Oral scanning device and operating method thereof

Abstract

The present invention discloses an oral scanning device and operating method, the method comprising assembling a tip portion to a main body portion and positioning the tip portion in a first assembly position; sensing a first component of the tip portion using a sensing unit of the main body portion, and obtaining a first identifier after confirming that a first identifier provided on the first component is within a sensing range of the sensing unit; adjusting the tip portion so that the tip portion is positioned in a second assembly position, the second assembly position being different from the first assembly position, in which case the first identifier is outside the sensing range of the sensing unit; and using the oral scanning device to scan an object to be measured. The present invention only provides an identifier on a first component of the tip portion (such as a reflector), and uses a sensing component of the main body portion (such as a camera) to determine whether the tip portion has been correctly assembled to the target position, resulting in a simple structure and low cost.

Description

Technical Field

[0001] The present invention relates to an oral scanning device and an operating method thereof, and in particular to an oral scanning device and an operating method thereof which can conveniently read the serial number of a tip portion and the like for subsequent operation. Background Art

[0002] The principle of structured light 3D scanning is to use a projector to project a single or multiple designed patterns onto the object being measured, forming a pattern on the surface. A camera positioned at a certain angle to the projector then captures the image. Algorithms then analyze the image to determine the object's shape, size, color, and other information. Intra-oral scanners (IOS) scale down these systems to allow for 3D scanning deep within the oral cavity.

[0003] The front end of the oral scanner has a removable, replaceable tip (TIP). When the tip is assembled on the oral scanner, the oral scanner system needs to determine the tip's serial number to take appropriate actions, including loading the current tip's parameters, counting the number of times, and the last time it was used. The tip must be disinfected after each use before it can be reused. If the interval between uses is too short, the oral scanner system will issue a warning to prevent the misuse of an unsterilized tip. Currently, oral scanner systems use two methods to determine the tip's serial number.

[0004] The first method involves installing an electronic storage device (such as an EEPROM) inside the tip, which stores the tip's serial number. The oral scanner system reads the tip's serial number through an electrical connection. However, this method has the disadvantage that the tip requires high-temperature sterilization and immersion in disinfectant after use, which can damage the electronic circuitry and electrical contacts, leading to issues like readability or poor contact. In severe cases, this can cause a short circuit, sparking a fire, and potentially endangering life and property.

[0005] The second method involves attaching a barcode, QR code, or other readable serial number to the tip. Before assembling the tip, the scanner's internal camera takes a photo of the tip. Once the serial number is read, the tip is assembled. The disadvantage of this method is that it cannot guarantee that the tip used for the photo is the same as the one used after assembly, potentially posing a medical risk.

[0006] Therefore, providing an oral scanning device and an operating method thereof that can conveniently and safely read the serial number of the tip to facilitate subsequent operations has become one of the research directions. Summary of the Invention

[0007] The object of the present invention is to provide an oral scanning device and an operating method thereof, which can obtain the serial number of the tip portion conveniently and quickly to facilitate subsequent operations.

[0008] In order to achieve the above objectives, the present invention provides an operating method of an oral scanning device, comprising:

[0009] Step A, assembling the tip portion to the main body portion and positioning the tip portion in a first assembly position;

[0010] Step B, sensing the first component of the tip portion by the sensing unit of the main body, and obtaining the first identifier after confirming that the first identifier set on the first component is within the sensing range of the sensing unit; and

[0011] Step C, adjusting the tip portion so that the tip portion is located at a second assembly position, which is different from the first assembly position. At this time, the first mark is located outside the sensing range of the sensing unit, and the oral scanning device is used to scan the object to be measured.

[0012] As an optional technical solution, the operating method further includes confirming whether the tip portion is assembled on the main body portion, and if so, executing step B; if not, executing step A.

[0013] As an optional technical solution, in step B, the sensing unit senses the first component to obtain a first image, and acquires and interprets the first identifier in the first image.

[0014] As an optional technical solution, in step B, the first image includes a region of interest and a peripheral area outside the region of interest, and when acquiring the first identifier, it is first confirmed whether the peripheral area includes the first identifier.

[0015] As an optional technical solution, step B also includes confirming the first characteristic of the tip portion according to the first identifier, and confirming whether the tip portion is usable according to the first characteristic. If so, execute step C; if not, issue a prompt message.

[0016] As an optional technical solution, the first characteristic includes the serial number, type, number of uses and / or last use time of the tip portion.

[0017] As an optional technical solution, the operating method further includes step D, wherein the oral scanning device updates the first characteristic of the tip portion after completing scanning of the object to be measured.

[0018] In addition, the present invention also provides an oral scanning device, which includes a tip portion and a main body portion. The tip portion has a first component with a first identifier provided on the first component; the main body portion has a sensing unit. During use, the tip portion is assembled to the main body portion so that the tip portion is in a first assembly position. The sensing unit senses the first component and obtains the first identifier after confirming that the first identifier is within the sensing range of the sensing unit. The tip portion is then adjusted so that the tip portion is in a second assembly position, which is different from the first assembly position. At this time, the first identifier is outside the sensing range of the sensing unit. The oral scanning device is then used to scan an object to be measured.

[0019] As an optional technical solution, the tip portion has a first alignment mark and a third alignment mark, and the main body portion has a second alignment mark and a fourth alignment mark. The tip portion is assembled to the main body portion and the first alignment mark is aligned with the second alignment mark so that the tip portion is located in the first assembly position; the third alignment mark is aligned with the fourth alignment mark so that the tip portion is located in the second assembly position.

[0020] As an optional technical solution, the sensing unit is a camera, and the first component is a reflector.

[0021] The oral scanning device and operating method of the present invention include a first marker (image or text) capable of determining a first characteristic of the tip portion, disposed on a first component (reflector) within the tip portion. When the tip portion is assembled to the main body at a first assembly angle, a sensing unit (camera) within the main body can capture the first marker and determine whether the tip portion is currently usable. After confirming that the tip portion is currently usable, the tip portion is rotated by an angle (e.g., 90°) to scan the object to be tested. At this point, the first marker will be outside the sensing range of the sensing unit (optically inactive zone) and will not be captured by the sensing unit, thereby not affecting the basic functions of the oral scanning device.

[0022] The present invention only sets an identification on the first component of the tip (such as a reflector), and uses the sensing component of the main body (such as a camera) to determine whether the tip is correctly assembled to the target position. It has a simple structure and low cost. There is no need to set any electronic components and electrical connection parts on the tip specifically for identification, so there will be no damage to the components due to high-temperature disinfection and immersion in disinfectant liquid. The assembly, rotation, and disassembly actions of the tip are all carried out under the supervision of the sensing component of the main body (such as a camera), and the tip will not be replaced secretly.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A schematic diagram of the tip portion of the oral scanning device of the present invention in a first assembly position;

[0025] Figure 2 is a schematic diagram of the relationship between the first component and the sensing range when the tip portion has a first assembly position;

[0026] Figure 3 A schematic diagram of the tip portion of the oral scanning device of the present invention having a second assembly position;

[0027] Figure 4 is a schematic diagram of the relationship between the first component and the sensing range when the tip portion has a second assembly position;

[0028] Figure 5 is another schematic diagram of the relationship between the first component and the sensing range when the tip portion has a second assembly position;

[0029] Figure 6 Flowchart of the operating method of the oral scanning device of the present invention. DETAILED DESCRIPTION

[0030] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0031] Please refer to Figures 1 to 6 , Figure 1 A schematic diagram of the tip portion of the oral scanning device of the present invention in a first assembly position; Figure 2 is a schematic diagram of the relationship between the first component and the sensing range when the tip portion has a first assembly position; Figure 3 A schematic diagram of the tip portion of the oral scanning device of the present invention having a second assembly position; Figure 4 is a schematic diagram of the relationship between the first component and the sensing range when the tip portion has a second assembly position; Figure 5 is another schematic diagram of the relationship between the first component and the sensing range when the tip portion has a second assembly position; Figure 6 Flowchart of the operating method of the oral scanning device of the present invention.

[0032] like Figures 1 to 5As shown, the oral scanning device 100 of the present invention includes a tip portion 110 and a main body 120. The tip portion 110 has a first component 111, and a first identifier 112 is provided on the first component 111. The main body 120 has a sensing unit 121. When in use, the tip portion 110 is assembled to the main body 120 and the tip portion 110 is located in a first assembly position. The sensing unit 121 senses the first component 111 and obtains the first identifier 112 after confirming that the first identifier 112 is within the sensing range of the sensing unit 121. Then, the tip portion 110 is adjusted so that the tip portion 110 is located in a second assembly position. The second assembly position is different from the first assembly position. At this time, the first identifier 112 is outside the sensing range of the sensing unit 121, and the oral scanning device 100 is used to scan the object to be measured.

[0033] In actual operation, the first component 111 can be a reflector disposed on the tip portion 110; the sensing unit 121 is a camera disposed inside the main body 120. The first component 111 captures the first component 111 to obtain a first image, and the user can obtain the first identifier 112 through the first image 112. In actual operation, the first identifier 112 can be disposed adjacent to the edge of the first component 111, so that when the tip portion 110 is in the first assembly position, the first identifier 112 is within the sensing range of the sensing unit 121 ( Figure 2 ), so that the sensing unit 121 can successfully obtain the first identifier 112; when the tip portion 110 is adjusted to be located in the second assembly position (in actual operation, this can be achieved by rotating the tip portion 110 by a certain angle (for example, 90°)), the position of the tip portion 110 together with the first component 111 relative to the sensing unit 121 changes, and the first identifier 112 is located in the sensing range of the sensing unit 121 ( Figure 4 、 Figure 5 (indicated by dotted lines in the figure), so as not to affect the normal scanning of the oral scanning device 100.

[0034] In this embodiment, the tip portion 110 is rotated 90° when it is adjusted from the first assembly position to the second assembly position. In actual operation, it can be rotated 90° clockwise or 90° counterclockwise to form Figure 4 、 Figure 5 In actual operation, the tip portion 110 may be adjusted from the first assembly position to the second assembly position by rotating to other angles, so that the first mark 112 is within the sensing range of the sensing unit 121 in the first assembly position and outside the sensing range of the sensing unit 121 in the second assembly position.

[0035] In one embodiment, the tip portion 110 has a first alignment mark and a third alignment mark, and the main body 120 has a second alignment mark and a fourth alignment mark. When the tip portion 110 is assembled with the main body 120, the first alignment mark of the tip portion 110 can be aligned with the second alignment mark of the main body 120 to position the tip portion 110 in the first assembly position. The tip portion 110 can be rotated to align the third alignment mark of the tip portion 110 with the fourth alignment mark on the main body 120 to position the tip portion 110 in the second assembly position. In actual operation, the first and third alignment marks can be the same mark; alternatively, the second and fourth alignment marks can be the same mark. The provision of alignment marks allows the user to conveniently and accurately assemble the tip portion 110 in the target position.

[0036] In the oral scanning device 100 of the present invention, the first identifier 112 of the tip portion 110 is disposed on the first component 111. The tip portion 110 is first positioned in a first assembly position. At this point, the sensing range of the sensing unit 121 of the main body 120 covers the first identifier 112, thereby acquiring the first identifier 112 and confirming whether the tip portion 110 is usable based on the first identifier 112. If the tip portion 110 is determined to be usable, the tip portion 110 is adjusted to a second assembly position. At this point, the sensing range of the sensing unit 121 of the main body 120 does not cover the first identifier 112, thereby enabling normal scanning of the object to be measured without being affected by the first identifier 112. The oral scanning device 100 of the present invention adjusts the tip portion 110 to the first assembly position and the second assembly position to respectively perform marker interpretation and normal scanning. Because the first marker 112 is provided on the first component 111 and is captured and interpreted by the sensing unit 121, there is no need to provide any electronic components or electrical connection parts specifically for the first marker 112 on the tip portion 110 as in the prior art. This prevents component damage during the disinfection process, and the device has a simple structure and is easy to operate.

[0037] The present invention also provides an operating method of an oral scanning device, which comprises:

[0038] Step A ( S110 ), assembling the tip portion 110 to the main body 120 and positioning the tip portion 110 at a first assembly position;

[0039] Step B (S120), sensing the first component 111 of the tip portion 110 by the sensing unit 121 of the main body 120, and obtaining the first identifier 112 after confirming that the first identifier 112 disposed on the first component 111 is within the sensing range of the sensing unit 121; and

[0040] In step C (S130), the tip portion 110 is adjusted so that the tip portion 110 is located at a second assembly position, which is different from the first assembly position. At this time, the first mark 112 is outside the sensing range of the sensing unit 121, and the oral scanning device 100 is used to scan the object to be tested.

[0041] In one embodiment, before step A, it is further included to confirm whether the tip portion 110 is assembled on the main body 120 . If so, step B is executed; if not, step A is executed.

[0042] In practice, when the oral scanning device 100 is not in use, the main body 120 is typically placed on a stand (not shown) to enter power-saving mode (or sleep mode). The oral scanning device 100 includes a processing unit (not shown). When the main body 120 is removed from the stand, indicating that the main body 120 has exited power-saving mode (or sleep mode), the processing unit detects whether the tip 110 is assembled to the main body 120. In practice, a sensor may be provided on the main body 120 at the location corresponding to the mounting position of the tip 110. When the tip 110 is assembled to the main body 120, the sensor may generate an electrical signal or mechanical deformation, allowing the processing unit to confirm whether the tip 110 is assembled to the main body 120 by detecting the sensor. The sensor may be, for example, a Hall effect sensor or a spring. In practice, the sensor may also provide auxiliary fixing when the tip 110 is assembled to the main body 120.

[0043] In one embodiment, in step B, the sensing unit 121 senses the first component 111 to obtain a first image, and acquires and interprets the first identifier 112 in the first image. In actual operation, the user may not accurately assemble the tip portion 110 in the first assembly position. Thus, in another embodiment, in step B, the sensing unit 121 senses the first component 111 to obtain a first image, and confirms whether the first identifier 112 is included in the first image; if so, the first identifier 112 is recognized; if not, a prompt message is issued. The user can adjust the tip portion 110 according to the prompt message and re-execute step B until the first identifier 112 is included in the first image. The method of adjusting the tip portion 110 is, for example, to rotate the tip portion 110 in one direction by a certain angle (e.g., 5°).

[0044] In one embodiment, step B further includes confirming a first characteristic of the tip 110 based on the first identifier 112, and confirming whether the tip 110 is usable based on the first characteristic. In actual operation, the first identifier 112 is text, an image, or a combination thereof that can be analyzed by various interpretation methods, such as a barcode, a QR code, or other. The first characteristic includes the serial number, type, number of uses, and / or last use time of the current tip 110. If it is determined to be usable, step C is executed; if not, a prompt message is issued. For example, the tip 110 has a preset number of uses. When it is determined that the current tip 110 has been used more than the preset number of uses, the oral scanning device 100 issues a first prompt message to inform the user that the current tip 110 is unusable due to the excessive number of uses. For another example, the tip portion 110 records the last usage time after use and has a preset interval time. When it is determined that the last usage time and the current usage time of the current tip portion 110 are less than the preset interval time, there is a risk that the current tip portion 110 is not effectively disinfected after the previous use. In this case, the oral scanning device 100 issues a second prompt message to inform the user that the current tip portion 110 is unusable due to the short usage interval time.

[0045] In the present invention, when the tip portion 110 is in the first assembly position, the sensing range of the sensing unit 121 in the main body 120 includes the first identifier 112, so that the first identifier 112 can be sensed, and the first characteristic of the current tip portion 110 can be confirmed after obtaining the first identifier 112. After understanding the first characteristic and confirming that the tip portion 110 is usable, the tip portion 110 is adjusted to the second assembly position. At this time, because the tip portion 110 drives the first component 111 (and the first identifier) to change position, the sensing range of the sensing unit 121 does not include the first identifier 112. Therefore, when scanning the object to be measured, the first identifier 112 will not interfere with the scanning result, thereby ensuring the accuracy of the scanning result.

[0046] In actual operation, first component 110 is a reflector, and first marker 112 is positioned at an edge. In the first image obtained when tip 110 is in the first assembly position, first marker 112 is also located at a relatively edge position. Specifically, the first image may include the region of interest and a peripheral region outside the region of interest. When determining whether first marker 112 is included in the first image, the peripheral region is more likely to contain the first marker, so as to speed up the calculation.

[0047] In actual operation, when adjusting the tip portion 110 to the second assembly position, the user may not accurately assemble the tip portion 110 in the second assembly position. Therefore, the operation method may further include: the sensing unit 121 sensing the first component 111 to confirm whether the first mark 112 is within the sensing range of the sensing unit 121. If not, the oral scanning device 100 is used to scan the object to be measured; if so, a prompt message is issued. The user can adjust the tip portion 110 according to the prompt message and then re-sense the first component 111 until the first mark 112 is outside the sensing range of the sensing unit 121, and then use the oral scanning device 100 to scan the object to be measured.

[0048] In actual operation, such as Figure 1 and Figure 3 As shown, the main body 120 is also provided with a projection unit 122. When scanning an object to be measured, the projection unit 122 projects a preset pattern onto the first component 111. The pattern is initially reflected by the first component 111 and then projected onto the surface of the object to be measured. After reflecting off the surface of the object to be measured, the pattern is then projected toward the first component 111 again. After a second reflection by the first component 111, the pattern is projected onto the sensing unit 111, allowing the sensing unit 111 to capture the relevant image. Furthermore, when the tip portion 110 is in the second assembly position, the first marker 112 is located outside the projection range of the projection unit 122 to avoid affecting the projection unit 122.

[0049] In one embodiment, the operating method further includes step D, wherein after the intraoral scanning device 100 is used to scan the object to be detected, the first characteristic of the tip portion 110 is updated, such as the aforementioned number of uses and / or the last use time.

[0050] The following describes a method for operating an oral scanning device using a specific embodiment, which includes the following steps:

[0051] Step 11: confirm whether the tip portion 110 is assembled to the main body 120, the tip portion 110 has a first component 111, and the first component 111 is provided with a first mark 112. The main body 120 has a sensing unit 121; if yes, proceed to step 13; if not, proceed to step 12;

[0052] Step 12: The tip portion 110 has a first alignment mark, and the main body 120 has a second alignment mark. The tip portion 110 is assembled to the main body 120 so that the first alignment mark on the tip portion 110 is aligned with the second alignment mark on the main body 120. At this time, the tip portion 110 and the main body 120 have a first relative position and the tip portion 110 is in the first assembly position.

[0053] Step 13: The sensing unit 121 senses the first component 111. In actual operation, the sensing unit 121 may be a fixed position capture unit, and the sensing unit 121 takes pictures to obtain a first image;

[0054] Step 14: confirm whether the first image contains the first identifier 112. If so, execute step 15; if not, issue a prompt message to remind the user that the current tip portion 110 and the body portion 120 may not match;

[0055] Step 15, confirming the first characteristic of the tip portion 110 according to the first identifier 112 to confirm whether the tip portion 110 is usable; if so, executing step 16; if not, issuing a prompt message to remind the user that the current tip portion 110 is unusable;

[0056] Step 16: The tip portion 110 has a third alignment mark, and the body portion 120 has a fourth alignment mark. The tip portion 110 and the body portion 120 are adjusted so that the third alignment mark on the tip portion 110 is aligned with the fourth alignment mark on the body portion 120. At this time, the tip portion 110 and the body portion 120 have a second relative position and the tip portion 110 is in the second assembly position.

[0057] Step 17: the sensing unit 121 senses the first component 111 to obtain a second image;

[0058] Step 18, confirming whether the second image contains the first identifier 112, if not, executing step 19; if so, issuing a prompt message to remind the user that the current tip portion 110 and the body portion 120 may not match;

[0059] Step 19 : Scan the object to be measured and update the first characteristic of the tip portion 110 when the scanning is completed.

[0060] Next, another specific embodiment is used to illustrate the operation method of the oral scanning device, which includes the following steps:

[0061] Step 21: confirm whether the tip portion 110 is assembled to the main body 120, the tip portion 110 has a first component 111, and the first component 111 is provided with a first mark 112. The main body 120 has a sensing unit 121; if yes, proceed to step 23; if not, proceed to step 22;

[0062] Step 22, assembling the tip portion 110 to the main body 120 and positioning the tip portion 110 and the main body 120 at a first relative position;

[0063] Step 23: The sensing unit 121 senses the first component 111. In actual operation, the sensing unit 121 may be a fixed position capture unit, and the sensing unit 121 takes pictures to obtain a first image;

[0064] Step 24: confirm whether the first image contains the first mark 112. If so, confirm that the tip portion 110 has been assembled to the first assembly position and execute step 25; if not, adjust the position of the tip portion 110 and execute step 23;

[0065] Step 25, confirming the first characteristic of the tip portion 110 according to the first identifier 112 to confirm whether the tip portion 110 is usable; if so, executing step 26; if not, issuing a prompt message;

[0066] Step 26, adjusting the tip portion 110 and the body portion 120 to have a second relative position;

[0067] Step 27: the sensing unit 121 senses the first component 111 to obtain a second image;

[0068] Step 28, confirming whether the second image contains the first mark 112, if not, confirming that the tip portion 110 has been assembled to the second assembly position, and executing step 29; if not, adjusting the position of the tip portion 110 and executing step 27;

[0069] Step 29 : Scan the object to be measured and update the first characteristic of the tip portion 110 when the scanning is completed.

[0070] In the present invention, a first identifier (image or text) capable of determining a first characteristic of the tip is disposed on a first component (reflector) within the tip. When the tip is assembled to the main body in a first assembly position, a sensing unit (camera) within the main body can capture the first identifier and determine whether the tip is currently usable. After confirming that the tip is currently usable, the tip is rotated a certain angle (e.g., 90°) to a second assembly position to scan the object to be tested. At this point, the first identifier will be outside the sensing range of the sensing unit (optically inactive zone) and will not be captured by the sensing unit, thereby not affecting the basic functions of the oral scanning device.

[0071] The oral scanning device of the present invention only provides an identifier on a first component (e.g., a reflector) of the tip, and uses a sensing component (e.g., a camera) in the main body to determine whether the tip is correctly assembled in the target position. This device has a simple structure and low cost. The tip does not require any electronic components or electrical connections specifically for the identifier, thus preventing component damage from high-temperature disinfection or immersion in disinfectant liquids. The assembly, rotation, and disassembly of the tip are all performed under the supervision of the main body's sensing component (e.g., a camera), preventing the tip from being surreptitiously replaced.

[0072] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A method for operating an oral scanning device, characterized in that: Step A, assembling the tip portion to the main body portion and positioning the tip portion in a first assembly position; Step B, sensing the first component of the tip portion by the sensing unit of the main body, and obtaining the first identifier after confirming that the first identifier set on the first component is within the sensing range of the sensing unit; as well as Step C, adjusting the tip portion so that the tip portion is located at a second assembly position, the second assembly position being different from the first assembly position, and the first mark being located outside the sensing range of the sensing unit, and scanning the object to be measured using the oral scanning device; The first component is a reflector disposed on the tip portion, the sensing unit is a camera disposed inside the main body portion, and the first marker is disposed at an edge position of the first component.

2. The method for operating the oral scanning device according to claim 1, wherein: The operating method further includes confirming whether the tip portion is assembled on the main body portion, and if so, executing step B; if not, executing step A.

3. The method for operating the oral scanning device according to claim 1, wherein: In step B, the sensing unit senses the first component to obtain a first image, and acquires and interprets the first identifier in the first image.

4. The method for operating the oral scanning device according to claim 3, wherein: In step B, the first image includes a region of interest and a peripheral area outside the region of interest. When acquiring the first marker, it is first determined whether the peripheral area includes the first marker.

5. The method for operating the oral scanning device according to claim 1, wherein: Step B also includes confirming the first characteristic of the tip portion according to the first identifier, and confirming whether the tip portion is usable according to the first characteristic. If so, step C is executed; if not, a prompt message is issued.

6. The method for operating the oral scanning device according to claim 5, wherein: The first characteristic includes the serial number, type, number of uses and / or last use time of the tip.

7. The method for operating the oral scanning device according to claim 5, wherein: The operating method further includes step D, wherein after the oral scanning device completes scanning the object to be detected, the first characteristic of the tip portion is updated.

8. An oral scanning device, characterized in that include: The tip portion has a first component, and a first mark is set on the first component; as well as A main body having a sensing unit; During use, the tip portion is assembled to the main body so that the tip portion is located in a first assembly position. The sensing unit senses the first component and obtains the first identifier after confirming that the first identifier is located within the sensing range of the sensing unit. The tip portion is then adjusted so that the tip portion is located in a second assembly position, which is different from the first assembly position. At this time, the first identifier is located outside the sensing range of the sensing unit, and the oral scanning device is used to scan the object to be measured. The first component is a reflector disposed on the tip portion, the sensing unit is a camera disposed inside the main body portion, and the first marker is disposed at an edge position of the first component.

9. The oral scanning device according to claim 8, characterized in that: The tip portion has a first alignment mark and a third alignment mark, the main body portion has a second alignment mark and a fourth alignment mark, and the tip portion is assembled to the main body portion with the first alignment mark aligned with the second alignment mark so that the tip portion is located in the first assembly position; The third alignment mark is aligned with the fourth alignment mark so that the tip portion is located at the second assembly position.

Images