CN108501356A - A kind of 3D printing system - Google Patents
A kind of 3D printing system Download PDFInfo
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- CN108501356A CN108501356A CN201810250763.XA CN201810250763A CN108501356A CN 108501356 A CN108501356 A CN 108501356A CN 201810250763 A CN201810250763 A CN 201810250763A CN 108501356 A CN108501356 A CN 108501356A
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- convex lens
- display device
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- printing system
- real image
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a kind of 3D printing system, which includes：Display device, display device is for showing the first image；Optical imaging device, optical imaging device is located at the light emission side of display device, and includes at least the first convex lens, and the first focal length of convex lens is f1, and display device has object distance s1, s1 ＞ f1 relative to the first convex lens；Photo-curing material, the first image is by optical imaging device at the first real image in the predeterminable area of photo-curing material.By the way that optical imaging device is arranged between display device and photo-curing material, which can form the first real image and make photo-curing material solidification in predeterminable area technical solution of the present invention, carry out 3D printing.The size and resolution ratio that the first real image can be adjusted by optical imaging device, on the basis of realizing the whole face 3D printing of high working efficiency, without display device is needed to change, the mode for adjusting stamp with the size and precision is simple and fast, and cost is relatively low.
Description
Technical field
The present invention relates to 3D printing technique fields, more specifically, being related to a kind of 3D printing system.
Background technology
3D printing technique is designed a model as source with Computerized three-dimensional, discrete by software hierarchy to be with numerical control molding
System is carried out the special materials such as metal powder, ceramic powders, plastics, cell tissue in the way of laser beam, hot melt nozzle etc.
Successively accumulation is cohered, and entity products are produced in final superposition molding.Pass through the mechanical processings such as mold, turnning and milling with traditional manufacture
Mode carries out shaping raw material, cut and final production finished product is different, and 3D solid is become several two dimensions by 3D printing
Plane is produced by being superimposed to material processing and successively, greatly reduces the complexity of manufacture.This Digitized manufacturing mould
Formula does not need complicated technique, does not need huge lathe, does not need numerous manpowers, directly from computer graphics data just
Produce the part of any shape so that the manufacturing is able to extend to wider array of production crowd range so that 3D printing is extensive
Be applied to medical treatment, education and the numerous areas such as automobile.
With reference to figure 1, Fig. 1 is a kind of principle schematic of traditional 3D printing technique, and liquid photosensitive resin 12 is located at reagent trough
In 13, reagent trough 13 is placed horizontally at X/Y plane, and control ultraviolet laser 11 by computer scans on X/Y plane so that examination
Liquid photosensitive resin 12 in agent slot 13 cures, and forms the figure in a section, and lifting platform 14 is moved in Z axis forward direction, often completed
The solidification in one section, lifting platform 14 move down setpoint distance, until completing the print job of entire device 15 to be printed.
Traditional 3D printing technique is printed point by point using single laser, and working efficiency is slower, and needs to swash by ultraviolet
Light device realizes the solidification of liquid photosensitive resin, and the cost of ultraviolet laser is higher.
Invention content
To solve the above-mentioned problems, technical solution of the present invention provides a kind of 3D printing system, improves work efficiency, drop
Low cost.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of 3D printing system, including：
Display device, the display device is for showing the first image；
Optical imaging device, the optical imaging device is located at the light emission side of the display device, and includes at least first
There is focal length f1, the display device to have object distance s1 relative to first convex lens for convex lens, first convex lens, and
S1 ＞ f1；
Photo-curing material, described first image passes through the optical imaging device, in the pre- of the photo-curing material
If at the first real image in region.
Optionally, in above-mentioned 3D printing system, the size of first real image reduces N relative to described first image
Times, wherein N ＞ 1.
Optionally, in above-mentioned 3D printing system, first convex lens is disposed adjacent with the display device, wherein
S1 ＞ 2*f1.
Optionally, in above-mentioned 3D printing system, described first image passes through first convex lens, described photosensitive solid
Change in the predeterminable area of material into first real image.
Optionally, in above-mentioned 3D printing system, the optical imaging device further includes second convex lens, and described
Two convex lenses are identical as the optical axis of the first convex lens, and second convex lens is located at first convex lens and the sense
Between photo-curing material；
First real image is formed via second convex lens in the predeterminable area of the photo-curing material；
Second convex lens has focal length f2, and the image distance of first real image is 2*f2.
Optionally, in above-mentioned 3D printing system, on the optical axis direction of second convex lens, first convex lens
The distance between described second convex lens is
Optionally, in above-mentioned 3D printing system on the optical axis direction of first convex lens, first convex lens
Physical spatial location relative to the display device is adjustable.
Optionally, the photo-curing material described in above-mentioned 3D printing system is located in photosensitive slot；
The 3D printing system further includes bogey, and the bogey is used to carry described photo-curing after curing
Material.
Optionally, the display device described in above-mentioned 3D printing system includes：
Liquid crystal display panel and backlight module, the backlight module are located at the incident side of the liquid crystal display panel；Its
In,
The backlight module includes backlight, and the wavelength of the backlight is 385nm-420nm, including endpoint value.
Optionally, the backlight module described in above-mentioned 3D printing system further includes positioned at the liquid crystal display panel and described
Fresnel diaphragm between backlight and/or diffusion sheet.
By foregoing description it is found that the 3D printing system that technical solution of the present invention provides includes：Display device, the display
Device is for showing the first image；Optical imaging device, the optical imaging device are located at the light emission side of the display device, and
Including at least the first convex lens, first convex lens has focal length f1, and the display device is relative to first convex lens
With object distance s1, and s1 ＞ f1；Photo-curing material, described first image passes through the optical imaging device, described photosensitive
At the first real image in the predeterminable area of curing materials.Technical solution of the present invention is by between display device and photo-curing material
Optical imaging device is set, which can form the first real image and preset photo-curing material in the predeterminable area
Material solidification, carries out 3D printing.The size and resolution ratio that first real image can be adjusted by the optical imaging device,
On the basis of the whole face 3D printing for realizing high working efficiency, without display device is needed to change, the mode of stamp with the size and precision is adjusted
Simple and fast, cost is relatively low.
Description of the drawings
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 technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of principle schematic of traditional 3D printing technique；
Fig. 2 is a kind of principle schematic of 3D printing；
Fig. 3 is a kind of structural schematic diagram of 3D printing system provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another 3D printing system provided in an embodiment of the present invention；
Fig. 5 provides a kind of structural schematic diagram of display device for the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As stated in the background art, existing 3D printing method is printed point by point generally by single ultraviolet laser,
Although laser energy is higher, deep ultraviolet light printing can be done, cured product strength and toughness are higher, the resolution printed point by point
Rate is high, and printed matter Products exquisiteness is good, but needs to provide light source using laser system, and equipment cost is high, and device fabrication is complicated,
The solidification by ultraviolet laser realization liquid photosensitive resin is needed, the time-write interval is very long, is needed with the moon when printing larger object
The accumulative time, working efficiency is slower, and the cost of ultraviolet laser is higher so that the application threshold that 3D is beaten is excessively high, limits 3D
The extensive use of printing technique.
In order to improve printing effect, a kind of mode is passed through as shown in Fig. 2, Fig. 2 is a kind of principle schematic of 3D printing
It is carried out as the light source of 3D printing system using the backlight module 21 and liquid crystal display panel 22 of outgoing near ultraviolet short-wave band
Printing.Liquid crystal display panel 22 is emitted backlight with backlight module 21 and is emitted near ultraviolet short-wave band while showing image, closely
Ultraviolet short-wave band makes liquid photosensitive resin cure to irradiate the liquid photosensitive resin in liquid photosensitive resin slot 23, after solidification
Liquid photosensitive resin be fixed on finished article supporting plate 24.Liquid crystal display panel 22 can be A-Si (non-crystalline silicon) panel, system
It is relatively low to make cost.When carrying out 3D printing, the backlight of near ultraviolet short-wave band, liquid crystal display panel are provided by backlight module 21
22 using a certain section of the backlight display object of being printed figure while be emitted near ultraviolet short-wave band, viewing area correspond to
The position of the figure has the outgoing of near ultraviolet short-wave band, planless viewing area to be emitted without near ultraviolet short-wave band.Liquid photosensitive
Photosensitive material, curing molding after photosensitive material is irradiated by the corresponding light of the figure are placed in resin storage tank 23.It completes
After the figure solidification in one section, mobile finished article supporting plate 24, the figure that liquid crystal display panel switches next section is shown,
The figure solidification that aforesaid operations complete another section, constantly repeatedly aforesaid operations are repeated, entire 3D printing process is completed.
Although aforesaid way is used for 3D printing system using liquid crystal display panel as light shield, relative to single ultraviolet sharp
The mode of light device printed point by point effectively increases the working efficiency of 3D printing and reduces the cost of 3D printing, still, should
The stamp with the size of mode is 1 with the image size that liquid crystal display panel is shown:1, printing precision is significantly limited by
The resolution ratio of liquid crystal display panel.Currently, minimum 100 μm that liquid crystal display panel may be implemented, high-precision 3D is beaten
Print, needs precision prescribed to reach 50 μm, the manufacture craft of available liquid crystal display panel cannot be satisfied the required precision, can only pass through
Single laser prints point by point.
By foregoing description it is found that adjusting the size or precision of printed matter Products if necessary, liquid crystal display is needed replacing
Panel is realized, on the one hand, the cost for replacing liquid crystal display panel is higher, and on the other hand, existing liquid crystal display panel is limited
In the limitation of current manufacture craft, the resolution ratio and size of liquid crystal display panel can not be more than the extreme value of existing manufacture craft
(including maximum value and minimum value).
To solve the above-mentioned problems, an embodiment of the present invention provides a kind of 3D printing systems, by display device and sense
Optical imaging device is set between photo-curing material, and the first image which can be shown based on display device exists
By photo-curing material solidification in predeterminable area, 3D printing is carried out.The big of the first real image can be adjusted by optical imaging device
Small and resolution ratio, without display device is needed to change, adjusts printing ruler on the basis of realizing the whole face 3D printing of high working efficiency
Very little and precision mode is simple and fast, and cost is relatively low.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
With reference to figure 3, Fig. 3 is a kind of structural schematic diagram of 3D printing system provided in an embodiment of the present invention, the 3D printing system
System includes：Display device 30, display device 30 is for showing the first image A；Optical imaging device 35, optical imaging device 35
In the light emission side of display device 30, and the first convex lens 36 is included at least, the first convex lens 36 has focal length f1, display device 30
There is object distance s1, and s1 ＞ f1 relative to the first convex lens 36 so that the first lens shown based on display device 30 first
The corresponding light of image A forms real image；Photo-curing material C, the first image crosses optical imaging device 35 through A, photo-curing
At the first real image B in the predeterminable area of material C.
Display device 30 may include liquid crystal display panel 32 and backlight module 31, and backlight module 31, which is located at, answers display panel
32 incident side, photosensitive material C are located at the light emission side of liquid crystal display panel 32.Backlight module 31 includes backlight.Backlight
Wavelength is 385nm-420nm, including endpoint value.
The structure of display device 30 can be using as shown in figure 5, Fig. 5 provides a kind of structure of display device as the embodiment of the present invention
Schematic diagram, in order to ensure that the uniformity and collimation of 31 emergent ray of backlight module, backlight module 31 further include being located at liquid crystal
Show that functional layer 102b between panel 32 and backlight, functional layer 102b include Fresnel diaphragm and/or diffusion sheet.Specifically,
Backlight module 31 includes light guide plate 102d, and functional layer 102b is located at light guide plate 102d towards liquid crystal display panel towards liquid crystal display
The side of panel 32.Light guide plate 102d is provided with backlight 102a away from the side of liquid crystal display panel 32.
Optionally, backlight 102a may include the LED102c of multiple dot matrix arrangements.Backlight 102a is emitted 385nm-
The near ultraviolet short-wave band of 420nm.Backlight 102a further includes visible LED, for being emitted visible light.Visible LED can be with
It is white light LEDs or blue-ray LED.Liquid crystal display panel 32 shows the figure in a certain section for the object of being printed based on visible light
While be emitted near ultraviolet short-wave band, viewing area correspond to the figure position have near ultraviolet short-wave band outgoing, it is planless
Viewing area is emitted without near ultraviolet short-wave band.
Specifically, the wavelength of light of backlight outgoing can be 385nm, 405nm or 420nm.Display device 30 is liquid
Crystal device, in this way can be by using the backlight module 31 of outgoing near ultraviolet short-wave band so that display device 30 is being shown
It is emitted near ultraviolet short-wave band light when the first image and is used for 3D printing.
General photosensitive material C is liquid photosensitive resin.Photosensitive material C is located in photosensitive slot 33.3D printing system is also wrapped
Bogey 34 is included, bogey 34 is used to carry the photo-curing material after solidification.Photosensitive material C after solidification, which is fixed on, to be held
It carries and sets 34 surfaces, bogey 34 can move on the light direction of illumination of display device 30.It is horizontal to set photosensitive slot 33
It places, in three-dimensional cartesian coordinate system, X/Y plane is parallel to horizontal plane, and Z axis is perpendicular to horizontal face-down.
In mode shown in Fig. 3, display device 30 is located at immediately below photosensitive material C, irradiates straight up, other embodiment party
In formula, the surface that display device 30 is located at photosensitive material C can also be set, irradiated straight down, or be located at photosensitive material C
Side, horizontal irradiation.Different direction of illuminations need the moving direction for being correspondingly arranged bogey 34.
In 3D printing system of the embodiment of the present invention, optical imaging device 35, at real image principle, is based on display using convex lens
The first image that device 30 is shown forms the first real image B and projects the predeterminable area of photosensitive material C, and then can so that it is solid
Change, to realize 3D printing.The size and resolution ratio that the first real image can be adjusted by optical imaging device are realizing high work
On the basis of the whole face 3D printing of efficiency, without display device is needed to change, the mode for adjusting stamp with the size and precision is simple and fast, at
This is relatively low.Specifically, the first real image can be adjusted by adjusting the image distance and object distance of convex lens in optical imaging device 35
Size can adjust stamp with the size and precision.
Optionally, the first real image B sizes reduce N times relative to the first image A, wherein N ＞ 1.In this way, light can be passed through
Learning the first real image B that the formation of imaging device 35 is reduced will show under the premise of not changing 30 resolution ratio of display device and size
30 corresponding image information of device narrows down in smaller area, and printing precision is improved N times, improves printing precision, while can
To reduce stamp with the size.In other embodiment, the first real image B sizes can also be set and amplify N times relative to the first image A,
In this way, widened first real image can be formed by optical imaging device 35, do not changing 30 resolution ratio of display device and size
Under the premise of, 30 corresponding image information of display device is expanded in the area of bigger, stamp with the size is increased.
Optionally, the first convex lens 36 of setting is disposed adjacent with display device 30, wherein s1 ＞ 2*f1.Due to first convex
Lens 36 and display device 30 are disposed adjacent, as s1 ＞ 2*f1, on the one hand, can ensure s1 ＞ f1 so that the first convex lens
36 form real image based on the first image A, on the other hand, under the premise of ensureing s1 ＞ f1, the first convex lens 36 can be made to have
The pitch space that oriented display device 30 moves, to adjust the object distance and image distance of the first lens.
It sets the first convex lens 36 and it is formed by between real image with the first image distance s1 ', s1 ≠ s1 '.If s1 ' is small
In s1, then the first convex lens 36 forms the real image reduced, if s1 ' is more than s1, the first convex lens 36 forms the real image of amplification.
By the way that s1 ' and s1 is arranged, the first convex lens 36 of control forms amplification or the minification of real image.
The optical center distance for setting display surface to the first convex lens 36 of display device 30 is s1, can set s1=3f1, convex
Lens imaging formula is：
The size of then s1 '=3*f1/2, real image and the first image that the first convex lens 36 is formed are s1 '：S1=2:
1, that is, the real image of diminution is formed, which is the 1/2 of the first image.The real image is the real image that the first image down stands upside down.
At this point it is possible to which the optical center distance for setting predeterminable area and the first convex lens 36 is s1 '.It should be noted that s1 ' and s1 sizes can be with
It sets according to demand, is not limited to the above embodiment.Wherein, the mode irradiated upward vertically for display device 30, it is photosensitive
The bottom of slot 33 is that can pass through for the corresponding light of the first image A shown by display device 30.
On the optical axis direction of the first convex lens 36, physical spatial location of first convex lens 36 relative to display device 30
It is adjustable.The object distance and image distance of the first convex lens 36 can be adjusted by adjusting the physical spatial location, to adjust its formation
Amplification or minification of the real image relative to the first image.As shown in figure 3, forming first in fact for the ease of adjusting Optical devices
The amplification factor or minification of picture, 3D printing system further include adjustable support 37.First convex lens 36 and/or display dress
30 are set to be fixed on adjustable support 37.When the first convex lens 36 is fixed on adjustable support 37, it is convex that first can be adjusted
Lens 36 move in the direction of its optical axis, to adjust its object distance and image distance, when display device 30 is fixed on adjustable support 37
When, display device 30 can be adjusted and moved in the direction of the optical axis, to adjust the object distance of adjacent first lens 36.
In the embodiment shown in fig. 3, optical imaging device 35 only includes the first convex lens 36, that is to say, that passes through first
It is the first real image B that convex lens 36, which forms real image, and the first image A passes through the first convex lens 36, in the preset areas of photo-curing material C
At the first real image B in domain.Position by adjusting display device 30 and/or the first convex lens 36 can both adjust the first convex lens
36 object distance and image distance, and then adjust amplification or the minification of the first real image B.
With reference to figure 4, Fig. 4 is the structural schematic diagram of another 3D printing system provided in an embodiment of the present invention, the embodiment party
On the basis of the above embodiment, setting optical imaging device 35 further includes second convex lens 38, the second convex lens to formula
38 is identical as the optical axis of the first convex lens 36, and the second convex lens 38 is between the first convex lens 36 and photo-curing material C；
First real image B is formed via the second convex lens in the predeterminable area of photo-curing material C, that is to say, that optical imaging device is most
Eventually by second convex lens shape at the first real image B, the second convex lens 38 has a focal length f2, the image distance s2 ' of the first real image (the
The image distance of two convex lenses 38) it is 2*f2.
Second convex lens 38 can be fixed with position, can also be fixed on adjustable support 37, and adjustable support 37 is passed through
Its position is adjusted in the direction of the optical axis.
It should be noted that illustrating only optical imaging device tool in Fig. 4, there are one the second convex lens 38, other embodiment party
In formula, there can be multiple second convex lenses 38 to be successively set between the first convex lens 36 and photo-curing material C, Mei Ge
Two convex lenses 38 are used to the big real image such as form based on incident ray.
When tool is there are one when the second convex lens 38, on the optical axis direction of the second convex lens 38, the first convex lens 36 and the
The distance between two convex lenses 38 L is：
Wherein, N indicates scaling multiple of the real image of the first convex lens 36 formation relative to the first image, has：
s1’:S1=1:N (3)
It can be calculated based on formula (1) and formula (3)：
Based on formula (2) and formula (4) it is found that the object distance s2=2*f2 of the second convex lens 38.As s2 '=2*f2, s2
=s2 ' ＞ f2, can calculate the second lens forming using the imaging formula of the second convex lens is the equal real image to stand upside down greatly.This
When, if s1=3f1, s1 '=3*f1/2, N=2, then the real image B ' that the first convex lens 36 is formed is the 1/ of the first image A sizes
The real image that the handstand that 2, real image B ' are the first image A is reduced, real image B ' of second convex lens 38 based on the first convex lens 36 are carried out
Imaging forms the first big real image B such as handstand of real image B ', that is to say, that finally formed first real image B is the first image A
The 1/2 of size, the first real image B are that the first image A reduces upright real image.
By foregoing description it is found that the first convex lens of setting is used to form the N times of real image scaled, the second convex lens is used for shape
At etc. big real image, then when printing precision can be made to become not being arranged optical imaging device by the optical imaging device
N times.
For Fig. 4 illustrated embodiments, the second convex lens 38 is positioned over apart from the position that real image B ' is 2*f2, according at
It is 2* in the second convex lens of distance 38 as formula and convex lens imaging principle it is found that real image B ' is after the second convex lens 38
The position of f2 forms the first big real image B such as handstand.
In optical imaging device 35 shown in Fig. 4, the first convex lens 36 be used for liquid crystal display panel 32 is shown first
Image A carries out corresponding multiple diminution or amplification, forms real image B ', and what it is due to the formation of the first convex lens 36 is real image, and convex lens
The real image that mirror is formed all is to stand upside down, then by the second convex lens 38 to real image B ' re-imagings, the handstand for forming real image B ' is real
Picture, i.e. the first real image B, since its amplification factor is 1, therefore the real image B ' that the second convex lens 38 is used to shorten on the first convex lens 36
It stands upside down, does not change its size, finally formed first real image B is upright real image, and is the 1/2 of the first image A.
It should be noted that the number of convex lens can be set according to demand in optical imaging device 35, it is not limited to Fig. 3
With mode shown in Fig. 4.Formed the first real image A relative to the first image B can be arrangement or it is upright.
When carrying out 3D printing by the embodiment of the present application 3D printing system, if setting optical imaging device is formed relatively
In the first real image of the diminution of the first image, the liquid crystal display panel that display precision is 100 μm can be utilized to realize printing precision
For 50 μm of high-precision printing, to meet the needs of current 3D printing technique is for high-precision printing.
By foregoing description it is found that in 3D printing system of the embodiment of the present invention, on the basis for not changing current display device
On, increase by an optical imaging device between display device and photosensitive material, which can be based on display device
Display the first image formed irradiation photosensitive material the first real image, with adjustment irradiation photosensitive material the first real image size and
Resolution ratio, without display device is needed to change, regulative mode is simple, low manufacture cost.And lens and/or aobvious in optical imaging device
Position of the showing device on light direction of illumination can be adjusted, to adjust the object distance and image distance of convex lens, to adjust photograph
Scaling multiple of first image relative to the first image of photosensitive material is penetrated, regulative mode is simple and fast, may be implemented to printing
The quick regulation and control of precision.
In the embodiment of the present application 3D printing system, by an optical imaging device integrally to shown by display device first
Image zooms in and out adjusting, and the display without single pixel in independent face display device is regulated and controled, and principle is simple, cost
It is low.
In order to ensure that liquid crystal display panel has the near ultraviolet short-wave band of 385nm-420nm maximum in display device
Transmitance, the thickness that liquid crystal layer in liquid crystal display panel can be arranged is 2.5 μm -3.0 μm, including endpoint value.And in order to avoid
Strong absorption of traditional organic iodine system polaroid near ultraviolet short-wave band, can be arranged liquid crystal display panel in liquid crystal display
In polaroid be wire grating polaroid, to improve transmitance.In order to avoid in liquid crystal display panel color blocking layer for close purple
The strong absorption of outer short-wave band, it includes color blocking layer that liquid crystal display panel, which can be arranged, not, and color blocking layer is aobvious for otherwise visible light color
Show, when liquid crystal display panel is used for the 3D printing process of near ultraviolet short-wave band, color blocking layer can be removed.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of 3D printing system, which is characterized in that including：
Display device, the display device is for showing the first image；
Optical imaging device, the optical imaging device is located at the light emission side of the display device, and includes at least the first convex lens
There is focal length f1, the display device to have object distance s1, and s1 ＞ relative to first convex lens for mirror, first convex lens
f1；
Photo-curing material, described first image passes through the optical imaging device, in the preset areas of the photo-curing material
At the first real image in domain.
2. 3D printing system according to claim 1, which is characterized in that the size of first real image is relative to described
One N times of image down, wherein N ＞ 1.
3. 3D printing system according to claim 2, which is characterized in that first convex lens and the display device phase
Neighbour's setting, wherein s1 ＞ 2*f1.
4. 3D printing system according to claim 2, which is characterized in that described first image passes through first convex lens
Mirror, at first real image in the predeterminable area of the photo-curing material.
5. 3D printing system according to claim 3, which is characterized in that the optical imaging device further includes one second
Convex lens, second convex lens is identical as the optical axis of the first convex lens, and second convex lens is located at described first
Between convex lens and the photo-curing material；
First real image is formed via second convex lens in the predeterminable area of the photo-curing material；
Second convex lens has focal length f2, and the image distance of first real image is 2*f2.
6. 3D printing system according to claim 5, which is characterized in that on the optical axis direction of second convex lens,
The distance between first convex lens and second convex lens are
7. 3D printing system according to claim 1, which is characterized in that on the optical axis direction of first convex lens,
First convex lens is adjustable relative to the physical spatial location of the display device.
8. 3D printing system according to claim 1, which is characterized in that the photo-curing material is located in photosensitive slot；
The 3D printing system further includes bogey, and the bogey is used to carry the photo-curing material after solidification
Material.
9. 3D printing system according to claim 1, which is characterized in that the display device includes：
Liquid crystal display panel and backlight module, the backlight module are located at the incident side of the liquid crystal display panel；Wherein,
The backlight module includes backlight, and the wavelength of the backlight is 385nm-420nm, including endpoint value.
10. 3D printing system according to claim 9, the backlight module further include be located at the liquid crystal display panel and
Fresnel diaphragm between the backlight and/or diffusion sheet.
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Application publication date: 20180907 |