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CN109758123A - A kind of hand held oral scanner - Google Patents

A kind of hand held oral scanner Download PDF

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Publication number
CN109758123A
CN109758123A CN201910240515.1A CN201910240515A CN109758123A CN 109758123 A CN109758123 A CN 109758123A CN 201910240515 A CN201910240515 A CN 201910240515A CN 109758123 A CN109758123 A CN 109758123A
Authority
CN
China
Prior art keywords
array disk
shell
microlens array
gear
pin hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910240515.1A
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Chinese (zh)
Inventor
高祎兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun Songyun Precision Instrument And Equipment Technology Co Ltd
Original Assignee
Changchun Songyun Precision Instrument And Equipment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changchun Songyun Precision Instrument And Equipment Technology Co Ltd filed Critical Changchun Songyun Precision Instrument And Equipment Technology Co Ltd
Priority to CN201910240515.1A priority Critical patent/CN109758123A/en
Publication of CN109758123A publication Critical patent/CN109758123A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of hand held oral scanners, the mouth cavity scanner utilizes conjugate focus imaging technique, the driving synchronous with pinhole array disk of microlens array disk is carried out by synchronous drive device, to realize that the parallel coaxial of microlens array disk and pinhole array disk rotates, cavity interior scanning is completed, has many advantages, such as simple structure and reasonable design, small in size, easy to use.

Description

A kind of hand held oral scanner
Technical field
The present invention discloses the technical field for being related to being copolymerized burnt measurement more particularly to a kind of hand held oral scanner.
Background technique
Conjugate focus imaging technique is the high-new imaging technique developed rapidly the nearly more than ten years, and principle is to utilize to put The detecting pinhole setting the illumination pin hole after light source and placing in front of the detector realizes point illumination and puts focusing-detection altogether, comes from light The light in source is focused on some point of sample focal plane by illuminating the light that pin hole is launched, and the fluorescence imaging which is emitted exists In detecting pinhole, the detected pin hole of any transmitting light other than the point stops, and illuminates pin hole and detecting pinhole to illuminated point It or is conjugation for detected point, therefore detected point is confocal point.
Advantage based on conjugate focus imaging technique has been applied to cytology, microbiology, Developmental Biology, heredity at present It learns, in the research work of Neurobiology and the subjects such as physiology and pathology, becomes modern scientific research and scanning imagery Important tool.But since the volume of existing co-focusing imaging equipment is larger, oral cavity can not be applied to and scanned.
Therefore, a kind of mouth cavity scanner using conjugate focus imaging technique how is researched and developed, becomes that people are urgently to be resolved to be asked Topic.
Summary of the invention
In consideration of it, the mouth cavity scanner does not use only altogether the present disclosure provides a kind of hand held oral scanner Focal imaging technology, and it is small in size, it is easy to use.
Technical solution provided by the invention, specifically, a kind of hand held oral scanner, the scanner include: shell 1, Broadband illumination device 2, microlens array disk 3, pinhole array disk 4, synchronous drive device 5, the first deflecting mirror 6, the first object lens 7, Second deflecting mirror 8, the second object lens 9 and spectral detector 10;
Along the direction of propagation of light, the broadband illumination device 2, microlens array disk 3, the first deflecting mirror 6, pin hole battle array Column disk 4, the first object lens 7 and the second deflecting mirror 8 are sequentially coaxially set to the inside of the shell 1;
The microlens array disk 3 has multiple lenticules of rule arrangement, and the pinhole array disk 4 has rule arrangement Multiple pin holes, the lenticule and the pin hole correspond, and the microlens array disk 3 and the pinhole array disk 4 The distance between be equal to the microlens array disk 3 focal length;
The synchronous drive device 5 is located at the inside of the shell 1, and there are two the tools of synchronous drive device 5 drives end, Two driving ends are connect with the microlens array disk 3 and the pinhole array disk 4 respectively, the microlens array disk 3 With the pinhole array disk 4 under the driving of the synchronous drive device 5, parallel coaxial rotation can be carried out;
First deflecting mirror 6 is the deflecting mirror with half-reflection and half-transmission function;
Second object lens 9 and spectral detector 10 are respectively positioned on the inside of the shell 1, and 9 He of the second object lens The spectral detector 10 is set gradually along the direction of propagation through 6 reflection light of the first deflecting mirror.
It is preferred that the synchronous drive device 5 includes: dual-axle motor 51, on two output shafts of the dual-axle motor 51 It is respectively installed with gear 52;
The microlens array disk 3 includes: lenticule gear shaft 31 and microlens array 32, the lenticule gear shaft 31 are internally provided with mounting hole, and the outside of the lenticule gear shaft 31 is circumferentially arranged to be had and 51 side of dual-axle motor The gear teeth of output shaft gear engagement, the microlens array 32 are fixedly installed in the mounting hole of the lenticule gear shaft 31 It is interior;
The pinhole array disk 4 includes: pin hole gear shaft 41 and pinhole array 42, the inside of the pin hole gear shaft 41 Be provided with mounting hole, the outside of the pin hole gear shaft 41 is circumferentially arranged have on 51 other side output shaft of dual-axle motor The gear teeth of gear engagement, the pinhole array 42 are fixedly installed in the mounting hole of the pin hole gear shaft 41.
Further preferably, the broadband illumination device 2 includes: fixed frame 21, off-axis parabolic mirror 22, fiber coupling Device 23, light source 24 and optical fiber 25;
The off-axis parabolic mirror 22 is installed on the fixed frame 21;
The light source 24 is multispectral light source, positioned at the front end of the light coupling device 23;
The input terminal of the optical fiber 25 is of coupled connections with the light coupling device 23, and the output end of the optical fiber 25 is located at institute In the focus for stating off-axis parabolic mirror 22.
Further preferably, the broadband illumination device 2 further include: micromatic setting 26;
The bottom surface of the shell 1 is provided with the slideway of perforation or more along its length;
The micromatic setting 26 includes: sliding block 261 and stay bolt 262;
The two sides of the sliding block 261 are respectively arranged with the sliding slot 2611 being engaged with 1 middle slideway of shell, in the sliding block The screw hole 2612 of perforation or more is provided on 261;
The stay bolt 262 is thread through the screw hole 2612 on the sliding block 261, and one end is located inside the shell 1, separately One end is located at the outside of the shell 1, and stay bolt 262 is located at rotation on one end end face inside the shell 1 and is provided with U-shaped card 2621, output end of the U-shaped card 2621 for the optical fiber 25 is fixed.
Further preferably, the bottom surface of two side chutes 2611 is provided with and is connected to spiral shell with the sliding slot 2611 in the sliding block 261 Hole is equipped with fastening screw in the screw hole.
Further preferably, the light source 24 is any one in incandescent lamp, LED light and halogen lamp.
Further preferably, the off-axis parabolic mirror 22 is compression molding parabolic lens or Single point diamond turning o molding Parabolic lens.
Hand held oral scanner provided by the invention is carried out using conjugate focus imaging technique by synchronous drive device Microlens array disk driving synchronous with pinhole array disk, to realize that the parallel coaxial of microlens array disk and pinhole array disk turns It is dynamic, cavity interior scanning is completed, has many advantages, such as simple structure and reasonable design, small in size, easy to use.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that the present invention discloses a kind of hand held oral scanner that embodiment provides;
Fig. 2 is that the present invention discloses microlens array disk, pin hole battle array in a kind of hand held oral scanner that embodiment provides The structural schematic diagram of column disk and synchronous drive device;
Fig. 3 is that the present invention discloses microlens array disk, pin hole battle array in a kind of hand held oral scanner that embodiment provides The scheme of installation of column disk and synchronous drive device;
Fig. 4 is that the structure of the invention for disclosing a kind of hand held oral scanner middle width strip lighting device that embodiment provides is shown It is intended to;
Fig. 5 is the structural representation that the present invention discloses micromatic setting in a kind of hand held oral scanner that embodiment provides Figure.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended The example of device being described in detail in claims, some aspects of the invention are consistent.
It is a kind of hand held oral scanner that the present embodiment provides referring to Fig. 1, the scanner is mainly by shell 1, width Band lighting device 2, microlens array disk 3, pinhole array disk 4, synchronous drive device 5, the first deflecting mirror 6, the first object lens 7, the Two deflecting mirrors 8, the second object lens 9 and spectral detector 10 are constituted, wherein along the direction of propagation of light, broadband illumination device 2, microlens array disk 3, the first deflecting mirror 6, pinhole array disk 4, the first object lens 7 and the second deflecting mirror 8 are sequentially coaxially arranged In the inside of shell 1, microlens array disk 3 has multiple lenticules of rule arrangement, and pinhole array disk 4 has rule arrangement Multiple pin holes, lenticule and pin hole correspond, and the distance between microlens array disk 3 and pinhole array disk 4 are equal to micro- The focal length of lens array disk 3, synchronous drive device 5 are located at the inside of shell 1, and the tool of synchronous drive device 5 is there are two driving end, and two Driving end is connect with microlens array disk 3 and pinhole array disk 4 respectively, and microlens array disk 3 drives with pinhole array disk 4 synchronous Under the driving of dynamic device 5, parallel coaxial rotation can be carried out, the first deflecting mirror 6 is the deflecting mirror with half-reflection and half-transmission function, second Object lens 9 and spectral detector 10 are respectively positioned on the inside of shell 1, and the second object lens 9 and spectral detector 10 are along inclined through first The direction of propagation of 6 reflection light of tilting mirror is set gradually.
Above-mentioned hand held oral scanner is as follows in the principle and process for carrying out oral cavity scanning: the transmitting of broadband illumination device The entire microlens array disk of beam lighting, light beam pass through the first deflecting mirror by each lenticule in microlens array disk, focus Onto pinhole array disk, wherein the focusing focus of each lenticule is respectively positioned on the corresponding pin hole center of the lenticule, focuses on needle Light beam on hole array disk dissipates after passing through pin hole, and by forming convergent beam after the first object lens, convergent beam is by the second deflection Mirror is deflected towards scanning object surface direction, and is focused again in scanning object surface A.It is entire wide due to the refraction action of light With the light beam emitted in lighting device, the light beam of only very narrow spectral region is focused in scanning object surface A, this partial spectrum Range is defined as effective spectral range, and before or after the light beam focusing scanning object surface A of other most of spectral regions Corresponding position, this partial spectrum range is defined as invalid spectral region.Effective spectral range and invalid spectral region are corresponding Light beam is reflected by scanning object surface A, and the reflected beams are deflected by the second deflecting mirror towards pinhole array disk direction, passes through first Convergent beam is formed after object lens, the pin hole center that convergent beam focuses on pinhole array disk has due to the iris action of pin hole The corresponding light beam of effect spectral region passes through pin hole, and corresponding most of intercepted by pin hole of light beam of invalid spectral region is filtered Fall.The corresponding light beam of effective spectral range dissipates after passing through pin hole, and divergent beams are by the first deflecting mirror towards spectral detector side To deflection, by forming the light beam to be detected for containing effective spectral information after the second object lens, last light beam to be detected projects light On the test surface for composing detector, the corresponding wavelength of effective spectrum that is detected later according to spectral detector determines scanning object The location information of the single measurement point of surface A only lists one pair of them lenticule and the corresponding light beam of pin hole in the above process Communication process, there are a series of lenticules by rule arrangement on microlens array disk, and corresponding there are one on pinhole array disk For series by the pin hole of rule arrangement, lens and pin hole one-to-one correspondence, scanner are during the scanning process, same by synchronous drive device When synchronous driving microlens array disk and pinhole array disk so that microlens array disk and pinhole array armor are done around central axis The location information scanning of scanning object surface region is realized in parallel coaxial rotation.
In order to effectively solve the problems, such as that co-focusing imaging equipment volume is big, present solution provides a kind of novel synchronous drivings Device, the program in general, using transmission scheme of the twin shaft output motor in conjunction with gear, realize microlens array disk and needle The parallel coaxial of hole array disk rotates, compact-sized, compact, so that being swept using the hand held oral for being copolymerized burnt measuring technique It retouches instrument volume to greatly reduce, the occasion of the narrow spaces such as oral cavity can be suitable for.
Specifically, referring to fig. 2, which includes dual-axle motor 51, in two outputs of dual-axle motor 51 Be respectively installed with gear 52 on axis, cooperate the structure of above-mentioned synchronous drive device 5, referring to fig. 2, microlens array disk 3 mainly by Lenticule gear shaft 31 and microlens array 32 are constituted, and mounting hole are internally provided in lenticule gear shaft 31, micro- The outside of mirror gear shaft 31 is circumferentially arranged the gear teeth engaged with 51 side output shaft gear of dual-axle motor, microlens array 32 are fixedly installed in the mounting hole of lenticule gear shaft 31, and pinhole array disk 4 is mainly by pin hole gear shaft 41 and pin hole battle array Column 42 constitute, be internally provided with mounting hole in pin hole gear shaft 41, the outside of pin hole gear shaft 41 it is circumferentially arranged have with The gear teeth of 51 other side output shaft gear of dual-axle motor engagement, pinhole array 42 are fixedly installed in the installation of pin hole gear shaft 41 In hole.It is designed by above-mentioned structure, passes through the lenticule in motor both ends output shaft gear and difference microlens array disk Pin hole gear shaft engagement in gear shaft and pinhole array disk is realized that microlens array disk is synchronous with pinhole array disk and is driven It is dynamic, and then realize the parallel coaxial rotation of microlens array disk and pinhole array disk.
In actual contrived experiment, above-mentioned dual-axle motor and microlens array disk and pinhole array disk for convenience Installation, is provided below a kind of mounting structure that inventor specifically designs, for reference.Referring to Fig. 3, above-mentioned dual-axle motor is designed as It is made of motor cabinet 53 and 54 two parts of dual-axle motor main body, using detachable between motor cabinet 53 and mouth cavity scanner shell 1 The mode of rigid body connection connects, and dual-axle motor main body 54 is mounted on inside motor cabinet 53, axis and microlens array disk and needle The axis that hole array disk is formed is parallel, and the gear 52 being sleeved on 54 two sides output shaft of dual-axle motor main body is respectively positioned on motor cabinet 53 Interior, to realize the limit to two sides output shaft gear 52, equal fixing sleeve is equipped with the first limit outside the both ends of each gear 52 Position bearing 56, and the outer ring of the first Limit Bearing 56 is fixedly connected with motor cabinet 53, lenticule gear in microlens array disk 3 Gear in the gear teeth and pinhole array disk 4 outside axis 31 outside pin hole gear shaft 41 is each passed through motor cabinet 53 and is located at correspondence It between two Limit Bearings 56, is engaged with corresponding gear 52, outside and pin hole gear shaft 41 in lenticule gear shaft 31 Outside is set with the second Limit Bearing 33/43, and the outer ring of the second Limit Bearing 33/43 is solid with mouth cavity scanner shell 1 Fixed connection.
For the multispectral collimation of real mouth cavity scanner middle width strip lighting device, and collimation is improved, the present embodiment A kind of broadband illumination apparatus structure is provided, referring to fig. 4, the broadband illumination device 2 is mainly anti-by fixed frame 21, off axis paraboloid mirror It penetrates mirror 22, fiber coupler 23, light source 24 and optical fiber 25 to constitute, wherein above-mentioned fixed frame 21, off-axis parabolic mirror 22, fiber coupler 23, light source 24 and optical fiber 25 are installed in the shell of mouth cavity scanner, and fixed frame 11 is fixedly mounted on On the top surface of enclosure interior, off-axis parabolic mirror 22 is installed on fixed frame 21, is suspended in shell 1, and light source 24 uses Multispectral light source is fixedly mounted in the internal side wall of shell 1, positioned at the front end of light coupling device 23, the input terminal of optical fiber 25 It is of coupled connections with light coupling device 23, the output end of optical fiber 25 is located in the focus of off-axis parabolic mirror 2.
The concrete operating principle of above-mentioned broadband illumination device are as follows: after light source emits beam, received, inputted by light coupling device Into optical fiber, it is transmitted through the fiber to the focal point of off-axis parabolic mirror, is irradiated on off-axis parabolic mirror and reflects Collimated ray is formed afterwards to issue, the broadband illumination device by optical fiber with off-axis parabolic mirror in conjunction with, real multispectral collimation, Has many advantages, such as collimation height, center is without blocking.
In order to realize that fiber-optic output has fine adjustment function both horizontally and vertically, it is convenient for adjusting focus position when adjustment It sets, as the improvement of technical solution, micromatic setting 26 is provided in broadband illumination device, in the bottom surface of shell 1 along length side To the slideway for being provided with perforation or more, referring to Fig. 5, which is made of sliding block 261 and stay bolt 262, wherein sliding The two sides of block 261 are respectively arranged with the sliding slot 2611 being engaged with 1 middle slideway of shell, and perforation or more is provided on sliding block 261 Screw hole 2612, stay bolt 262 are thread through the screw hole 2612 on sliding block 261, and one end is located inside shell 1, and the other end is located at shell The outside of body 1, wherein stay bolt 262, which is located on one end end face inside shell 1, is rotatably equipped with U-shaped card 2621, the U-shaped card 2621 output ends for being used for optical fiber 5 are fixed.
When the broadband illumination device is installed and used, the output end of optical fiber and the focus of off-axis parabolic mirror exist Perhaps when deviation, adjustable sliding block is slided with respect to the slideway on shell, realizes the adjustment of fiber-optic output horizontal position, can also To rotate stay bolt, by its being threadedly engaged with sliding block, the adjustment of fiber-optic output vertical direction is realized, to ensure that optical fiber is defeated The outlet moment is maintained at the focal point of off-axis parabolic mirror.
Position between sliding is fixed after carrying out position adjustment in order to facilitate sliding block 261, as the improvement of technical solution, The bottom surface of two side chutes 2611, which is provided with, in sliding block 261 is connected to screw hole with sliding slot 2611, and fastening screw is equipped in screw hole. When needing to carry out slide position adjustment, fastening screw is unscrewed first, after then adjusting sliding block to appropriate location, by fastening screw It screws and offsets with the side wall of slideway two sides, and then realize the fixation of slide position.
Above-mentioned light source 24 can select any one in incandescent lamp, LED light and halogen lamp, as multispectral light source; Off-axis parabolic mirror 22 can select compression molding parabolic lens or Single point diamond turning o molding parabolic lens
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.

Claims (7)

1. a kind of hand held oral scanner characterized by comprising shell (1), broadband illumination device (2), microlens array Disk (3), pinhole array disk (4), synchronous drive device (5), the first deflecting mirror (6), the first object lens (7), the second deflecting mirror (8), Second object lens (9) and spectral detector (10);
Along the direction of propagation of light, the broadband illumination device (2), microlens array disk (3), the first deflecting mirror (6), pin hole Array disk (4), the first object lens (7) and the second deflecting mirror (8) are sequentially coaxially set to the inside of the shell (1);
The microlens array disk (3) has multiple lenticules of rule arrangement, and the pinhole array disk (4) has rule arrangement Multiple pin holes, the lenticule and the pin hole correspond, and the microlens array disk (3) and the pinhole array disk The distance between (4) it is equal to the focal length of the microlens array disk (3);
The synchronous drive device (5) is located at the inside of the shell (1), and there are two drivings for synchronous drive device (5) tool End, two driving ends are connect with the microlens array disk (3) and the pinhole array disk (4) respectively, the lenticule Array disk (3) and the pinhole array disk (4) can carry out parallel coaxial rotation under the driving of the synchronous drive device (5);
First deflecting mirror (6) is the deflecting mirror with half-reflection and half-transmission function;
Second object lens (9) and spectral detector (10) are respectively positioned on the inside of the shell (1), and second object lens (9) it is set gradually with the spectral detector (10) along the direction of propagation through the first deflecting mirror (6) reflection light.
2. hand held oral scanner according to claim 1, which is characterized in that the synchronous drive device (5) includes: double Spindle motor (51) is respectively installed with gear (52) on two output shafts of the dual-axle motor (51);
The microlens array disk (3) includes: lenticule gear shaft (31) and microlens array (32), the lenticule gear Axis (31) is internally provided with mounting hole, and the outside of the lenticule gear shaft (31) is circumferentially arranged to be had and the dual-axle motor (51) gear teeth of side output shaft gear engagement, the microlens array (32) are fixedly installed in the lenticule gear shaft (31) in mounting hole;
The pinhole array disk (4) includes: pin hole gear shaft (41) and pinhole array (42), the pin hole gear shaft (41) It is internally provided with mounting hole, the outside of the pin hole gear shaft (41) is circumferentially arranged to be had and the dual-axle motor (51) other side The gear teeth of output shaft gear engagement, the pinhole array (42) are fixedly installed in the mounting hole of the pin hole gear shaft (41) It is interior.
3. hand held oral scanner according to claim 1, which is characterized in that the broadband illumination device (2) includes: solid Determine frame (21), off-axis parabolic mirror (22), fiber coupler (23), light source (24) and optical fiber (25);
The off-axis parabolic mirror (22) is installed on the fixed frame (21);
The light source (24) is multispectral light source, is located at the front end of the light coupling device (23);
The input terminal of the optical fiber (25) is of coupled connections with the light coupling device (23), and the output end of the optical fiber (25) is located at In the focus of the off-axis parabolic mirror (22).
4. hand held oral scanner according to claim 3, which is characterized in that the broadband illumination device (2) further include: Micromatic setting (26);
The bottom surface of the shell (1) is provided with the slideway of perforation or more along its length;
The micromatic setting (26) includes: sliding block (261) and stay bolt (262);
The two sides of the sliding block (261) are respectively arranged with the sliding slot (2611) being engaged with the shell (1) middle slideway, in the cunning The screw hole (2612) of perforation or more is provided on block (261);
The stay bolt (262) is thread through the screw hole (2612) on the sliding block (261), and one end is located in the shell (1) Portion, the other end are located at the outside of the shell (1), and stay bolt (262), which is located on the internal one end end face of the shell (1), to be rotated It is provided with U-shaped card (2621), output end of the U-shaped card (2621) for the optical fiber (25) is fixed.
5. hand held oral scanner according to claim 3, which is characterized in that two side chutes in the sliding block (261) (2611) bottom surface, which is provided with, is connected to screw hole with the sliding slot (2611), is equipped with fastening screw in the screw hole.
6. being suitable for being copolymerized the light supply apparatus of burnt mouth cavity scanner according to claim 3, which is characterized in that the light source It (24) is any one in incandescent lamp, LED light and halogen lamp.
7. being suitable for being copolymerized the light supply apparatus of burnt mouth cavity scanner according to claim 3, which is characterized in that the off-axis throwing Parabolic mirror (22) is that compression molding parabolic lens or Single point diamond turning o form parabolic lens.
CN201910240515.1A 2019-03-28 2019-03-28 A kind of hand held oral scanner Pending CN109758123A (en)

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Cited By (3)

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CN113648094A (en) * 2021-08-11 2021-11-16 苏州喆安医疗科技有限公司 Split type oral cavity digital impression instrument
CN114367008A (en) * 2022-01-28 2022-04-19 中国人民解放军北部战区总医院 Medicine device is spouted with spouting in nursing of oral cavity maxillofacial surgery
WO2023142455A1 (en) * 2022-01-28 2023-08-03 北京奇禹科技有限公司 Multispectral image recognition method and apparatus, storage medium, electronic device and program

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