isolating member can be absorbed by the shading layer, thereby reducing the stray light reflected by the transparent member and affecting the imaging quality of the camera module.

[0027] In some embodiments, the light shielding layer includes an inner ring and an outer ring. The inner ring and the outer ring are located on either side of the light barrier, respectively, along the circumference of the camera module. The outer ring is further away from the optical axis of the camera module than the inner ring, and the outer ring of the light shielding layer is at least partially located within the light emitting range of the light emitting module.

[0028] The outer ring of the light-shielding layer is at least partially located within the light-emitting range of the light-emitting module. At least part of the light emitted by the light-emitting module to the outside of the light-isolating member can be absorbed by the outer ring of the light-shielding layer, thereby reducing the stray light reflected by the transparent member and affecting the imaging quality of the camera module.

[0029] In some embodiments, the light shielding layer includes an inner ring and an outer ring. The inner ring and the outer ring are located on either side of the light barrier, respectively, along the circumference of the camera module. The outer ring is further away from the optical axis of the camera module than the inner ring, and at least a portion of the inner ring of the light shielding layer is located outside the imaging range of the camera module.

[0030] The inner circle of the light-shielding layer is at least partially located outside the imaging range of the camera module. On the one hand, it can ensure the effect of the light-shielding layer in isolating stray light. On the other hand, it can prevent part of the light-shielding layer from blocking the imaging light reflected back to the camera module from the inside of the mouth, thereby avoiding affecting the normal imaging of the camera module.

[0031] In some embodiments, the light blocking member further includes an abutment portion, wherein the abutment portion is provided on an inner wall of the opening component and extends from the inner wall of the opening component toward an axis of the opening component.

[0032] The abutment portion can block part of the light emitted from the light-emitting module from being emitted to the inner wall of the opening component and then reflected once or multiple times before entering the camera module, thereby preventing this part of the stray light from being received by the camera module as imaging light and participating in imaging, thereby ensuring that there are no ghost images in the images captured by the camera module, thereby improving the imaging quality of the camera module.

[0033] In some embodiments, the host includes a light-emitting module, and a first angle between a line from the center of the light source of the light-emitting module to the inner edge of the abutment portion and the optical axis of the camera module is greater than a second angle between a line from the center of the light source to the inner edge of an end of the opening component away from the camera module and the optical axis of the camera module.

[0034] The first angle can be used to limit the outermost edge of the illumination range of the light-emitting module, and the second angle can be used to limit the outermost edge of the imaging range of the camera module. The first angle is greater than the second angle, that is, the illumination range of the light-emitting module covers the imaging range of the camera module, and all areas within the imaging range of the camera module have high brightness, thereby ensuring the imaging quality of the camera module.

[0035] In some embodiments, the opening assembly includes a support member and a deformable member, at least a portion of the deformable member is mounted on one end of the support member, the other end of the support member is connected to the host, the abutment portion is provided on the support member, the abutment portion extends from the inner wall of the support member in a direction close to the axis of the opening assembly, and the abutment portion abuts against the side of the light-transmitting member away from the camera module.

[0036] The support member is located at the end closest to the main unit, ensuring a stable connection between the support member and the main unit, and preventing it from scratching the mouth when being put into or taken out of the mouth, causing it to fall off. At least a portion of the deformable member is located at the end of the support member away from the main unit, ensuring a softer contact with the mouth, and preventing it from puncturing or scratching the user. The abutment portion abuts against the side of the light-transmitting member away from the camera module, clamping and securing the light-transmitting member in the direction of the optical axis, preventing it from falling off.

[0037] In some embodiments, the light emitting module includes a plurality of light sources, which surround the periphery of the camera module and are spaced apart from the light-transmitting member. The light-isolating member is annular and is disposed on the end face of the camera module close to the light-transmitting member.

[0038] Multiple light sources surround the perimeter of the camera module, creating a uniform light pattern. This ensures uniform lighting around the camera module, further preventing areas of excessive darkness within the camera module's imaging range and ensuring high-quality imaging. The light barrier is annular, coinciding with the arrangement of the light sources, ensuring its ability to isolate stray light and maintain high-quality imaging.

[0039] In some embodiments, the thickness of the light-transmitting member in the optical axis direction of the camera module is less than or equal to 4 mm.

[0040] The thickness of the light-transmitting component is less than or equal to 4 mm, which not only controls the weight and cost of the light-transmitting component within a reasonable range, but also shortens the path of the light emitted by the light-emitting module through the light-transmitting component, reduces the light absorbed and scattered by the light-transmitting component itself, and reduces the light reflected from the side of the light-transmitting component away from the light-emitting module and then entering the camera module, thereby reducing interference and ensuring the imaging quality of the camera module.

[0041] In some embodiments, in the optical axis direction of the camera module, a first distance between the camera module and the light-transmitting member is smaller than a second distance between the light-emitting module and the light-transmitting member.

[0042] The first distance is smaller than the second distance, that is, the height of the camera module is greater than the height of the light-emitting module, ensuring that the light-transmitting part will not squeeze the light-emitting module during assembly, and also allowing the light-transmitting part to be supported by the light-isolating part between the camera module and the light-transmitting part, facilitating the fixed installation of the light-transmitting part.

[0043] In some embodiments, the light-emitting module includes multiple light sources, the multiple light sources are used to emit light of different wavelength bands, and the multiple light sources emit light alternately.

[0044] Multiple light sources can emit light of different wavelengths, which can capture different image information. The camera module can capture richer image information when supplemented with different light sources. The alternating emission of multiple light sources also allows the oral scanner to provide different scanning modes, expanding its application scenarios.

[0045] In some embodiments, the plurality of light sources include a first light source and a second light source, wherein the first light source is configured to emit light of a first wavelength band, and the second light source is configured to emit light of a second wavelength band, wherein the first wavelength band is different from the second wavelength band.

[0046] The light of the first band and the light of the second band pass through the light-transmitting component and are reflected inside the oral cavity, and can carry different information back to the camera module, thereby enabling the camera module to obtain richer image information.

[0047] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0049] Figure 1 is a schematic three-dimensional assembly diagram of an oral scanning device according to certain embodiments of the present application;

[0050] Figure 2 yes Figure 1 A schematic exploded perspective view of the oral scanning device shown;

[0051] Figure 3 yes Figure 1 A schematic exploded perspective view of the oral scanning device shown;

[0052] Figure 4 yes Figure 1 A cross-sectional schematic diagram of the oral scanning device shown;

[0053] Figure 5 yes Figure 4 Enlarged schematic diagram of point V in the middle.

[0054] Description of main component symbols:

[0055] Oral scanning device 100; main unit 10; camera module 11; lens base 111; lens barrel 113; housing 12; first base 121; second base 122; light-emitting module 13; light source 131; first light source 1311; second light source 1312; partition 133; light-transmitting member 14; light-blocking member 15; light-isolating member 151; inner side wall 1511; outer side wall 1533; light-shielding layer 153; inner ring 1531; outer ring 1533; main board 17; opening assembly 30; first opening 31; second opening 32; support member 33; abutment portion 337; inner wall 301; deformable member 35. DETAILED DESCRIPTION

[0056] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0057] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0059] See also Figures 1 to 3 , an embodiment of the present application provides an oral scanning device 100. The oral scanning device includes a main body 10, an opening assembly 30 and a light blocking member 15. The main body 10 includes a camera module 11, a shell 12, a light emitting module 13 and a light transmitting member 14. The light emitting module 13 is arranged in the shell 12 and is used to emit light outside the shell 12. The camera module 11 is arranged in the shell 12. The camera module 11 is used to receive light reflected back from the interior of the oral cavity. The light transmitting member 14 is arranged in the shell 12 and is opposite to the light emitting module 13 and the camera module 11. The light transmitting member 14 is used to transmit light. The opening assembly 30 is connected to the main body 10 and surrounds the camera module 11. The opening assembly 30 is provided with a first opening 31 and a second opening 32 that pass through the opposite ends. The camera module 11 corresponds to the second opening 32, and the end where the first opening 31 is located is used to abut against any part in the oral cavity. The light blocking member 15 is disposed in the light emission path of the light emitting module 13 and is used to block at least a portion of the light emitted by the light emitting module 13 and to allow the light emitted from the first opening 31 to completely cover the first opening 31 .

[0060] The oral scanning device 100 is an instrument for detecting the state of the human oral cavity, and includes a main unit 10 and an opening component 30. During use, the opening component 30 is placed against the human oral cavity, and the main unit 10 captures images and / or video information of the interior of the oral cavity to analyze the condition of the user's oral cavity.

[0061] Specifically, the shell 12 is a structure for mounting other components of the host 10 and accommodating the other components inside the shell 12. The shell 12 can protect the other components. The other components include but are not limited to the light-emitting module 13, the camera module 11, the light-transmitting member 14 and the light-isolating member 151. The cross-sectional shape of the shell 12 can be, but is not limited to, circular, elliptical, rectangular or other polygonal shapes. The cross-sectional shape of the shell 12 of the present application is a runway shape. The material of the shell 12 can be plastic or metal. When the material of the shell 12 is plastic, the shell 12 has good insulation performance, low cost and light weight. When the material of the shell 12 is metal, the shell 12 has high strength, good wear resistance and long service life. The shell 12 can be integrally formed or split-formed. The split-formed shell 12 includes a first base body 121 and a second base body 122. The first base body 121 and the second base body 122 are connected together in a detachable or non-detachable connection manner.

[0062] The light-emitting module 13 is housed inside the shell 12 and is used to emit light. The light-emitting module 13 includes but is not limited to LED lamps, laser diodes or other types of light-emitting elements. The light-emitting module 13 can emit visible light to the outside of the shell 12 to illuminate the interior of the oral cavity, and can also emit light of a specific wavelength band, such as fluorescence or ultraviolet light, to meet different imaging needs. The light-emitting module 13 can be one or more, and is not limited in this application. It is understandable that the light-emitting module 13 can adjust the emitted light to adjust the brightness, color temperature, direction and other properties of the light according to different environments in the oral cavity. The adjustment methods include but are not limited to setting knob adjustment, touch screen adjustment, voice control adjustment, software interface adjustment or automatic adjustment by built-in sensors, etc. Under different environments in the oral cavity, the light-emitting module 13 can provide light of different types and intensities to improve the environment in the oral cavity and provide a good imaging environment for the camera module 11.

[0063] The camera module 11 is located within the housing 12 and is capable of capturing and receiving light reflected from the interior of the oral cavity. The light is processed by the camera module 11 to form an image or video. The light received by the camera module 11 includes, but is not limited to, natural light, infrared light, and ultraviolet light. The number of camera modules 11 can be one or more (two or more), and is not limited in this application.

[0064] In one example, the camera module 11 can be a two-dimensional camera module. In this case, the two-dimensional camera module includes a lens and an image sensor. The lens collects light within the field of view (light from the area to be scanned) and transmits the light to the image sensor. The image sensor converts the light signal into an electrical signal, and after a series of conversions, it ultimately forms a two-dimensional image. For example, the camera module 11 can be a two-dimensional infrared camera module. In this case, the light-emitting module 13 is used to emit infrared light. The infrared light emitted by the light-emitting module 13 is irradiated on the area to be scanned. The interior of the oral cavity will reflect a portion of the infrared light. The infrared camera module captures the reflected infrared light and converts it into a digital signal. After the digital signal is processed by a computer, an infrared image can be generated. For another example, the camera module 11 can be a two-dimensional ultraviolet camera module. In this case, the light-emitting module 13 is used to emit ultraviolet light. The ultraviolet light emitted by the light-emitting module 13 is irradiated on the area to be scanned. The interior of the oral cavity will reflect a portion of the ultraviolet light. The infrared camera module captures the reflected ultraviolet light and converts it into a digital signal. After the digital signal is processed by a computer, an ultraviolet image can be generated.

[0065] In another example, the camera module 11 may be a time-of-flight camera. The time-of-flight camera first emits a laser pulse to illuminate the part to be scanned. The laser pulse reaches the object to be photographed and is reflected back. The time-of-flight camera can calculate the distance from the part to be scanned to the time-of-flight camera by the time the pulse is emitted and the time it is reflected back, thereby forming a three-dimensional image. This application is described as an example in which the camera module 11 is a two-dimensional camera module. In an embodiment in which the camera module 11 is a two-dimensional camera module, the camera module 11 includes a lens base 111 and a lens barrel 113, and the host 10 also includes a main board 17. The lens base 111 of the camera module 11 is mounted on the main board 17 and is electrically connected to the main board 17. The lens barrel 113 is used to guide the reflected light to the image sensor for imaging.

[0066] The light-transmitting member 14 is arranged opposite to the light-emitting module 13, and is also arranged opposite to the camera module 11. The light-transmitting member 14 can be made of materials such as glass, plastic or crystal. The light-transmitting member 14 can serve as a barrier between the external environment and the camera module 11, preventing dust, moisture or other dirt from entering the interior of the housing 12, and protecting the light-emitting module 13 and the camera module 11 from contamination. The light-transmitting member 14 can also have certain optical properties. When the light-emitting module 13 is working, the light emitted by the light-emitting module 13 can pass through the light-transmitting member 14 and be emitted to the inner part of the oral cavity, and the light reflected by the inner part of the oral cavity can also pass through the light-transmitting member 14 and enter the camera module 11 to generate an image. The light-transmitting member 14 can pass through the light emitted by the light-emitting module 13, ensuring that the light can effectively illuminate the inner part of the oral cavity, improving the ambient brightness in the oral cavity, and thus improving the imaging quality of the camera module 11. There can be one or more light-transmitting members 14. In embodiments where there are multiple light-transmitting members 14, the size, shape, or transmittance of the multiple light-transmitting members 14 may be different or the same. Furthermore, the light-transmitting members 14 may be coated with coatings having different optical properties, such as an anti-reflection coating to increase light transmittance, an anti-reflection coating to reduce stray reflections, a filter coating to filter light of specific wavelengths, and an anti-fog coating to prevent fogging.

[0067] The opening assembly 30 is detachably or non-detachably connected to the main unit 10. It has a first opening 31 and a second opening 32 extending through opposite ends. The second opening 32 of the opening assembly 30 is connected to the main unit 10 and corresponds to the camera module 11. The opening assembly 30 is used to maintain a certain distance between the camera module 11 and the area to be scanned (e.g., the interior of the oral cavity), preventing the camera module 11 from being too close to the interior of the oral cavity, which could result in out-of-focus images.

[0068] When the oral cavity scanning device 100 needs to scan the oral cavity, the first opening 31 of the opening assembly 30 can be placed against an internal part of the user's oral cavity, such as the gums or teeth, so that the area to be scanned aligns with the first opening 31. The camera module 11 can then capture an image of the area to be scanned through the first opening 31. Because the opening assembly 30 creates a certain distance between the area to be scanned and the camera module 11, the area to be scanned is within the imaging range of the camera module 11, resulting in a clearer image captured by the camera module 11. Other components within the main unit 10 can accurately capture the current oral condition from the captured image, and the user can also intuitively understand the current oral condition from the captured image, resulting in a better scanning effect of the oral cavity scanning device 100.

[0069] The light blocking member 15 is arranged on the light output path of the light emitting module 13, and is used to block at least part of the light emitted by the light emitting module 13 and reflected by the light transmitting member 14 from entering the camera module 11, and to enable the light emitted from the first opening 31 to completely cover the first opening 31. The light blocking member 15 can be one or more. In an embodiment where there are multiple light blocking members 15, the size, shape and other properties of the multiple light blocking members 15 can be different or the same. More specifically, a part of the light emitted by the light emitting module 13 can pass through the light transmitting member 14 and be emitted into the oral cavity. After the light is reflected inside the oral cavity, it can pass through the light transmitting member 14 and enter the camera module 11. However, if the light blocking member 15 is not provided, a part of the light will not be emitted into the oral cavity, but will be directly reflected by the light transmitting member into the imaging range of the camera module, affecting the imaging quality of the camera module.

[0070] The oral scanning device 100 of the present application is provided with a light blocking member 15 on the light output path of the light emitting module 13. The light blocking member 15 is used to block at least part of the light emitted by the light emitting module 13, thereby preventing at least part of the light reflected by the light transmitting member 14 from entering the camera module 11 and affecting the imaging quality of the camera module 11. At the same time, the light blocking member 15 can also enable the light emitted by the light emitting module 13 and emitted from the first opening 31 to completely cover the first opening 31, thereby preventing some areas within the imaging range of the camera module 11 from being too dark, thereby further ensuring the imaging quality of the camera module 11.

[0071] See also Figure 3 and Figure 4 In some embodiments, the light emitting module 13 includes a light source 131, and the light emitted by the light source 131 covers at least one end of the opening component 30 away from the main body 10. Specifically, the light emitted by the light source 131 covers at least the first opening 31 of the opening component 30. The light emitted by one light source 131 can at least cover the end of the opening component 30 away from the main body 10, so that the area inside the oral cavity illuminated by the light emitted by the light emitting module 13 is at least consistent with the field of view angle range of the camera module 11, and all areas within the imaging range of the camera module 11 have high brightness, thereby ensuring the imaging quality of the camera module 11. Moreover, the number of light sources 131 is only one, which can save parts costs on the one hand, and on the other hand, the light emitting module 13 can be made smaller, and the space occupied in the shell 12 is also smaller, which can free up more installation space for other parts.

[0072] See also Figure 3 and Figure 4In some embodiments, the light-emitting module 13 includes a plurality of light sources 131, and the union range formed by the light emitted by the plurality of light sources 131 covers at least one end of the opening component 30 away from the main unit 10. Specifically, the union range of the light emitted by the plurality of light sources 131 covers at least the first opening 31 of the opening component 30. The union range of the light emitted by the plurality of light sources 131 can cover at least one end of the opening component 30 away from the main unit 10 (the first opening 31), so that the area inside the oral cavity illuminated by the light emitted by the light-emitting module 13 is at least consistent with the field of view angle range of the camera module 11, and all areas within the imaging range of the camera module 11 have high brightness, thereby ensuring the imaging quality of the camera module 11. At the same time, a single light source 131 can adopt a smaller power or ordinary specifications, which can also save costs.

[0073] See also Figure 3 and Figure 4 In some embodiments, the light emitted by any one of the multiple light sources 131 can at least cover the end of the opening component 30 away from the main unit 10. Specifically, the light emitted by any one of the multiple light sources 131 can at least cover the end of the opening component 30 away from the main unit 10 (the first opening 31), so that the area inside the oral cavity illuminated by the light emitted by the light-emitting module 13 is at least consistent with the field of view angle range of the camera module 11, and all areas within the imaging range of the camera module 11 have high brightness, thereby ensuring the imaging quality of the camera module 11. At the same time, if one of the light sources 131 is damaged and cannot be used, the other light sources 131 can still emit light that can cover the end of the opening component 30 away from the main unit 10, that is, the other light sources 131 can still play a fill light role, and the supplementary light will not have the problem of local darkness.

[0074] See also Figure 3 and Figure 4 In some embodiments, the light-emitting module 13 includes a plurality of light sources 131, and the plurality of light sources 131 are used to emit light of different wavelength bands. The union range formed by the light sources 131 that emit light of the same wavelength band at least covers the end of the opening component 30 away from the main unit 10 (the first opening 31). The plurality of light sources 131 are used to emit light of different wavelength bands, so that the camera module 11 can clearly image in fill light environments of different wavelength bands. At the same time, the union range formed by the light sources 131 that emit light of the same wavelength band can at least cover the end of the opening component 30 away from the main unit 10, so that the area inside the oral cavity illuminated by the light emitted by the light-emitting module 13 is at least consistent with the field of view angle range of the camera module 11, and all areas within the imaging range of the camera module 11 have high brightness, thereby ensuring the imaging quality of the camera module 11.

[0075] See also Figure 3 and Figure 4 In some embodiments, the light blocking member 15 includes a light isolating member 151. In the optical axis direction of the camera module 11, the light isolating member 151 is arranged between the light transmitting member 14 and the camera module 11, and is used to block at least part of the light emitted by the light emitting module 13 and reflected by the light transmitting member 14 from entering the camera module 11.

[0076] Specifically, in one embodiment, the light blocking member 15 includes a light isolating member 151. The light isolating member 151 may be a rectangular ring, a circular ring, an elliptical ring, or a ring of other shapes. The light isolating member 151 is disposed between the light transmissive member 14 and the camera module 11. The light isolating member 151 may be sandwiched between the light transmissive member 14 and the camera module 11. The light isolating member 151 may be connected to the light transmissive member 14. The light isolating member 151 may be connected to the camera module 11. The light isolating member 151 may be connected to both the light transmissive member 14 and the camera module 11. The connection method may be a detachable connection or a non-detachable connection.

[0077] The light-isolating member 151 blocks at least part of the light emitted by the light-emitting module 13 and reflected by the light-transmitting member 14 from entering the camera module 11, thereby preventing this part of the stray light from being received by the camera module 11 as imaging light and participating in imaging, thereby ensuring that there are no ghost images in the images captured by the camera module 11, thereby improving the imaging quality of the camera module 11.

[0078] See also Figure 3 In some embodiments, the camera module 11 is at least partially located in the light isolation member 15 , the hardness of the light isolation member 151 is less than the hardness of the light transparent member 14 , and the camera module 11 is at least partially located in the light isolation member 151 .

[0079] Specifically, the light barrier 151 can be made of a material with a certain degree of hardness, such as plastic or metal. The high hardness of the light-transmitting member 14 is less susceptible to wear and scratching, ensuring good light transmission performance and preventing rough surfaces on the light-transmitting member 14 that would cause some light to scatter and refract, resulting in optical distortion and image distortion. This ensures that light emitted by the light-emitting module 13 and light reflected from the oral cavity are not significantly lost when passing through the light-transmitting member 14.

[0080] The light-transmitting member 14 with a higher hardness is not easy to break, and the light-transmitting member 14 can always protect the components in the housing 12, such as the camera module 11 and the light-emitting module 13, from being affected by dust, moisture or other impurities. The light-transmitting member 14 with a higher hardness is also not easy to wear and produce scratches on the surface, thereby ensuring good light transmission performance. The camera module 11 is at least partially located in the light-isolating member 151, which can reduce or even prevent the probability of stray light bypassing the light-isolating member 151 and entering the imaging range of the camera module 11, further ensuring that there are no ghost images in the images captured by the camera module 11, and improving the imaging quality of the camera module 11.

[0081] Please continue reading Figure 3 In some embodiments, the light isolating member 151 is a deformable light isolating member 151, and the light transmissive member 14 includes a lens. That is, the light isolating member 151 can be made of a deformable material with a certain elasticity, such as silicone, polyurethane, rubber, etc. The light transmissive member 14 is a lens, which can ensure that the light transmissive member 14 has a high hardness while also ensuring the light transmittance of the light transmissive member 14. In addition, the deformable light isolating member 151 is easy to install and can easily form a tight fit with the camera module 11, thereby preventing stray light reflected by the light transmissive member 14 from entering the imaging range of the camera module 11 through the gap between the light isolating member 151 and the camera module 11, thereby improving the effect of isolating stray light and ensuring the imaging quality of the camera module 11. In addition, the deformable light isolating member 151 can provide a certain buffer and appropriate support force for the light transmissive member 14 to prevent the light transmissive member 14 from being crushed.

[0082] See also Figure 4 and Figure 5 In some embodiments, the light isolation member 151 includes an inner wall 1511 and an outer wall 1533. The inner wall 1511 is closer to the optical axis X of the camera module 11 than the outer wall 1533. The intersection A of the line M between the center of the light source 131 of the light-emitting module 13 and the outer wall 1533 of the light isolation member 151 and the optical axis X of the camera module 11 is located inside the opening component 30.

[0083] Specifically, the intersection A is located inside the opening component 30, ensuring that the illumination ranges of the multiple light sources 131 intersect, so that all areas within the imaging range of the camera module 11 have high brightness, thereby ensuring the imaging quality of the camera module 11.

[0084] See also Figure 4 and Figure 5 In some embodiments, a light shielding layer 153 is provided between the light isolation member 151 and the light transparent member 14 , and the light shielding layer 153 is used to absorb at least part of the light emitted by the light emitting module 13 .

[0085] Specifically, the light-shielding layer 153 can absorb at least part of the light emitted by the light-emitting module 13, preventing part of the light from being reflected from the position of the light-shielding layer 153 into the camera module 11, so as to further enhance the light-isolating effect. Therefore, the light-shielding layer 153 can also be an embodiment of the light-blocking member 15. The light-shielding layer 153 is arranged between the light-shielding member 151 and the light-transmitting member 14. The light-shielding layer 153 can be a single layer or multiple layers. In the embodiment in which the light-shielding layer 153 is multi-layered, the structures of different layers can have different characteristics to absorb light of different wavelengths.

[0086] In some embodiments, the light shielding layer 153 and the light-transmitting member 14 are an integral structure, that is, the light shielding layer 153 is disposed on the side of the light-transmitting member 14 close to the light-isolating member 151. Therefore, the light shielding layer 153 and the light-transmitting member 14 are an integral structure, thereby improving the bonding strength between the light shielding layer 153 and the light-transmitting member 14, and preventing the light shielding layer 153 and the light-transmitting member 14 from separating during operation of the oral scanning device 100. In other embodiments, the light shielding layer 153 and the light-isolating member 151 are an integral structure, that is, the light shielding layer 153 is disposed on the side of the light-isolating member 151 close to the light-transmitting member 14. Therefore, the light shielding layer 153 and the light-isolating member 151 are an integral structure, thereby improving the bonding strength between the light shielding layer 153 and the light-isolating member 151, and preventing the light shielding layer 153 and the light-isolating member 151 from separating during operation of the oral scanning device 100. In some other embodiments, the shading layer 153, the light-transmitting member 14 and the light-isolating member 151 are three different structures, and the shading layer 153 is sandwiched between the light-transmitting member 14 and the light-isolating member 151, thereby facilitating the maintenance and replacement of the shading layer 153.

[0087] The light shielding layer 153 can absorb at least a portion of the light emitted by the light emitting module 13 to prevent the light from being reflected by the light-transmitting element 14 and forming stray light that affects the imaging quality of the camera module 11 .

[0088] Please continue reading Figure 4 and Figure 5 In some embodiments, in the circumferential direction R of the camera module 11 , the width of the light shielding layer 153 is greater than the width of the light isolation member 151 .

[0089] Specifically, the width of the shading layer 153 is greater than the width of the light-isolating member 151, which can ensure that the shading layer 153 is formed around the light-isolating member 151, so that at least part of the light emitted by the light-emitting module 13 to the light-isolating member 151 can be absorbed by the shading layer 153, thereby reducing the stray light reflected by the transparent member 14 and affecting the imaging quality of the camera module 11.

[0090] Please continue reading Figure 4 and Figure 5In some embodiments, the light shielding layer 153 includes an inner ring 1531 and an outer ring 1533. In the circumferential direction R of the camera module 11, the inner ring 1531 and the outer ring 1533 are located on either side of the light shielding member 151. The outer ring 1533 is further away from the optical axis X of the camera module 11 than the inner ring 1531. The outer ring 1533 of the light shielding layer 153 is at least partially located within the light emitting range of the light emitting module 13.

[0091] Specifically, the light shielding layer 153 can be a rectangular ring, a circular ring, an elliptical ring, or a ring of other shapes, and is not limited in this application. In an embodiment of the present application, the light shielding layer 153 includes an inner ring 1531 and an outer ring 1533. The outer ring 1533 is at least partially located within the light emitting range of the light emitting module 13, which can prevent light from being reflected from the position between the outer ring 1533 and the light isolation member 151 into the imaging range of the camera module 11 and affecting the imaging effect. That is, the outer ring 1533 is at least partially located within the light emitting range of the light emitting module 13. At least part of the light emitted by the light emitting module 13 to the outside of the light isolation member 151 can be absorbed by the outer ring 1533 of the light shielding layer 153, thereby reducing the stray light reflected by the light-transmitting member 14 and affecting the imaging quality of the camera module 11.

[0092] Please continue reading Figure 4 and Figure 5 In some embodiments, the inner circle 1531 of the light shielding layer 153 is at least partially located outside the imaging range of the camera module 11.

[0093] Specifically, the inner circle 1531 of the light-shielding layer 153 is at least partially located outside the imaging range of the camera module 11. On the one hand, it can ensure the effect of the light-shielding layer 153 in isolating stray light. On the other hand, it can prevent part of the light-shielding layer 153 from blocking the imaging light reflected from the inside of the oral cavity back to the camera module 11, thereby avoiding affecting the normal imaging of the camera module 11.

[0094] See also Figure 4 In some embodiments, the light blocking member 15 further includes an abutment portion 337. The abutment portion 337 is provided on the inner wall 301 of the opening component 30, and extends from the inner wall 301 of the opening component 30 toward the direction close to the axis of the opening component 30 (which is consistent with the optical axis X in this application).

[0095] The abutment portion 337 is formed by the inner wall 301 of the opening assembly 30 protruding toward the axis of the opening assembly 30, so as to abut against the side of the light-transmitting member 14 away from the camera module 11. Thus, the abutment portion 337 can cooperate with the housing 12 abutting against the side of the light-transmitting member 14 near the camera module 11 to clamp and secure the light-transmitting member 14 in the direction of the optical axis, thereby preventing the light-transmitting member 14 from falling off. The abutment portion 337 can block some of the light emitted by the light-emitting module 13 from being emitted by the inner wall 301 of the opening assembly 30, resulting in one or more reflections, and then entering the camera module 11. This prevents this stray light from being received by the camera module 11 as imaging light and participating in imaging. This ensures that there are no ghost images in the images captured by the camera module 11, thereby improving the imaging quality of the camera module 11.

[0096] See also Figure 4 and Figure 5 In some embodiments, a first angle α1 between a line P from the center of the light source 131 of the light-emitting module 13 to the inner edge of the abutment portion 337 and the optical axis X of the camera module 11 is greater than a second angle α2 between a line Q from the center of the light source 131 to the inner edge of the end of the opening component 30 away from the camera module 11 and the optical axis X of the camera module 11.

[0097] Specifically, the first angle α1 can be used to limit the outermost edge of the illumination range of the light-emitting module 13, and the second angle α2 can be used to limit the outermost edge of the imaging range of the camera module 11. The first angle α1 is greater than the second angle α2, that is, the illumination range of the light-emitting module 13 covers the imaging range of the camera module 11, and all areas within the imaging range of the camera module 11 have high brightness, thereby ensuring the imaging quality of the camera module 11.

[0098] See also Figure 3 and Figure 4 In some embodiments, the opening assembly 30 includes a support member 33 and a deformable member 35, at least a portion of the deformable member 35 is mounted on one end of the support member 33, the other end of the support member 33 is connected to the host 10, and the abutment portion 337 is provided on the support member 33, and the abutment portion 337 extends from the inner wall 301 of the support member 33 toward the direction close to the axis of the opening assembly 30, and the abutment portion 337 abuts against the side of the light-transmitting member 14 away from the camera module 11.

[0099] Specifically, the support member 33 is used to maintain the shape of the opening component 30 to prevent the opening component 30 from blocking the imaging path of the camera module 11 and affecting the imaging range of the camera module 11 when the opening component 30 is deformed. The deformable member 35 is a soft rubber. For example, the deformable member 35 can be made of materials such as rubber, silicone, plastic or synthetic fiber. Among them, the rubber material includes but is not limited to natural rubber, nitrile rubber, fluororubber, polyurethane rubber, EPDM rubber or silicone rubber. The support member 33 is made of hard plastic or metal. The support member 33 is arranged at one end close to the host 10, which can ensure that the support member 33 is stably connected to the host 10 and is not easy to scratch the oral cavity when entering or taking it out of the mouth, causing it to fall off. At least a part of the deformable member 35 is arranged at the end of the support member 33 away from the host 10, which can ensure that the deformable member 35 is relatively soft in contact with the oral cavity and is not easy to poke or scratch the user.

[0100] The support member 33 is located at the end closest to the main unit 10, ensuring a stable connection between the support member 33 and the main unit 10, preventing it from scratching the mouth and causing it to fall out. At least a portion of the deformable member 35 is located at the end of the support member 33 away from the main unit 10, ensuring a soft contact with the mouth and preventing it from poking or scratching the user. The abutment portion 337 abuts the side of the light-transmitting member 14 away from the camera module 11, clamping and securing the light-transmitting member 14 along the optical axis to prevent it from falling out.

[0101] See also Figure 3 and Figure 4 In some embodiments, the light emitting module 13 includes a plurality of light sources 131 , which surround the periphery of the camera module 11 and are spaced apart from the light transmissive member 14 . The light isolating member 151 is annular and is disposed on the end surface of the camera module 11 near the light transmissive member 14 .

[0102] Specifically, the light emitting module 13 includes a plurality of light sources 131, and the light source 131 can be one or more of an LED or a laser diode. When the light emitting module 13 includes one light source 131, the cross-sectional shape of the one light source 131 can be a circular ring, an elliptical ring, a triangular ring, a quadrilateral ring or other polygonal ring, etc. When the light emitting module 13 includes multiple light sources 131, the multiple light sources 131 can be arranged in a ring, an arc or a matrix to achieve a specific lighting effect and coverage area. In an embodiment of the present application, the multiple light sources 131 surround the periphery of the camera module 11, and can form uniform light, ensuring that the camera module 11 can have uniform light in the circumferential direction, further avoiding the problem of local darkness in all areas within the imaging range of the camera module 11, thereby ensuring the imaging quality of the camera module 11. The light isolation member 151 is annular, corresponding to the arrangement of the light source 131, thereby ensuring the effect of the light isolation member 151 in isolating stray light and ensuring the imaging quality of the camera module 11.

[0103] Please continue reading Figure 4 and Figure 5 In some embodiments, in the optical axis direction of the camera module 11, the thickness of the light-transmitting member 14 is less than or equal to 4 mm.

[0104] Specifically, the thickness of the light-transmitting member 14 can be 0.5 mm, 1.2 mm, 1.5 mm, 2.2 mm, 2.5 mm, 3.2 mm, 3.5 mm, 3.7 mm, 3.9 mm, or 4 mm, etc. If the thickness of the light-transmitting member 14 is greater than 4 mm, the weight and cost of the light-transmitting member 14 will increase accordingly. In addition, an overly thick light-transmitting member 14 will cause the path of the light emitted by the light-emitting module 13 to pass through the light-transmitting member 14 to become longer, making the light easily absorbed and scattered by the material of the light-transmitting member 14 itself. A thickness of the light-transmitting member 14 of 4 mm or less not only keeps the weight and cost of the light-transmitting member 14 within a reasonable range, but also shortens the path of the light emitted by the light-emitting module 13 to pass through the light-transmitting member 14, reduces the light reflected from the side of the light-transmitting member 14 away from the light-emitting module 13 and enters the camera module 11, reduces interference, and ensures the imaging quality of the camera module 11.

[0105] See also Figure 4 and Figure 5 In some embodiments, in the optical axis direction of the camera module 11 , a first distance L1 between the camera module 11 and the light-transmitting member 14 is smaller than a second distance L2 between the light-emitting module 13 and the light-transmitting member 14 .

[0106] Specifically, L1 is smaller than L2, that is, L1 can be 2 / 3L2, 3 / 4L2, 4 / 5L2, 5 / 6L2, 6 / 7L2, 8 / 9L2, 10 / 11L2, 11 / 12L2 or 12 / 13L2. If L1 is greater than or equal to L2. The light-emitting module 13 is closer to the light-transmitting component 14 in the optical axis direction of the camera module 11. After the light-transmitting component 14 and the light-emitting module 13 are assembled, the light-transmitting component 14 will squeeze the light-emitting module 13, causing damage to the light-transmitting component 14 and / or the light-emitting module 13. In the embodiment of the present application, L1 is smaller than L2, that is, the height of the camera module 11 is greater than the height of the light-emitting module 13, ensuring that the light-transmitting component 14 will not squeeze the light-emitting module 13 during assembly, and also allowing the light-transmitting component 14 to be carried on the light-isolating component 151 between the camera module 11 and the light-transmitting component 14, thereby facilitating the fixed installation of the light-transmitting component 14.

[0107] See also Figure 3 In some embodiments, the multiple light sources 131 are used to emit light of different wavelength bands, and the multiple light sources 131 emit light alternately.

[0108] Specifically, light of different wavelengths can collect different image information. After multiple light sources 131 emit light of different wavelengths, the light passes through the light-transmitting member 14 and is reflected by the inner part of the oral cavity. The light of different wavelengths can carry different information back to the camera module 11. Thus, the camera module 11 can obtain richer image information under the supplementary light effect of different light sources 131. For example, light of the visible light band can carry information about the arrangement of teeth in the oral cavity and provide illumination for the inner part of the oral cavity, and light of the ultraviolet light band can carry information about dental plaque on the surface of the teeth. The alternating emission of light by multiple light sources 131 can also enable the oral scanning device 100 to provide different scanning modes, expanding the application scenarios of the oral scanning device 100.

[0109] See also Figure 3 In some embodiments, the plurality of light sources 131 includes a first light source 1311 and a second light source 1312. The first light source 1311 is configured to emit light of a first wavelength band, and the second light source 1312 is configured to emit light of a second wavelength band. The first wavelength band is different from the second wavelength band.

[0110] Specifically, the first light source 1311 emits light of the first band, and the second light source 1312 emits light of the second band. The light of the first band and the light of the second band pass through the light-transmitting member 14, and after being reflected inside the oral cavity, they can carry different information back to the camera module 11, thereby enabling the camera module 11 to obtain richer image information.

[0111] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0112] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An oral scanning device, characterized in that: include: The host comprises a housing, a light-emitting module, a camera module, and a light-transmitting member. The light-emitting module is disposed in the housing and is used to emit light out of the housing. The camera module is disposed in the housing and is used to receive light reflected back from the interior of the oral cavity. The light-transmitting member is disposed in the housing and is opposite to both the light-emitting module and the camera module, and is used to transmit the light. an opening assembly connected to the host and surrounding the camera module, the opening assembly having a first opening and a second opening extending through opposite ends thereof, the camera module corresponding to the second opening, and one end of the first opening being configured to abut against any part of the oral cavity; and A light blocking member is provided on a light-emitting path of the light-emitting module and is used to block at least a portion of the light emitted by the light-emitting module and to allow the light emitted from the first opening to completely cover the first opening.

2. The oral scanning device according to claim 1, characterized in that: The light emitting module includes a light source, and the light emitted by the light source at least covers the first opening; or, The light emitting module includes a plurality of light sources, and the union range of the light emitted by the plurality of light sources at least covers the first opening; or, The light emitting module includes a plurality of light sources, and the light emitted by any one of the plurality of light sources at least covers the first opening; or, The light emitting module includes a plurality of light sources, and the plurality of light sources are used to emit light of different wavelength bands. The union range formed by the light sources emitting light of the same wavelength band at least covers the first opening.

3. The oral cavity scanning device according to claim 1, characterized in that: The light blocking member includes a light isolating member, which is arranged between the light transmitting member and the camera module in the optical axis direction of the camera module and is used to block at least part of the light emitted by the light emitting module and reflected by the light transmitting member from entering the camera module.

4. The oral cavity scanning device according to claim 3, characterized in that: The camera module is at least partially located in the light isolation member, and the hardness of the light isolation member is less than the hardness of the light-transmitting member; and / or, The light-transmitting element includes a lens, and the light-isolating element is a deformable light-isolating element.

5. The oral cavity scanning device according to claim 3, characterized in that: The light-isolating member includes an inner wall and an outer wall, the inner wall is closer to the optical axis of the camera module than the outer wall, and the intersection of the line connecting the center of the light source of the light-emitting module and the outer wall of the light-isolating member and the optical axis of the camera module is located inside the opening component.

6. The oral cavity scanning device according to claim 3, characterized in that: In the direction of the optical axis, a light shielding layer is provided between the light isolation member and the light transparent member, and the light shielding layer is used to absorb at least part of the light emitted by the light emitting module.

7. The oral cavity scanning device according to claim 6, characterized in that: In the circumferential direction of the camera module, the width of the light shielding layer is greater than the width of the light isolation member.

8. The oral cavity scanning device according to claim 6, characterized in that: The light-shielding layer includes an inner ring and an outer ring. In the circumferential direction of the camera module, the inner ring and the outer ring are respectively located on both sides of the light-isolating member. The outer ring is farther away from the optical axis of the camera module than the inner ring. The outer ring of the light-shielding layer is at least partially located within the luminous range of the light-emitting module.

9. The oral cavity scanning device according to claim 6, characterized in that: The light-shielding layer includes an inner ring and an outer ring. In the circumferential direction of the camera module, the inner ring and the outer ring are respectively located on both sides of the light-isolating member. The outer ring is farther away from the optical axis of the camera module than the inner ring. The inner ring of the light-shielding layer is at least partially located outside the imaging range of the camera module.

10. The oral cavity scanning device according to claim 3, characterized in that: The light blocking member further comprises: The abutment portion is provided on the inner wall of the opening component and extends from the inner wall of the opening component toward the direction close to the axis of the opening component.

11. The oral cavity scanning device according to claim 10, characterized in that: The first angle between the line from the center of the light source of the light-emitting module to the inner edge of the abutment portion and the optical axis of the camera module is greater than the second angle between the line from the center of the light source to the inner edge of the end of the opening component away from the camera module and the optical axis of the camera module.

12. The oral cavity scanning device according to claim 10, characterized in that: The opening assembly includes a support member and a deformable member, the deformable member is at least sleeved on one end of the support member, and the other end of the support member is connected to the host; the abutment portion is provided on the support member, and the abutment portion extends from the inner wall of the support member toward the direction close to the axis of the opening assembly, and the abutment portion abuts against the side of the light-transmitting member away from the camera module.

13. The oral scanning device according to claim 3, characterized in that: The light emitting module includes a plurality of light sources, which surround the periphery of the camera module and are spaced apart from the light-transmitting member. The light-isolating member is annular and is arranged on the end face of the camera module close to the light-transmitting member.

14. The oral cavity scanning device according to claim 1, characterized in that: In the optical axis direction of the camera module, the thickness of the light-transmitting member is less than 4 mm.

15. The oral cavity scanning device according to claim 1, characterized in that: In the optical axis direction of the camera module, a first distance L2 between the camera module and the light-transmitting member is smaller than a second distance L2 between the light-emitting module and the light-transmitting member.

16. The oral cavity scanning device according to claim 1, characterized in that: The light emitting module includes a plurality of light sources, wherein the plurality of light sources are used to emit light of different wavelength bands, and the plurality of light sources emit light alternately.

17. The oral cavity scanning device according to claim 16, characterized in that: The multiple light sources include a first light source and a second light source, wherein the first light source is configured to emit light of a first wavelength band, and the second light source is configured to emit light of a second wavelength band, wherein the first wavelength band is different from the second wavelength band.

Images