TW201320974A - Device and method of scanning teeth mold having multiple light sources - Google Patents

Abstract

The invention relates to a device and a method of scanning teeth mold with multiple light sources. The device includes a carrier, a calibration board, a first light source module, a first image capturing module, a second light source module and a second image capturing module. The carrier includes a moving mechanism, a vertical rotation mechanism, a horizontal rotation mechanism and a teeth mold fixture. The method includes an initial calibration procedure, a rough scanning procedure, a precise scanning procedure and a repeating computation procedure. The initial calibration procedure includes an origin returning step, a calibration board sampling step, a three dimension module sampling step, a calibration processing step and an initial teeth mold file inputting step. The rough scanning procedure includes a placing step, a rough scanning step and a combination step. The precise scanning procedure includes a sampling step, an analyzing step and an integration step. Thereby, a three dimension teeth mold can be precisely and quickly prepared.

Description

Multi-source dental model scanning device and method thereof

The present invention relates to a device for three-dimensional scanning of a tooth mold and a method for scanning a tooth mold, and more particularly to a multi-source tooth mold scanning device and method thereof.

The traditional way of making dentures is to use a division of dentists and dental technicians. The dentist first prints the female mold from the patient, and sends the female mold to the dental mold technician. The dental mold technician is based on the dental mold. After the mold is turned into a gypsum male mold, and the gypsum male mold is processed and trimmed, and then the second mold, trimming, occlusion, etc. are processed, the denture can be sent to the dentist, and the dentist can then insert the denture into the patient's mouth. At the same time, the occlusion test and other details can be trimmed to allow the patient to use the denture.

In the work of trimming the plaster male mold, the shape is trimmed according to the experience of the dental mold technician, but after all, the dental mold technician can only judge the shape from the negative mold, and when the obtained data is limited, it is easy to produce some slight error. In order to improve the above-mentioned defects, with the development of technology, there is a technique of three-dimensional scanning of a tooth mold, such as the existing tooth profile scanning device disclosed in the TW certificate number No. I230051, which has a scanning probe which is arranged in parallel. And adjacent to the tooth fixture and the full mold fixture, limited by the position of the three-dimensional space and the shielding of the peripheral equipment, it is easy to produce a dead angle in the process of scanning, and can not obtain a complete three-dimensional tooth profile image; In the process of the image, the scanning probe will use the laser beam to illuminate the tooth fixture and the full mold fixture. The existing tooth pattern scanning device scans the surface of the object one by one with the laser light, so the image capturing process must wait for all the scanning to be completed. Imaging, the speed of image capture will affect the subsequent work.

In order to solve the above problems of the conventional three-dimensional tooth mold scanning speed and the occurrence of blind spots, the main object of the present invention is to provide a multi-source tooth mold scanning device and a method thereof.

The technical means used in the present invention is to provide a multi-source dental model scanning device, comprising: a carrier comprising a displacement mechanism, comprising a loading platform and a mobile platform, the loading platform is movably mounted Provided on the moving platform; a vertical rotating mechanism is mounted on the stage, the vertical rotating mechanism is rotatable relative to the stage with the X axis as a rotating shaft; a horizontal rotating mechanism is attached Provided in the vertical rotation mechanism, the horizontal rotation mechanism is rotatable relative to the vertical rotation mechanism with the Z axis as a rotation axis; and a dental mold fixture mounted on the horizontal rotation mechanism for carrying a tooth a calibration plate spanning the mobile platform and the displacement mechanism can carry the carrier and move to the calibration plate; a first light source module mounted on the mobile platform The first light source module includes a first light source emitter to project a light beam on the calibration plate above the mobile platform; a first image capturing module is mounted on the side of the mobile platform. Above the vehicle and located at The first image capturing module is provided with a first image capturing lens; a second light source module is disposed above the correcting plate and is located above the moving platform relative to the first The second light source module includes a first projection portion and a second projection portion, and the first projection portion and the second projection portion respectively project a light beam, and the first projection portion The projected beam is parallel to the beam projected by the second projection; and a second image capturing module is located above the calibration plate and adjacent to the second light source module, the second image capturing module There is a second camera lens.

The multi-source dental model scanning device as described above, wherein the first projection portion of the second light source module is a beam splitter and the second projection portion is a total reflection mirror, and the second The light source module is provided with a second light source emitter, the splitter mirror is located on the illumination path of the second light source emitter, the total reflection mirror is located adjacent to the beam splitter, and the second light source emitter emits one A beam of light passes through the beam splitter and is partially reflected to the total reflection mirror to produce two parallel beams.

A multi-source dental impression scanning device as described above, wherein the beam splitter has a transmittance of 50% and a reflectance of 50% for a light beam having a wavelength of 670 nm.

The technical method used by the present invention provides a multi-source dental model scanning method, comprising: an initial calibration process, which includes an origin return step, which resets a carrier and a first light source module to an initial position. a calibration plate sampling step of projecting a light beam onto a calibration plate by using a first light source module and scanning a plurality of calibration points on the calibration plate by using a first image capturing module to sample the image of the calibration plate And a calibration step of the three-dimensional module, wherein a first projection portion and a second projection portion of the second light source module respectively project parallel two beams of light into a standard module and utilize a second image capturing module The group scans the standard module to sample and correct the space coordinates of the standard module; a calibration processing step is based on the image of the calibration plate and the space coordinate analysis of the standard module to process the plurality of correction information; An initial dental model file step of importing a stereoscopic range of initial dental volume files to plan a scan path; a rough scanning process using the first The source module and the first image capturing module perform preliminary scanning, and the rough scanning process includes a placing step of placing a dental mold to be scanned on the dental mold fixture and moving the dental mold fixture to a calibration step, wherein the first light source module projects a light beam on the dental mold to be scanned, and the first image capturing module scans the dental mold to be scanned, and the dental mold is processed. The normal and negative ninety degree angles in the opposite direction with the normal line are respectively taken for a plurality of times, and the plurality of rough scan files are generated according to the content of the plurality of shots; and a combining step is to perform the plurality of rough scans The file is attached to a viewable three-dimensional rough scan file; an accurate scanning process is performed by using the second light source module and the second image capturing module to perform accurate scanning, and the precise scanning process includes a sampling step. The first image capturing portion and the second projecting portion of the second light source module respectively project parallel two beams of light to the dental mold to be scanned, and the second image capturing module is for the tooth to be scanned. a section of a selected tooth in the mold Performing a sample scan and calculating a vector value of the image capture scan; an analysis step of analyzing the vector value of the image capture scan and the complex correction information and generating a plurality of point cloud data; an integration step, which is The plurality of point cloud data is reconstructed and integrated into a viewable three-dimensional accurate file; and a repeated calculation process is to determine whether all the teeth of the dental mold pass the precise scanning step, and if not, repeat the precision The scanning step until all the teeth of the dental mold pass the precise scanning step.

The multi-source dental model image capturing scanning method as described above, wherein the plurality of correction information includes average precision information, standard calibration point information, and mode orientation difference information, and the average precision information is used to reconstruct the Y-axis and the Z-axis. A calibration error point on the average error of the axis. The standard calibration point information is used to reconstruct the standard deviation error of the standard calibration point of the Y-axis and the Z-axis. The mode orientation difference information is used to measure the calibration mode with the Y-axis and the Z-axis. The direction of motion is poor between the pixels of the orientation.

The multi-source dental model image capturing scanning method as described above, wherein the rough scanning step of the rough scanning process is an angle of plus or minus ninety degrees per 25 degrees of the opposite direction centered on the normal of the dental mold fixture A shooting is performed to provide the bonding step to fit the three-dimensional rough scan file.

The multi-source dental model scanning device of the present invention has the following enhancements:

1. The vertical rotation mechanism and the horizontal rotation mechanism of the vehicle cooperate with the pivoting mechanism of the X-axis and the rotation of the Z-axis, so that the first and second image capturing modules can be unobstructed. Full scan of the dental mold on the dental fixture without creating dead spots that cannot be scanned.

2. The second light source module of the present invention uses the second light source emitter to cooperate with the beam splitter and the total reflection mirror, and the single light beam emitted by the second light source emitter penetrates the beam splitter, and a part thereof The beam is reflected to the total reflection mirror and reflected downward by the total reflection mirror to generate a beam along the original path and a beam parallel to the original path, thereby enabling illumination using two beams, due to scanning of the standard module Or the outline of the tooth, the beam needs to be swept through the entire standard module or the tooth step by step, and the second camera lens is used for scanning sampling, so that only a single beam irradiation can be used compared with the existing dental model scanning device. The invention takes the time it takes to halve the scan.

The method of the present invention is to perform a rough scanning process on the dental mold through the first image capturing module and the first light source module, and then use the second image capturing module and the second light source module to perform an individual tooth body. Scanning, while improving the precision of the resulting three-dimensional model, thereby providing a higher quality three-dimensional model of the dental model.

In order to be able to understand the technical features and practical functions of the present invention in detail, and in accordance with the contents of the specification, the present invention is further described in the following preferred embodiments. Referring to the preferred embodiment of the scanning device, a frame 10, a carrier 20, a calibration plate 30, a first light source module 40, and a first image capturing module 50 are provided. a second light source module 60 and a second image capturing module 70.

As shown in FIG. 4 , the carrier 20 is mounted on the inner bottom of the frame 10 . The carrier 20 includes a displacement mechanism 21 , a vertical rotation mechanism 22 , a horizontal rotation mechanism 23 , and a dental fixture 24 . The displacement mechanism 21 includes a moving platform 211 and a loading platform 212. The moving platform 211 is provided with an operating rail 213. The loading platform 212 is mounted on the running rail 213 and moves along the running rail 213. The extension line of the rail 213 is a boring axis. The vertical rotation mechanism 22 is mounted on the stage 212. As shown in FIG. 5, the vertical rotation mechanism 22 uses the X axis in the three-dimensional coordinate system as a rotation axis. The yaw axis of the vertical rotation mechanism 22 is defined as a θ axis, and the vertical rotation mechanism 22 is extended with a carrier arm 221 extending along the X axis, the horizontal rotation The mechanism 23 is mounted on the carrier arm 221 of the vertical rotation mechanism 22, and the horizontal rotation mechanism 23 is rotatable relative to the carrier arm 221 by using a Z-axis in a three-dimensional coordinate system. The horizontal rotation mechanism 23 The rotation axis is defined as the γ axis, and the γ of the horizontal rotation mechanism 23 Is perpendicular to the θ axis of the vertical rotation mechanism 22, and the dental mold fixture 24 is fixed on the horizontal rotation mechanism 23 and located on a plane perpendicular to the γ axis of the horizontal rotation mechanism 23 for carrying a picture In the dental mold 90 shown at 10, the dental mold fixture 24 is rotated relative to the carrier arm 221 with the horizontal rotation mechanism 23.

The calibration plate 30 includes a first calibration plane 31 and a second calibration plane 32 that are perpendicular to each other. The first calibration plane 31 and the second calibration plane 32 are each provided with 32 correction points, and the calibration board 30 A correction plane 31 is fixed on the inner bottom surface of the frame 10 and spans the running rail 213, and the displacement mechanism 21 can displace the horizontal rotating mechanism 23 together with the dental mold fixture 24 to the first correction plane. Above 31 is located in front of the second correction plane 32.

The first light source module 40 is disposed above the moving platform 211 and is located at a side of the moving platform 211 , and adjacent to the upper side of the calibration plate 30 , the first light source module 40 includes a first light source emitter 41 . Positioning the laser beam onto the calibration plate 30 above the moving platform 211, the first light source emitter 41 is swingable left and right and the extending direction of the swinging path is along the axis of the moving platform 211. The pivot axis of the first light source emitter 41 is defined as the beta axis.

The first image capturing module 50 is disposed above the carrier 20 and located in the direction of the axis of the moving platform 211. The first image capturing module 50 is provided with a first imaging lens 51 facing the calibration plate. In the 30 position, the first imaging lens 51 is a photosensitive coupling element for scanning the contour of the object illuminated by the first light source emitter 41. The tilt angle of the first imaging lens 51, that is, the angle of the shooting, is The Z-axis in the three-dimensional coordinate system has an angle of 45 degrees, so that the diagonal line in the three-dimensional space is long, and the installation can be completed in a limited space, so that the first imaging lens 51 can obtain sufficient fine adjustment margin adjustment. The focal length and depth of field, and more preferably, the first imaging module 50 utilizes the David Scanner system.

As shown in FIG. 6 , the second light source module 60 is disposed above the calibration plate 30 and is located above the moving platform 211 relative to the other side of the first light source module 40 . The module 60 includes a second light source emitter 61, a first projection portion and a second projection portion. The second light source emitter 61 provides a laser beam, and the first and second projection portions are available. Projecting a light beam, and the light beam projected by the first projection portion is parallel to the light beam projected by the second projection portion. More preferably, the first projection portion is a beam splitter 62 and the second projection portion is a beam. The total reflection mirror 63 is located on the illumination path of the second light source emitter 61. The transmittance of the beam splitter 62 for a laser beam having a wavelength of 670 nm is 50% and the reflectance is 50. %, the total reflection mirror 63 is located adjacent to the beam splitter 62 and is approximately parallel to the beam splitter 62. As shown in FIG. 7, the laser beam emitted by the second light source emitter 61 penetrates the original path. a beam splitter 62, and a portion of the laser beam is reflected to the total reflection mirror 63 and reflected downward to generate Along the original path and a path of the laser beam parallel to the laser beam millimeters apart the original path.

The second image capturing module 70 is disposed above the calibration plate 30 and adjacent to the second light source module 60. The second image capturing module 70 is provided with a second imaging lens 71. A photosensitive coupling element is scanned by the second light source emitter 61 in cooperation with the beam splitter 62 and the contour of the object illuminated by the total reflection mirror 63. The second image capturing module 70 utilizes a SAL system.

Referring to FIG. 1 to FIG. 3, the dental mold 90 can be fixed to the dental mold fixture 24, and the loading stage 212 is moved along the axis of the running rail 213 by the displacement mechanism 21, so that the The dental mold fixture 24 is located above the first calibration plane 31 of the calibration plate 30. The first calibration plane 31 and the second calibration plane 32 provide a total of 64 calibration points to provide the first image capturing module 50 for correcting the three-dimensional space. The second light source emitter 61 of the second light source module 60 emits a laser beam, and the two parallel laser beams are irradiated to the dental mold 90 through the beam splitter 62 and the total reflection mirror 63. As shown in FIG. 5, the vertical rotation mechanism 22 is pivoted by the θ axis and the horizontal rotation mechanism 23 is rotated by the γ axis, so that the dental mold 90 or the tooth body 92 can be rotated. The dental mold 90 or the dental body 92 is completely scanned by the parallel laser beam and scanned by the second image capturing module 70. In addition, in order to increase the accuracy of scanning, the first light source module 40 can be The beam splitter and the total reflection mirror of the first and second projections are added, so that the first light source module 40 can also be multiplied The effect of the light source projection.

The present invention further includes a multi-source dental impression imaging method. Referring to the preferred embodiment of FIGS. 8-11, the method includes an initial calibration process 81, a rough scanning process 82, an accurate scanning process 83, and a The algorithm 84 is repeated.

The initial calibration process 81 includes an origin return step 811, a calibration plate sampling step 812, a three-dimensional module sampling step 813, a calibration processing step 814, and an import initial dental model file step 815.

The origin return step 811 resets a carrier 20 and a first light source module 40 to an initial position. The origin return step 811 includes the loading of the stage 212 of the carrier 20 to the running track 213. The initial position of the shaft, the θ axis of the vertical rotation mechanism 22 of the carrier 20 is restored to the initial position, the γ axis of the horizontal rotation mechanism 23 of the carrier 20 is restored to the initial position, and the first light source module 40 is The β-axis of the first light source emitter 41 is restored to the initial position, thereby ensuring that the reference points at the time of scanning are uniform. If the above-mentioned axes are impacted by an external force or are not accurately moved, the origin return step 811 must be performed. Restart the next steps.

The calibration plate sampling step 812 is to use the first light source emitter 41 of the first light source module 40 to project a laser beam onto the calibration plate 30, and utilize the first image of the first image capturing module 50. The lens 51 scans the first correction plane 31 of the calibration plate 30 and the second correction plane 32 perpendicular to the first correction plane 31 for a total of 64 correction points to sample and correct the image of the calibration plate 30.

Referring to FIG. 9 , the three-dimensional module sampling step 813 is performed by using the second light source emitter 61 of the second light source module 60 to cooperate with the beam splitter 62 and the total reflection mirror 63 to project a parallel laser beam. The standard module 91 scans the standard module 91 by using the second imaging lens 71 of the second image capturing module 70. The standard module 91 is hexagonal and has a total of 12 space coordinates. The lens 71 samples and corrects the spatial coordinates of the standard module 91.

The correction processing step 814 is based on the image of the calibration plate 30 and the spatial coordinate analysis processing of the standard module 91 as a plurality of correction information, and the plurality of correction information includes average precision information, standard calibration point information, and mode orientation difference information. The average accuracy information is used to reconstruct the average error rate of the Y-axis and the Z-axis in the three-dimensional coordinate system. The standard calibration point information is used to reconstruct the standard calibration points of the Y-axis and the Z-axis in the three-dimensional coordinate system. The standard deviation error is used to measure the difference in orientation between the calibration mode and the direction of motion of the Y-axis and the Z-axis in the three-dimensional coordinate system.

The importing the initial dental model file step 815 is to import a stereoscopic range of initial dental volume files to plan a scan path. The initial dental volume file is 100 cubic centimeters to limit the boundary of the scanning range, and the axis is The path of the γ axis, the θ axis, and the β axis is planned to match the first image capturing module 50 and the second image capturing module 70 .

The rough scanning process 82 performs preliminary scanning by using the first light source emitter 41 of the first light source module 40 and the first image capturing lens 51 of the first image capturing module 50. The rough scanning process 82 includes a placing step 821, a roughing step 822, and a combining step 823; as shown in FIG. 10, the placing step 821 is to place a dental mold 90 to be scanned on the dental mold fixture 24 and move the dental mold. 24 is applied to the calibration plate 30; the coarse scanning step 822 is to use the first light source emitter 41 of the first light source module 40 to project a laser beam onto the dental mold 90 to be scanned and the first image capturing mode The first imaging lens 51 of the group 50 scans the dental mold 90 to be scanned, and the vertical rotation mechanism 22 swings the dental mold fixture 24 at right and minus ninety degrees in the opposite direction of the θ-axis normal. The first imaging lens 51 is photographed once every 90 degrees of the positive and negative ninety degrees, and five rough scan files are generated according to the captured content; the combining step 823 is to paste the five oriented rough scan files. Combine a viewable 3D rough scan file, due to the shooting at every 25 degree angle Each of the angles overlaps with the angle of the adjacent shot, so that the viewable three-dimensional rough scan file is completely integrated without generating an unscanned dead angle, and more preferably, the rough scan step 822 can also The first light source module 40 may additionally add the beam splitter and the total reflection mirror of the first and second projection portions, thereby projecting parallel laser light sources to increase the speed of the rough sweeping step 822.

The precise scanning process 83 uses the second light source module 60 and the second image capturing module 70 for accurate scanning. The precise scanning process 83 includes a sampling step 831, an analysis step 832, and an integration step 833; The sampling step 831 is performed by using the second light source emitter 61 of the second light source module 60 to cooperate with the beam splitter 62 and the total reflection mirror 63 to project parallel two beams of light onto the tooth mold 90 to be scanned. 11 shows that the dental mold 90 to be scanned is disassembled into a plurality of dental bodies 92 mounted on the dental mold fixture 24, and the second imaging lens 71 of the second image capturing module 70 is A selected tooth body 92 of the scanned dental mold 90 is sampled and scanned in the Y-axis and Z-axis cross-sectional coordinates of the three-dimensional coordinate system and the vector value of the image capturing scan is calculated; the analyzing step 832 is a vector for the image capturing scan. The value is compared and analyzed with the average accuracy information, the standard calibration point information, and the mode orientation difference information, and the plurality of point cloud data is generated through the three-dimensional operation; the integration step 833 is to reconstruct and integrate the plurality of point cloud data. For a viewable 3D Indeed file.

The repetitive calculation process 84 determines whether all the teeth 92 in the dental mold 90 to be scanned have undergone the precise scanning step, and if so, ends the scanning; if not, according to the residual tooth 92 in the dental mold 90 The number continues to repeat the precise scanning step until all of the teeth 92 in the dental mold 90 have passed the precise scanning step.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the local changes or modifications made by the disclosed technology are still within the scope of the technical features of the present invention.

10. . . frame

20. . . vehicle

twenty one. . . Displacement mechanism

211. . . mobile platform

212. . . Loading platform

213. . . Running track

twenty two. . . Vertical rotation mechanism

221. . . Carrier arm

twenty three. . . Horizontal rotation mechanism

twenty four. . . Dental mold fixture

30. . . Calibration board

31. . . First correction plane

32. . . Second correction plane

40. . . First light source module

41. . . First light source emitter

50. . . First image capture module

51. . . First camera lens

60. . . Second light source module

61. . . Second light source emitter

62. . . Beam splitter

63. . . Total reflection mirror

70. . . Second image capture module

71. . . Second camera lens

81. . . Initial calibration process

811. . . Origin return step

812. . . Calibration plate sampling step

813. . . 3D module sampling step

814. . . Correction process step

815. . . Import the initial model file step

82. . . Rough scan process

821. . . Placement step

822. . . Rough sweep step

823. . . Combination step

83. . . Precise scanning process

831. . . Sampling step

832. . . Analysis step

833. . . Integration step

84. . . Repeated calculation process

90. . . Dental mold

91. . . Standard module

92. . . Tooth body

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a perspective view of another preferred embodiment of the present invention.

Figure 3 is a top plan view of a preferred embodiment of the present invention.

Figure 4 is a partially enlarged schematic view showing the operation of the carrier in accordance with a preferred embodiment of the present invention.

Fig. 5 is a schematic view showing the use of a vertical rotation mechanism and a horizontal rotation mechanism according to a preferred embodiment of the present invention.

FIG. 6 is a partial schematic view of a second light source module and a second image capturing module according to a preferred embodiment of the present invention.

FIG. 7 is a schematic diagram of the operation of the second light source module according to the preferred embodiment of the present invention.

Figure 8 is a flow chart of a preferred embodiment of the present invention.

Figure 9 is a schematic illustration of the operation of the three-dimensional module sampling step in accordance with a preferred embodiment of the present invention.

Figure 10 is a schematic illustration of the operation of the preferred embodiment of the present invention in the placement step.

Figure 11 is a schematic illustration of the operation of the preferred embodiment of the preferred embodiment of the present invention.

10. . . frame

20. . . vehicle

twenty one. . . Displacement mechanism

211. . . mobile platform

212. . . Loading platform

213. . . Running track

twenty two. . . Vertical rotation mechanism

221. . . Carrier arm

twenty three. . . Horizontal rotation mechanism

twenty four. . . Dental mold fixture

30. . . Calibration board

31. . . First correction plane

32. . . Second correction plane

40. . . First light source module

41. . . First light source emitter

50. . . First image capture module

51. . . First camera lens

60. . . Second light source module

61. . . Second light source emitter

62. . . Beam splitter

63. . . Total reflection mirror

70. . . Second image capture module

71. . . Second camera lens

Claims (6)

A multi-source dental model scanning device comprising: a carrier comprising a displacement mechanism comprising a carrier and a mobile platform, the carrier being movably mounted on the mobile platform; a vertical rotation The mechanism is mounted on the stage, the vertical rotation mechanism is rotatable relative to the stage with the X axis as a rotation axis; a horizontal rotation mechanism is mounted to the vertical rotation mechanism, the horizontal rotation The mechanism is rotatable relative to the vertical rotation mechanism with the Z axis as a rotation axis; and a dental mold fixture mounted on the horizontal rotation mechanism for carrying a dental mold; a calibration plate spanning On the mobile platform, the displacement mechanism can carry the carrier and move to the calibration plate; a first light source module is mounted on the mobile platform and on the side of the mobile platform, the first The light source module includes a first light source emitter to project a beam of light on the calibration plate above the moving platform; a first image capturing module mounted on the carrier and extending on the moving platform Direction, the first image capturing mode A first camera lens is disposed; a second light source module is disposed above the calibration plate and is located above the moving platform relative to the other side of the first light source module, the second light source module The first projection portion and the second projection portion respectively project a light beam, and the light beam projected by the first projection portion is parallel to the second projection portion. The second image capturing module is disposed above the correction plate and adjacent to the second light source module, and the second image capturing module is provided with a second image capturing lens. The multi-source dental model scanning device of claim 1, wherein the first projection portion of the second light source module is a beam splitter and the second projection portion is a total reflection mirror, and the second projection portion is a total reflection mirror The second light source module is provided with a second light source emitter, and the beam splitter is located on the illumination path of the second light source emitter. The total reflection mirror is located adjacent to the beam splitter, and the second light source emitter emits A beam of light passes through the beam splitter and is partially reflected to the total reflection mirror to produce two parallel beams. The multi-source dental model scanning device according to claim 2, wherein the beam splitter has a transmittance of 50% and a reflectance of 50% for a light beam having a wavelength of 670 nm. A dental image capturing scanning method includes: an initial calibration process including an origin return step of resetting a carrier and a first light source module to an initial position; and a calibration plate sampling step Using a first light source module to project a light beam on a calibration plate and scanning a plurality of calibration points on the calibration plate with a first image capturing module to sample and correct the image of the calibration plate; a three-dimensional module sampling step, The first projection unit and the second projection unit of the second light source module respectively project parallel two beams of light into a standard module and scan the standard module by using a second image capturing module. The space coordinates of the standard module are sampled and corrected; a calibration processing step is based on the image of the calibration plate and the space coordinate analysis of the standard module as a plurality of correction information; and a process of importing the initial dental model file Entering a stereoscopic range of initial die volume files to plan a scan path; a rough scan process using the first light source module and the first image capture module Step scanning, the rough scanning process includes a placing step of placing a dental mold to be scanned on the dental mold fixture and moving the dental mold fixture to the calibration plate; a rough scanning step The first light source module is used to project a light beam on the dental mold to be scanned, and the first image capturing module scans the dental mold to be scanned, and the opposite direction of the dental fixture is normal. Each of the ten-degree angles is photographed in multiple times, and the plurality of rough scan files are generated according to the content of the plurality of shots; and a combination step is to paste the plurality of rough scan files into a viewable three-dimensional rough scan file. An accurate scanning process, wherein the second light source module and the second image capturing module are used for accurate scanning, the precise scanning process includes a sampling step, which utilizes the second light source module a projection portion and the second projection portion respectively project parallel two beams of light to the dental mold to be scanned, and the second imaging module samples a cross-sectional coordinate of a selected tooth in the dental mold to be scanned. Scan and calculate the image capture scan a vector value; an analysis step of analyzing the vector value of the image capture scan and the complex correction information and generating a plurality of point cloud data; and an integration step of reforming and integrating the plurality of point cloud data a viewable three-dimensional accurate file; and a repetitive calculation process, which determines whether all the teeth of the dental mold have undergone the precise scanning step, and if not, repeats the precise scanning step to all the teeth of the dental mold The body passes through this precise scanning step. The dental image capturing scanning method according to claim 4, wherein the plurality of correction information includes average precision information, standard calibration point information, and mode orientation difference information, and the average precision information is used to reconstruct the Y-axis and the Z-axis. A calibration error point on the average error of the axis. The standard calibration point information is used to reconstruct the standard deviation error of the standard calibration point of the Y-axis and the Z-axis. The mode orientation difference information is used to measure the calibration mode with the Y-axis and the Z-axis. The direction of motion is poor between the pixels of the orientation. The dental image capturing scanning method according to claim 4 or 5, wherein the rough scanning step of the rough scanning flow is a positive and negative ninety degree angle of 25 opposite to the normal of the dental mold fixture. A shot is taken at a degree to provide the bonding step to fit the three-dimensional rough scan file.