TW201544067A - Intraoral scanner - Google Patents

Abstract

The present invention provides an intraoral scanner, which comprises an image capture module, a projection module and a gesture detection module. The light emitted by the projection module may pass the reflection lens of the image capture module and irradiate the teeth to be checked within the mouth. The reflected light from the surfaces of the teeth will pass the reflection lens and enter the image capture lens of the image capture module. Then, the imaging member of the image capture module will capture the image and transmit to a modeling unit for obtaining a profile in high precision and enhancing the modeling accuracy. When the intraoral scanner changes the gesture along with the difference of shooting surface of teeth, the gesture detection module will detect the gesture change and transmit to the modeling unit for matching the gesture with the image to be recorded by the recording unit, such that the image may be finished with multi-facet feature matching in a short period of time.

Description

Intraoral scanning device

The present invention relates to an intraoral scanning device, and more particularly to an intraoral scanning device which can obtain a contour with high precision and enhance the accuracy of modeling.

Please refer to the invention patent of "A Three-Dimensional Precision Tooth Profile Rapid Profile Scanning Device and Technology" of the Republic of China Bulletin No. 576729, which is composed of two sets of symmetrical laser optical head units, optical components and optics of the image capturing unit. The lens group is integrated into a measuring device, and the structural light projection angle is designed by the geometric relationship between the optical projection unit and the tooth shape to be tested, and then the structural light image is captured by multiple sets of image sensing components, and is calculated by triangulation method. The three-dimensional precision profile size of the tooth to be tested is only suitable for tooth profile scanning and cannot be used for intraoral scanning.

SUMMARY OF THE INVENTION It is a primary object of the present invention to provide an intraoral scanning device which provides an intraoral scanning device that can be used to directly scan the intra-tooth profile.

In order to achieve the foregoing, the in-oral scanning device of the present invention comprises: an image capturing module comprising an image capturing member, an image capturing lens, a sleeve and a reflecting lens, wherein the image capturing member is disposed in the frame. The image capturing device is disposed on the image capturing member, the sleeve is sleeved on the image capturing lens and assembled on the image capturing member, the reflecting lens is obliquely disposed at an end of the sleeve; and a projection module is The image capturing light source is coupled to the image capturing module, and the projection light source is a line light source, and the image forming width of the light source is less than 0.2 mm. The attitude sensing module is coupled to the image capturing module, and the image capturing module is coupled to the image capturing module. The attitude sensing module comprises a circuit board and an attitude sensing component electrically connected to the circuit board.

The reflecting lens of the intraoral scanning device corresponds to the surface of the tooth to be tested in the mouth, and the light emitted from the light emitting end of the projection light source is irradiated to the surface of the tooth to be tested through the reflecting lens, and the light reflected from the surface of the tooth passes through the reflecting lens. Taking the image lens, the image is captured by the camera and transmitted to the modeling unit to obtain a high-precision contour image and enhance the modeling accuracy, and the attitude sensing module can sense the posture of the scanning device in the mouth The posture information and image information of the surface contours such as the tongue side, the buccal side or the occlusal surface of the tooth are scanned for recording by the recording unit, and the correctness of the modeling is enhanced, which helps the image to complete the multi-face feature fitting in a short time. To achieve accurate tooth profile.

Referring to FIG. 1 to FIG. 3, a preferred embodiment of the intraoral scanning device of the present invention includes an image capturing module 30, a projection module 20, and a posture sensing module 40, further including a frame 10. .

The intraoral scanning device of the present invention is connected to a recording unit.

The image capturing module 30 includes an image capturing member 31, an image capturing lens 32, a sleeve 33 and a reflecting lens 34. The image capturing lens 32 is disposed on the image capturing member 31. The sleeve 33 is sleeved on the image capturing device. The lens 32 is disposed in the image pickup member 31, and the reflection lens 34 is disposed obliquely at the end of the sleeve 33.

The projection module 20 is coupled to the image capturing module 30 and includes a projection light source 21, and further includes a correcting lens 22 having a light emitting end, the correcting lens 22 facing the light emitting end, wherein the projection lens 20 The projection light source 21 is a high-coherence light source, which may be laser light, and the projection light source 21 is further a dual-wavelength laser light. The light source projected by the projection light source 21 is a line light source, and the imaging width of the light source is controlled at 0.2. There is a better imaging effect below mm. The projection source 21 includes a laser diode and a set of lenses that can shape the beam, so that the module can project a beam pattern that meets the requirements of the imaging software.

The attitude sensing module 40 is coupled to the image capturing module 30, and the attitude sensing module 40 includes a circuit board 41 and a posture sensing member electrically connected to the circuit board 41. The measuring piece is a gyroscope.

The frame 10 includes a base 11 on which a plurality of brackets 12 are disposed. The frame 10 is provided with a rail 13 on the base 11, and a rail slot 14 is formed on the stacking frame 12 with a mating rail 13 The in-oral scanning device is provided with a driving motor 15 on the base 11. The driving motor 15 is connected to a screw. The end of the screw is connected to the set of the frame 12, and the driving motor 15 drives the screw to rotate. The alignment frame 14 is displaced relative to the track 13. The assembly frame 12 is connected to the image capturing module 30 and the projection module 20, and is driven by the screw to reciprocate the assembly frame 12 relative to the track 13 to perform an image capturing function.

In addition, the in-oral scanning device further includes a casing, and the frame 10, the projection module 20, the image capturing module 30, and the attitude sensing module 40 are disposed in the casing, and the sleeve of the image capturing module 30 33 and the reflecting lens 34 extend out of the casing.

When the driving motor 15 rotates, the projection module 20 and the image capturing module 30 are displaced, so that the projection module 20 and the image capturing module 30 are transmitted through the different positions of the teeth corresponding to the reflecting lens 34, so as to gradually scan the tooth surface and obtain the teeth. A plurality of partial images, which in turn form a surface contour of a tooth, as shown in FIG. 4, taking a tooth 50 as an example, the image of the occlusal surface of the tooth 50 is superimposed by the light emitted by the projection light source 21 The linear image 51 is composed of a plurality of linear images 51 constituting one surface, that is, the surface contour data of the tooth 50 is obtained.

In the above, the reflective lens 34 of the intraoral scanning device extends into the patient's mouth, and the reflective lens 34 corresponds to the surface of the tongue, the buccal side and the occlusal surface of the tooth to be tested in the mouth, and is passed through the projection module 20 and Obtaining a surface image of the tooth to be tested, such as the module 30, as shown in FIG. 3, the projection light source 21 emits laser light and passes through the correction lens 22 and the reflection lens 34, thereby irradiating the surface of the tooth to be tested, and the surface of the tooth is The reflected light then passes through the reflective lens 34, the image taking lens 32, and the image of the tooth surface is captured by the image capturing device 31 and transmitted to a modeling unit, wherein the intraoral scanning device scans the lingual side and the buccal side of the tooth. When the occlusal surface is changed, the posture state thereof is changed, and the posture sensing module 40 can sense the posture state of the scanning device in the mouth, so that the recording unit can record the posture information and the image information, which can help the image to be completed in a short time. Multi-faceted features fit to create a three-dimensional image of the teeth in the mouth.

In summary, the intraoral scanning device can obtain high-precision contour lines, enhance the accuracy of modeling, and obtain accurate images.

10‧‧‧Frame
11‧‧‧Base
12‧‧‧Box
13‧‧‧ Track
14‧‧‧ rail slot
15‧‧‧Drive motor
20‧‧‧Projection Module
21‧‧‧Projected light source
22‧‧‧Corrected lenses
30‧‧‧Image capture module
31‧‧‧Photographs
32‧‧‧Image taking lens
33‧‧‧ sleeve
34‧‧‧Reflective lenses
40‧‧‧ attitude sensing module
41‧‧‧ boards
50‧‧‧ teeth
51‧‧‧ linear image

1 is a perspective view of a preferred embodiment of an intraoral scanning device of the present invention. 2 is a side elevational view of a preferred embodiment of the intraoral scanning device of the present invention. 3 is a schematic view showing a light path of a preferred embodiment of the intraoral scanning device of the present invention. Figure 4 is a schematic view showing the state of use of a preferred embodiment of the intraoral scanning device of the present invention.

10‧‧‧Frame

11‧‧‧Base

12‧‧‧Box

13‧‧‧ Track

15‧‧‧Drive motor

20‧‧‧Projection Module

21‧‧‧Projected light source

22‧‧‧Corrected lenses

30‧‧‧Image capture module

31‧‧‧Photographs

32‧‧‧Image taking lens

33‧‧‧ sleeve

34‧‧‧Reflective lenses

40‧‧‧ attitude sensing module

41‧‧‧ boards

Claims (9)

An intraoral scanning device, comprising: an image capturing module, comprising: an image capturing member, an image capturing lens, a sleeve and a reflecting lens, wherein the image capturing lens is disposed on the image capturing member, and the sleeve is sleeved on the image capturing member The image capturing member is disposed on the image capturing member, and the reflecting lens is obliquely disposed at an end of the sleeve; a projection module is coupled to the image capturing module and includes a projection light source having a light emitting end, and projecting The light source is a line light source, and the imaging width of the light source is less than 0.2 mm; and an attitude sensing module is coupled to the image capturing module, and the attitude sensing module comprises a circuit board and an electrical connection circuit board. Gesture sensing piece. The intraoral scanning device of claim 1, wherein the projection light source is a laser diode. The intraoral scanning device of claim 2, wherein the projection light source is a dual-wavelength laser diode. The intraoral scanning device according to claim 2, wherein the projection light source is a laser light diode of two different wavelengths. The intraoral scanning device of claim 2, wherein the projection source comprises a set of lenses that shape the beam. The intraoral scanning device according to any one of claims 1 to 5, wherein the posture sensing member is a gyroscope. The intraoral scanning device according to any one of claims 1 to 5, wherein the intraoral scanning device comprises a frame, the frame comprises a base, and the base is provided with a set of frames, the image capturing The module and the projection module are disposed in the group frame. The in-oral scanning device of claim 7, wherein the frame is provided with a track on the base, and the frame is provided with a track groove of the matching track, and the intra-oral scanning device is provided with a track on the base A drive motor is coupled to a screw, the end of the screw being coupled to the set of frames. The intraoral scanning device of claim 8, wherein the projection module comprises a correcting lens, and the correcting lens faces the light emitting end of the projection light source.