KR101852834B1 - 3-dimension scaner for oral cavity - Google Patents

Abstract

A three-dimensional scanner according to an embodiment of the present invention includes: a lens unit having a 360 degree angle of view; And an image processing unit for receiving a pattern image from a subject irradiated with a pattern and generating a three-dimensional image of the subject based on the pattern image.

Description

3-DIMENSION SCANER FOR ORAL CAVITY < RTI ID = 0.0 >

The present invention relates to a three-dimensional scanner, and more particularly, to a scanner capable of acquiring a three-dimensional image of the oral cavity.

Non-contact 3D scanners using laser or light have a wide range of applications. There is a wide range of applications such as engineering, film, animation, industrial design, medical, artwork, fancy, cultural materials, restoration and entertainment.

Especially, in order to shorten the manufacturing time of the product in the industrial field, many investments and research are carried out, and the 3D scanner is used for the purpose of reducing costs at various stages during development and mass production of the product. Being able to handle what exists in reality as three-dimensional digital data has many advantages. You do not have to work every day in dangerous places, you can open the necessary information back to your computer at any time, and accurate real-world 3D dimension and shape information makes the future more accurate by simulation and duplication process.

In addition, 3D scanners are used to create customized instruments for the shape of patients to make orthodontic appliances and teeth in the medical field. This traditionally changes the way the model is made through plastering. From the scanned three-dimensional data, the calibration tool, prosthesis, artificial organs, artificial teeth, etc. are designed and processed through CAM software through dedicated software. Traditionally, in orthodontics and restoration work, in particular, in the dental department, a gypsum casting production work which is a form of a sentence to become a die for restoration work is obtained after obtaining the impression which is the shape of the bone of the patient to be treated. In addition, the overall process of modeling and producing customized artificial and implanted dentures for individual patients according to the doctor's diagnosis is performed manually. In particular, artificial teeth and implant dentures are subjected to a variety of complicated production processes, such as porcelain fusing and die casting molding. This overall processing depends entirely on the skill and psychological decisions of the technician. Efforts have been made by NOBELBIO-CARE and CEREC teams in Switzerland 27 years ago to take advantage of industrial process technology to improve precision and conformity in the design and production of artificial and implanted dentures. This technique is not easy to design a free-form surface of a tooth shape. In addition, due to limitations of production materials for processing such as CAM / CNC / RP, it has been difficult to produce and mold artificial crown. In order to overcome these difficulties, we have been continuing our technological challenges while continuing our technological development and clinical experiments. As the digital technology and artificial prosthesis material technology have accelerated in recent years, the encounter with the CAD / CAM technology of the dental and dental technology is transforming into the reality technology of the convergent evolution beyond the test technology. Currently, various solutions and dental-only scanners are actively competing in the market.

On the other hand, three-dimensional scanners can be classified into laser system and camera system, laser system can scan objects by point projection and beam projection measurement method, and camera system can scan objects by arc projection and area measurement method. have.

These 3D scanners are attracting attention because they can measure objects at high speed, enable precise measurement of flexible products, enable CAD for various purposes, and realize accurate shape. However, there is a problem that the 3D scanner is much smaller than the contact type or the coordinate measuring machine (Coordinate Measuring Machine) in terms of measurement precision, and data post-processing is required in the overlapping shape between measurement areas. There is a problem in that an error occurs when acquiring and the processing speed is delayed.

Among the methods of measuring objects using a three-dimensional scanner, a plurality of scanned images are merged by shooting an object at various angles and then printing matching points of each scan with a software. This method has a limitation in acquiring a precise three-dimensional image due to a difference between combined images according to the skill of a user, and it takes a considerable amount of time to perform a merge operation.

Due to the many research and development efforts to increase the 3D image processing speed of the 3D scanner, the 3D image processing speed has recently been pulled up to several minutes. However, In the situation where it is necessary to acquire a fast result, it is evaluated that the time required to acquire the 3D image at the current level is not satisfactory.

Patent Document 1: Korean Patent Laid-Open Publication No. 10-2011-0082759

The present invention provides a three-dimensional scanner capable of solving a problem of generation of an image error and a data processing time delay which occur when a subject is divided into regions and photographed according to regions and synthesized in a three-dimensional image of a subject.

A three-dimensional scanner according to an embodiment of the present invention includes: a lens unit having a 360 degree angle of view and having a reflection plate; And an image processing unit for receiving a pattern image from a subject irradiated with a pattern and generating a three-dimensional image of the subject based on the pattern image.

Also, the lens unit of the three-dimensional scanner according to another embodiment of the present invention may provide a three-dimensional scanner including an aspherical lens that is any one of a omnidirectional lens, a mirror-type lens, and a fish-eye lens.

According to still another aspect of the present invention, there is provided a three-dimensional scanner including a pattern generator for generating the pattern and irradiating the pattern with the object.

The pattern generator of the three-dimensional scanner according to another embodiment of the present invention may also provide a three-dimensional scanner including a micromirror that rotates in at least one of a horizontal axis and a vertical axis.

The pattern generator of the three-dimensional scanner according to another embodiment of the present invention may further include: a light source; A lens having a different radius of a vertical axis and a horizontal axis for converting light from the light source into line light; And a micromirror that reflects the line light from the lens having the radius of the vertical axis and the radius of the horizontal axis to the subject.

The pattern generator of the three-dimensional scanner according to another embodiment of the present invention may further include: a light source; A structured light pattern lens for converting light from the light source into light of a predetermined structure and outputting the light; And a micromirror that reflects light from the structured light pattern lens to the subject.

In addition, the three-dimensional scanner according to another embodiment of the present invention may provide a three-dimensional scanner in which the pattern irradiation time from the pattern generator and the image receiving time of the image receiving unit are synchronized with each other.

According to another aspect of the present invention, there is provided a three-dimensional scanner, wherein the lens unit of the three-dimensional scanner is inserted into the oral cavity and the image processing unit generates a three-dimensional image of the oral cavity.

According to still another aspect of the present invention, the pattern generator of the three-dimensional scanner further includes a control unit for controlling driving of the light source, wherein the control unit controls the driving time and the driving period of the light source, And the thickness of each of the line patterns is adjusted according to the driving time and the driving period.

According to another aspect of the present invention, the image receiving unit of the three-dimensional scanner further comprises a display unit for generating a three-dimensional image of the oral cavity and dividing and displaying the two-dimensional image, You may.

According to still another aspect of the present invention, there is provided an artificial tooth processing apparatus comprising: a data conversion apparatus for converting digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting the same into a milling strip; And a milling device for generating an artificial tooth based on the milling strip received from the data conversion device.

According to another embodiment of the present invention, there is provided an artificial tooth processing apparatus comprising: a data conversion device for converting digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting it into a three-dimensional printing strip; And a three-dimensional printer for generating an artificial tooth based on the three-dimensional printing strip received from the data conversion apparatus.

According to still another aspect of the present invention, the image receiving unit of the three-dimensional scanner further includes a tooth receiving unit for receiving a tooth image including the size and position information of each of the upper and lower teeth, the distance between the teeth, A three-dimensional scanner for detecting and displaying a parameter may be provided.

The lens of the three-dimensional scanner according to the embodiment of the present invention is constituted by an aspheric lens having a 360 degree angle of view, thereby eliminating the possibility of the surface area of the subject which is not measured in the image receiving unit, Since the 3D image can be generated, the resolution and the resolution can be greatly increased by improving the accuracy and quality of the 3D image.

Further, since the lens of the three-dimensional scanner according to the embodiment of the present invention is constituted by the lens having the angle of view of 360 degrees, the whole area of the subject can be photographed at a time, so that the error due to the combination of the partial area image of the subject and the increase And it is possible to quickly generate a three-dimensional image by minimizing the data processing time required according to the combination of images.

Further, the embodiment of the present invention minimizes the number of times of photographing of the subject, thereby improving the work efficiency of the operator. When the embodiment of the present invention is used for medical treatment, the patient and the surgeon The satisfaction can be greatly increased.

In addition, the embodiment of the present invention minimizes the number of times of photographing of a subject and reduces the accuracy of a three-dimensional image due to a deviation between a plurality of photographed images due to artificial vibration such as hand tremor or mechanical vibration Can be solved.

In addition, by receiving the retroreflected light of the mirror through the omnidirectional lens, it is possible to photograph all the inner and outer regions of the entire dentition without missing teeth.

1 is a block diagram of a three-dimensional scanner according to an embodiment of the present invention;
2 illustrates a three-dimensional scanner according to another embodiment of the present invention.
Figs. 3A and 3B are block diagrams of a pattern generator. Fig.
Figs. 4 and 5 are diagrams for explaining a mode in which a line pattern reflected from a micromirror is irradiated to a subject. Fig.
6 is a view for explaining a direction of a line pattern according to a 90-degree rotation of a micromirror;
FIG. 7 illustrates a three-dimensional scanner according to another embodiment of the present invention. FIG.
8 is a view showing a case where a part of a region of a three-dimensional scanner according to another embodiment of the present invention is inserted into the oral cavity.
9 is a view showing a light receiving position according to a curvature of a lens of an omnidirectional lens having an angle of view of 360 degrees.
10 is a block diagram of an artificial tooth processing apparatus having a three-dimensional scanner according to an embodiment of the present invention.
11 is a sectional view of a omnidirectional lens according to an embodiment of the present invention.
12 and 13 are sectional views of omnidirectional lenses according to another embodiment;
14 and 15 are views showing a mandible image taken by the image receiving unit.
16 is a view of a mandible arch.
17 is a view showing an angle of a mandibular arch.
Fig. 18 is a view showing the dentition nodule according to each type. Fig.
19 is a view showing distances between maxillary and mandibular teeth;
20 is a longitudinal sectional view of a dental arch;
FIG. 21 is a view showing the shape of a Monson's sphere and a motor dental arch and a cusp angle; FIG.
Figures 22 and 23 are views showing the shape and size of the clinical crown of the mandibular molar.

Hereinafter, a detailed description will be given with reference to drawings of a three-dimensional scanner according to an embodiment of the present invention. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the size and thickness of an apparatus may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. However, it should be understood that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The dimensions and relative sizes of the layers and regions in the figures may be exaggerated for clarity of illustration.

The terminology used herein is for the purpose of describing embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprise "and / or" comprising ", as used in the specification, means that the presence of stated elements, Or additions.

1 is a block diagram of a three-dimensional scanner according to an embodiment of the present invention.

Referring to FIG. 1, a 3D scanner 10 according to an embodiment of the present invention may include an image receiving unit 100 and a pattern generator 200.

The controller 300 may be a separate module from the three-dimensional scanner 10 and may be a three-dimensional scanner 10 ) In a wired and / or wireless manner.

In addition, the pattern generator 200 may be configured as a separate module from the image receiving unit 100, and may be configured as a single module.

The image receiving unit 100 can take a subject S on which a pattern generated from the pattern generator 200 is irradiated.

That is, the pattern output from the pattern generator 200 is irradiated to the surface of the subject S, and the pattern image can be input to the image receiving unit 100.

The image receiving unit 100 may receive a pattern image and generate a three-dimensional image.

The image receiving unit 100 may capture a subject S sequentially irradiated with a pattern from the pattern generator 200 to generate a three-dimensional image.

The image receiving unit 100 and the pattern generator 200 may be fabricated as an integrated module and may be assembled separately from each other.

Also, the image receiving unit 100 and the pattern generator 200 can perform wired and / or wireless communication with each other.

The image receiving unit 100 may include a first lens unit 110 and an image processing unit 130. The image receiving unit 100 may further include a lens array unit 120.

The first lens unit 110 may include a lens 111 having a 360 degree angle of view and the lens 111 having a 360 degree angle of view may be any one of an omnidirectional lens, .

The first lens unit 110 may be variously configured according to the design of the optical system. For example, the first lens unit 110 may be composed of only the lens 111 having a 360 degree angle of view, or may be composed of a lens 111 having a 360 degree angle of view and an additional optical system.

The lens having the angle of view of 360 degrees is an aspherical lens which is formed by not only the area S1 of the subject S corresponding to the front face of the aspherical lens but also the area of the subject S corresponding to the side circumference of the aspheric lens, The region S3 of the subject S corresponding to the region higher than the position of the aspherical lens can be photographed.

Since the entire image of the subject S can be acquired from the lens 111 having the 360 degree angle of view, the process of combining the partial regions of the subject S can be minimized, The resolution of the three-dimensional image can be greatly increased.

The image processing unit 130 may receive the light received from the lens array unit 120 and form a three-dimensional image.

The image processing unit 130 may include an image pickup device 131 and a printed circuit board 132.

The image pickup element 131 may be a light receiving element such as a complementary metal-oxide semiconductor (CMOS), a charge coupled device (CCD), or a position sensitive device (PSD).

The image pickup device 131 can be mounted on the printed circuit board 132. [ Passive elements and active elements, which are not shown, may be mounted on the printed circuit board 132 together to transmit the image information acquired by the image pickup element 131 to the control device 300. [

The image receiving unit 100 may be housed in one case. The size of the case can be determined according to the use of the three-dimensional scanner 10.

That is, in the case of photographing a small-sized subject S or applying the embodiment of the present invention for medical use (for example, oral scan), the case may have a size that is easy for the user to mount, The image receiving unit 100 may be housed in a larger case when photographing a relatively large sized subject S such as a specific object in the space (e.g., face recognition). In this case, the configuration of the image receiving unit 100 But the present invention is not limited thereto.

In addition, the case may have a shape of a gun type, a handle type, a pen type, and the case is a handle type, more specifically, a power grip type type, and grooming brush type. However, the present invention is not limited thereto, and any size and shape can be used so that the user can hold the case. However, the present invention is not limited thereto, and the image receiving unit 100 may be formed by combining a case for housing the lens unit 110, a case for housing the lens array unit 120, and a case for housing the image processing unit 130 It is possible.

In addition, the case may be provided with a display device to display a two-dimensional or three-dimensional image display in which the image received by the image receiving unit 100 is image-processed, and a moving image.

Also, the display device can display the three-dimensional images of the subject S generated from the three-dimensional scanner 10 by dividing the divided images. For example, the curved image photographed from the aspherical lens 111 may be converted into a plane, and the curved image may be divided into a plurality of images.

Also, the display device may divide and display the three-dimensional image of the oral cavity generated by the image receiving unit 100 into two-dimensional images.

Also, the image receiving unit 100 may display the generated three-dimensional model image and the photographed image through a display device.

Further, the display device is not limited to being installed in the three-dimensional scanner 10, and may be an external device that receives a three-dimensional image from the three-dimensional scanner 10.

Also, the case may be provided with input means, and at least one of the image receiving unit 100, the pattern generator 200, and the controller 300 may perform predetermined operations when the user transmits a command signal through the input means. The input means may be a physical button or a touch input means for recognizing a touch. However, the present invention is not limited to the case where the input means is installed in the case, and the input means may be an external device physically separated from the mouth scanner 10, for example, such as a panel, for transmitting a command signal of the user to the oral scanner 10, .

An embodiment of the present invention can irradiate the oral cavity with a pattern and take a pattern image. For example, the pattern generated from the pattern generator 200 is irradiated to the oral cavity, and the first lens unit 110 is inserted into the oral cavity to take a pattern image of the oral cavity. However, the embodiment of the present invention is not limited to the photographing of the pattern image of the oral cavity, but it is also possible to take a pattern image irradiated on a body part of a person or various objects of a person such as a gesture of a test object or a human such as a semiconductor, Thereby generating a three-dimensional image.

The three-dimensional scanner 10 according to the embodiment of the present invention can obtain a three-dimensional image using a triangulation technique. More specifically, the pattern irradiated from the pattern generator 200 is irradiated onto the subject S, and the light reflected from the subject S is input to the image receiving unit 100. The distance information between the pattern generator 200 and the image receiving unit 100 and the angle information of the image receiving unit 100 and the angle information of the pattern generator 200 obtained in the field of view of the image receiving unit 100, Dimensional information of the subject S through triangulation using the triangle formed from the receiving unit 100, the pattern generator 200, and the point where the light meets the subject S.

In the conventional triangulation method, in order to solve the possibility that the target surface is not measured by the camera, an attempt has been made to reduce the angle of the triangulation as much as possible, but there has been a limit because the accuracy of the triangulation is decreased. However, since the lens unit 110 of the embodiment of the present invention is composed of an aspherical lens having a 360-degree angle of view to eliminate the possibility of the surface area of the subject S that is not measured by the image receiving unit 100, The accuracy of the three-dimensional image can be greatly increased.

2 is a view showing a three-dimensional scanner according to another embodiment of the present invention.

In the following description of the embodiment according to FIG. 2, the same reference numerals are assigned to the same components as those of the other embodiments, and a detailed description of common functions and effects thereof is omitted.

2, an image receiving unit 100 according to another embodiment may include a lens unit 110, a lens array unit 120, an image processing unit 130, and a reflection member 140. [

The lens unit 110 may be positioned perpendicular to the optical axis of the lens array unit 120.

The reflection member 140 reflects light passing through the lens unit 110 and can transmit the light to the lens array unit 120.

A reflective member 140 is provided to allow the lens unit 110 to be inserted into a narrow space so that the user can take a picture in a narrow space. The narrow space here may be, for example, oral cavity, but is not limited thereto.

For example, when the image processing unit 130 is disposed perpendicularly to the optical axis of the lens unit 110, the image processing unit 130 may be mounted on the lens unit 110, A reflection member 140 may be disposed between the image processing unit 130 and the image processing unit 130 so that light passing through the lens unit 110 may be reflected by the reflection member and transmitted to the image processing unit 130.

3A and 3B are block diagrams of a pattern generator. 4 and 5 are views for explaining a mode in which a line pattern reflected from the micromirror is irradiated to a subject. And FIG. 6 is a view for explaining the direction of the line pattern according to the 90-degree rotation of the micromirror.

3 to 5, the pattern generator 200 may include a light source unit 210, a second lens unit 220, a mirror unit 230, and a control unit 240.

The light source unit 210 may include a light source 211.

The light source 211 may be any one of a light emitting diode and a laser diode. However, the light source 211 is not limited thereto, and any light source capable of generating and outputting light may constitute an embodiment of the present invention.

The light source unit 210 may control the driving of the light source 211 and the driving time based on the light source control signal from the control unit 240. For example, the control unit 240 may transmit the pulse modulation signal to the light source unit 210. The light source unit 210 turns on the light source 211 when the pulse modulation signal is at a high level and outputs the light source 211 when the pulse modulation signal is at a low level Can be turned off. The light source unit 210 may also maintain the turn-on of the light source 211 while the pulse modulation signal remains at the high level and maintain the turn-off of the light source 211 while the pulse modulation signal remains at the low level .

As described above, the thicknesses of the line patterns constituting the pattern irradiated onto the subject S by the pulse modulation signal and the distances between them can be adjusted.

The light output from the light source unit 210 may be irradiated to the mirror unit 230 through the second lens unit 220.

On the other hand, the wavelength band of the light output from the light source 210 may be a visible ray or an infrared ray, but is not limited thereto. For example, red light, green light, and blue light source elements, or may be configured to irradiate light of a single wavelength, and may be configured to irradiate linear laser light.

The second lens unit 220 may receive the light output from the light source unit 210 and output line light.

An embodiment in which the second lens unit 220 outputs line light will be described.

Referring to FIG. 3A, the second lens unit 220 may include a lens 221 having a radius of a vertical axis and a radius of a horizontal axis different from each other. An example of a lens in which the radii of the vertical axis and the horizontal axis are different from each other may be a cylinder lens.

The cylinder lens 221 may have a semi-cylindrical shape, for example. Therefore, the incident surface of the cylinder lens 221 that receives light from the light source 210 is non-curved, and the exit surface of the cylinder lens 221 that emits the received light may be a curved surface. The light received by the incident surface of the cylinder lens 221 can be output in the form of a line through the exit surface. The line light output from the cylinder lens 221 may be irradiated to the mirror portion 230. [

Further, the second lens unit 220 converts the light output from the light source unit 210 into parallel light, and converts the parallel light into line light again.

The second lens unit 220 may include a parallel light conversion lens 222. The second lens unit 220 may include a parallel light conversion lens 222, have. The parallel light conversion lens 222 may be, for example, a collimating lens.

The collimating lens 222 can irradiate the light output from the light source unit 210 to the cylinder lens 221 by forming an optical path close to parallel.

Referring to FIG. 3B, the second lens unit 220 may include a collimator lens 224.

The collimator lens 224 can irradiate the micromirror 231 by adjusting the size of the received pattern light according to the size of the micromirror 231 to be described later. That is, the collimator lens 224 can match the size of the micromirror 231 and focus the received light on the micrometer 231.

The second lens unit 220 may include both the cylinder lens 221 and the collimator lens 224. In this case, the cylinder lens 221 may be disposed between the collimator lens 224 and the mirror unit 230 And the collimator lens 224 can be located along the optical axis between the cylinder lens 221 and the mirror portion 230 and along the optical axis between the collimator lens 224 and the mirror portion 230, And the mirror portion 230. [0050]

The mirror unit 230 can reflect the line light output from the lens unit 220 and irradiate the light onto the subject S.

The mirror portion 230 can be rotated with a rotation axis in the horizontal or vertical direction, that is, with a single degree of freedom, or with a rotation axis in the horizontal and vertical directions, that is, with two degrees of freedom.

When the mirror portion 230 has two degrees of freedom, the axes of the horizontal axis and the middle axis can be controlled simultaneously or independently of each other.

The mirror unit 230 may include a mirror control unit 232 for controlling the rotation of the micro mirror 231 and the micro mirror 231. However, the present invention is not limited thereto. The mirror control unit 232 may be configured separately from the mirror unit 230 or may be configured together with the control unit 240.

The micromirror can be manufactured by MEMS (Micro Electro Mechanical Systems) technology, but is not limited thereto.

The micromirror 231 may include a transverse axis support and a vertical axis support. The micro mirror 231 may rotate in the horizontal axis and the vertical axis under a control of the mirror controller 232, and may vertically rotate up and down. The light passing through the cylinder lens 221 on the path of the light from the light source unit 210 is condensed on the surface of the micromirror 231 and irradiated. (S).

More specifically, when the mirror control unit 232 rotates the micromirror 231 by N times in one second in the horizontal direction, 2N line patterns can be formed on the subject S. When the mirror control unit 232 rotates the micromirror 231 by M times in one second in the vertical axis direction, it is possible to project a screen at a frame rate of 2M.

Next, the image receiving unit 100 can receive the pattern image sequentially irradiated to the subject S.

Also, the irradiation time point of the patterned object S and the pattern image reception time point of the image receiving unit 100 may be synchronized with each other, and such synchronization may be performed by the control device 300. [

In this case, the pattern generated by the pattern generator 200 and irradiated onto the subject S may be distorted by the unevenness of the surface of the subject S, and the image receiving unit 100 may receive the pattern image including the pattern distortion information A three-dimensional image of the subject S can be generated.

The image receiving unit 100 or the control unit 300 may include a memory and the image receiving unit 100 sequentially receives the pattern image and stores the pattern image in the memory as a sequential pattern is irradiated onto the subject S . The image receiving unit 100 extracts data on three-dimensional coordinates based on the image information stored in the memory, and forms a wire frame to form a three-dimensional image. However, the present invention is not limited to this, image information stored in the memory may be transmitted to an external device, and a three-dimensional image of the subject S may be formed by an external device.

Referring to FIG. 6, the mirror control unit 232 may rotate the micro mirror 231 by 90 degrees. That is, the horizontal axis of the micro mirror 231 before the rotation of 90 degrees is rotated 90 degrees and then the vertical axis, and the vertical axis of the micro mirror 231 before the rotation of 90 degrees is rotated by 90 degrees.

In this case, the light converged on the micromirror 231 can form a vertical line pattern on the subject S, and when rotated along at least one of the longitudinal and transverse axes of the micromirror 231, A pattern can be formed on the subject S. [

On the other hand, light from the light source unit 210 may be directly irradiated to the micromirror 231.

In this case, the surface dimension of the micromirror 231 may be increased in proportion to the angle between the angle of the light path from the light source unit 210 and the distance from the micromirror 231 in order to reflect the light irradiated to the micromirror 231.

7 is a view illustrating a three-dimensional scanner according to another embodiment of the present invention.

Referring to FIG. 7, according to another embodiment, the second lens unit 220 may receive the output light from the light source unit 210 and output cross-shaped light or radial light.

The second lens unit 220 may include a structured illumination pattern lens 223 so that the second lens unit 220 outputs light having various shapes.

The second lens unit 220 may output light having various structures according to the shape of the structured light pattern lens so that the light of the corresponding shape is irradiated to the mirror unit 230.

The structure of the light output from the second lens unit 220 may vary depending on the degree of depth measurement, resolution, focus, and the like depending on the type of the subject S.

Meanwhile, the second lens unit 220 may be configured in various ways according to the design. For example, the second lens unit 220 may be composed of a cylinder lens 221, or may be composed of a structured optical pattern lens, and may include a cylinder lens 221 and an additional optical system, .

The three-dimensional image generated by the image receiving unit 100 may be displayed by a display device.

Also, the display device may be installed in at least one of the image receiving unit 100 and the pattern generator 200, but the present invention is not limited thereto and may be separately provided to receive and display a three-dimensional image from the image receiving unit 100 .

FIG. 8 is a view showing a case where a part of a region of a three-dimensional scanner according to another embodiment of the present invention is inserted into an oral cavity, FIG. 9 is a view showing a light receiving position according to a curvature of a lens of an omni- FIG.

Referring to FIG. 8, the 3D scanner 10 according to another embodiment of the present invention may include an image receiving unit 100, a pattern generator 200, a control device 300, and a mirror device 400.

The mirror device 400 may be positioned around the lens unit 110 of the image receiving unit 100. Also, the mirror device 400 may surround and surround the lens unit 110.

The mirror device 400 may be installed in the case 20 housing the image receiving unit 100 and may be disposed in the case 20 surrounding the lens unit 110.

In addition, the mirror device 400 may have a U-shape as a whole, but is not limited thereto.

Also, the mirror device 400 may be installed in the case in a detachable form in the case.

When the three-dimensional scanner 10 is used for oral imaging, at least one region of the first lens unit 110 of the image receiving unit 100, more specifically, the lens 111 having a 360 degree angle of view, And the mirror device 400 may be positioned outside the oral cavity and may reflect the light reflected from the outer surface of the mandible and / or the maxilla to transmit the light to the lens unit 110.

The pattern image reflected on the inner enamel area of the tooth, the upper area of the enamel of the tooth, and the area of the oral gingival area can be incident on the first omnidirectional area 111a of the omnidirectional lens 111, The pattern image of the second reflected area can be incident on the second omnidirectional area 111b of the mirror device 400 by reflection from the area including the outer enamel of the tooth and the outer gingival area of the oral cavity.

However, the present invention is not limited to this. Light reflected from the enamel region of the teeth may be incident on the first omnidirectional region 111a according to the curvature of the lens of the omnidirectional lens 111, The light from the oral cavity region that reflects light that does not reach the region 111a may be reflected back to the second omniazimuth region 111b.

On the other hand, the first omnidirectional region 111a shown in the figure is a region including the center region of the omnidirectional lens 111 exposed in the case 20, and the second omnidirectional region 111b includes the center region of the omnidirectional lens 111, For example, the second omnidirectional region 111b may be a region adjacent to the oral cavity of the oral cavity.

That is, the first omnidirectional region 111a is a region where reflected light enters when the mirror device 400 is not present, and the second omnidirectional region 111b is a region excluding the first omnidirectional region 111a An area in which light is not incident and can not be photographed in the area of the omnidirectional lens 111 can be utilized as the second omnidirectional area 111b.

Also, the image receiving unit 100 may sequentially perform the detection operation of the light coming from the first omni-directional region 111a and the detection of the light coming from the second omni-directional region 111b.

10 is a block diagram of an artificial tooth processing apparatus having a three-dimensional scanner according to an embodiment of the present invention.

Referring to FIG. 10, the artificial tooth processing apparatus 1 may include a three-dimensional scanner 10, a data conversion apparatus 13, and a milling apparatus 15.

The data conversion device 13 can receive image information that is three-dimensionally measured and converted into digital data by the three-dimensional scanner 10, and can convert the image information into three-dimensional data.

Further, the data conversion apparatus 13 may generate production data, convert it into a milling strip, and provide it to the milling apparatus 15.

CAD, or CAM based data conversion apparatus. However, the present invention is not limited to this, and any apparatus that can convert two-dimensional data into three-dimensional data is possible.

The milling device 15 can generate an artificial tooth using the milling strip received from the data conversion device 13. [

The milling device 15 is a two-axis milling device in which milling direction points are spatially determined in two directions, a three-axis milling device in which milling direction points are spatially determined in three directions, and a tension bridge A four-axis milling apparatus having a fourth axis capable of rotating in various ways, and a 5-axis milling apparatus having a fifth axis of a spindle rotatable in addition to the four-axis axis described above. However, the present invention is not limited thereto .

Further, the three-dimensional scanner 10, the data conversion device 13, and the milling device 15 can communicate with each other in a wired or wireless manner.

In addition, the artificial tooth processing apparatus 1 according to another embodiment of the present invention includes a data conversion apparatus (not shown) for converting digital data received from the three-dimensional scanner 10 into three-dimensional data to generate production data, And a three-dimensional printer for generating an artificial tooth on the basis of the three-dimensional printing strip received from the data conversion apparatus 13.

For example, wireless communication methods such as WLAN (Wireless LAN), Wi-Fi, Wibro, WiMAX, HSDPA, and Bluetooth It is possible to use wired communication methods such as Ethernet, xDSL (ADSL, VDSL), HFC (Hybrid Fiber Coaxial Cable), FTTC (Fiber to the Curb) and FTTH (Fiber To The Home) May be used. However, the present invention is not limited to this, and any communication method capable of data transmission is possible.

11 is a cross-sectional view of an omnidirectional lens according to an embodiment of the present invention.

Referring to FIG. 11, the omnidirectional lens 111, which is included in the lens unit 110 according to the embodiment of the present invention, may be an aspherical lens. The image pickup element 131 can receive an omnidirectional image from the omnidirectional lens 111. [

In a state where the omnidirectional lens 111 of the three-dimensional oral scanner 10 is inserted, for example, in the oral cavity, the image receiving unit 100 can photograph at least one of the upper and lower teeth.

The omnidirectional lens 111 may include a plurality of refracting surfaces and a plurality of reflective coating surfaces.

The omnidirectional lens 111 may include two refracting surfaces and two reflecting coated surfaces.

And may include a refractive portion 111c, a horizontal portion 113, a reflective coating 114, an inner depression 115, an inner refractive portion 116 and an inner reflective coating 117.

The reflective portion 111c may be formed to refract the incident light and the horizontal portion 113 may be formed horizontally at the end of the refraction portion 111. The reflective coating 114 may be formed on the horizontal portion 113, The reflective coating 114 may reflect incident light reflected from the inner reflective coating 117 to provide incident light to the inner recess 115. The inner recess 115 may reflect the reflective coating 114 The inner reflection coating 117 is formed on the inner refraction portion 116 so that incident light incident from the refraction portion can be reflected by the reflection coating.

The omnidirectional lens 111 itself is formed as a spherical surface rather than an aspherical surface, thereby enhancing the ease of machining and reducing the manufacturing cost.

In addition, the refracting portion 111c, the inner concave portion 115, and the inner refracting portion 116 are formed into spherical surfaces, so that it is possible to perform the omnidirectional photographing while solving the problem of difficult machining at the time of aspherical surface.

The inclination of the inner refracting portion 116 may be steeper than the inclination of the refracting portion 111 based on the imaginary central axis CL of the omnidirectional lens 111. [

The inner concave portion 115 may also be formed to focus.

A reflection plate may be provided on the reflection coating 114 of the omnidirectional lens 111.

Also, a reflection plate may be provided on the surface of the omnidirectional lens 111 corresponding to the reflection coating 114 without reflection coating.

12 and 13 are sectional views of the omnidirectional lens according to another embodiment.

12 and 13, an example of the omnidirectional lens 111 according to another embodiment of the present invention will be described. In the omnidirectional lens 111, a first convex incidence surface 111d is formed on one surface, A first exit surface 111e is formed and a first lens 111x having a first reflection surface 111f is formed at the center of the first incident surface 111d and a second incident surface 111g is formed on a surface of the first lens 111x And a second lens 111y having a convex second reflecting surface 111h formed on the other surface and a second emitting surface 111i formed at the center of the second reflecting surface 111h.

The light ray incident through the first incident surface 111d is reflected by the second reflection surface 111h through the joining surface of the first emission surface 111e and the second incident surface 111g and is reflected by the second reflection surface 111h Is reflected by the first reflecting surface 111f via the joining surfaces of the first emitting surface 111e and the second emitting surface 111g and then reflected by the first emitting surface 111e and the second incident surface 111g, The light can be emitted through the second emission surface 111i through the junction surface of the first emission surface 111g.

The first lens 111x and the second lens 111y are reflection refracting lenses that use reflection and refraction of light rays and can acquire a 360 degree omni-directional image through the first lens 111x and the second lens 111y have.

It is preferable that the first reflective surface 111f and the second reflective surface 111h are coated with a material capable of reflecting visible light such as aluminum or silver. In addition, although the first reflecting surface 111f and the second emitting surface 111i are shown flat on the drawing, they may be convex or concave only in one embodiment.

The first lens 111x is a lens on which an external light beam is incident, and the first incident surface 111d is convex on one surface and an external light ray is incident on the first incident surface 111d. A first exit surface 111e is formed on the other surface of the first lens 111x so that light rays incident on the first incident surface 111d can be emitted to the first exit surface 111e. In addition, a first reflection surface 111f may be formed at the center of the first incident surface 111d.

The second lens 111y is a lens that is bonded to the first lens 111x and specifically a second incident surface 111g is formed on one surface of the second lens 111y, 1 emission surface 111e. A convex second reflecting surface 111h is formed on the other surface of the second lens 111y and a second reflecting surface 111h is formed in the center of the second reflecting surface 111h, The emitting surface 111i can be formed.

The light rays incident from the outside are refracted at a predetermined angle and gathered by forming the first incident surface 111d to be convex. For this reason, it is preferable that the diameter of the second lens 111y is smaller than the diameter of the first lens 111x.

In addition, the joining surfaces of the first emitting surface 111e and the second emitting surface 111g are formed not to be flat, but may be formed so as to correspond to each other, and then they may be bonded to each other in close contact with each other.

11 to 13 illustrate the structure of the omnidirectional lens 111, the omnidirectional lens 111 according to the embodiment of the present invention is not limited thereto.

14 and 15 are views showing a mandible image photographed by the image receiving unit.

14 and 15, in the embodiment of the present invention, since the whole area of the teeth can be photographed by one shot without the need to synthesize a plurality of photographed images photographed a plurality of times for each area of a tooth, It is possible to shorten the time taken to take a tooth, thereby greatly reducing the time required for serious examination and examination.

According to the above-described embodiment of the present invention, in the case of the conventional pattern projection method, a pattern image is photographed for each partial region of the subject S and synthesized into a whole image. However, when a plurality of shape images are collected to generate a three-dimensional image of the entire structure, there is a problem that the accuracy of the three-dimensional image is greatly reduced due to accumulated errors due to the combination of images. In addition, there is a problem that data processing speed when combining images of a plurality of shapes increases. However, since the three-dimensional scanner 10 according to the embodiment of the present invention uses the lens 111 having a 360 degree angle of view, it is possible to acquire an integral image of the subject S at a time, It is possible to solve the delay time problem. In addition, in the case of a subject S having a very complicated structure such as oral cavity, the effect of the embodiment of the present invention can be further maximized. In addition, considering the fact that the above-described problem becomes more serious in the process of photographing a partial area of a subject S having a large change in a very small area such as a tooth shape of the oral cavity and synthesizing the partial area, The effect of the embodiment of the present invention can be further maximized when a three-dimensional image of a subject is generated.

FIG. 16 is a view showing a mandible arch, FIG. 17 is a view showing an angle of a mandible, FIG. 18 is a view showing a dental arch of each form, FIG. 19 is a view showing a distance between maxillary and mandibular teeth FIG. 20 is a view showing the long diameter of the dental arch, FIG. 21 is a view showing the shape and crown angle of the Monson and hammer teeth, and FIGS. 22 and 23 are views showing the shape and size of the mandibular molar clinical crown.

The image receiving unit 100 of the three-dimensional oral scanner 10 according to the embodiment of the present invention can precisely measure the distance between each of the teeth and the maxilla and mandible and the teeth based on the three-dimensional image. In addition, the control device 300 receiving the image data from the image receiving unit 100 may precisely measure the distance between each of the maxilla and mandible, the teeth, and the teeth.

More specifically, in the three-dimensional oral scanner 10 according to the embodiment of the present invention, the canine height (CH), which is the distance from the center of gravity of the right and left central incisors to the point at which the right and left canines meet, have. In addition, it is possible to measure the second molar height (M2H), which is the distance from the center point between the left and right incisors to the point where the second molar centrifugal angular contact pendulum meets the reference line, and the canine width CW) can be measured and the first molar width M1W as the distance between the left and right first molar mesial buccal limbs can be measured and the second molar width between the right and left second molar canals M2W) can be measured. Intercanine distance, canine-labial height of cotury, distance between the first molar and intercaneal distance of the lingual cusps, bilateral lingual cusp of the second molar, The distance between the lateral ridges, the distance between the hamular notch and the incidive papilla, the distance between the incidive papilla and the central inciaor innervation papilla, the incidive papilla, and the intercanine Iine (CI - LV) is the vertical distance from the central incisor to the labial vestibule, and the vertical distance from the central incisor to the labial vestibule Distance, vertical distance from buccal vestibule to buccal vestibule, vertical distance from Hamular notch to Occlusal plane, occlusal plane from Palatal vault The vertical distance can be measured. 19, the distance between the two canine tooth tips shown in FIG. 19, the distance between the first molar teeth of the first molar of FIG. 19, the first premolar contact bridge of FIG. 19, the second molar bridge of FIG. Precise measurement of the pontoon, the length of the dental arch, the length of the crown, the length of the root, the root of the crown, the root of the cervical spine, the sagittal plane of the crown, the sagittal plane of the cervical spine, can do.

In addition, the average of the angles of egi of the left canine angle LCA, the angle of ace of the right canine angle RCA, the angle of ceg of the central incisor angle IA, and the sum of the left and right canine angles of the canine angle CA the angle of ace + the angle of egi) / 2 can be precisely measured.

Further, the image receiving unit 100 displays a precise calculation result of the oral structure such as the size and position information of each of the maxilla, mandible, and teeth, the distance between the teeth, and the angle information of the teeth according to the algorithm already stored, It can also be displayed via a device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: Artificial tooth processing device
10: 3D Scanner
13: Data conversion device
15: Milling device
100:
110:
111: Lenses with 360 degree angle of view
111a: first omnidirectional area
111b: the second omnidirectional area
111c:
113:
114: Reflective coating
115: inner concave portion
116: inner refraction portion
117: Inner reflective coating
111d: first incident surface
111e: first emitting surface
111f: first reflection surface
111x: first lens
111g: second incident surface
111h: second reflection surface
111i: 2nd emission surface
111y: second lens
120: Lens array part
130:
131:
132: printed circuit board
140: reflective member
200: Pattern generator
210:
220: second lens portion
221: Cylinder lens
222: parallel light conversion lens
230: mirror part
231: Micro mirror
232: mirror control unit
240:
300: Control device
400: Mirror device

Claims (19)

A lens unit having a reflection angle of 360 degrees; And
And an image processing unit for receiving the pattern image from the pattern-inspected object and generating a three-dimensional image of the object based on the pattern image,
3D Scanner. The method according to claim 1,
The lens unit
An aspherical lens which is any one of an omnidirectional lens, a mirror-type lens and a fisheye lens,
3D Scanner. The method according to claim 1,
And a pattern generator for generating the pattern and irradiating the pattern with the object
3D Scanner. The method of claim 3,
The pattern generator includes:
And a micromirror which rotates in at least one of a horizontal axis and a vertical axis
3D Scanner. The method of claim 3,
The pattern generator includes:
Light source;
A lens having a different radius of a vertical axis and a horizontal axis for converting light from the light source into line light; And
And a micromirror for reflecting the line light from the lens having the radius of the vertical axis and the radius of the horizontal axis different from each other to the subject
3D Scanner. The method of claim 3,
The pattern generator includes:
Light source;
A structured light pattern lens for converting light from the light source into light of a predetermined structure and outputting the light;
And a micromirror that reflects light from the structured light pattern lens to the subject
3D Scanner. The method of claim 3,
A pattern irradiation time point from the pattern generator to the subject,
The image receiving points of the image receiving unit are synchronized with each other
3D Scanner. 7. A method according to any one of claims 1, 4, 5, and 6,
The lens portion is inserted into the oral cavity
The image processing unit generates a three-dimensional image of the oral cavity
3D Scanner. 7. The method according to any one of claims 5 to 6,
The pattern generator includes:
And a control unit for controlling driving of the light source,
The control unit controls the driving time and the driving period of the light source
The interval between the line patterns irradiated to the subject and the thickness of each of the line patterns are adjusted according to the driving time and the driving period of the light source
3D Scanner. 8. A method according to any one of claims 1 to 7
The image receiving unit generates a three-dimensional image of the oral cavity,
And a display unit for dividing and displaying an image photographed in two dimensions
3D Scanner. The method of claim 8, wherein
The image receiving unit generates a three-dimensional image of the oral cavity,
And a display unit for dividing and displaying an image photographed in two dimensions
3D Scanner. The method of claim 9, wherein
The image receiving unit generates a three-dimensional image of the oral cavity,
And a display unit for dividing and displaying an image photographed in two dimensions
3D Scanner. A three-dimensional scanner according to any one of claims 1 to 7;
A data conversion device for converting the digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting the generated production data into a milling strip; And
And a milling device for generating an artificial tooth based on the milling strip received from the data conversion device
Artificial tooth processing equipment. A three-dimensional scanner according to claim 8;
A data conversion device for converting the digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting the generated production data into a milling strip; And
And a milling device for generating an artificial tooth based on the milling strip received from the data conversion device
Artificial tooth processing equipment.
A three-dimensional scanner according to claim 9;
A data conversion device for converting the digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting the generated production data into a milling strip; And
And a milling device for generating an artificial tooth based on the milling strip received from the data conversion device
Artificial tooth processing equipment. A three-dimensional scanner according to any one of claims 1 to 7;
A data conversion device for converting the digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting the generated production data into a three-dimensional printing strip; And
And a three-dimensional printer for generating an artificial tooth based on the three-dimensional printing strip received from the data conversion apparatus
Artificial tooth processing equipment. A three-dimensional scanner according to claim 8;
A data conversion device for converting the digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting the generated production data into a three-dimensional printing strip; And
And a three-dimensional printer for generating an artificial tooth based on the three-dimensional printing strip received from the data conversion apparatus
Artificial tooth processing equipment. A three-dimensional scanner according to claim 9;
A data conversion device for converting the digital data received from the three-dimensional scanner into three-dimensional data to generate production data and converting the generated production data into a three-dimensional printing strip; And
And a three-dimensional printer for generating an artificial tooth based on the three-dimensional printing strip received from the data conversion apparatus
Artificial tooth processing equipment. The method according to claim 1,
Wherein the image receiver comprises:
Based on the photographed image, tooth parameters including the size and position information of each of the maxilla, mandible, and teeth, the distance between the teeth, and the angle information of the teeth are detected and displayed
3D Scanner.

Images