CN114083798A - Light source assembly and printer - Google Patents
Light source assembly and printer Download PDFInfo
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- CN114083798A CN114083798A CN202111268704.3A CN202111268704A CN114083798A CN 114083798 A CN114083798 A CN 114083798A CN 202111268704 A CN202111268704 A CN 202111268704A CN 114083798 A CN114083798 A CN 114083798A
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- 239000002390 adhesive tape Substances 0.000 description 1
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Classifications
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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
- B29C64/264—Arrangements for irradiation
- B29C64/277—Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
- B29C64/282—Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED] of the same type, e.g. using different energy levels
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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
Abstract
The application discloses a light source assembly and a printer, wherein the light source assembly comprises a light source, a first lens array and a second lens array, the first lens array and the second lens array are sequentially arranged above the light source, and the first lens array is positioned between the light source and the second lens array; the light emitted by the light source forms a first light beam which is emitted to the second lens array after passing through the first lens of the first lens array, the first light beam is divided by the target lenses on the second lens array to form a plurality of target light beams with uniform energy, and the uniform energy is used for indicating that the energy values of the target light beams are in a preset range. This may achieve the purpose of improving the uniformity of the light emitted by the light source assembly.
Description
Technical Field
The application belongs to the technical field of printing, concretely relates to light source subassembly and printer.
Background
In the printing process of the photo-curing printer, in order to ensure the printing precision of the printer, the light energy emitted to the screen of the printer needs to be kept as uniform as possible. However, since the angles of the light emitted from the light source are relatively dispersed, it is difficult to form uniform vertical light to be emitted to the screen, and thus the conventional light source scheme may affect the printing accuracy of the printer.
As can be seen, the light emitted from the light source in the related art has a problem of poor uniformity.
Disclosure of Invention
The application aims at providing a light source subassembly and printer, can solve the problem that there is the homogeneity difference in the light that the light source jetted out.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a light source assembly, which includes a light source, a first lens array and a second lens array, where the first lens array and the second lens array are sequentially disposed above the light source, and the first lens array is located between the light source and the second lens array;
the light emitted by the light source forms a first light beam which is emitted to the second lens array after passing through the first lens of the first lens array, the first light beam is divided by the target lenses on the second lens array to form a plurality of target light beams with uniform energy, and the uniform energy is used for indicating that the energy values of the target light beams are in a preset range.
In a second aspect, embodiments of the present application further provide a printer, including the light source assembly described in the first aspect.
In the embodiment of the application, the light emitted by the light source can form the first light beam emitted to the second lens array after being refracted by the first lens on the first lens array, and the plurality of target lenses on the second lens array can divide the first light beam and divide the first light beam into the plurality of target light beams with uniform energy, even though the light source assembly can emit the plurality of target light beams with uniform energy, the purpose of improving the uniformity of the light emitted by the light source assembly is achieved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an exploded schematic view of a light source assembly provided by embodiments of the present application;
FIG. 2 is a schematic view of an optical path of a light source module provided in an embodiment of the present application;
FIG. 3 is a second schematic view illustrating the optical path of a light source module according to an embodiment of the present disclosure;
FIG. 4 is a third schematic optical path diagram of a light source module according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a first lens array provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a second lens array provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a printer according to an embodiment of the present disclosure;
FIG. 8 is a second schematic structural diagram of a printer according to an embodiment of the present disclosure;
FIG. 9 is a schematic optical path diagram of a printer provided in an embodiment of the present application;
FIG. 10 is a schematic structural diagram of a printer provided in an embodiment of the present application;
FIG. 11 is a schematic structural diagram of a forming platform provided in an embodiment of the present application;
fig. 12 is a schematic structural diagram of a driving mechanism provided in an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application, and features in the following embodiments and embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 to 6, the present disclosure provides a light source module, where the light source module 10 includes a light source 11, a first lens array 12 and a second lens array 13, the first lens array 12 and the second lens array 13 are sequentially disposed above the light source 11, and the first lens array 12 is located between the light source 11 and the second lens array 13;
light emitted by the light source 11 passes through the first lens of the first lens array 12 to form a first light beam emitted to the second lens array 13, the first light beam is split by the plurality of target lenses on the second lens array 13 to form a plurality of target light beams with uniform energy, and the uniform energy is used for indicating that the energy values of the plurality of target light beams are within a preset range.
Here, the first lens array 12 and the second lens array 13 are sequentially disposed above the light source 11, which means that the first lens array 12 and the second lens array 13 are sequentially disposed in the light emitting direction of the light source 11. For example, the first lens array 12 and the second lens array 13 are disposed at intervals in the light emitting direction of the light source 11.
In this embodiment, light emitted from the light source 11 can be refracted by the first lens on the first lens array 12 to form a first light beam that is emitted to the second lens array 13, and the plurality of target lenses on the second lens array 13 can divide the first light beam to form a plurality of target light beams with uniform energy, even though the light source module 10 can emit a plurality of target light beams with uniform energy, thereby achieving the purpose of improving uniformity of light emitted from the light source module 10.
The energy uniformity is used to indicate that the energy values of the target light beams are within a preset range, that is, the target light beams formed by the first light beam after being processed by the target lenses on the second lens array 13 have the characteristic of uniform energy. Furthermore, an energy value within a predetermined range may be understood as an energy density of each beam within a predetermined range.
It should be noted that, part of the light beams formed after the division processing of the plurality of target lenses may be superimposed on the side of the second lens array 13 away from the first lens array 12, and form target light beams having uniform energy.
It is understood that the plurality of objective lenses in the second lens array 13 for forming the plurality of objective beams are lenses corresponding to the first lenses, i.e. the plurality of objective lenses can be specifically understood as lenses of the first beams within the coverage irradiation area on the second lens array 13. For example, the orthographic projection of one first lens on the second lens array 13 is covered with a plurality of objective lenses.
In some examples, the light source 11 may be an LED matrix light source, and the light emitted to the first lens may be light emitted by a target LED lamp in the LED matrix light source, that is, the light emitted by the target LED lamp may be processed by the first lens to form a first light beam emitted to the second lens array 13, and the first light beam emitted to the second lens array 13 may form a plurality of target light beams with uniform energy after passing through a plurality of target lenses, so as to achieve the purpose of improving uniformity of the light emitted by the light source assembly 10.
In other examples, the light emitted to the first lens may also include light emitted from other LED lamps, that is, the first light beam may also be a light beam formed by processing light emitted from several LED lamps through the first lens.
Moreover, since the covered irradiation area of the first light beam on the second lens array 13 is related to the gap (L) between the first lens array 12 and the second lens array 13, and the larger the gap (i.e. the larger the distance between the first lens array 12 and the second lens array 13 is), the larger the covered irradiation area of the first light beam on the second lens array 13 is, i.e. the larger the number of target lenses that can be covered by the first light beam is, i.e. the finer the first light beam can be divided, the higher the energy uniformity between the obtained target light beams is; therefore, a certain gap can be provided between the first lens array 12 and the second lens array 13 for the purpose of improving the energy uniformity of the plurality of target beams.
In addition, in order to ensure the energy intensity of the target beam, the gap between the first lens array 12 and the second lens array 13 should not be too large; generally, the gap between the first lens array 12 and the second lens array 13 is 3 mm to 30 mm, and in this interval, not only the energy intensity of the target beam can be ensured, but also the purpose of improving the energy uniformity of the target beams can be achieved.
Optionally, as shown in fig. 4, the first lens 121 includes a first transmission region 1211 and a second transmission region 1212, the first transmission region 1211 is located at a periphery of the second transmission region 1212, and light emitted from the light source 11 passes through the first lens to form a first sub-beam corresponding to the first transmission region 1211 and a second sub-beam corresponding to the second transmission region 1212;
the first sub-beams emitted to the second lens array 13 form a plurality of third sub-beams after passing through a plurality of first sub-objective lenses of the second lens array 13, the second sub-beams emitted to the second lens array 13 form a plurality of fourth sub-beams after passing through a plurality of second sub-objective lenses of the second lens array 13, and the plurality of third sub-beams and the plurality of fourth sub-beams are used for forming the objective beams.
First, the lenses in the first lens array 12 are used to convert the light emitted from the light source 11 into a collimated light beam.
Next, in the present embodiment, the first transmission region 1211 may be understood as an edge transmission region of the first lens 121, and the second transmission region 1212 may be understood as a central lens region of the first lens 121. That is, when light emitted from the light source 11 is directed to the first transmission region 1211, since the first transmission region 1211 is adjacent to the edge transmission region of the other lens in the first lens array 12, it is difficult to form a collimated light beam, that is, it is difficult to form a vertical light beam perpendicularly directed to the second lens array 13, but it is difficult to form a divergent light beam when the light passes through the region.
Also, the division of the first and second transmission regions 1211 and 1212 of the first lens may be further divided based on the property of the emitted light; for example, the light-transmitting area of the first lens may be divided into a grid-shaped light-transmitting area, and the property of the light emitted through each cell is analyzed, and if the emitted light is a collimated light beam, the light-transmitting area corresponding to the grid is determined as the second light-transmitting area 1212, and if the emitted light is a divergent light, the light-transmitting area corresponding to the grid is determined as the first light-transmitting area 1211.
It can be seen that, in the case that the first lens 121 includes the first transmission region 1211 and the second transmission region 1212, the light emitted from the light source 11 and directed to the first lens passes through the first transmission region 1211 and the second transmission region 1212 of the first lens to form a first sub-beam and a second sub-beam, respectively, where the first sub-beam can be understood as divergent light directed to the second lens array 13, and the second sub-beam can be understood as a collimated light directed to the second lens array 13, i.e. a vertical light beam perpendicular to the second lens array 13.
The first sub-beam emitted to the second lens array 13 is divided and refracted by the plurality of first sub-objective lenses on the second lens array 13 to form a plurality of third sub-beams, that is, the first sub-beam emitted to the second lens array 13 is divided by the plurality of first sub-objective lenses to form a plurality of collimated beams, even if the energy of the first sub-beam emitted to the second lens array 13 is distributed to the plurality of third sub-beams, thereby achieving the purpose of improving the uniformity of the emitted light.
The second sub-beam emitted to the second lens array 13 is divided and refracted by the plurality of second sub-objective lenses on the second lens array 13 to form a plurality of fourth sub-beams, that is, the second sub-beam emitted to the second lens array 13 is divided by the plurality of second sub-objective lenses to form a plurality of collimated beams, that is, the energy of the second sub-beam emitted to the second lens array 13 is distributed to the plurality of fourth sub-beams, and the purpose of improving the uniformity of the emitted light is achieved. Moreover, the second sub-target lens can also collimate the second sub-beam again, so that a plurality of collimated fourth sub-beams are formed, that is, the collimation degree of the emitted light beam can be further improved, and the purpose of further improving the uniformity of the emitted light beam is further achieved.
Thus, the first sub-beam formed by the first transmission region 1211 is divided into a plurality of third sub-beams with uniform energy, and the second sub-beam formed by the second transmission region 1212 is divided into a plurality of fourth sub-beams with uniform energy, so as to improve the influence of the first transmission region 1211, that is, the influence of the first transmission region 1211 on the light, so that the light beam finally emitted by the second lens array 13 has the characteristic of uniform energy, and the purpose of improving the uniformity of the light emitted by the light source assembly is achieved.
It is to be understood that, since the first lens array 12 and the second lens array 13 are arranged in a stacked manner, the plurality of second sub-target lenses in the second lens array 13 can be understood as lenses covered by the facing area of the second transmission area 1212 of the first lens on the first lens array 12 on the second lens array 13, that is, the plurality of second sub-target lenses are arranged facing the second transmission area 1212 of the first lens.
Moreover, since the first sub-beam is divergent light, the coverage irradiation area of the first sub-beam on the second lens array 13 further includes a facing area on the second lens array 13 with respect to other lenses in the first lens array 12, that is, the energy of the first sub-beam can be distributed to the target lenses corresponding to other lenses in the first lens array 11, that is, the energy of the first sub-beam can be distributed to the beams formed by other lenses adjacent to the first lens, that is, the energy of the first sub-beam can be distributed more uniformly, so as to achieve the purpose of improving the energy uniformity of the finally formed target beam.
Further, since the first sub-beam is divergent light, after the first sub-beam is irradiated to the second lens array 13, the covered irradiation area of the first sub-beam on the second lens array 13 includes not only the target lens covered by the orthographic projection of the first transmission area on the second lens array 13, but also other covered irradiation areas adjacent to the orthographic projection; and in case that the other covered irradiation area intersects with the orthographic projection of the second transmission area on the second lens array 13, i.e. in case that the covered irradiation area of the first sub-beam on the second lens array 13 intersects with the covered irradiation area of the second sub-beam on the second lens array 13, the target beam comprises a beam formed by the superposition of the third sub-beam and the fourth sub-beam.
As shown in fig. 4, the third and fourth sub-beams may overlap at a target area 16 on a side of the second lens array 13 away from the first lens array 12 and form a target beam. Furthermore, the target area 16 may be understood as the third sub-beam and the fourth sub-beam in the overlapping area, i.e. the third sub-beam and the fourth sub-beam may overlap in the overlapping area and form a target beam with uniform energy.
Further, under the condition that light source subassembly was used to in the printer, can set up the screen of printer in target area/stack region to the light that makes the light source subassembly send can form the even facula of energy at the receiving face of screen, and then reaches the purpose that promotes the printing precision of printer.
It is understood that the finally formed object beam includes not only the fourth sub-beam divided and refracted by the plurality of second sub-object lenses but also a beam formed by the third sub-beam and the fourth sub-beam being superimposed; and because the first sub-beam is uniformly distributed into the plurality of third sub-beams, that is, the energy included in the third sub-beams is not much, the energy included after the third sub-beam and the fourth sub-beam are superposed is also relatively close to the energy included in the fourth sub-beam, so that the purpose that the finally formed target beam has uniform energy can be achieved.
Moreover, the irradiation area covered by the first sub-beam on the second lens array 13 is positively correlated with the gap between the first lens array 12 and the second lens array 13; therefore, the gap between the first lens array 12 and the second lens array 13 can be increased to further differentiate the energy of the first sub-beam, so as to improve the energy uniformity of the target beams.
Further, since the lenses in the second lens array 13 also have a light condensing effect, the second sub-beams that have been directed to the second lens array 13 are refracted through the plurality of fourth sub-beams that have been split and refracted by the plurality of second sub-objective lenses on the second lens array 13, and thus, the second lens array 13 has a re-collimating effect, that is, the light that has finally been directed through the second lens array 13 has not only a characteristic of good uniformity but also a characteristic of high degree of collimation.
It can be seen that when the light source subassembly that this application provided was applied to in the printer, especially during the photocuring printer, can effectively improve the printing precision of printer.
Note that, as shown in fig. 5 and 6, the first lens array 12 may be a matrix lens array composed of a plurality of first lenses, and the second lens array 13 may be a microlens array layer composed of a plurality of objective lenses. The objective lens in the second lens array 13 may be a microlens, especially an aspheric convex lens, so that the light emitted from the first lens array 12 can be better divided and overlapped by the objective lens, and finally an objective beam is formed, so as to achieve the purpose of improving the uniformity of the light emitted from the light source assembly 10.
In addition, the size of the first lens is 16 mm-28 mm, and the size of the target lens is 0.5 mm-1 mm; in addition, in order to improve the ability of the objective lens to split light emitted from only the first lenses, each of the first lenses may be disposed to face 800 to 1400 objective lenses.
Optionally, the light source module 10 further includes a lens support 14 and a lens cover 15, the lens cover 15 has a receiving cavity with a first opening and a second opening, and the lens support 14, the first lens array 12 and the second lens array 13 are sequentially stacked in the receiving cavity, the lens support 14 is used for carrying the first lens array 12;
the first opening is disposed toward the light source 11, and the target light beam emitted through the second lens array 13 is emitted through the second opening.
In this embodiment, by providing the lens holder 14, the first lens array 12 can be more preferably provided in the lens cover 15, and the support height of the lens holder 14 can be changed by changing the height of the support leg of the lens holder 14, thereby adjusting the width of the gap between the first lens array 12 and the second lens array 13.
Further, by providing the lens cover 15, it is possible to prevent the light emitted from the light source 11 from being diffused outward, and to concentrate the light emitted from the light source 11 toward the second opening, thereby improving the light concentration ratio.
The second lens array 13 can be disposed in the lens housing 15 in a snap-fit or embedded manner.
Optionally, the light source assembly 10 further includes a light source base, and the light source 11, the lens holder 14 and the lens cover 15 are all disposed on the same side of the light source base;
the lens support 14 comprises supporting legs and a lens supporting part, the lens supporting part is arranged on the light source base through the supporting legs, and the side wall of the lens cover 15 is provided with a avoidance hole matched with the supporting legs, so that at least part of the supporting legs are positioned outside the lens cover 15;
wherein, the side wall of the lens cover 15 is provided with heat dissipation holes 151, and the heat dissipated from the light source 11 can exchange heat with the outside through the heat dissipation holes 151.
In this embodiment, the supporting legs of the lens support 14 are partially exposed outside the lens cover 15, so that the height of the supporting legs can be adjusted without detaching the lens cover 15, and the adjustment of the width of the gap between the first lens array 12 and the second lens array 13 is further realized; moreover, the heat dissipation holes 151 are formed in the sidewall of the lens cover 15, so that the heat dissipation capability of the light source assembly 10 can be improved.
The embodiment of this application still provides a printer, and this printer includes above-mentioned light source subassembly.
It should be noted that, the implementation manner of the light source assembly embodiment is also applicable to the embodiment of the printer, and can achieve the same technical effect, and details are not described herein again.
As shown in fig. 7 to 12, the printer further includes a screen 20, the first lens array 12 and the second lens array 13 are both located below the screen 20, and the second lens array 13 is located between the first lens array 12 and the screen 20, light emitted from the light source 11 forms a target light beam emitted to the screen 20 after passing through the first lens array 12 and the second lens array 13, even though the light beam emitted to the screen 20 has not only high collimation degree, but also uniform energy, thereby achieving the purpose of improving the printing precision of the printer.
In one example, the screen 20 may be a black and white LCD screen for the purpose of further improving the printing accuracy of the printer.
Optionally, as shown in fig. 10, the printer further includes a base 30, a curing support table 40 and a light shield 50, wherein the base 30, the light source assembly 10 and the curing support table 40 are sequentially arranged along the emitting direction of the light source assembly 10;
the light shield 50 includes a first light shield frame 51, a second light shield frame 52, and a light shield 53, wherein the first light shield frame 51 and the second light shield frame 52 are located between the base 30 and the curing support 40, and the first light shield frame 51 and the second light shield frame 52 are disposed around the light source assembly 10 and form a light shield frame disposed around the light source assembly 10;
the first light shielding frame 51 and the second light shielding frame 52 are hermetically connected by a light shielding strip 53.
In this embodiment, by providing the light shield 50, light emitted from the light source assembly 10 can be prevented from being emitted to the outside of the printer, and the influence of the light emitted from the light source assembly 10 on the operator can be reduced.
Further, the first light shielding frame 51 and the second light shielding frame 52 are hermetically connected by the light shielding strip 53, and the light shielding effect of the light shield 50 can be further improved.
Further optionally, the light-shielding strip 53 includes two layers, one of which may be a black opaque plastic film, and the other may be a double-sided adhesive tape; the first light-shielding frame 51 and the second light-shielding frame 52 are adhered and connected by the light-shielding strip 53 to block light emitted from the light source 11 from irradiating the printer and block the light.
The light source base and the base 30 of the light source assembly 10 may be an integral structure.
Optionally, as shown in fig. 11, the printer further includes a forming platform 60 disposed corresponding to the light source assembly 10, and a forming plane of the forming platform 60 is a laser engraving plane.
In this embodiment, the forming plane of the forming platform 60 is set as a laser etching plane, so that the adhesion of the model on the forming platform 60 can be improved, and the model can be better adhered to the forming platform 60.
In addition, the printer further includes a column 70, a driving mechanism 80 and a trough 90, the column 70 is disposed on a first side of the curing support table 40, the light source assembly 10 is disposed on a second side of the curing support table 40, the first side and the second side are two opposite sides of the curing support table 40, the forming platform 60 is connected to the column 70 through the driving mechanism 80, and the driving mechanism 80 can drive the forming platform 60 to move along a guide rail on the column 70 relative to the curing support table 40, so as to print a model of the printer.
As shown in fig. 12, the driving mechanism 80 includes a screw motor 81, a linear guide 82, a forming platform support frame 83 and a linear slider 84, the linear slider 84 is slidably connected to the linear guide 82 disposed on the upright 70, and the forming platform support frame 83 is fixedly connected to the linear slider 84, so that the forming platform 60 disposed on the forming platform support frame 83 can move up and down along the linear guide 82 along with the linear slider 84. In addition, the screw motor 81 is in driving connection with the forming platform support frame 83, and is used for driving the forming platform support frame 83 to drive the linear slider 84 to move up and down along the linear guide 82, so that the forming platform 60 can move up and down along the linear guide 82 along with the forming platform support frame 83, and therefore the forming platform 60 can move up and down.
In addition, the screen 20 and the trough 90 are also arranged on the curing support table 40; wherein a trough 90 is provided on the surface of the curing support 40 facing away from the light source assembly 10 for providing the model-printing material.
It should be noted that, during the printing process, the driving mechanism 80 drives the forming platform 60 to enter the trough 90, the vertical light with uniform energy emitted by the light source assembly 10 sequentially penetrates through the screen 20 and the trough 90, then the image displayed on the screen 20 is projected onto the trough 90, the resin in the trough 90 is solidified when contacting the light emitted by the light source assembly 10, and is adhered to the laser engraving plane of the forming platform 60 to complete the printing and solidification, the driving mechanism 80 drives the forming platform 60 to ascend, the printed model is peeled from the trough 90, and the release is completed; and then repeatedly printing the next layer, and finally realizing the printing of the model.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The light source assembly is characterized by comprising a light source, a first lens array and a second lens array, wherein the first lens array and the second lens array are sequentially arranged above the light source, and the first lens array is positioned between the light source and the second lens array;
the light emitted by the light source forms a first light beam which is emitted to the second lens array after passing through the first lens of the first lens array, the first light beam is divided by the target lenses on the second lens array to form a plurality of target light beams with uniform energy, and the uniform energy is used for indicating that the energy values of the target light beams are in a preset range.
2. The light source assembly according to claim 1, wherein the first lens includes a first transmission region and a second transmission region, the first transmission region is located at a periphery of the second transmission region, and light emitted from the light source passes through the first lens to form a first sub-beam corresponding to the first transmission region and a second sub-beam corresponding to the second transmission region;
the first sub-beams emitted to the second lens array form a plurality of third sub-beams after passing through a plurality of first sub-target lenses of the second lens array, the second sub-beams emitted to the second lens array form a plurality of fourth sub-beams after passing through a plurality of second sub-target lenses of the second lens array, and the plurality of third sub-beams and the plurality of fourth sub-beams are used for forming the target beams.
3. The light source assembly according to claim 2, wherein the target light beam comprises a light beam formed by the third sub-light beam and the fourth sub-light beam in a superposition manner, in a case where there is an intersection between a covered irradiation area of the first sub-light beam on the second lens array and a covered irradiation area of the second sub-light beam on the second lens array.
4. The light source assembly according to claim 3, wherein the first lens array and the second lens array have a gap therebetween, and the width of the gap is positively correlated with the size of the irradiation area covered by the first sub-beam on the second lens array.
5. The light source assembly according to any one of claims 1 to 4, further comprising a lens holder and a lens cover, wherein the lens cover has a receiving cavity with a first opening and a second opening, and the lens holder, the first lens array and the second lens array are sequentially stacked in the receiving cavity, and the lens holder is used for carrying the first lens array;
wherein the first opening is disposed toward the light source, and the object beam emitted through the second lens array is emitted through the second opening.
6. The light source assembly of claim 5, further comprising a light source base, wherein the light source, the lens holder, and the lens cover are disposed on a same side of the light source base;
the lens support comprises supporting legs and a lens supporting part, the lens supporting part is arranged on the light source base through the supporting legs, and avoidance holes matched with the supporting legs are formed in the side wall of the lens cover, so that at least part of the supporting legs are located outside the lens cover;
the side wall of the lens cover is provided with heat dissipation holes, and heat dissipated by the light source can exchange heat with the outside through the heat dissipation holes.
7. A printer, characterized in that it comprises a light source assembly according to any one of claims 1 to 6.
8. The printer according to claim 7, further comprising a screen, wherein the first lens array and the second lens array are both located below the screen, and the second lens array is located between the first lens array and the screen, and light emitted from the light source is converted by the first lens array and the second lens array to form a target light beam which is emitted to the screen;
wherein, the screen is an LCD black and white screen.
9. The printer according to claim 7, further comprising a base, a curing support stage, and a light shield, the base, the light source assembly, and the curing support stage being arranged in sequence along a light exit direction of the light source assembly;
the light shield comprises a first light shielding frame body, a second light shielding frame body and a light shielding strip, wherein the first light shielding frame body and the second light shielding frame body are positioned between the base and the curing support table, and the first light shielding frame body and the second light shielding frame body are arranged around the light source assembly and form a light shielding frame body arranged on the light source assembly;
the first shading frame body and the second shading frame body are connected in a sealing mode through the shading strips.
10. The printer according to any one of claims 7 to 9, further comprising a forming platform disposed corresponding to the light source assembly, wherein the forming platform has a forming plane that is a laser engraving plane.
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| CN202111268704.3A CN114083798A (en) | 2021-10-29 | 2021-10-29 | Light source assembly and printer |
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| CN202111268704.3A CN114083798A (en) | 2021-10-29 | 2021-10-29 | Light source assembly and printer |
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Cited By (1)
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| CN115339100A (en) * | 2022-09-02 | 2022-11-15 | 深圳市智能派科技有限公司 | Photocuring 3D printer light source system and photocuring 3D printer |
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