CN102764163A - Novel optical three-dimensional imaging device - Google Patents
Novel optical three-dimensional imaging device Download PDFInfo
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- CN102764163A CN102764163A CN2012102638821A CN201210263882A CN102764163A CN 102764163 A CN102764163 A CN 102764163A CN 2012102638821 A CN2012102638821 A CN 2012102638821A CN 201210263882 A CN201210263882 A CN 201210263882A CN 102764163 A CN102764163 A CN 102764163A
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Abstract
A novel optical three-dimensional imaging device is characterized by comprising a master case, a scanning handle and a light transmitting device, wherein the master case is internally provided with a laser generator, a spatial light modulator, an optical imaging system, an image sensor and a control circuit; the scanning handle is internally provided with an array light converting module, a spectroscope, a telecentric mode co-focus optical system, a motor and an emergent/or incident light opening; and the light transmitting device is connected with the master case and the scanning handle and comprises an emergent light transmitting device, a reflected light transmitting device and a first protection cover covered on the emergent light transmitting device and the reflected light transmitting device; the emergent light transmitting device and the reflected light transmitting device respectively comprise a light transmitting component and a second protection cover covered on the light transmitting component; and one end of each light transmitting component is configured into a master case wiring end while the other end is configured into a scanning handle wiring end. With the adoption of the structural design, compared with the prior art, the imaging device has the following characteristics of better imaging effect, more convenience for operation and higher practicability.
Description
Technical field
The present invention relates to dental oral treatment field, be specifically related to a kind of novel non-contact optical three-dimensional image forming apparatus that is used to obtain the tooth three-dimensional surface feature.
Background technology
In dental imaging field and artificial tooth The Automation Design field; The method and apparatus that multiple different optical 3-dimensional direct imaging is arranged; What be different from that tradition uses that impression material gets the tooth modeling method is; The method of these optics direct imagings adopts digitized computer-aided design (CAD) to the tooth direct imaging in the oral cavity usually; Obtain the corresponding tooth model on computers, afterwards the digitized tooth model is transferred to artificial tooth and makes laboratory, make (CAM) tooth replacement through adopting area of computer aided.
Wherein, there is a kind of three-dimensional optical formation method to be based on that the laser triangulation method is measured dental surface and the distance that extend between the optical detector in patient's cavity is obtained the dental surface three-dimensional feature.Have following shortcoming: this method hypothesis dental surface has ideal reflective characteristic, and like Lambertian reflectance, yet the surface of actual teeth does not have the Lambertian reflectance characteristic, and therefore imaging is often not accurate enough.
And other technology; As business-like Siemens GmbH or Sirona dental product CEREC-1 and CEREC-2; Use optical coherence tomography technology and the optical phase technology of moving to realize three-dimensional imaging respectively to tooth; These two kinds of imaging systems utilize specially designed hand-held optical detector to obtain tooth three-dimensional surface feature information; Yet weak point is: this method need be smeared one deck particular matter (as measuring powder or a kind of Chinese white suspension) at dental surface, and its thickness is difficult to being held in the scope of required standard, causes forming images being prone to produce error.
Therefore, how to solve the not enough point that above-mentioned prior art exists, just become problem to be solved by this invention.
Summary of the invention
The object of the invention provides a kind of novel optical three-dimensional image imaging device.
For achieving the above object, the technical scheme that the present invention adopts is: a kind of novel optical three-dimensional image imaging device comprises: a mainframe box, in establish laser generator, spatial light modulator, imaging optical system, imageing sensor and control circuit; The one scan handle, in establish confocal optical system, the motor of array light modular converter, spectroscope, telecentric iris pattern and go out/the incident illumination mouth; One passes electro-optical device, connects said mainframe box and scanning hands handle; This biography electro-optical device comprises that emission light passes electro-optical device, reflected light passes electro-optical device and is coated on first protective sleeve that this emission light passes electro-optical device and reflected light biography electro-optical device; Said emission light passes electro-optical device and reflected light passes second protective sleeve that electro-optical device includes biography light parts and is coated on these biography light parts, and an end of said biography light parts is the mainframe box terminals, and the other end is scanning handle terminals; Wherein, The exit end of said laser generator is connected with the incident end of spatial light modulator; The exit end of this spatial light modulator passes the mainframe box terminals that pass the light parts in the electro-optical device with said emission light and is connected; This emission light passes the incident end that the scanning handle terminals that pass the light parts in the electro-optical device connect said array light modular converter; The exit end of said array light modular converter connects first end of the confocal optical system of said telecentric iris pattern via said spectroscope, second end of the confocal optical system of this telecentric iris pattern connects saidly to go out/the incident illumination mouth; Said reflected light passes the scanning handle terminals that pass the light parts in the electro-optical device connect the confocal optical system of said telecentric iris pattern via said spectroscope first end; This reflected light passes the incident end that the mainframe box terminals that pass the light parts in the electro-optical device connect said imaging optical system, and the exit end of this imaging optical system is connected with the receiving terminal of said imageing sensor; The control circuit of said mainframe box is electrically connected said laser generator, motor and imageing sensor.
Related content in the technique scheme is explained as follows:
1, in the such scheme, said laser generator is in order to produce laser beam.
2, in the such scheme; The effect of said spatial light modulator is that said laser beam is become spatial incoherent light, and (" interference of light " means: mutual superposition when two row or several row light wave meet in the space because the laser beam that said laser generator produces originally as coherent light, is prone to take place interference of light; All the time strengthen in some zone; Then weaken all the time in other zones, form the phenomenon of stable strength distribution), and interference of light will reduce the imaging effect of shone thing.
3, in the such scheme; The effect of said imaging optical system is to assemble passing the light that passes the light parts in the electro-optical device through said reflected light; Be specially the combination of single convex lens or a series of lens; And be good with the latter, can have the effect of eliminating noise and improving image quality because select for use a series of lens combination to compare single convex lens.
4, in the such scheme, the effect of said imageing sensor is to experience optical image information and convert the exportable signal of telecommunication to, promptly accomplishes the conversion that " light " arrives " "; This imageing sensor is CCD or CMOS.
5, in the such scheme, said control circuit is in order to the work of control laser generator, motor, imageing sensor.
6, in the such scheme, the effect of said array light modular converter is to convert source beam to multiply direction of illumination consistent light beam; This array light modular converter specifically can be microlens array, or pinhole array adds the lens combination.
7, in the such scheme, said spectroscopical effect is: one, refraction passes the light beam that passes the light parts in the electro-optical device through said emission light; Two, transmit (promptly being penetrated) and pass the light beam that passes the light parts in the electro-optical device through said reflected light.
8, in the such scheme; The confocal optical system of said telecentric iris pattern (telecentric lens) specifically is made up of a series of lens, accurate pin hole, slit; Can produce orthographic projection view to image, promptly the amplification of image is independent mutually with the position to the distance of confocal optical system with image.
9, in the such scheme, said motor is subjected to displacement in order to the confocal optical system of controlling said telecentric iris pattern and changes its focal position, forms three-dimensional image to help it, and if the driving of no motor then can only form two dimension even one dimension image to the irradiated area.
10, in the such scheme, saidly go out/the incident illumination mouth is specially an endoscope, comprises vitreous body and is arranged on a minute surface of terminal tool total internal reflection function, and its effect is to send to emit light into tooth and the reflected light of gathering tooth.
11, in the such scheme, said biography light parts are specially optical fiber or free space, and are good with optical fiber.
12, in the such scheme, also comprise one first polariser and second polariser, this first, second polariser is in order to light generation polarization, with final raising imaging effect; Said first polariser is located between the incident end of exit end and spatial light modulator of said laser generator; Said second polariser is located between the incident end that said reflected light passes the scanning handle terminals that pass the light parts in the electro-optical device and imaging optical system.
13, in the such scheme, also comprise a relay optical system, this relay optical system is located at the confocal optical system of said telecentric iris pattern and go out/the incident illumination mouth between, its role is to transfer to out/the incident illumination mouth from confocal optical system image is undistorted.
Operation principle of the present invention and advantage are following: a kind of novel optical three-dimensional image imaging device of the present invention; Through laser generator, first polariser, spatial light modulator, the second polariser imaging optical system, imageing sensor and control circuit are set in mainframe box; Confocal optical system, motor, the relay optical system of array light modular converter, spectroscope, telecentric iris pattern is set in the handle and goes out/the incident illumination mouth in scanning; And through this mainframe box of biography electro-optical device connection and scanning handle; This biography electro-optical device then has independently launches light biography electro-optical device and reflected light biography electro-optical device; So that the present invention compares prior art constructions, it is better and operate more convenient practical improvement to have an imaging effect.
Description of drawings
Accompanying drawing 1 is the structural representation of most preferred embodiment of the present invention;
Accompanying drawing 2 is the structural principle block diagram of most preferred embodiment of the present invention;
Accompanying drawing 3 is for passing the cross-sectional view of electro-optical device in the most preferred embodiment of the present invention;
Accompanying drawing 4 is the structural representation of the external equipment of most preferred embodiment of the present invention.
In the above accompanying drawing: 1, pass electro-optical device; 2, emission light passes electro-optical device; 3, reflected light passes electro-optical device; 4, first protective sleeve; 5, second protective sleeve; 6, optical fiber; 7, spectroscope; 8, tooth.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Embodiment: as shown in Figure 1, a kind of novel optical three-dimensional image imaging device comprises:
One mainframe box, in establish laser generator, first polariser, spatial light modulator, the second polariser imaging optical system, imageing sensor and control circuit;
The one scan handle, in establish confocal optical system, motor, the relay optical system of array light modular converter, spectroscope 7, telecentric iris pattern and go out/the incident illumination mouth;
Comprise that also one passes electro-optical device 1; Shown in Fig. 2～3; This passes the said mainframe box of electro-optical device 1 connection and scans handle, and comprises that emission light passes electro-optical device 2, reflected light biography electro-optical device 3 and is coated on first protective sleeve 4 that this emission light passes electro-optical device 2 and reflected light biography electro-optical device 3; Said emission light passes electro-optical device 2 and passes second protective sleeve 5 that electro-optical device 3 includes biography light parts and is coated on these biography light parts with reflected light, and said biography light parts are specially optical fiber 6, and an end of this optical fiber 6 is the mainframe box terminals, and the other end is scanning handle terminals; Make that through the said structure design this biography electro-optical device 1 has flexible speciality, so user can be controlled said scanning handle by flexible operating.
As shown in Figure 1; The exit end of said laser generator is connected with the incident end of first polariser; The exit end of first polariser is connected with the incident end of spatial light modulator; The exit end of this spatial light modulator is connected with the mainframe box terminals that said emission light passes optical fiber 6 in the electro-optical device 2; See Fig. 3, the scanning handle terminals of optical fiber 6 connect the incident end of said array light modular converter in this emission light biography electro-optical device 2, and the exit end of said array light modular converter connects first end of the confocal optical system of said telecentric iris pattern via said spectroscope 7; Second end of the confocal optical system of this telecentric iris pattern connects first end of said relay optical system, and second end of relay optical system connects saidly to go out/the incident illumination mouth;
Said reflected light passes first end of the scanning handle terminals of optical fiber 6 in the electro-optical device 3 via the confocal optical system of the said telecentric iris pattern of said spectroscope 7 connections; The mainframe box terminals of optical fiber 6 connect the incident end of said second polariser in this reflected light biography electro-optical device 3; The exit end of second polariser is connected with the incident end of said imaging optical system, and the exit end of this imaging optical system is connected with the receiving terminal of said imageing sensor;
The control circuit of said mainframe box is electrically connected said laser generator, motor and imageing sensor.
Wherein, said laser generator is in order to produce laser beam; Said first, second polariser is in order to light generation polarization, with final raising imaging effect; The effect of said spatial light modulator is that said laser beam is become spatial incoherent light, to avoid owing to laser beam is that coherent light is prone to take place the problem that interference of light reduces imaging effect; Said imaging optical system is specially a series of lens combination, assembles will pass through the light that passes the light parts in the said reflected light biography electro-optical device, and can eliminate noise, raising image quality; Said imageing sensor is specially a CCD (see figure 1), and its effect is to experience optical image information and convert the exportable signal of telecommunication to; Said control circuit gives off laser beam in order to the control laser generator; And the confocal optical system of can drive motors controlling said telecentric iris pattern is subjected to displacement and changes its focal position (form three-dimensional image to help it, and if the driving of no motor then can only form two dimension even one dimension image to the irradiated area); Work that can also the control figure image-position sensor; And this control circuit also is connected with an external equipment (PC), and directly drives image capture module work wherein; See Fig. 4, and imageing sensor also can directly be sent to this image capture module with signal;
Said array light modular converter is specially microlens array, source beam is converted to the consistent light beam of multiply direction of illumination; The light beam that the effect of said spectroscope 7 can reflect through passing the light parts in the said emission light biography electro-optical device can transmit (promptly being penetrated) passes biography light parts in the electro-optical device through said reflected light light beam again; The confocal optical system of said telecentric iris pattern (telecentric lens) specifically is made up of a series of lens; These a series of lens have different parameters; Therefore has different optical characteristics; Can produce orthographic projection view to image, promptly the amplification of image is independent mutually with the position to the distance of confocal optical system with image; The effect of said relay optical system is to transfer to out/the incident illumination mouth from said confocal optical system image is undistorted; Saidly go out/the incident illumination mouth is specially an endoscope, comprises vitreous body and is arranged on a minute surface of terminal tool total internal reflection function, and its effect is to send to emit light into tooth 8 and the reflected light of gathering tooth 8.
Describe with regard to operation principle of the present invention: when device of the present invention was started working, at first, the laser generator in the mainframe box received the control instruction of control circuit and starts working, and gives off laser beam at present; Laser beam is injected first polariser, via injecting spatial light modulator after this first polariser polarization, so that said laser beam is become spatial incoherent light; Subsequently; The emission light that light beam gets in the biography electro-optical device 1 that is plugged in this mainframe box passes electro-optical device 2; And the optical fiber 6 that passes in the electro-optical device 2 through this emission light is conveyed into the array light modular converter of being made up of microlens array in the said scanning handle; Light beam converts the consistent light beam of multiply direction of illumination to through this microlens array, and through getting into the confocal optical system of the telecentric iris pattern of being made up of a series of lens after the refraction of said spectroscope 7, gets into said relay optical system then; Pass through the transmission of this relay optical system again; Light beam gets into by what endoscope constituted saidly to go out/the incident illumination mouth, and by this go out/the incident illumination mouth is with beam emissions, so that patient's tooth 8 is shone; When patient's tooth 8 was shone, the operator can come patient's tooth 8 is carried out comprehensive and omnibearing scanning through moving said scanning handle, because the setting of said biography electro-optical device 1, this work meeting becomes comparatively easy and convenient; In this simultaneously, the motor in the control circuit gated sweep handle in the mainframe box drives said confocal optical system and carries out displacement, its objective is that the tooth 8 to the irradiated area carries out real-time three-dimensional irradiation scanning; At last; By the light beam of tooth 8 surface reflectances through saidly go out/the incident illumination mouth gets back to relay optical system, and after transferring to confocal optical system, directly pass said spectroscope 7 and get into the reflected light that passes electro-optical devices 1 and pass electro-optical device 3; Optical fiber 6 through reflected light biography electro-optical device 3 transfers to second polariser in the mainframe box again; Via this second polariser polarization, the light beam after the polarization is injected in the imaging optical system that is constituted by a series of lens, light beam is assembled, eliminated noise equally; Get into CCD (being imageing sensor) again, imaging device so far of the present invention is finished the work.Need to prove: control circuit can be according to the real-time feedback data of image capture module or the signal of external PC among CCD, motor and Fig. 4; When device work, adjust the work schedule of above-mentioned CCD, motor and image capture module in real time, to obtain comparatively satisfied imaging.
As shown in Figure 4; This external PC comprises image capture module, CPU, display, modem; Wherein display can external user's control module; Modem then can external network/bluetooth/communication modules such as WIFI, to send image information to directly making the tooth mould such as tooth mould process equipment.
A kind of novel optical three-dimensional image imaging device of the present invention; Through laser generator, first polariser, spatial light modulator, the second polariser imaging optical system, imageing sensor and control circuit are set in mainframe box; Confocal optical system, motor, the relay optical system of array light modular converter, spectroscope, telecentric iris pattern is set in the handle and goes out/the incident illumination mouth in scanning; And through this mainframe box of biography electro-optical device connection and scanning handle; This biography electro-optical device then has independently launches light biography electro-optical device and reflected light biography electro-optical device; So that the present invention compares prior art constructions, it is better and operate more convenient practical improvement to have an imaging effect.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. novel optical three-dimensional image imaging device is characterized in that: comprising:
One mainframe box, in establish laser generator, spatial light modulator, imaging optical system, imageing sensor and control circuit;
The one scan handle, in establish confocal optical system, the motor of array light modular converter, spectroscope, telecentric iris pattern and go out/the incident illumination mouth;
One passes electro-optical device, connects said mainframe box and scanning hands handle; This biography electro-optical device comprises that emission light passes electro-optical device, reflected light passes electro-optical device and is coated on first protective sleeve that this emission light passes electro-optical device and reflected light biography electro-optical device; Said emission light passes electro-optical device and reflected light passes second protective sleeve that electro-optical device includes biography light parts and is coated on these biography light parts, and an end of said biography light parts is the mainframe box terminals, and the other end is scanning handle terminals;
Wherein, The exit end of said laser generator is connected with the incident end of spatial light modulator; The exit end of this spatial light modulator passes the mainframe box terminals that pass the light parts in the electro-optical device with said emission light and is connected; This emission light passes the incident end that the scanning handle terminals that pass the light parts in the electro-optical device connect said array light modular converter; The exit end of said array light modular converter connects first end of the confocal optical system of said telecentric iris pattern via said spectroscope, second end of the confocal optical system of this telecentric iris pattern connects saidly to go out/the incident illumination mouth;
Said reflected light passes the scanning handle terminals that pass the light parts in the electro-optical device connect the confocal optical system of said telecentric iris pattern via said spectroscope first end; This reflected light passes the incident end that the mainframe box terminals that pass the light parts in the electro-optical device connect said imaging optical system, and the exit end of this imaging optical system is connected with the receiving terminal of said imageing sensor;
The control circuit of said mainframe box is electrically connected said laser generator, motor and imageing sensor.
2. imaging device according to claim 1 is characterized in that: also comprise one first polariser and second polariser; Said first polariser is located between the incident end of exit end and spatial light modulator of said laser generator; Said second polariser is located between the incident end that said reflected light passes the scanning handle terminals that pass the light parts in the electro-optical device and imaging optical system.
3. imaging device according to claim 1 is characterized in that: also comprise a relay optical system, this relay optical system is located at the confocal optical system of said telecentric iris pattern and go out/the incident illumination mouth between.
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| CN201210263882.1A CN102764163B (en) | 2012-07-27 | 2012-07-27 | Novel optical three-dimensional imaging device |
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| CN201210263882.1A CN102764163B (en) | 2012-07-27 | 2012-07-27 | Novel optical three-dimensional imaging device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105125162A (en) * | 2015-09-17 | 2015-12-09 | 苏州佳世达光电有限公司 | Oral cavity scanner |
| CN106482663A (en) * | 2016-12-10 | 2017-03-08 | 巫献 | Based on 3-D scanning rifle in the hand-held cavity of common focusing principle |
| JP2017536165A (en) * | 2014-10-29 | 2017-12-07 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Whitening system and method |
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| CN201295298Y (en) * | 2008-11-25 | 2009-08-26 | 上海上远义齿有限公司 | Remote false-tooth data processing system |
| CN101918199A (en) * | 2007-10-26 | 2010-12-15 | 想象科技有限公司 | Process and freeform fabrication system for producing a three-dimensional object |
| CN202714941U (en) * | 2012-07-27 | 2013-02-06 | 艾博莱特（苏州）科技有限公司 | Novel optical three-dimensional image imaging device |
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| CN1578646A (en) * | 2001-10-31 | 2005-02-09 | 画像诊断株式会社 | Medical simulation apparatus and method for controlling 3-dimensional image display in the medical simulation apparatus |
| CN101918199A (en) * | 2007-10-26 | 2010-12-15 | 想象科技有限公司 | Process and freeform fabrication system for producing a three-dimensional object |
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| JP2017536165A (en) * | 2014-10-29 | 2017-12-07 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Whitening system and method |
| US11284981B2 (en) | 2014-10-29 | 2022-03-29 | Koninklijke Philips N.V. | Tooth whitening system and method |
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| CN106482663A (en) * | 2016-12-10 | 2017-03-08 | 巫献 | Based on 3-D scanning rifle in the hand-held cavity of common focusing principle |
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| CN102764163B (en) | 2015-01-21 |
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