Three-dimensional scanning device
By designing a 3D scanning device with adjustable aperture and zoom lens components, the high cost problem caused by independent intraoral and facial scanner systems was solved, achieving efficient scanning applicable to multiple scenarios, reducing equipment costs and improving scanning quality.
Patent Information
- Application Number
- CN202411021981.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2026-02-03
AI Technical Summary
In existing technologies, intraoral scanners and facial scanners are usually separate systems, resulting in high procurement and maintenance costs, and making it difficult to reuse them efficiently in different scanning scenarios.
Design a 3D scanning device comprising a scanning module and first and second mode components. Through an adjustable aperture and zoom lens component, different scanning modes can be switched to adapt to intraoral and facial scanning needs.
By using a single scanning module, multiple scenarios can be applied, reducing equipment costs and improving scanning quality and reliability, thus adapting to the scanning needs of different application scenarios.
Smart Images
Figure CN121445296A_ABST
Abstract
Description
Technical Field
[0001] This application relates to a three-dimensional scanning device. Background Technology
[0002] To acquire intraoral and facial data from patients, separate intraoral and facial scanners are typically used depending on the scanning scenario, leading to high procurement and maintenance costs. Some products combine intraoral and facial scanners, but they are still essentially two independent operating systems. Summary of the Invention
[0003] This application provides a three-dimensional scanning device, comprising:
[0004] A scanning module includes at least one transmitter, at least one receiver, and a circuit unit. The transmitter emits scanning light, the receiver receives reflected light from an object under test, and the circuit unit is electrically connected to the transmitter and the receiver to construct three-dimensional point cloud data of the object under test based on the reflected light received by the receiver.
[0005] A first mode component and a second mode component, both of which can be movably connected to the scanning module; when the first mode component is connected to the scanning module, the three-dimensional scanning device is used for scanning in the first mode; when the second mode component is connected to the scanning module, the three-dimensional scanning device is used for scanning in the second mode; the scanning working distance and / or scanning working area of the first mode and the second mode are different.
[0006] The receiving end includes a first aperture, the aperture of which is adjustable.
[0007] The 3D scanning device provided in this application embodiment, by setting a scanning module and respectively attaching a first mode component and a second mode component to the scanning module, can achieve different application scenarios. A single scanning module can be used in different scenarios, which improves the reusability of the device and reduces costs. By setting the aperture of the first aperture to be adjustable, the scanning component can be further assisted in handling the required light transmission in different application scenarios, improving the scanning quality when a single scanning module is applied to different scenarios.
[0008] In one embodiment, the first mode component includes a first connecting housing and a first reflective element, wherein the first reflector is embedded in the first housing, and the first housing is used to connect to the scanning module.
[0009] In one embodiment, the first reflective element includes either a mirror or a prism.
[0010] In one embodiment, the second mode component includes a first zoom lens group and a second zoom lens group; when the second mode component is connected to the scanning module, the first zoom lens group is located on the optical path on the light-emitting side of the transmitter, and the second zoom lens group is located on the optical path on the light-receiving side of the receiver.
[0011] In one embodiment, the second mode component further includes an image-rotating mirror group disposed between the second zoom lens group and the receiver. The image-rotating mirror group includes at least one second reflective element to change the angle between the reflected light received by the receiver and the scanning light emitted by the transmitter.
[0012] In one embodiment, the second mode component further includes a first focusing element and a second focusing element. The first focusing element is connected to the first zoom lens group and is used to adjust the distance between the first zoom lens group and the transmitting end. The second focusing element is connected to the second zoom lens group and is used to adjust the distance between the second zoom lens group and the receiving end.
[0013] In one embodiment, the transmitting end includes a light source, a dimming element, and a first lens group arranged sequentially. The light source is used to emit light, the dimming element is used to modulate the light source into the scanning light, and the first lens group is used to project the scanning light.
[0014] In one embodiment, the transmitting end further includes a second aperture, which is disposed in the optical path of the first lens group, and the aperture of the second aperture is adjustable.
[0015] In one embodiment, the receiving end includes a second lens group and a sensor arranged sequentially along the optical path direction. The second lens group is used to receive the reflected light reflected from the object under test and guide the reflected light to the sensor. The first aperture is disposed in the optical path of the second lens group. The sensor is used to convert the reflected light into an image signal.
[0016] In one embodiment, the three-dimensional scanning device further includes a connection component, which is connected to the scanning module, the first mode component, and the second mode component respectively. The connection component is used to connect the first mode component and the second mode component to the scanning module and to communicate optical paths with the transmitter and the receiver respectively. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the three-dimensional scanning device in the embodiments of this application.
[0018] Figure 2 This is a schematic diagram of the structure of the scanning module combined with the first mode component in an embodiment of this application.
[0019] Figure 3 This is a schematic diagram of the structure of the scanning module and the second mode component combined in an embodiment of this application.
[0020] Figure 4 This is a schematic diagram of the optical path structure of the scanning module in one embodiment of this application.
[0021] Figure 5 This is a schematic diagram of the optical path structure combining the scanning module and the first mode component in one embodiment of this application.
[0022] Figure 6 This is a schematic diagram of the optical path structure combining the scanning module and the second mode component in one embodiment of this application.
[0023] Figure 7 This is a schematic diagram of the optical path structure combining the scanning module and the second mode component in another embodiment of this application.
[0024] Figure 8 This is a schematic diagram of the scanning module in Embodiment 1 of this application.
[0025] Figure 9 for Figure 8 A schematic diagram of the resolving power curve of the first lens group.
[0026] Figure 10 for Figure 8 Field curve diagram of the first lens group.
[0027] Figure 11 for Figure 8 Distortion diagram of the first lens group.
[0028] Figure 12 for Figure 8 A schematic diagram of the resolving power curve of the second lens group.
[0029] Figure 13 for Figure 8 Field curve diagram of the second lens group.
[0030] Figure 14 for Figure 8 Distortion diagram of the second lens group in the middle.
[0031] Figure 15 This is a schematic diagram of the structure of the scanning module and the second mode component combined in Embodiment 1 of this application.
[0032] Figure 16 for Figure 15 A schematic diagram of the resolving power curve of the combination of the first lens group and the second mode component.
[0033] Figure 17 for Figure 15Field curve diagram of the combination of the first lens group and the second mode component.
[0034] Figure 18 for Figure 15 The distortion diagram of the combination of the first lens group and the second mode component.
[0035] Figure 19 for Figure 15 A schematic diagram of the resolving power curve of the combination of the second lens group and the second mode component.
[0036] Figure 20 for Figure 15 Field curve diagram of the combination of the second lens group and the second mode component.
[0037] Figure 21 for Figure 15 Distortion diagram of the combination of the second lens group and the second mode component.
[0038] Figure 22 This is a schematic diagram of the structure of a three-dimensional scanning device in another embodiment of this application.
[0039] Explanation of main component symbols
[0040] 3D scanning device 100
[0041] Scanning Module 10
[0042] Transmitter 11
[0043] Light source 111
[0044] Dimming element 113
[0045] First lens group 115
[0046] Second aperture 117
[0047] Receiver 13
[0048] Sensor 131
[0049] Second lens group 133
[0050] First aperture 135
[0051] Circuit Unit 15
[0052] Main unit casing 17
[0053] First Mode Component 30
[0054] First reflective element 31
[0055] First shell 33
[0056] Through hole 332
[0057] Second Mode Component 50
[0058] First zoom lens group 51
[0059] First focusing element 52
[0060] Second zoom lens group 53
[0061] Second focusing element 54
[0062] Image-transferring lens group 55
[0063] Second reflective element 551
[0064] Second shell 57
[0065] Connection component 70
[0066] Optical surfaces S101, S102, S103, S104, S105
[0067] S106, S107, S108, S109, S110,
[0068] S111, S112, S113, S201, S202,
[0069] S203, S204, S205, S206, S207,
[0070] S208, S209, S210
[0071] Scanning light L
[0072] Reflected light R
[0073] Test object P
[0074] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation
[0075] The technical solutions in the 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.
[0076] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application's specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0077] To further illustrate the technical means and effects adopted by this application in achieving its intended purpose, the following detailed description of this application is provided in conjunction with the accompanying drawings and preferred embodiments.
[0078] Please see Figure 1 The three-dimensional scanning device 100 provided in this application embodiment includes a scanning module 10, a first mode component 30, and a second mode component 50. The scanning module 10 emits scanning light and receives reflected light from the object being measured, and constructs three-dimensional point cloud data of the object based on the reflected light. The first mode component 30 and the second mode component 50 are detachably connected to the scanning module 10. When the first mode component 30 is connected to the scanning module 10, the three-dimensional scanning device 100 performs scanning in a first mode; when the second mode component 50 is connected to the scanning module 10, the three-dimensional scanning device 100 performs scanning in a second mode.
[0079] The scanning working distance and / or scanning working area of the first mode and the second mode are different.
[0080] Specifically, the scanning module 10, the first mode component 30, and the second mode component 50 are three independent components. The first mode component 30 and the second mode component 50 are movably connected to the scanning module 10. The first mode component 30 and the second mode component 50 are used to modulate the optical paths of the scanning light and the reflected light, respectively. The scanning module 10 includes a main housing 17, the first mode component 30 includes a first housing 33, and the second mode component 50 includes a second housing 57.
[0081] Active connections include detachable connections, rotating connections, sliding connections, and other types.
[0082] Please see Figure 2 When the first mode component 30 is connected to the scanning module 10, the first housing 33 is connected to the main housing 17. The first housing 33 and the main housing 17 can be detachably connected or rotated by means of snap-fit, magnetic attraction or screw connection, and this application does not limit this. The end of the first housing 33 away from the scanning module 10 has a through hole 332. The scanning light emitted from the scanning module 10 can be emitted through the through hole 332 to illuminate the user's teeth. The reflected light reflected from the teeth enters the first mode component 30 through the through hole 332 and is transmitted to the scanning module 10.
[0083] In this implementation, the first mode is the oral scanning mode, which scans the user's teeth. The working distance and working area are relatively small. The first mode component 30 is the dental probe component for oral scanning.
[0084] Please see Figure 3When the second mode component 50 is connected to the scanning module 10, the second housing 57 is connected to the main housing 17. The second housing 57 and the main housing 17 can be detachably connected or rotated by means of snap-fit, magnetic attraction or screw connection. This application does not limit this.
[0085] In this implementation, the second mode is the face scanning mode, which scans the user's face. The working distance and working area are relatively large. The second mode component 50 is a component used for face scanning. In this implementation, it is a zoom lens component.
[0086] Please see Figure 4 In this embodiment, the scanning module 10 includes a transmitter 11, a receiver 13, and a circuit unit 15. The transmitter 11 emits scanning light L, and the receiver 13 receives reflected light R from the object P under test. The circuit unit 15 is electrically connected to the transmitter 11 and the receiver 13 and is used to construct three-dimensional point cloud data of the object P under test based on the reflected light R received by the receiver 13. In other embodiments, the scanning module 10 may also include multiple transmitters 11 and / or multiple receivers 13, such as one transmitter 11 paired with two receivers 13, two transmitters 11 paired with one receiver 13, or two transmitters 11 paired with two receivers 13, etc. This application does not limit this.
[0087] The transmitter 11 includes a light source 111, a dimming element 113, a first lens group 115, and a second aperture 117. The light source 111 emits light, and the dimming element 113, located on the light-emitting side of the light source 111, modulates the light source light into a structured scanning light L. The first lens group 115 is located on the side of the dimming element 113 away from the light source 111 and receives and projects the emitted scanning light L. The second aperture 117 is located in the optical path of the scanning light L. Specifically, the dimming element 113 can be a mask or other optical element, used to modulate the light emitted from the light source 111 into structured light that can project a specific pattern, such as multiple parallel lines, alternating light and dark stripes, or intersecting grid patterns, etc.
[0088] In this embodiment, the first lens group 115 includes two lenses. In other embodiments, the first lens group 115 may include only one lens or three or more lenses, and this application does not impose any limitations on this. The second aperture 117 is an adjustable aperture, that is, the aperture of the second aperture 117 is adjustable. The second aperture 117 is positioned on the aperture stop in the optical path of the scanning light L, for example, between the two lenses. By adjusting the aperture of the second aperture 117, the amount of light passing through the second aperture 117 can be adjusted, thereby enabling the emitting end 11 to project scanning light L of different brightness to adapt to different usage scenarios.
[0089] In other embodiments, the transmitter 11 may not be provided with a second aperture 117, that is, the brightness of the scanning light L emitted by the transmitter 11 is constant, and this application does not limit this.
[0090] The receiver 13 includes a sensor 131, a second lens group 133, and a first aperture 135. The second lens group 133 receives the reflected light R and guides it to the sensor 131. The sensor 131 converts the reflected light R from an optical signal into an image signal and transmits it to the circuit unit 15. The first aperture 135 is disposed in the optical path of the reflected light R, and its aperture is adjustable.
[0091] Specifically, in this embodiment, the second lens group 133 includes two lenses. In other embodiments, the second lens group 133 may include only one lens or three or more lenses, and this application does not limit this. The first aperture 135 is an adjustable aperture, that is, the light transmission aperture of the first aperture 135 is adjustable. The first aperture 135 is positioned on the aperture stop in the optical path of the reflected light R, for example, between the two lenses of the second lens group 133. By adjusting the aperture of the first aperture 135, the amount of light transmitted through the reflected light R passing through the first aperture 135 can be adjusted, thereby enabling the sensor 131 to receive reflected light R of different brightness, thus adapting to different usage scenarios. Specifically, when the scanning module 10 is used in conjunction with the first mode component 30 to scan the user's teeth, since the scanning area of the teeth is small and the light is more concentrated, the light transmission aperture of the first aperture 135 can be reduced (for example, adjusted to f / 16), thereby reducing the brightness of the reflected light R received by the sensor 131. When the scanning module 10 is used in conjunction with the second mode component 50 to scan a user's face, since the scanning area of the face is larger and the light is relatively dispersed, it is necessary to increase the aperture of the first aperture 135 (e.g., adjust it to f / 8) to increase the brightness of the reflected light R received by the sensor 131.
[0092] In other embodiments, besides directly setting the first aperture 135 as an adjustable aperture, the first aperture 135 can also be configured as including multiple aperture plates with different light transmission apertures. The adjustment of the light transmission aperture of the first aperture 135 can be achieved by directly replacing different aperture plates. This application does not limit the specific structure of the first aperture 135; as long as it can be adjusted to different light transmission apertures according to the actual use scenario, it is within the scope of this application.
[0093] The circuit unit 15 is used to control the transmitter 11 to emit scanning light L, and to calculate and construct the three-dimensional point cloud data of the object P under test based on the image signal transmitted by the receiver 13. The circuit unit 15 can be a central processing unit or an integrated circuit including multiple chips with different functions; this application does not limit this.
[0094] Please see Figure 5 The first mode component 30 also includes a first reflective element 31, which is embedded within the first housing 33. In this embodiment, the first reflective element 31 is a mirror; in other embodiments, it may be a prism or other reflective element. The first reflective element 31 reflects the scanning light L onto the object P to be tested, and reflects the reflected light R formed by the object P to be received by the receiving end 13. By setting the first reflective element 31, the optical paths of the scanning light L and the reflected light R can be adjusted, thereby adjusting the scanning direction of the scanning module 10, so that the scanning module 10 can be used to scan the user's teeth.
[0095] Please see Figure 6 The second mode component 50 includes a first zoom lens group 51 and a second zoom lens group 53. When the second mode component 50 is connected to the scanning module 10, the first zoom lens group 51 is disposed on the optical path of the light-emitting side of the transmitter 11 to modulate the scanning light L emitted from the transmitter 11. The second zoom lens group 53 is disposed on the optical path of the light-receiving side of the receiver 13 to modulate the reflected light R. Specifically, since the actual working distance and working area of the scanning module 10 are different when scanning the user's teeth and face, the scanning light L needs to be adjusted in different application scenarios to achieve different working distances and working areas. By setting the first zoom lens group 51, the scanning light L can be focused, so that the scanning light L can cover a larger area, thereby realizing the scanning of the face. Meanwhile, since the range of light that the receiver 13 can receive is fixed, a second zoom lens group 53 is also required to zoom the reflected light R, so that the receiver 13 can acquire the reflected light R reflected within the range illuminated by the scanning light L, and then construct the three-dimensional point cloud data of the object P under test based on the reflected light R.
[0096] The second mode component 50 also includes a first focusing element 52 and a second focusing element 54. The first focusing element 52 is connected to the first zoom lens group 51 and is used to adjust the distance between the first zoom lens group 51 and the transmitter 11. The second focusing element 54 is connected to the second zoom lens group 53 and is used to adjust the distance between the second zoom lens group 53 and the receiver 13. Specifically, both the first focusing element 52 and the second focusing element 54 can be focusing rings or other focusing structures. By setting the first focusing element 52 and the second focusing element 54 for focusing, further modulation of the scanning light L and the reflected light R can be achieved, thereby broadening the application scenarios of the scanning module 10.
[0097] Please see Figure 7In another embodiment, the second mode component 50 further includes a rotating mirror group 55, which is disposed between the second zoom lens group 53 and the receiving end 13. The rotating mirror group 55 includes two second reflective elements 551, which are used to adjust the receiving position of the reflected light R to change the angle between the reflected light R received by the receiving end 13 and the scanning light L emitted by the transmitting end 11. That is, by setting the rotating mirror group 55, the working baseline and angle of the scanning module 10 can be changed. The second reflective element 551 can be a mirror, a prism, or other reflective element. In other embodiments, the rotating mirror group 55 may also have only one second reflective element 551 or three or more second reflective elements 551, which is not limited in this application.
[0098] The 3D scanning device 100 provided in this application embodiment, by setting the scanning module 10 to be detachably connected to the first mode component 30 and the second mode component 50, allows scanning of the object P to be measured in different scenes to be achieved through a single scanning module 10, which is beneficial for optimizing the structure of the 3D scanning device. By setting the first aperture 135, the brightness of the reflected light R received by the receiving end 13 can be adjusted, thereby further adapting to different application scenarios and improving the reliability of the 3D scanning device 100.
[0099] The reliability of the three-dimensional scanning device provided in this application will be verified below with reference to specific embodiments.
[0100] Example 1
[0101] Please see Figure 8 The three-dimensional scanning device 200 provided in this embodiment has a scanning module 10 including a transmitter 11 and two receivers 13. The two receivers 13 are respectively disposed on both sides of the transmitter 11. The parameters of each optical surface on the transmitter 11 and the receivers 13 are shown in Table 1.
[0102] Table 1 Optical surface parameters of scanning module 10
[0103]
[0104]
[0105] Combination Figure 8As can be seen from Table 1, in this embodiment, the first lens group 115 includes four lenses, that is, optical surfaces S101 and S102 are two surfaces of one lens, optical surfaces S103 and S104 are two surfaces of one lens, optical surfaces S105 and S106 are two surfaces of one lens, and optical surfaces S108 and S109 are two surfaces of one lens. The second aperture stop 117 is disposed between the third and fourth lenses starting from the dimming element 113. The second lens group 133 includes three lenses, that is, optical surfaces S201 and S202 are two surfaces of one lens, optical surfaces S204 and S205 are two surfaces of one lens, and optical surfaces S206 and S207 are two surfaces of one lens. The first aperture stop 135 is disposed between the first and second lenses starting from the sensor 131.
[0106] In this embodiment, the system working distance of the scanning module 10 is 85mm, the included angle is 8°, the working baseline is 12mm, and the scanning area is 16*12mm. The working distance is theoretically the optimal scanning distance between the scanning module 10 and the object P to be measured; the included angle is the angle between the scanning light L and the reflected light R; the working baseline is the distance between the optical centers of the two receiving ends 13; and the scanning area is the range illuminated by the scanning light L at the working distance.
[0107] Figure 9 The figure shows the modulation transfer function (MTF) curve of the transmitter 11. As can be seen from the figure, the optical transfer function (OTF) modulus of light with different parameters is basically greater than 0.7. This confirms that the scanning light L emitted by the transmitter 11 in this embodiment is relatively stable.
[0108] Figure 10 The image shows the field curvature of the transmitter 11. As can be seen from the image, the field curvature of the transmitter 11 in this embodiment is basically less than 0.03 mm, indicating good optical performance.
[0109] Figure 11 The image shows the distortion of the transmitter 11. As can be seen from the image, the distortion of the transmitter 11 in this embodiment is basically less than 0.3%, indicating good optical performance.
[0110] Figure 12 The figure shows the MTF curve of receiver 13. It can be seen from the figure that the OTF modulus of light with different parameters is basically greater than 0.4. Therefore, it can be confirmed that receiver 13 of this embodiment can transmit the information of reflected light R relatively stably.
[0111] Figure 13The image shows the field curvature of receiver 13. As can be seen from the image, the field curvature of receiver 13 in this embodiment is basically less than 0.15mm, indicating good optical performance.
[0112] Figure 14 The image shows the distortion of receiver 13. As can be seen from the image, the distortion of receiver 13 in this embodiment is basically less than 0.4%, indicating good optical performance.
[0113] Please see Figure 15 In this embodiment, when the scanning module 10 is combined with the second mode component 50, the optical parameters of each optical surface on the optical path of the scanning light L and the optical parameters of each optical surface on the optical path of the reflected light R are shown in Table 2.
[0114] Table 2 Optical surface parameters of the 3D scanning device 200
[0115]
[0116]
[0117] Combination Figure 15 As can be seen from Table 2, in this embodiment, the first zoom lens group 51 includes two lenses, that is, optical surface S110 and optical surface S111 are two surfaces of a lens, and optical surface S112 and optical surface S113 are two surfaces of a lens. The second zoom lens group 53 includes one lens, that is, optical surface S208 and optical surface S209 are two surfaces of a lens.
[0118] In this embodiment, after the scanning module 10 and the second mode component 50 are combined, the overall working distance of the three-dimensional scanning device 200 is 250mm, the included angle is 11.4°, the working baseline is 50mm, and the scanning area is 100*75mm.
[0119] Figure 16 The figure shows the MTF curve of the transmitter 11 combined with the first zoom lens group 51. It can be seen from the figure that the OTF modulus of light with different parameters is basically greater than 0.8. This confirms that the scanning light L emitted after the transmitter 11 is combined with the first zoom lens group 51 in this embodiment is still relatively stable.
[0120] Figure 17 The image shows the field curvature of the transmitter 11 combined with the first zoom lens group 51. As can be seen from the image, the field curvature of the transmitter 11 combined with the first zoom lens group 51 in this embodiment is basically less than 0.02mm, indicating good optical performance.
[0121] Figure 18The image shows the distortion of the transmitter 11 combined with the first zoom lens group 51. As can be seen from the image, the distortion of the transmitter 11 combined with the first zoom lens group 51 in this embodiment is basically less than 0.3%, and the optical performance is good.
[0122] Figure 19 The figure shows the MTF curve of the receiver 13 combined with the second zoom lens group 53. It can be seen from the figure that the OTF modulus of light with different parameters is basically greater than 0.4. This confirms that the receiver 13 and the second zoom lens group 53 in this embodiment can still transmit the information of reflected light R relatively stably.
[0123] Figure 20 The image shows the field curvature of the receiver 13 combined with the second zoom lens group 53. As can be seen from the image, the field curvature of the receiver 13 combined with the second zoom lens group 53 in this embodiment is basically less than 0.02mm, indicating good optical performance.
[0124] Figure 21 The image shows the distorted image of the receiver 13 combined with the second zoom lens group 53. As can be seen from the image, the distortion of the receiver 13 combined with the second zoom lens group 53 in this embodiment is basically less than 1%, and the optical performance is good.
[0125] The 3D scanning device 200 provided in Embodiment 1 of this application, by setting the aforementioned optical parameters, enables the scanning module 10 to effectively measure the user's dental data when combined with the first mode component 30. When the scanning module 10 is combined with the second mode component 50, it maintains good optical parameters while expanding the working distance and scanning range, thus enabling effective measurement of the user's facial data. This allows the 3D scanning device 200 to be applied to different usage scenarios with a single scanning module 10, which is beneficial for optimizing the device structure.
[0126] Please see Figure 22 In another embodiment, the three-dimensional scanning device 100 further includes a connection component 70, which is connected to the scanning module 10, the first mode component 30, and the second mode component 50, respectively. The connection component 70 is capable of connecting the first mode component 30 and the second mode component 50 to the scanning module 10 and communicating optical paths with the transmitter 11 and the receiver 13, respectively.
[0127] Specifically, the connecting component 70 can be fixedly or movably connected to the scanning module 10; the connecting component can be fixedly or movably connected to the first mode component 30 and the second mode component 50; when it is fixedly connected, the housing of the two parts or the two parts of the fixed connection can be an integrally formed structure.
[0128] The movable connection can be a sliding or rotating connection, and can be achieved through a rotating shaft or slide rail, etc.
[0129] Through the above connection method, both the first mode component 30 and the second mode component 50 can include at least two positions, and at least one of the two positions can be connected to the optical path of the transmitter 11 and the receiver 13.
[0130] When the connecting component 70 is fixedly connected to the first mode component 30 and the second mode component 50, it is generally preferred that the connecting component 70 is movably connected to the scanning module 10. The movable connection can be a sliding or rotating connection. By sliding or rotating (refer to the switching of multiple objectives of a microscope), the required mode component can be moved to a designated position so as to communicate the optical path with the transmitter 11 and the receiver 13.
[0131] Another embodiment: When the connection component 70 is movably connected to the first mode component 30 and the second mode component 50, it is generally preferred that the connection component 70 is fixedly connected to the scanning module 10. The movable connection can be a sliding or rotating connection. The desired mode component can be directly slid or moved to a designated position so as to communicate the optical path with the transmitter 11 and the receiver 13.
[0132] More preferably, in order to ensure that the required mode component maintains a certain stability after being moved to the designated position and to reduce shaking or displacement, a limiting structure can be added so that the first mode component 30 or the second mode component 50 is fixed after being rotated to the required position.
[0133] The first mode component 30 and the second mode component 50 are disposed on one side of the connecting component 70 and located at opposite ends. The scanning module 10 is disposed on the other side of the connecting component 70 and can be aligned with either the first mode component 30 or the second mode component 50. When the scanning module 10 is aligned with either the first mode component 30 or the second mode component 50, the connecting component 70 can fix the position of the scanning module 10, thereby completing the connection between the scanning module 10 and the first mode component 30 or the second mode component 50. The scanning module 10 can be disposed independently of the connecting component 70 or can be movably disposed on the connecting component 70; this application does not impose any restrictions on this.
[0134] Those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of protection claimed in this application.
Claims
1. A three-dimensional scanning device, characterized in that, include: A scanning module includes at least one transmitter, at least one receiver, and a circuit unit. The transmitter emits scanning light, the receiver receives reflected light from an object under test, and the circuit unit is electrically connected to the transmitter and the receiver to construct three-dimensional point cloud data of the object under test based on the reflected light received by the receiver. A first mode component and a second mode component, both of which can be movably connected to the scanning module; when the first mode component is connected to the scanning module, the three-dimensional scanning device is used for scanning in the first mode; When the second mode component is connected to the scanning module, the 3D scanning device performs scanning in the second mode; the scanning working distance and / or scanning working area of the first mode and the second mode are different; The receiving end includes a first aperture, the aperture of which is adjustable.
2. The three-dimensional scanning device as described in claim 1, characterized in that, The first mode component includes a first housing and a first reflective element, wherein the first reflective mirror is embedded in the first housing, and the first housing is used to connect to the scanning module.
3. The three-dimensional scanning device as described in claim 2, characterized in that, The first reflective element includes any combination of a reflector or a prism.
4. The three-dimensional scanning device as described in claim 1, characterized in that, The second mode component includes a first zoom lens group and a second zoom lens group; when the second mode component is connected to the scanning module, the first zoom lens group is located on the optical path on the light-emitting side of the transmitting end, and the second zoom lens group is located on the optical path on the light-receiving side of the receiving end.
5. The three-dimensional scanning device as described in claim 4, characterized in that, The second mode component further includes an image-rotating mirror group disposed between the second zoom lens group and the receiver. The image-rotating mirror group includes at least one second reflective element to change the angle between the reflected light received by the receiver and the scanning light emitted by the transmitter.
6. The three-dimensional scanning device as described in claim 4, characterized in that, The second mode component further includes a first focusing element and a second focusing element. The first focusing element is connected to the first zoom lens group and is used to adjust the distance between the first zoom lens group and the transmitting end. The second focusing element is connected to the second zoom lens group and is used to adjust the distance between the second zoom lens group and the receiving end.
7. The three-dimensional scanning device as described in claim 1, characterized in that, The transmitting end includes a light source, a dimming element, and a first lens group arranged in sequence. The light source is used to emit light, the dimming element is used to modulate the light source into the scanning light, and the first lens group is used to project the scanning light.
8. The three-dimensional scanning device as described in claim 7, characterized in that, The transmitter also includes a second aperture, which is disposed in the optical path of the first lens group, and the aperture of the second aperture is adjustable.
9. The three-dimensional scanning device as described in claim 1, characterized in that, The receiving end includes a second lens group and a sensor arranged sequentially along the optical path. The second lens group is used to receive the reflected light reflected from the object under test and guide the reflected light to the sensor. The first aperture is disposed in the optical path of the second lens group. The sensor is used to convert the reflected light into an image signal.
10. The three-dimensional scanning device as described in claim 1, characterized in that, It also includes a connection component, which is connected to the scanning module, the first mode component and the second mode component respectively. The connection component can connect the first mode component and the second mode component to the scanning module and communicate optical paths with the transmitter and the receiver respectively.