Three-dimensional face scanner
By designing a storage three-dimensional facial scanner, the rotational connection between the fixed arm and the movable arm is solved, and the problem of large space occupancy in the storage and transportation of dental facial scanners is improved, achieving the portability of the equipment and scanning flexibility.
Patent Information
- Application Number
- CN202421561994.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing dental facial scanners take up a lot of space during storage and transportation, and are not flexible enough, making them prone to damage.
A three-dimensional facial scanner is designed, adopting the structure of a fixed arm and a movable arm. Through the rotational connection between the movable arm and the fixed arm, the scanner is realized. The upper, lower, front and cheeks of the human face are scanned by the first scanning point, the second scanning point and the right scanning point, and the fill light is equipped to ensure the quality of data acquisition.
It effectively reduces the space occupied by the equipment in non-use states, facilitates portability and transportation, and improves scanning flexibility and data acquisition accuracy.
Smart Images
Figure CN223081657U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of scanners, and particularly to a three-dimensional facial scanner. Background Art
[0002] In the fields of medical imaging and digital technology, dental treatment has undergone a transformation from traditional manual operations to highly digital and automated ones. As a key tool in this transformation, the dental facial scanner provides unprecedented convenience and precision for dental treatment. The facial scanner is the integration of high-precision optical imaging and technologies such as computers and artificial intelligence. The facial scanner obtains three-dimensional data of the patient's face through a non-contact method using the principle of optical imaging. By emitting light of a specific wavelength through the scanning lens and receiving the light reflected from the face, the three-dimensional structure of the face is reconstructed by calculating the transmission time and direction of the light. The application of the facial scanner in the dental field is very extensive. First, it can be used to fabricate customized dentures and restorations, such as dental crowns, bridges, and dental implants. By obtaining accurate data of the patient's face, it can ensure that the restoration perfectly matches the patient's facial morphology and occlusion relationship. Second, it can also be used in orthodontic treatment to help doctors formulate more personalized treatment plans. In addition, the facial scanner can also be used in the fields of oral and maxillofacial surgery, periodontal disease, and oral restoration.
[0003] Most facial scanner instruments occupy a large space, which will inevitably cause inconvenience in storage and transportation. At the same time, due to the inconvenience of storage, the occupied space is relatively large, increasing the probability of damage caused by collision during transportation and lacking flexibility during use. Summary of the Invention
[0004] The purpose of the utility model is to provide a three-dimensional facial scanner, aiming to solve the problem of difficult storage mentioned in the above background art.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a three-dimensional facial scanner, comprising:
[0006] A fixed arm, both ends of which have a first scanning point;
[0007] A movable arm, which is rotatably connected to the fixed arm, and both ends of the movable arm have a second scanning point;
[0008] A facing scanning point, which is arranged towards the human face and is located at the rotational connection point of the fixed arm and the movable arm;
[0009] When the movable arm rotates to a perpendicular state with the fixed arm, the upper, lower, front, and both cheeks of the human face are scanned simultaneously through the first scanning point, the second scanning point, and the facing scanning point, constituting the scanning working state;
[0010] When the movable arm rotates to overlap with the fixed arm, a storage state is formed.
[0011] In a further technical solution, bending segments facing the human face are formed at both ends of the fixed arm, and the first scanning point is located on the side of the bending segment facing the human face.
[0012] Bending segments facing the human face are also formed at both ends of the movable arm, and the second scanning point is located on the side of the bending segment facing the human face.
[0013] In a further technical solution, the bending angle ranges between the bending segment and the fixed arm or the movable arm are both within 135°±30°.
[0014] In a further technical solution, cavities are provided on the surface along the length direction of the fixed arm for assisting natural light to irradiate on the human face.
[0015] In a further technical solution, a rotating column is provided in the cavity. The rotating column can rotate around its own axis in the cavity, and the movable arm is connected to the fixed arm through the rotating column.
[0016] In a further technical solution, both the first scanning point and the second scanning point are 3D depth cameras.
[0017] In a further technical solution, a supplementary light is further included to emit light toward the human face.
[0018] In a further technical solution, the supplementary light includes a plurality of forward supplementary lights installed on the middle surface of the fixed arm, the middle surface of the movable arm or the surface of the rotating column. All the forward supplementary lights are symmetrically arranged with respect to the center line of the rotating column.
[0019] In a further technical solution, the supplementary light further includes side supplementary lights. A side supplementary light is disposed around each first scanning point and each second scanning point.
[0020] Regarding the "first", "second", etc. used in this text, they do not particularly refer to the order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.
[0021] Regarding the "connection" or "positioning" used in this text, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, and can also refer to two or more components or devices operating or acting on each other.
[0022] Regarding the "including", "comprising", "having", etc. used in this text, they are all open-ended terms, that is, they mean including but not limited to.
[0023] Regarding the terms used in this text, unless otherwise specified, they generally have their ordinary meanings in the field, within the context of this case, and in the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this case.
[0024] Regarding the terms such as "front", "rear", "upper", "lower", "left", and "right" used in this text, they are all directional terms. In this case, they are only used to illustrate the positional relationship between various structures and do not limit the specific direction of the protection solution of this case and during actual implementation.
[0025] The technical effects of this utility model are as follows:
[0026] This utility model can achieve the overall storage and deployment through the cooperation of the movable arm and the fixed arm. Specifically, the states of the movable arm and the fixed arm are divided into two parts. When in use, directly guide the movable arm to rotate to a perpendicular state with the fixed arm. Then, through the first scanning point, the second scanning point, and the facing scanning point, scan the upper, lower, front, and both cheeks of the human face simultaneously to form a scanning working state. When the movable arm rotates to overlap with the fixed arm, it forms a storage state, thus significantly reducing the space occupied by the entire device. Brief Description of the Drawings
[0027] Figure 1 It is a schematic structural diagram when the fixed arm and the movable arm of this utility model are in a perpendicular state;
[0028] Figure 2 It is a schematic structural diagram of the cavity structure of this utility model;
[0029] Figure 3 It is a schematic structural diagram of the rotating column of this utility model.
[0030] In the above drawings: 1. Fixed arm; 2. First scanning point; 3. Movable arm; 4. Second scanning point; 5. Facing scanning point; 6. Rotating column; 7. Forward fill light; 8. Side fill light; 9. Cavity; 10. Rotating head; 11. Rotating column; 12. Stable seat. Detailed Description of the Preferred Embodiments
[0031] The following further describes this utility model in conjunction with the drawings and embodiments:
[0032] Embodiment: The following will clearly illustrate this case with diagrams and detailed descriptions. After any person skilled in the art understands the embodiments of this case, they can make changes and modifications to the technology taught by this case without departing from the spirit and scope of this case.
[0033] The terms used in this article are only for describing specific embodiments and are not intended to limit this case. Singular forms such as "a", "this", "this", "the present", and "the" as used herein also include plural forms.
[0034] Embodiment 1: Refer to Figures 1 - 3 As shown, a telescopic frame locking structure includes:
[0035] A fixed arm 1, both ends of which have first scanning points 2 (generally, the fixed arm 1 is fixedly connected to external fixed base and other components, such as Figures 1 - 3 , which represents a fixing method, that is, directly fixedly connecting the base to one end of the fixed arm 1, but it does not mean that there is only one fixing method, and other fixing methods can also be selected, which will not be elaborated here too much).
[0036] A movable arm 3, which is rotatably connected to the fixed arm 1 (can be directly driven by components such as a rotating shaft, a pin, or a motor, which will not be elaborated here too much, as long as the purpose of the movable arm 3 rotating relative to the fixed arm 1 can be achieved), and both ends of the movable arm 3 have second scanning points 4.
[0037] A facing scanning point 5, which is arranged facing the human face and is located at the rotation connection point of the fixed arm 1 and the movable arm 3 (generally, the rotation connection point of the fixed arm 1 and the movable arm 3 is set at the center of the fixed arm 1 and the movable arm 3, and this method is a preferred method, but it is not limited to this method. It is also possible that the center of the movable arm 3 is rotationally connected to a position slightly above the center of the fixed arm 1 or other connection methods, which will not be elaborated here too much).
[0038] When the movable arm 3 rotates to a perpendicular state with the fixed arm 1, the upper, lower, front, and both cheeks of the human face are simultaneously scanned through the first scanning point 2, the second scanning point 4, and the facing scanning point 5, constituting a scanning working state; when the movable arm 3 rotates to overlap with the fixed arm 1, a storage state is constituted.
[0039] The present utility model can realize the overall storage and deployment through the cooperation of the movable arm 3 and the fixed arm 1. Specifically, the states of the movable arm 3 and the fixed arm 1 are divided into two parts. When in use, directly guide the movable arm 3 to rotate to a perpendicular state with the fixed arm 1. Then, the upper, lower, front, and both cheeks of the human face are simultaneously scanned through the first scanning point, the second scanning point, and the facing scanning point, constituting a scanning working state; when the movable arm 3 rotates to overlap with the fixed arm 1, a storage state is constituted, so that the space occupied by the entire device can be greatly reduced.
[0040] Furthermore, since some people have long and narrow faces, the moving scanning plane formed by the moving arm 3 perpendicular to the fixed arm 1 may not be able to fully cover the cheeks of the human face when the moving arm 3 moves. Therefore, in the scanning working state, rotating the moving arm 3 can make the second scanning points 4 at both ends move within a certain range, so as to irradiate a larger area of the human face. That is, the two second scanning points 4 will respectively scan the upper and lower areas of the cheeks of the human face. Normally, the preferred angle is that the moving arm 3 is perpendicular to the fixed arm 1, that is, the two are at 90 degrees. In actual work, it can be changed in the state of 0-90 degrees (i.e., overlapping and perpendicular). For example, after scanning at 90 degrees, 30 degrees or 45 degrees can be used for multiple scans.
[0041] In some specific embodiments, bending sections facing the human face are formed at both ends of the fixed arm 1, and the first scanning point 2 is located on the side of the bending section facing the human face.
[0042] Bending sections facing the human face are also formed at both ends of the moving arm 3, and the second scanning point 4 is located on the side of the bending section facing the human face.
[0043] In some specific embodiments, the bending angle range between the bending section and the fixed arm 1 or the moving arm 3 is within 135°±30°.
[0044] The bending section is provided to make the scanning areas of the first scanning point 2 and the second scanning point 4 face the human face directly, and there will be no scanning blind spots due to the shaking of the human face.
[0045] At the same time, the preferred angle is 135°. For example, Figure 1 , the bending section and the fixed arm 1 or the moving arm 3 both form a structure similar to a bracket shape "〕". When scanning, the scanning range formed by the first scanning point 2 on the fixed arm 1 during operation and the scanning range formed by the second scanning point 4 on the moving arm 3 during operation will cover the human face, that is, the scanning areas of the first scanning point 2 and the second scanning point 4 are larger and can fully irradiate the human face.
[0046] In some specific embodiments, a cavity 9 is provided on the surface along the length direction of the fixed arm 1 to assist natural light in irradiating the human face.
[0047] A rotating column 6 is arranged in the cavity 9. The rotating column 6 can rotate around its own axis in the cavity 9, and the moving arm 3 is connected to the fixed arm 1 through the rotating column 6.
[0048] Specifically, it can be referred to Figure 3, The specific structure of the rotating column 6 is as follows: a rotating head 10 (which can be integrally formed or fixedly arranged by means of a connecting piece, etc.) is provided at the central position of the movable arm 3, a rotating column 11 and a stabilizing seat 12. By rotating the rotating head 10, the rotating column 11 and the stabilizing seat 12 can be driven to rotate. The rotating column 11 is located in the cavity 9. At the same time, a clamping sleeve for clamping the rotating column 11 can be arranged in the cavity 9, such as a crescent-shaped clamping sleeve installed in the cavity 9, to limit the rotating column 11.
[0049] In some specific embodiments, both the first scanning point 2 and the second scanning point 4 are 3D depth cameras. Specifically, their specific models can be Mantis-Vision Hebe, or others, which will not be elaborated here too much.
[0050] In some embodiments: when the movable arm 3 is perpendicular to the fixed arm 1, the axes of the first scanning point 2 and the second scanning point 4 intersect at a point with the axis of the facing scanning point 5 at the same time.
[0051] Such a setting is to prevent the collected images from deviating from the preset area and thus causing the phenomenon of scanning blind spots.
[0052] In some specific embodiments, a fill light is further included to emit light towards the human face, so that when the first scanning point 2, the second scanning point 4, and the facing scanning point 5 collect data subsequently, the data collection quality will not be affected by insufficient light.
[0053] In some specific embodiments, the fill light includes a plurality of forward fill lights 7 installed on the middle surface of the fixed arm 1, the middle surface of the movable arm 3, or the surface of the rotating column 6. All the forward fill lights 7 are symmetrically arranged about the center line of the rotating column 6.
[0054] The forward fill light 7 can emit light directly towards the human face.
[0055] In some specific embodiments, the fill light further includes a side fill light 8. A side fill light 8 is arranged around each of the first scanning points 2 and each of the second scanning points 4.
[0056] The side fill light 8 can apply light to the human cheeks, forehead, and chin areas.
[0057] During specific operation:
[0058] The guiding fixed arm 1 is in the same straight line as the nasal tip area of the human face. After that, rotate the rotating column 6 to make the movable arm 3 rotate to a perpendicular state with respect to the fixed arm 1. At this time, the first scanning point 2, the second scanning point 4, and the facing scanning point 5 simultaneously scan the upper, lower, front, and both cheeks of the human face. That is to say, the movable arm 3 rotates to the horizontal, that is, perpendicular to the fixed arm 1, forming a cross shape. At this time, the first scanning point 2, the second scanning point 4, and the facing scanning point 5 will cover the human face, and then capture facial data from five directions: directly in front, obliquely above, obliquely below, diagonally left in front, and diagonally right in front.
[0059] After the scanning is completed, the movable arm 3 can be rotated to overlap with the fixed arm 1, occupying a small space and being convenient to carry.
[0060] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.
Claims
1. A three-dimensional facial scanner, characterized in that: Comprising: A fixed arm (1) having first scanning points (2) at both ends thereof; A movable arm (3) rotatably connected to the fixed arm (1), and second scanning points (4) are provided at both ends of the movable arm (3); A facing scanning point (5) arranged facing the human face and located at the rotational connection point of the fixed arm (1) and the movable arm (3); When the movable arm (3) rotates to a state perpendicular to the fixed arm (1), the upper, lower, front and both cheeks of the human face are simultaneously scanned by the first scanning points (2), the second scanning points (4) and the facing scanning point (5), constituting a scanning working state; When the movable arm (3) rotates to overlap with the fixed arm (1), a storage state is constituted.
2. The three-dimensional facial scanner according to claim 1, wherein: Bending sections facing the human face are formed at both ends of the fixed arm (1), and the first scanning points (2) are located on the side of the bending section facing the human face; Bending sections facing the human face are also formed at both ends of the movable arm (3), and the second scanning points (4) are located on the side of the bending section facing the human face.
3. The three-dimensional face scanner according to claim 2, wherein: The bending angle range between the bending section and the fixed arm (1) or the movable arm (3) is within 135° ± 30°.
4. The three-dimensional facial scanner according to claim 1, wherein: A cavity (9) is provided on the surface along the length direction of the fixed arm (1) for assisting natural light to irradiate on the human face.
5. The three-dimensional facial scanner according to claim 4, wherein: A rotating column (6) is provided in the cavity (9), the rotating column (6) can rotate around its own axis in the cavity (9), and the movable arm (3) is connected to the fixed arm (1) through the rotating column (6).
6. The three-dimensional face scanner according to claim 1, wherein: Both the first scanning points (2) and the second scanning points (4) are 3D depth cameras.
7. The three-dimensional facial scanner according to claim 1, wherein: It further includes fill lights for emitting light towards the human face.
8. The three-dimensional facial scanner according to claim 7, wherein: The fill lights include a plurality of forward fill lights (7) installed on the middle surface of the fixed arm (1), the middle surface of the movable arm (3) or the surface of the rotating column (6), and all the forward fill lights (7) are symmetrically arranged about the center line of the rotating column (6).
9. The 3D facial scanner according to claim 7, wherein: The fill lights further include side fill lights (8), and a side fill light (8) is circumferentially arranged outside each first scanning point (2) and each second scanning point (4).