CN206633429U - The 3D printing optical system of monitoring face type in real time - Google Patents
The 3D printing optical system of monitoring face type in real time Download PDFInfo
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- CN206633429U CN206633429U CN201720069967.4U CN201720069967U CN206633429U CN 206633429 U CN206633429 U CN 206633429U CN 201720069967 U CN201720069967 U CN 201720069967U CN 206633429 U CN206633429 U CN 206633429U
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Abstract
It the utility model is related to a kind of 3D printing optical system of the face type of monitoring in real time, including an interferometer, an illuminator, a DMD systems, a couple prism, a CCD systems, a relaying focusing lens and a projection lens, wherein, the projection lens is directed at liquid level, liquid level is corresponding with shaping workpiece, the couple prism is arranged on rear side of projection lens, it is correspondingly arranged respectively with DMD systems, CCD systems and illuminator, the relaying focusing lens are arranged on rear side of couple prism, and the interferometer is arranged on rear side of relaying focusing lens.Compared with prior art, the utility model improves the design of existing photocuring 3D printer optical system, and equipment has on-line checking function, it is possible to achieve more stable forming quality.
Description
Technical field
Rapid three dimensional printing forming field is the utility model is related to, is related to a kind of 3D printer, more particularly to a kind of energy is in fact
When monitor face type 3D printing system.
Background technology
3D printing is What You See Is What You Get, and the model designed from three-dimensional modeling software is directly changed into 3D solid.Tradition
Machining manufacturing technology predominantly subtracts material manufacture, including turning, milling, boring, brill, plane, grinding, polishing etc..General process
It is that processing technician is combined according to drawing from wherein several processing methods, so as to be machined.Each step all can be right
Material is removed, while needs complex designing fixture to carry out auxiliary group of processing.And three-dimensional printing technology belongs to increasing material manufacturing category, one
As need not carry out special frock clamp, only need once in a while change model, increase support zone.It enormously simplify manufacture
Process, while can also quickly prepare complex model.
3D printing technique is broadly divided into SLA, DLP, FDM, SLS, DED, LOM etc..Current common three-dimensional printing technology essence
Degree is generally in hundred micron levels.Many materials can change the optics of material, machinery, acoustics etc. by designing submicrometer structure
Characteristic.Such as photonic crystal, phonon crystal etc..Traditional DLP 3 D-printing Micro stereo lithographies, be with ultraviolet LED or
Mercury lamp illuminates dmd chip, using DMD as digital mask, DMD image is amplified by projection objective, the system projected.
The equipment for also monitoring printing surface type without interferometer on the market at present is released.
Utility model content
In order to solve the above problems, the utility model provides a kind of 3D printing optical system of the face type of monitoring in real time, bag
Include an interferometer, an illuminator, a DMD systems, a couple prism, a CCD systems, a relaying focusing lens and a projection
Camera lens, wherein, the projection lens is directed at liquid level, and liquid level is corresponding with shaping workpiece, and the couple prism is arranged on projection lens
Rear side, it is correspondingly arranged respectively with DMD systems, CCD systems and illuminator, the relaying focusing lens are arranged on couple prism
Rear side, the interferometer are arranged on rear side of relaying focusing lens.
Preferably, above-mentioned optical system carries out face type monitoring and luminance detection while liquid level prints.
Preferably, above-mentioned interference instrument is monochromatic interference instrument or white light interferometer.
Preferably, above-mentioned DMD systems are made up of dmd chip and drive circuit.
Preferably, said lighting system is LED or mercury lamp or laser.
Preferably, above-mentioned couple prism is made up of one piece of semi-transparent semi-reflecting lens and X prisms.
Preferably, above-mentioned projection lens be refraction type, the formula of penetrating of turning back, it is reflective, folding spread out formula microcobjective or reflect
Formula, the formula of penetrating of turning back, reflective, folding diffraction-type projective lens.
Preferably, above-mentioned x prisms are wavelength-division multiplex and polarisation multiplex system.
Preferably, above-mentioned interference instrument uses face on the basis of liquid level, and the optical path difference for monitoring liquid level and workpiece is either relaying
One piece of benchmark of increase is convex or recessed in focusing lens or level crossing, as reference plane.
Compared with prior art, the utility model interference light Cleaning Principle, existing photocuring 3D printer optics is improved
The design of system, equipment cost reduces, and can realize more stable forming quality.
Using liquid level as the plane of reference, the printing surface of the workpiece printed online is detected in real time, can reach supervisory wavelength magnitude
Precision, pass through the electronic fine-grained precision that can further improve monitoring.Common 3D printing optical system can be according to this
The data of utility model principle detection, Real-time Feedback modification printing technology parameter is carried out, so as to prepare high-precision workpiece.Use this
The principle of utility model can prepare sphere, aspherical, free form surface imaging optic element, can also prepare containing micro-structural
Photonic crystal, more high-accuracy nanometer ultra-light ultra-strong material can also be prepared, the vibration isolation noise reduction material of nanostructured can also be prepared
Material etc..
Brief description of the drawings
Fig. 1 is the 3D printing optical system structure schematic diagram of the face type of monitoring in real time provided by the utility model；
Fig. 2 is the interference pattern of the 3D printing optical system detection of the face type of monitoring in real time provided by the utility model；
Fig. 3 is that the 3D printing optical system of the face type of monitoring in real time provided by the utility model improves embodiment schematic diagram；
Fig. 4 is a kind of interferometer principle assumption diagram；
Fig. 5 is X beam cementing prism schematic diagrames；
Fig. 6 is that X closes beam film 1,2 transmittance curve figures；
Fig. 7 is that the 3D printing optical system of the face type of monitoring in real time provided by the utility model improves embodiment schematic diagram.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the utility model, below in conjunction with the accompanying drawings and be embodied
Mode is described in further detail to the utility model.
Embodiment 1
The 3D printing optical system for a kind of face type of monitoring in real time that the present embodiment provides, as shown in figure 1, including an interference
Instrument, an illuminator, a DMD systems, a couple prism, a CCD systems, a relaying focusing lens and a projection lens, its
In, projection lens alignment liquid level, liquid level is corresponding with shaping workpiece, couple prism be arranged on projection lens rear side, respectively with DMD systems
System, CCD systems and illuminator are correspondingly arranged, and relaying focusing lens are arranged on rear side of couple prism, during interferometer is arranged on
On rear side of focusing lens.Optical system carries out face type monitoring and luminance detection while liquid level prints.Interferometer is monochromatic dry
Interferometer or white light interferometer.DMD systems are made up of dmd chip and drive circuit.Illuminator is LED or mercury lamp or laser.Coupling
Prism is closed to be made up of one piece of semi-transparent semi-reflecting lens and X prisms.Projection lens is refraction type, the formula of penetrating of turning back, reflective, folding spread out, and formula is micro-
Object lens either refraction type, the formula of penetrating of turning back, reflective, folding diffraction penetrate formula projective lens.X prisms are wavelength-division multiplex and palarization multiplexing
System.Interferometer uses face on the basis of liquid level, monitors the optical path difference of liquid level and workpiece and either increases in relaying focusing lens
One piece of benchmark is convex or recessed or level crossing, as reference plane.
For the present embodiment in print procedure, interferometer can detect the face type of printing workpiece in real time, and Fig. 2 is the interference pattern of detection
Sample, by Inversion Calculation, the surface topography of institute's printed matter Products is drawn, so that the shape for the exposure figure that makes corrections in real time, gray scale etc..Institute
Detection faces type error is in wavelength magnitude, if the interferometer of 632.8nm wave bands, face type detection error can reach a 150nm left sides
It is right.By digital image processing techniques, detected interference pattern is finely divided, surface precision detection can be made to reach 30nm.
Embodiment 2
As shown in figure 3, being a kind of modified scheme, illuminator is projected on DMD after first 45 ° of speculum,
Return through X beam cementing prisms and be reflected into projection lithography system, project liquid level.Liquid level is after over-illumination, by X beam cementing prisms
CCD camera is backed into, for monitoring the distribution of face exposure intensity in real time.The coherent light of interferometer projection 632.8nm wave bands passes through X
By the face type interface of printing shaping in liquid level after prism, light projection photoetching objective lens, Zygo interferometers are backed into.It is anti-by wavefront
Calculating is drilled, reduces the face type printed.Interferometer can be fizeau interferometer or other kinds of interferometer, wherein
The use of typical interferometer is Zygo interferometers, its wavelength is 632.8nm or using other relevant or partially coherent lights
The interferometer in source.The present embodiment is described with Zygo interferometers.Wherein reference plane can be liquid level, and measured surface is to be molded
Workpiece surface.
As shown in figure 4, it is a kind of enforceable interferometer schematic diagram, light source transmits by 45 ° of speculums, by collimating mirror
Head is into collimated light beam, and by relaying camera lens, adjustment relaying camera lens makes light beam be exported from projection lithography camera lens into directional light.Liquid level can
To regard the sphere of earth radius as, as reference plane, liquid gap is formed with measured workpiece surface, the workpiece refractive index of solidification with
Uncured resin index material is different, because this alunite ear reflex be present in liquid level and Air Interface, resin workpiece interface, therefore
Newton interference fringe can be formed, while it is digital picture to be gathered.
The whole system of the present embodiment performs following operating procedure：
1. illuminator is opened；
The figure that 2.DMD projections currently print；
3.CCD detection liquid levels light exposure, interferometer detect printed face type；
4. being distributed according to present intensity, face type, object module, optimize shape, gray scale of next width picture that makes corrections etc.；
5. next width figure after projection correction, repeats the 3rd step.
In the case study on implementation, the incident combiner projection in three directions is entered resin storage tank by X beam cementing prisms.This example is two
Individual direction incidence beam cementing prism, the 3rd direction is as acquisition window.Film Design is carried out to X beam cementing prisms, one of X is closed
Beam prism optical thin film characteristic can be with as shown below.
Embodiment 3
As shown in figure 4, projection lithography illumination light is projected on DMD after first 45 ° of speculum, conjunction beam is backed into
Prism.Interferometer is directly entered beam cementing prism.530nm lighting sources enter back into beam cementing prism after 45 ° of speculums.Three road light
After beam cementing prism outgoing enters projection lithography system, shaping is exposed in liquid level.Wherein CCD illumination lights, interferometer light edge
Backtracking respectively enters CCD and interferometer.
The whole print system operating procedure of the present embodiment is as follows：
1.DMD projects current printing curve；
2.530nm illuminator is opened；
3.CCD detection faces Luminance Distributions；
4. closing 530nm illuminators, interferometer is opened；
5. interferometer detection ought above type；
6. being distributed according to present intensity, face type, object module, optimize shape, gray scale of next width picture that makes corrections etc.；
Next width figure after projection correction, repeats the 1st step.
Compared with prior art, the utility model simplifies the design of existing photocuring 3D printer optical system, equipment into
This reduction, and more stable forming quality can be realized.
Using liquid level as the plane of reference, the printing surface of the workpiece printed online is detected in real time, can reach supervisory wavelength magnitude
Precision, pass through the electronic fine-grained precision that can further improve monitoring.Common 3D printing optical system can be according to this
The data of utility model principle detection, Real-time Feedback modification printing technology parameter is carried out, so as to prepare high-precision workpiece.Use this
The principle of utility model can prepare sphere, aspherical, free form surface imaging optic element, can also prepare containing micro-structural
Photonic crystal, more high-accuracy nanometer ultra-light ultra-strong material can also be prepared, the vibration isolation noise reduction material of nanostructured can also be prepared
Material etc..
It is understood that for those of ordinary skills, can according to the technical solution of the utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model
Scope of the claims.
Claims (9)
- A kind of 1. 3D printing optical system of the face type of monitoring in real time, it is characterised in that：The 3D printing light of the face type of monitoring in real time System include an interferometer, an illuminator, a DMD systems, a couple prism, a CCD systems, one relaying focusing lens with And a projection lens, wherein, the projection lens is directed at liquid level, and liquid level is corresponding with shaping workpiece, and the couple prism is arranged on On rear side of projection lens, it is correspondingly arranged respectively with DMD systems, CCD systems and illuminator, the relaying focusing lens are arranged on On rear side of couple prism, the interferometer is arranged on rear side of relaying focusing lens.
- 2. the 3D printing optical system of the face type of monitoring in real time according to claim 1, it is characterised in that：The optical system Face type monitoring and luminance detection are carried out while liquid level prints.
- 3. the 3D printing optical system of the face type of monitoring in real time according to claim 1, it is characterised in that：The interferometer is Monochromatic interference instrument or white light interferometer.
- 4. the 3D printing optical system of the face type of monitoring in real time according to claim 1, it is characterised in that：The DMD systems It is made up of dmd chip and drive circuit.
- 5. the 3D printing optical system of the face type of monitoring in real time according to claim 1, it is characterised in that：The illuminator For LED or mercury lamp or laser.
- 6. the 3D printing optical system of the face type of monitoring in real time according to claim 1, it is characterised in that：The couple prism It is made up of one piece of semi-transparent semi-reflecting lens and X prisms.
- 7. the 3D printing optical system of the face type of monitoring in real time according to claim 1, it is characterised in that：The projection lens Refraction type, the formula of penetrating of turning back, it is reflective, folding spread out formula microcobjective either refraction type, the formula of penetrating of turning back, it is reflective, folding diffraction-type Projective lens.
- 8. the 3D printing optical system of the face type of monitoring in real time according to claim 6, it is characterised in that：The X prisms are Wavelength-division multiplex and polarisation multiplex system.
- 9. the 3D printing optical system of the real-time monitoring face type according to one of claim 1-8, it is characterised in that：It is described dry Interferometer uses face on the basis of liquid level, monitors the optical path difference of liquid level and workpiece and either increases by one piece of benchmark in relaying focusing lens Convex or recessed or level crossing, as reference plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720069967.4U CN206633429U (en) | 2017-01-20 | 2017-01-20 | The 3D printing optical system of monitoring face type in real time |
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| CN201720069967.4U CN206633429U (en) | 2017-01-20 | 2017-01-20 | The 3D printing optical system of monitoring face type in real time |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938544A (en) * | 2017-01-20 | 2017-07-11 | 深圳摩方新材科技有限公司 | The 3D printing optical system of face type is monitored in real time |
| CN107756814A (en) * | 2017-11-28 | 2018-03-06 | 上海联泰科技股份有限公司 | Detecting system, method and the 3D printing equipment being applicable |
-
2017
- 2017-01-20 CN CN201720069967.4U patent/CN206633429U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938544A (en) * | 2017-01-20 | 2017-07-11 | 深圳摩方新材科技有限公司 | The 3D printing optical system of face type is monitored in real time |
| CN107756814A (en) * | 2017-11-28 | 2018-03-06 | 上海联泰科技股份有限公司 | Detecting system, method and the 3D printing equipment being applicable |
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Effective date of registration: 20201231 Address after: 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing Patentee after: Chongqing Mofang Technology Co.,Ltd. Address before: 518000 Longhua District, Shenzhen City, Guangdong Province, Area B, 5th floor, No. 118 Jinxiuda Building, Dafu Community, Hunan Province Patentee before: BMF MATERIAL TECHNOLOGY Inc. |