CN108803243A - A kind of digital projection 3D molding machines - Google Patents
A kind of digital projection 3D molding machines Download PDFInfo
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- CN108803243A CN108803243A CN201710287656.XA CN201710287656A CN108803243A CN 108803243 A CN108803243 A CN 108803243A CN 201710287656 A CN201710287656 A CN 201710287656A CN 108803243 A CN108803243 A CN 108803243A
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- projection
- optical flat
- molding machines
- lens barrel
- light
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- 238000000465 moulding Methods 0.000 title claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 77
- 230000000694 effects Effects 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000004922 lacquer Substances 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000000741 silica gel Substances 0.000 claims 1
- 229910002027 silica gel Inorganic materials 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010146 3D printing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70258—Projection system adjustments, e.g. adjustments during exposure or alignment during assembly of projection system
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70216—Mask projection systems
- G03F7/70358—Scanning exposure, i.e. relative movement of patterned beam and workpiece during imaging
- G03F7/70366—Rotary scanning
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The present invention relates to a kind of digital projection 3D molding machines, including：Projection arrangement, rotating device and go out optical assembly；Wherein, rotating device can drive out optical assembly to rotate；It includes lens barrel and optical flat to go out optical assembly, and the light-emitting surface of lens barrel is inclined-plane, and optical flat is fixed on the inclined-plane of lens barrel；The light that projection arrangement is sent out is emitted through lens barrel or after rotating device and lens barrel from optical flat.Refraction principle of the digital projection 3D molding machines proposed by the present invention based on light in optical flat, offset using inclined optical flat to image, along with high-speed rotating LED projection optical structure design, it generates on image space to the smooth effect of time for exposure integral, processing is homogenized for the molding surfaces quick 3D.
Description
Technical field
The invention belongs to 3D printing technique fields, and in particular to a kind of digital projection 3D molding machines.
Background technology
Digital light processing (Digital Light Processing, DLP) technology be grew up in recent years it is novel
Photocuring technology is mainly used for making small size part by face exposure projections mode.With other photocureable rapid shaping modes
It compares, the mode that face exposes direct projected image has many advantages, such as that Production Time is short, system cost is low, simple for process, becomes 3D
The important development direction in printing field.
For existing DLP technologies generally by the way of direct projected image, which has simple and convenient direct technology
Feature, but formed precision is limited to the spatial resolution of DMD (digital micro-mirror) or liquid crystal array, and it is inevitable
Meeting workpiece surface generate as caused by DMD or liquid crystal array intrinsic distribution zigzag striped and step.
In order to improve the formed precision and molded surface quality of 3D workpiece, it is thus proposed that using the multiple of the directions X-Y displacement
Forming method is exposed, its technical solution is as follows：LED projection ray machine since the spatial resolution of DMD or liquid crystal array is fixed, because
This pixel that can form constant number is formed by mask pattern, and mask pattern is discrete carry out space arrangement, by multiple
It illuminates and improves the resolution ratio of sub-pixel range outwardly and inwardly with path planning.But the above method can only be printing precision
Fining, striped and step refined, and homogenizing for workpiece surface is not fully achieved, for some Surface Qualities require compared with
High workpiece rapid shaping application also needs to carry out the processes such as surface polishing grinding after the completion of molding, not only time-consuming and laborious, also
It is easy the formed precision of loss workpiece itself.
Invention content
In order to solve the above-mentioned technical problem, the present invention proposes a kind of digital projection 3D molding machines.
A kind of digital projection 3D molding machines, including：Projection arrangement, rotating device and go out optical assembly；
Wherein, rotating device can drive out optical assembly to rotate；
It includes lens barrel and optical flat to go out optical assembly, and the light-emitting surface of lens barrel is inclined-plane, and optical flat is fixed at lens barrel
The inclined-plane on；
The light that projection arrangement is sent out is emitted through lens barrel or after rotating device and lens barrel from optical flat.
Further, angle of inclination of the optical flat relative to the plane vertical with lens barrel axis is equal to projection dress
Set the incidence angle when light sent out is incident on optical flat.
Further, the angle of inclination of optical flat is set according to the pixel size of projection device.
Further, the projection arrangement is LED projection ray machine, and the light that projection arrangement is sent out is ultraviolet light.
Further, digital projection 3D molding machines further include transparency silica glass, and transparency silica glass window is arranged in light
Learn a side of the tablet far from projection arrangement.
Further, digital projection 3D molding machines further include transparent silicon lacquer disk(-sc) and working face, and the setting of transparent silicon lacquer disk(-sc) exists
A side of the transparency silica glass window far from projection arrangement, working face are placed on transparent silicon lacquer disk(-sc)；The purple of LED projection ray machine output
Outer light passes sequentially through optical flat, transparency silica glass window and transparent silicon lacquer disk(-sc), is radiated on working face；Pass through rotating device
Rotation drives and controls lens barrel and optical flat rotation, to realize rotation exposure, Jin Ershi to each pixel of projector space
To the integral of angle on existing image space, smooth effect is generated.
Further, offset of the ultraviolet light that LED projection ray machine is sent out in optical flatWherein, n
It is the refractive index of optical flat, i1It is the incidence angle that ultraviolet light is incident on optical flat, unit is rad, the size of the incidence angle
Equal to the angle of inclination of optical flat, h is the thickness of optical flat.
Further, the luminous intensity of unit projection area is equal to micro- face on light-emitting area around certain point in given side
Upward luminous intensity divided by micro- face are in the projected area perpendicular to assigned direction, i.e.,：
Wherein, α is the angle of chief ray off center, and ω is the angular speed of optical flat rotation, and I is that the projection of LED projection ray machine is sent out
Luminous intensity, L are the luminous intensity in projected area, snFor perpendicular to the projected area of assigned direction；In an i.e. pixel always
Brightness isThe unit of wherein α=0,2 π, brightness are candela/rice 2.
Further, rotating device is electronically controlled rotary table, driven by the rotation of electronically controlled rotary table and control lens barrel and
The rotation of optical flat.
Further, projection arrangement is arranged in the lower section, top, left or right side of rotating device, correspondingly, projection arrangement
The light sent out is turned left projection from the bottom up, from top to bottom, from left to right or from the right side respectively.
Beneficial effects of the present invention：Digital projection 3D molding machines proposed by the present invention are based on light in optical flat
High-speed rotating LED projection optical structure design is added in refraction principle, the offset using inclined optical flat to image,
It generates on image space to the smooth effect of time for exposure integral, processing is homogenized for the molding surfaces quick 3D.
LED projection ray machine is fixed in digital projection 3D molding machines proposed by the present invention, and electronically controlled rotary table drives light
Tablet high speed rotation is learned, to realize that product is realized in the offset of ultraviolet light, the brightness of pixel in given directions in angle
Point, according to the relationship of angle and the angular speed and time for exposure of optical flat rotation, realized to picture by changing the time for exposure
The Fuzzy processing of element is presented as the processing that homogenizes to step line and hackle mark, raising formed precision in 3D printing molding.
Description of the drawings
Fig. 1 is the structural schematic diagram of digital projection 3D molding machines proposed by the present invention；
Fig. 2 is refraction effect schematic diagram shown in optical flat in digital projection 3D molding machines proposed by the present invention；
Fig. 3 a are the schematic diagrames of pixel intensity in digital projection 3D molding machines proposed by the present invention；
Fig. 3 b are the schematic diagrames that pixel intensity integrates in digital projection 3D molding machines proposed by the present invention；
Fig. 4 a are the design sketch that preceding pixel is integrated in digital projection 3D molding machines proposed by the present invention；
Fig. 4 b are that pixel homogenizes design sketch after integrating in digital projection 3D molding machines proposed by the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.But those skilled in the art know, the invention is not limited in attached drawings and following
Embodiment.
Digital projection 3D molding machines proposed by the present invention are as shown in Figure 1, include：LED projection ray machine 1, electronically controlled rotary table
2, lens barrel 3 and optical flat 4.
For convenience, below by taking the light of LED projection ray machine 1 projects from the bottom up as an example, illustrate digital projection 3D at
The position and structure relationship for all parts that type device includes, but those skilled in the art know, and the light of LED projection ray machine 1 is also
It can project, can also turn left projection from left to right or from the right side, the light path of projection can be horizontal direction or and water from top to bottom
Square at an angle, the light path of projection may be vertical direction or at an angle with vertical direction, specifically set
The mode of setting can according to when using application environment or application scenario determine.
Those skilled in the art could be aware that LED projection ray machine can also use other projection arrangements, and electronically controlled rotary table is also
Other rotating devices may be used.
LED projection ray machine 1 is fixed on the lower section of electronically controlled rotary table 2, is not contacted with electronically controlled rotary table 2.
Lens barrel 3 is embedded and is fixed in electronically controlled rotary table 2, and electronically controlled rotary table 2 can be with moving lens barrel 3 along perpendicular to light path
Direction rotates；The light out part of the light in part alignment LED projection ray machine 1 of lens barrel 3, the light of the light out part outgoing of LED projection ray machine 1 can
To be directly entered lens barrel 3, lens barrel 3 can also be entered back into through electronically controlled rotary table 2；The ultraviolet light that LED projection ray machine 1 exports is through lens barrel
3 light in part enters inside lens barrel 3；The light out part of lens barrel 3 is inclined-plane, and the angle of inclination of the inclined-plane with respect to the horizontal plane is equal to purple
Outer light is incident on incidence angle i when optical flat 41, as shown in Figure 2.The ultraviolet light is incident on incidence angle i when optical flat 41
It can be arranged and adjust according to the pixel size of LED projection ray machine 1.The inside dimension of lens barrel 3 is sized to allow LED projection
The ultraviolet light that ray machine 1 is sent out all passes through.Preferably, lens barrel is cylindrical shape.
4 fixed placement of optical flat can rotate together on the inclined-plane of lens barrel 3 with lens barrel 3,4 phase of optical flat
Angle of inclination for horizontal plane is also angle i1.Lens barrel 3 is driven and controlled by the rotation of electronically controlled rotary table 2 and optics is flat
The rotation of plate 4.
The digital projection 3D molding machines further include transparency silica glass 5, and the setting of transparency silica glass window 5 is flat in optics
Dust-proof effect is played in the top of plate 4 for optical flat 4 and LED projection ray machine 1.
The digital projection 3D molding machines further include transparent silicon lacquer disk(-sc) 6 and working face 7, and transparent silicon lacquer disk(-sc) 6 is arranged saturating
5 top of bright quartz window, working face 7 are placed on transparent silicon lacquer disk(-sc) 6.
The ultraviolet light that LED projection ray machine 1 exports passes sequentially through lens barrel 3 (or electronically controlled rotary table 2 and lens barrel 3), optical flat
4, transparency silica glass window 5, transparent silicon lacquer disk(-sc) 6, are radiated on working face 7；By the rotation of electronically controlled rotary table 2, drives and control
Lens barrel 3 and optical flat 4 rotation processed, to realize rotation exposure to each pixel of projector space, and then realizes image space
On to the integral of angle, generate smooth effect.
When the ultraviolet lighting that LED projection ray machine 1 is sent out is mapped to optical flat 4, since optical flat 4 has refractive index n, because
This light will produce refraction effect in optical flat 4, and optical flat 4 is in different orientation by deflection of light to certain inclination
Angle sets the angle of inclination of optical flat 4 according to the pixel size of the projection of LED projection ray machine 1, is incident on optical flat
The angle of incidence angle is identical as the angle of inclination of optical flat, and then realizes the rotation exposure of single pixel.
Refraction principle of the digital projection 3D molding machines proposed by the present invention based on light in optical flat, utilizes inclination
Offset of the optical flat to image, add high-speed rotating LED projection optical structure design, generate on image space to exposing
The smooth effect of light time integral homogenizes processing for the molding surfaces quick 3D.
As shown in Fig. 2, the ultraviolet light that sends out of LED projection ray machine 1 in optical flat 4 since refraction effect can occur centainly
Offset, offsetWherein, n is the refractive index of optical flat, i1It is the incidence that light is incident on optical flat
Angle (unit is rad), the size of the incidence angle are equal to the angle of inclination of optical flat, and h is the thickness of optical flat, if LED is thrown
The pixel size of shadow ray machine is d × d, and the offset of wherein d=2 Δs x, i.e. light are the half of pixel size.
Brightness is used to indicate the characteristics of luminescence of light-emitting area different location and different directions, it is shown that single in this direction
The luminous intensity of position projected area, is equal to micro- face luminous intensity in given directions on light-emitting area around certain point divided by should
Micro- face is in the projected area perpendicular to assigned direction, i.e.,：Wherein, α deviates for chief ray
The angle at center, ω are the angular speed that optical flat 4 rotates, and I is the projection luminous intensity of LED projection ray machine, and L is projected area
On luminous intensity, snFor perpendicular to the projected area of assigned direction；That is total brightness is in a pixelThe unit of wherein α=0,2 π, brightness are candela/rice 2, as shown in Figure 3a.
As shown in Figure 3b, the brightness after integrated is macroscopically presented as the Fuzzy processing to pixel, can be by changing
Become the time for exposure so as to improve printing effect, is presented as after 3D printing molding and place is homogenized to step line and zigzag striped
Reason homogenizes before handling as shown in fig. 4 a, homogenizes after handling as shown in Figure 4 b, a square represents a pixel in Fig. 4 a.
The working method of digital projection 3D molding machines proposed by the present invention is as follows：The ultraviolet light that LED projection ray machine is sent out
Lens barrel 3 (or electronically controlled rotary table 2 and lens barrel 3), optical flat 4, transparency silica glass 5 and transparent silicon lacquer disk(-sc) 6 are passed sequentially through, finally
It is irradiated on working face 7.In the course of work, LED projection ray machine 1 is fixed, and electronically controlled rotary table 2 drives 4 high speed of optical flat
Rotation, to realize the offset of ultraviolet light, the brightness of pixel in given directions realizes integral in angle, according to angle
The relationship of the angular speed and time for exposure that are rotated with optical flat 4 realizes the blurring to pixel by changing the time for exposure
Processing is presented as the processing that homogenizes to step line and hackle mark, raising formed precision in 3D printing molding.
More than, embodiments of the present invention are illustrated.But the present invention is not limited to the above embodiments.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of digital projection 3D molding machines, which is characterized in that including：Projection arrangement, rotating device and go out optical assembly；
Wherein, rotating device can drive out optical assembly to rotate；
It includes lens barrel and optical flat to go out optical assembly, and the light-emitting surface of lens barrel is inclined-plane, and optical flat is fixed at being somebody's turn to do for lens barrel
On inclined-plane；
The light that projection arrangement is sent out is emitted through lens barrel or after rotating device and lens barrel from optical flat.
2. digital projection 3D molding machines according to claim 1, which is characterized in that the optical flat relative to mirror
The angle of inclination of the cylinder vertical plane of axis, incidence angle when optical flat is incident on equal to the light that projection arrangement is sent out.
3. digital projection 3D molding machines according to claim 2, which is characterized in that the angle of inclination of optical flat
It is set according to the pixel size of projection device.
4. digital projection 3D molding machines according to claim 3, which is characterized in that the projection arrangement is LED projection
Ray machine, the light that projection arrangement is sent out are ultraviolet light.
5. digital projection 3D molding machines according to claim 4, which is characterized in that digital projection 3D molding machines also wrap
Transparency silica glass is included, the side far from projection arrangement in optical flat is arranged in transparency silica glass window.
6. digital projection 3D molding machines according to claim 5, which is characterized in that digital projection 3D molding machines also wrap
Transparent silicon lacquer disk(-sc) and working face are included, the side far from projection arrangement, working face in transparency silica glass window is arranged in transparent silicon lacquer disk(-sc)
It is placed on transparent silicon lacquer disk(-sc)；LED projection ray machine output ultraviolet light pass sequentially through optical flat, transparency silica glass window and thoroughly
Bright silica gel disk, is radiated on working face；By the rotation of rotating device, lens barrel and optical flat rotation are driven and control, to
Rotation exposure is realized to each pixel of projector space, and then realizes the integral on image space to angle, generates smooth effect.
7. the digital projection 3D molding machines according to any one of claim 4 to 6, which is characterized in that LED projection ray machine
Offset of the ultraviolet light sent out in optical flatWherein, n is the refractive index of optical flat, i1It is ultraviolet
Light is incident on the incidence angle of optical flat, and unit is rad, and the size of the incidence angle is equal to the angle of inclination of optical flat, h
It is the thickness of optical flat.
8. digital projection 3D molding machines according to claim 7, which is characterized in that unit projection area it is luminous strong
Degree is equal to micro- face luminous intensity in given directions on light-emitting area around certain point divided by micro- face perpendicular to given side
To projected area, i.e.,：Wherein, α is the angle of chief ray off center, and ω is optics
The angular speed of tablet rotation, I are the projection luminous intensity of LED projection ray machine, and L is the luminous intensity in projected area, snIt is vertical
Directly in the projected area of assigned direction；That is total brightness is in a pixelWherein α=0
The unit of~2 π, brightness are candela/rice2。
9. the digital projection 3D molding machines according to claim 1 to 6, any one of 8, which is characterized in that rotating device
For electronically controlled rotary table, the rotation of lens barrel and optical flat is driven and controls by the rotation of electronically controlled rotary table.
10. digital projection 3D molding machines according to claim 1, which is characterized in that projection arrangement is arranged in rotating dress
Lower section, top, the left or right side set, correspondingly, light that projection arrangement is sent out respectively from the bottom up, from top to bottom, from left past
It is right or turn left projection from the right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710287656.XA CN108803243A (en) | 2017-04-27 | 2017-04-27 | A kind of digital projection 3D molding machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710287656.XA CN108803243A (en) | 2017-04-27 | 2017-04-27 | A kind of digital projection 3D molding machines |
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| Publication Number | Publication Date |
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| CN108803243A true CN108803243A (en) | 2018-11-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710287656.XA Pending CN108803243A (en) | 2017-04-27 | 2017-04-27 | A kind of digital projection 3D molding machines |
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| CN (1) | CN108803243A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734045A (en) * | 2018-12-03 | 2019-05-10 | 浙江大学 | Ultrasonic wave added micro-structure constituency form fabrication device and method based on digital light |
| CN113885197A (en) * | 2021-12-08 | 2022-01-04 | 深圳市先地图像科技有限公司 | Optical device and laser direct imaging equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032343A (en) * | 1973-02-14 | 1977-06-28 | Agfa-Gevaert, A.G. | Method for production of rotationally symmetric non-spherical optical elements |
| WO1999018604A1 (en) * | 1997-10-07 | 1999-04-15 | Nikon Corporation | Projection exposure method and apparatus |
| WO2015007772A1 (en) * | 2013-07-16 | 2015-01-22 | Rapid Shape Gmbh | Method and device for producing a three-dimensional object and exposure mask generation device |
| CN104802400A (en) * | 2014-01-28 | 2015-07-29 | 上海普利生机电科技有限公司 | Light curing 3D printing equipment and image exposure system |
-
2017
- 2017-04-27 CN CN201710287656.XA patent/CN108803243A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032343A (en) * | 1973-02-14 | 1977-06-28 | Agfa-Gevaert, A.G. | Method for production of rotationally symmetric non-spherical optical elements |
| WO1999018604A1 (en) * | 1997-10-07 | 1999-04-15 | Nikon Corporation | Projection exposure method and apparatus |
| WO2015007772A1 (en) * | 2013-07-16 | 2015-01-22 | Rapid Shape Gmbh | Method and device for producing a three-dimensional object and exposure mask generation device |
| CN104802400A (en) * | 2014-01-28 | 2015-07-29 | 上海普利生机电科技有限公司 | Light curing 3D printing equipment and image exposure system |
Non-Patent Citations (1)
| Title |
|---|
| 郝允祥等: "《光度学》", 中国计量出版社, pages: 48 - 53 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734045A (en) * | 2018-12-03 | 2019-05-10 | 浙江大学 | Ultrasonic wave added micro-structure constituency form fabrication device and method based on digital light |
| CN109734045B (en) * | 2018-12-03 | 2020-09-11 | 浙江大学 | Ultrasonic-assisted microstructure selective forming manufacturing device and method based on digital light |
| CN113885197A (en) * | 2021-12-08 | 2022-01-04 | 深圳市先地图像科技有限公司 | Optical device and laser direct imaging equipment |
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Application publication date: 20181113 |