CN105881901A - Light source used for improving photocuring contrast ratio, resin pool and 3D printer - Google Patents
Light source used for improving photocuring contrast ratio, resin pool and 3D printer Download PDFInfo
- Publication number
- CN105881901A CN105881901A CN201610235883.3A CN201610235883A CN105881901A CN 105881901 A CN105881901 A CN 105881901A CN 201610235883 A CN201610235883 A CN 201610235883A CN 105881901 A CN105881901 A CN 105881901A
- Authority
- CN
- China
- Prior art keywords
- light source
- chamber
- photocuring
- resin pool
- light
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
Abstract
The invention provides a light source used for improving the photocuring contrast ratio. The light source comprises a substrate, a reflection bowl arranged on one side of the substrate and a light-emitting element arranged on the substrate and located at the focal point of the reflection bowl; in addition, the invention provides a resin pool adopting the light source; the resin pool comprises a transparent bottom wall, a peripheral wall arranged on the bottom wall and the light source arranged on the outer portion of the bottom wall; and the invention further provides a photocuring 3D printer adopting the light source or the resin pool. The light source, the resin pool and the photocuring 3D printer are short and concise in optical path, a large amount of internal space of the 3D printer cannot be occupied, and miniaturization and family orientation of the 3D printer are facilitated. In addition, the illumination intensity, light uniformity, the parallelism depth and the photocuring contrast ratio of the light source, the resin pool and the photocuring 3D printer are obviously improved, and energy sources can be more effectively used.
Description
Technical field
The present invention relates to 3D printer field, particularly to the light source for promoting photocuring contrast,
Use the resin pool of this light source, and include the 3D printer of described resin pool.
Background technology
In 3D printing technique, relatively conventional is Introduction To Stereolithography, and it utilizes liquid
There is polyreaction under light illumination in the photosensitive resin (UV) of state, with light source according to the cross section of entity to be solidified
Shape is irradiated, and makes accumulation superposition after liquid photosensitive resin successively curing molding, ultimately forms solidification real
Body.
At present, some photocuring printers use LCD liquid crystal display to show the transversal of article to be printed
Face pattern, then utilizes light source to irradiate LCD liquid crystal display, after light passes through LCD display unit,
The liquid photosensitive resin in resin pool is made to be solidified into corresponding shape.
As it is shown in figure 1, the International Patent Application PCT/CN2015/081785 (Shen proposed the applicant
Please day: on June 18th, 2015) in recorded a kind of LCD type 3D printer, it includes having
The LED light source 1 ' of mirror, transparent resin pond 2 ', cover the Fresnel Lenses 3 ' in resin pool diapire, set
It is placed in resin pool and is positioned at the LCD liquid crystal display 4 ' of Fresnel Lenses 3 ' top, be positioned at resin
The load bearing unit 5 ' for carrying fixed line shaped-article above pond.
LED light source is after lens, and the depth of parallelism of light has obtained certain lifting, but Divergent Phenomenon is still
So exist.The light intensity of the core being irradiated to LCD liquid crystal display 4 ' is relatively big, edge part light splitting
Strong less, the light intensity of core to marginal portion is linearly distributed, and is therefore irradiated to whole LCD
The light uniformity on liquid crystal display 4 ' is relatively low.Through experiment test, LCD liquid crystal display 4 '
Mid portion light strength ratio marginal portion light intensity is twice above.
Need during photosensitive resin solidification to irradiate certain time with the light of certain light intensity, describe for convenience,
If required light intensity is 2000lux when certain photosensitive resin solidifies one layer in 3D print procedure, hardening time
For 10s.Relatively low owing to exposing to the light uniformity of LCD liquid crystal display 4 ', it can be assumed that
The light intensity of the core of LCD liquid crystal display 4 ' is the light intensity of 2000lux, marginal portion
For 1000lux, then the liquid resin above LCD liquid crystal display 4 ' centre is by illumination
Penetrate curing molding after 10s, and the resin of marginal portion be likely to be at not fully cured state, even
Liquid.When 10s, because the different parts solid state of whole solidification object is different, and cause each portion
The density of position is inconsistent, the most just reduces Stereolithography precision.
Moreover, from fig. 1, it can be seen that for the effective illuminating area obtaining certain area, LED light source
It must is fulfilled for separated by a distance between 1 ' and LCD liquid crystal display 4 '.If LED light source 1 '
Upper shifting one segment distance, its light sent is radiated at the effective illuminating area on LCD liquid crystal display 4 '
To reduce, thus cause the cross sectional dimensions of curable object to reduce, light source 1 ' is to LCD liquid crystal display
The distance of unit 4 ' is more than 150mm.Therefore, current LCD type 3D printer light path system is lengthy and tedious,
Light in order to keep light source to launch can have the maximum uniformity and effective illuminating area, it has to takies
The space of 3D printer in the vertical direction, to cause the fuselage size of 3D printer to increase, is manufactured into
This increase.
Summary of the invention
In view of problems of the prior art, the present invention provides a kind of for promoting photocuring contrast
Light source, including substrate, is arranged at the reflector of described substrate side, is arranged on described substrate and is positioned at
The light-emitting component of the focal point of described reflector.
In certain embodiments of the present invention, described reflector has multiple and is arranged at institute in array
Stating substrate, described light-emitting component has focal point that is multiple and that be arranged at each reflector described.
In certain embodiments of the present invention, the described light source being used for promoting photocuring contrast includes
It is arranged at fin or the heat emission fan of described substrate opposite side.
So that light source can work under optimum temperature, in certain embodiments of the present invention, institute
The opposite side stating substrate is provided with for liquid or the first chamber of gas flowing, and described first chamber has stream
Hand-hole and tap hole, the heat given out with realization liquid or GAS ABSORPTION light source.Due to liquid
Specific heat capacity is generally higher than gas, therefore uses liquid even more ideal, and this liquid can be cooling water.
Present invention also offers a kind of resin pool for promoting photocuring contrast, including transparent diapire,
Be arranged at the perisporium on described diapire, be arranged at outside described diapire as above any for
The light source of photocuring 3D printer.
In certain embodiments of the present invention, the described resin pool bag for promoting photocuring contrast
Include and be arranged at described diapire and be positioned at the LCD liquid crystal display of described resin pool, described light-emitting component
Distance r to described LCD liquid crystal display is less than 30mm.
The light source using reflector and light-emitting component (can use LED) to form can be directly disposed at
On the diapire of resin pool, therefore it can even may be used with LCD liquid crystal display at a distance of less than 30mm
With the needs of more intensity of illumination, light source is tightly against resin pool diapire and arranges.
In certain embodiments of the present invention, shape between described LCD liquid crystal display and described diapire
Become the second chamber, described diapire offers the ostium and tap hole communicated with described second chamber.
In certain embodiments of the present invention, described second chamber is used for accommodating coolant, described transparent
The refractive index of diapire identical or close with the refractive index of described coolant.
In certain embodiments of the present invention, the ostium of described first chamber and outside feed liquor/air pipe
Connection, the tap hole of described second chamber and outside go out liquid/gas pipeline connection, the outflow of described first chamber
The ostium of hole and described second chamber passes through pipeline connection；Or
The tap hole of described first chamber and outside go out liquid/gas pipeline connection, the ostium of described second chamber
Connecting with outside feed liquor/air pipe, the ostium of described first chamber and the tap hole of described second chamber lead to
Cross pipeline connection.
Additionally, the invention provides a kind of photocuring 3D printer, including any one as above
Light source or any resin pool using this light source as above.
Having the beneficial effects that of light source, resin pool and the photocuring 3D printer that the present invention provides:
1, reflector and the fit system of light-emitting component are used, to omit lens and Fresnel Lenses so that
Light path shortens, and light path system is succinct, and therefore this light source can directly be arranged on the diapire of resin pool,
The inner space of 3D printer will not be taken the most in a large number.
2, after light-emitting component is launched light is uniform via reflector, parallel, parallel rays proportion
Increasing, the depth of parallelism between light is also substantially improved.
When 3, using this kind of light source, resin pool, the intensity of illumination on LCD liquid crystal display significantly increases
Add, more than 25 times can be improved compared to prior art.
4, photocuring contrast is obviously improved, i.e. the overwhelming majority of the light that light source is launched can be irradiated in
On the image that LCD display unit is presented, the light being irradiated in outside image significantly reduces.Prior art
Photocuring contrast is 50:1～100:1, and the present invention is 500:1.Therefore, this light source, resin pool and
When the 3D printer using it solidifies identical object, the electric energy of consumption is lower, beneficially desktop, family
Front yard, meets national energy-saving consumption reduction policy.
Accompanying drawing explanation
Fig. 1 is existing photocuring 3D printer arrangement schematic diagram；
Fig. 2 is the structural representation (single led lamp) of the light source of an embodiment of the present invention；
Fig. 3 is the structural representation (array-type LED lamp) of the light source of an embodiment of the present invention；
Fig. 4 is the sectional view of the light source with the first chamber of an embodiment of the present invention；
Fig. 5 is that the top view of the light source with the first chamber of an embodiment of the present invention (removes luminous unit
Part)；
Fig. 6 is the structural representation of the resin pool of an embodiment of the present invention；
Fig. 7 is the sectional view of the resin pool of another embodiment of the present invention；
Fig. 8 is the axonometric chart of resin pool described in Fig. 7.
Detailed description of the invention
In order to make the purpose of invention, technical scheme and advantage clearer, real with concrete below in conjunction with the accompanying drawings
Execute example invention is described in further detail.Although accompanying drawing shows disclosure exemplary embodiment,
It should be appreciated, however, that may be realized in various forms the present invention and should not limited by embodiments set forth here
System.On the contrary, it is provided that these embodiments are able to the more thorough explanation present invention, and can be by this
Invention scope complete convey to those skilled in the art.
With reference to Fig. 2, an embodiment of the present invention provides a kind of light source for promoting photocuring contrast,
It includes substrate 1, reflector 2 and light-emitting component 3.Reflector 2 be arranged at substrate 1 side (on
Side), and reflector 2 has the perisporium of cross section parabolically shape and is positioned at the hole of middle part focal point.Luminous
Element 3 uses LED, and it is arranged on substrate 1 and is positioned in the middle part of reflector 2 in the hole of focal point.
Therefore, the divergent rays that the LED 3 after arranging sends, after the reflection of reflector 2, become
Become many parallel ray beams.
With reference to Fig. 3, in order to strengthen the intensity of illumination of light source and ensure that the light that light source is launched is parallel rays,
Multiple reflector 2 can be set to array on substrate 1.As a example by Fig. 3, multiple reflectors 2 gusts
The continuous distribution in the way of 8 row 11 arrange (8 × 11) of column.Multiple LED 3 are arranged at each
Reflector 2 focal point.During work, multiple LED 3 produce big calorimetric, in order to solve this problem,
The present embodiment is provided with polylith heat sink 4 at the opposite side (downside) of substrate 1.Certainly, this area skill
Art personnel are it should be understood that can also use heat emission fan to replace heat sink.
With reference to Fig. 4～5, in one embodiment of the invention, it is provided with in substrate 1 for liquid or gas
First chamber 5 of body flowing.This first chamber 5 has ostium 51 and tap hole 52.Therefore, to
In one chamber 5 when of conveying liquid or gas, this liquid or gas just can absorb multiple LED
3 heats produced, to reach the purpose of heat radiation.The effect of conveying liquid is better than conveying gas, conveying
Liquid can be cold water.
As shown in Figure 6, the invention provides a kind of use above-mentioned light source for photocuring 3D printer
Resin pool, including transparent diapire 6, the perisporium 7 being arranged on diapire 6 and light source.Described light
Source can use multiple LED 3 light source of above-mentioned single led lamp 3 or array, and this light source is permissible
There is heat sink 4 or heat emission fan or the first cavity volume 5, to realize the purpose of heat radiation.It should be understood that
When using single led lamp 3 as light source, owing to the heat produced is less, it is also possible to do not consider heat radiation
Problem, only by air natural flow to realize dispelling the heat.
With continued reference to Fig. 6, in another embodiment, LCD liquid crystal display 8 can be set
Put on the diapire 6 of resin pool.Owing to the diapire 6 of resin pool is transparent, so the light that light source is launched
Line can direct irradiation LCD liquid crystal display 8.
The light intensity spatial distribution that single led lamp 3 sends is represented by:Wherein,
I0For the light-emitting area of the LED light intensity on normal,Why normal direction becomes arbitrarily angledDirection
Light intensity.
If ignoring the size of LED self, then obtaining LED light source with LCD display unit distance is
During r, its light launched light distribution on LCD liquid crystal display 8:
Therefore, the intensity of illumination that the light that light-emitting area (LED) sends produces on LCD display unit with
The angle of emergenceIncrease and decay rapidly.
The light path system of existing photocuring 3D printer is bigger to the distance of LCD liquid crystal display 8
(i.e. r value is bigger), then need to increase the luminous power of light source, guarantee LCD liquid crystal display 8
On light intensity value meet photosensitive resin solidifying requirements.And the photocuring 3D that present embodiment provides prints
The light source that the resin pool bottom of machine is arranged has substrate 1, reflector 2 and light-emitting component 3, light-emitting component
The distance of 3 distance LCD liquid crystal displays 8 is less than 30mm, it might even be possible to be tightly attached at the bottom of resin pool
On wall 6.Now, reflector 2 promotes the uniformity of light, and light radiation is at LCD liquid crystal display list
The intensity at unit 8 centers and edge is substantially suitable, does not haves the angle of emergence along with lightIncrease and
The phenomenon of decay rapidly.It addition, this kind of light source is no longer necessary to arrange lens, use the resin of this light source
Also it is no longer necessary to cover Fresnel Lenses on the diapire 6 in pond.
Fig. 7 show schematically show the resin pool that another embodiment of the present invention is provided, wherein,
Form the second chamber 9 between LCD liquid crystal display 8 and diapire 6, described diapire 6 offers with
Ostium that described second chamber 9 communicates and tap hole.Likewise it is possible to carry in the second chamber 9
The when of liquid or gas, this liquid or gas can absorb the heat that LCD liquid crystal display 8 produces
Amount, to reach the purpose of heat radiation.The effect of conveying liquid is better than conveying gas, and the liquid of conveying is permissible
For cold water.
The runner cooling substrate 10 mated for a kind of and LCD liquid crystal display 8 shown in Fig. 8.First
Runner cools down substrate 10 be arranged in resin pool, then LCD liquid crystal display 8 is arranged on it
Top.The whole surface of runner cooling substrate 10 is formed with the runner 11 flowed for liquid of complications.Cause
This, the runner 11 between runner cooling substrate 10 and LCD display unit 8 is effectively equivalent to
Second chamber 9.
Runner cooling substrate 10 and LCD liquid crystal display 8 is fixed together by gluing connecing.Due to
Use existing LCD liquid crystal display 8 on market the most cheap at present, therefore use glue to be adhesively fixed.
If those skilled in the art are it should be understood that LCD liquid crystal display 8 is to cool down base according to runner
The size customization of plate 10, then can use and gluing connect and be mechanically fixed dual fixing measure.
In the embodiment of a kind of deformation, the diapire 6 of resin pool can directly arrange as shown in Figure 8
Runner 11, then install in LCD liquid crystal display 8 to resin pool.
In the embodiment shown in Fig. 8, the refractive index of the cooling liquid of employing and runner cooling substrate 10
Refractive index consistent or close.The purpose so arranged is to make it farthest improve Stereolithography
Precision, to avoid owing to refractive index is inconsistent and present runner 11 on the surface of Stereolithography object
Vestige.
In order to simplify the structure of light source and resin pool further, one the most preferred embodiment in,
The ostium of the first chamber 5 connects with outside feed liquor/air pipe, and tap hole and the outside of the second chamber 9 go out
Liquid/gas pipeline connection, and the tap hole of the first chamber 5 and the ostium of the second chamber 9 are passed through pipeline
Connection.Or, the tap hole of the first chamber 5 and outside go out liquid/gas pipeline connection, the stream of the second chamber 9
Hand-hole connects with outside feed liquor/air pipe, the ostium of the first chamber 5 and the outflow of described second chamber 9
Pipeline connection is passed through in hole.
As it appears from the above, can be completed LED 3 and liquid crystal LCD display unit 8 by a pipeline
Dispel the heat, so that light source and include that the space shared by resin pool of this light source is compressed, then adopt
With the photocuring 3D printer of this resin pool, huge inner space just need not be set for accommodating light path system
System, the manufacturing cost of photocuring 3D printer significantly reduces, and is more suitable for desktop, domestic.
Those skilled in the art it should be understood that light-source structure as described above and resin pool structure,
Photocuring 3D printer can be manufactured, its can include having be vertically arranged guide rail frame, be arranged at
The light source of any one simple in construction foregoing in described framework or use the resin pool of this light source, energy
Enough move along described guide rail and be positioned at the load bearing unit above described resin pool.The photocuring that the present invention provides
The light source of 3D printer prints to the distance of LCD liquid crystal display 8 compared to existing photocuring 3D
Machine reduces more than 5 times, and light source exposes to the light intensity of LCD liquid crystal display 8 and improves 25 times
Above, meanwhile, its volume significantly reduces.
When photocuring contrast is the cross section showing object to be printed with LCD liquid crystal display 8, light
What source sent exposes to the Optical power values of the light in its pattern shown and the light exposing to outside pattern
The ratio of Optical power values.Photocuring contrast is the highest, then show that the utilization rate of light source is the highest.In employing
The light ray parallel degree of the photocuring 3D printer stating light source or resin pool is high, its photocuring contrast value energy
Enough reach 500:1, the photocuring contrast value of the most existing LCD type photocuring 3D printer
50:1～100:1.
Above various embodiments of the present invention are described in detail.It will be understood by those skilled in the art that
Can be in the case of without departing from the scope of the invention (being limited by the accompanying claims), to embodiment
Carry out various amendment, change and change.The explanation of right should be explained from entirety and met with
Consistent widest range is described, however it is not limited to the enforcement example in example or detailed description.
Claims (10)
1. for promoting the light source of photocuring contrast, it is characterised in that including:
Substrate；
It is arranged at the reflector of described substrate side；
It is arranged on described substrate and is positioned at the light-emitting component of focal point of described reflector.
Light source for promoting photocuring contrast the most according to claim 1, it is characterised in that:
Described reflector has multiple and is arranged at described substrate in array；
Described light-emitting component has focal point that is multiple and that be arranged at each reflector described.
Light source for promoting photocuring contrast the most according to claim 1, it is characterised in that
Including:
It is arranged at fin or the heat emission fan of described substrate opposite side.
Light source for promoting photocuring contrast the most according to claim 1, it is characterised in that:
The opposite side of described substrate is provided with for liquid or the first chamber of gas flowing, described first chamber
There is ostium and tap hole.
5. for promoting the resin pool of photocuring contrast, it is characterised in that including:
Transparent diapire；
It is arranged at the perisporium on described diapire；
Be arranged at outside described diapire as according to any one of Claims 1 to 5 for photocuring 3D
The light source of printer.
Resin pool for promoting photocuring contrast the most according to claim 5, it is characterised in that
Including:
It is arranged at described diapire and is positioned at the LCD liquid crystal display of described resin pool；
Described light-emitting component is less than 30mm to distance r of described LCD liquid crystal display.
Resin pool for promoting photocuring contrast the most according to claim 6, it is characterised in that:
Form the second chamber between described LCD liquid crystal display and described diapire, described diapire is offered
There is the ostium and tap hole communicated with described second chamber.
Resin pool for promoting photocuring contrast the most according to claim 6, it is characterised in that:
Described second chamber is used for accommodating coolant；
The refractive index of described transparent diapire is identical or close with the refractive index of described coolant.
Resin pool for promoting photocuring contrast the most according to claim 7, it is characterised in that:
The ostium of described first chamber connects with outside feed liquor/air pipe；
Tap hole and the outside of described second chamber go out liquid/gas pipeline connection；
The tap hole of described first chamber and the ostium of described second chamber pass through pipeline connection；Or
Tap hole and the outside of described first chamber go out liquid/gas pipeline connection；
The ostium of described second chamber connects with outside feed liquor/air pipe；
The ostium of described first chamber and the tap hole of described second chamber pass through pipeline connection.
10. photocuring 3D printer, it is characterised in that including:
Light source as according to any one of Claims 1 to 4；Or
Resin pool as according to any one of claim 5～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235883.3A CN105881901A (en) | 2016-04-15 | 2016-04-15 | Light source used for improving photocuring contrast ratio, resin pool and 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235883.3A CN105881901A (en) | 2016-04-15 | 2016-04-15 | Light source used for improving photocuring contrast ratio, resin pool and 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105881901A true CN105881901A (en) | 2016-08-24 |
Family
ID=56704819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610235883.3A Pending CN105881901A (en) | 2016-04-15 | 2016-04-15 | Light source used for improving photocuring contrast ratio, resin pool and 3D printer |
Country Status (1)
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| CN (1) | CN105881901A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915078A (en) * | 2017-03-14 | 2017-07-04 | 北京金达雷科技有限公司 | Optical path component, resin pool and 3D printer for photocuring 3D printer |
| CN106985392A (en) * | 2017-03-14 | 2017-07-28 | 北京金达雷科技有限公司 | Photocuring 3D printer and its resin pool component |
| CN107263864A (en) * | 2017-07-26 | 2017-10-20 | 江苏时间环三维科技有限公司 | A kind of light source module based on LCD photocuring 3D printers |
| CN107748465A (en) * | 2017-11-15 | 2018-03-02 | 吴华强 | A kind of 3D printer and LCD backlight source device based on liquid crystal imaging principle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106915078A (en) * | 2017-03-14 | 2017-07-04 | 北京金达雷科技有限公司 | Optical path component, resin pool and 3D printer for photocuring 3D printer |
| CN106985392A (en) * | 2017-03-14 | 2017-07-28 | 北京金达雷科技有限公司 | Photocuring 3D printer and its resin pool component |
| CN107263864A (en) * | 2017-07-26 | 2017-10-20 | 江苏时间环三维科技有限公司 | A kind of light source module based on LCD photocuring 3D printers |
| CN107748465A (en) * | 2017-11-15 | 2018-03-02 | 吴华强 | A kind of 3D printer and LCD backlight source device based on liquid crystal imaging principle |
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