3D printer light source module and 3D printer

Abstract

The utility model provides a 3D printer light source module which comprises a display screen light source and a lens module, the display screen light source is provided with a plurality of pixel units arranged in an array mode, the lens module comprises a plurality of cylindrical lenses arranged in an array mode, the positions of the cylindrical lenses correspond to the positions of the pixel units of the display screen light source, and the pixel units of the display screen light source are arranged on the lens module. The cylindrical lenses are mutually independent, one end surface of each cylindrical lens is a light incident surface, the other end surface of each cylindrical lens is a light emergent surface, and the refractive index of each cylindrical lens is gradually increased from the periphery to the center. According to the utility model, the light source of the display screen can be separated from the trough, and a real image can not be excessively amplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printer technical field especially relates to a 3D printer light source module and 3D printer. BACKGROUND

[0002] 3D printer passes the image that display screen light source sent and irradiates resin to make resin solidification. In prior art, the 3D printer based on LCD is the predetermined image that is formed by LCD display screen light source and irradiates resin to make resin solidification, can refer to the 3D printer based on the LCD light source disclosed in CN207916049U. The display screen needs to be close to the lower surface of the trough, otherwise it cannot be shaped, and the close display screen of the lower surface of the trough will cause the display screen to be poor in heat dissipation effect, thereby affecting the performance of the display screen. SUMMARY

[0003] Therefore, it is necessary to provide a 3D printer light source module and a 3D printer, which can separate the display screen light source from the trough and can not excessively magnify the real image.

[0004] The utility model provides a 3D printer light source module, which comprises:

[0005] A display screen light source having a plurality of pixel units arranged in an array;

[0006] A lens module comprising a plurality of cylindrical lenses arranged in an array, the positions of the cylindrical lenses corresponding to the pixel units of the display screen light source, the cylindrical lenses being independent of each other, one end surface of the cylindrical lenses being an incident light surface, the other end surface of the cylindrical lenses being an outgoing light surface, and the refractive index of each cylindrical lens gradually increasing from the outer periphery to the center.

[0007] Further, the incident light surface and the outgoing light surface are flat surfaces.

[0008] Further, the cylindrical lenses are cylindrical lenses or polygonal lenses.

[0009] Further, the polygonal lenses are quadrilateral lenses or hexagonal lenses.

[0010] The utility model provides a 3D printer, which comprises the 3D printer light source module and a trough, and the trough is arranged at a distance from the incident light surface of the cylindrical lens.

[0011] Compared with the prior art, the utility model has the advantages that: the image light beam displayed by the display screen light source will pass through the columnar lens of the lens module, because the refractive index of the columnar lens gradually increases from the outer periphery to the center, after the light beam enters the columnar lens from the light-in surface, the light beam will curve in the columnar lens to the light-out surface and exit from the light-out surface, forming a real image at the printing position of the tank, and then the resin can be solidified, the utility model can keep the display screen light source apart from the tank, so as to facilitate heat dissipation of the display screen light source, and can control the magnification ratio of the real image, so that the real image is not excessively enlarged to cause the problem of insufficient real image energy. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the 3D printer of the utility model.

[0013] Figure 2 It is a structure schematic view of the 3D printer light source module of one specific embodiment of the utility model.

[0014] Figure 3 It is Figure 2 It is a columnar lens imaging schematic view.

[0015] Figure 4 It is a structure schematic view of the lens module of one specific embodiment of the utility model.

[0016] The following specific embodiments will further illustrate the utility model in combination with the above drawings. SPECIFIC EMBODIMENTS

[0017] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model. It can be understood that the drawings are only provided for reference and illustration, and are not used to limit the utility model. The connection relationship shown in the drawings is only for clear description, and does not limit the connection mode.

[0018] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or a middle component can exist at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. It should also be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The terms used in the description of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0019] It should also be noted that in the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0020] Referring to Figure 1 The present application provides a 3D printer, which comprises a 3D printer light source module 100 and a trough 200, and the 3D printer light source module 100 is arranged apart from the trough 200.

[0021] Referring to Figures 2-4 The 3D printer light source module 100 comprises a display screen light source 10 and a lens module 20. The display screen light source 10 has a plurality of pixel units 121 arranged in an array, and the generated image is composed of a plurality of pixels.

[0022] By controlling the switch of the pixel unit 121, the display screen light source 10 can display an image of a predetermined shape, and the image light beam comprises a plurality of unit light beams X.

[0023] Specifically, the display screen light source 10 preferably adopts an LCD display screen light source, i.e. the display screen light source 10 comprises a light source 11 and an LCD display screen 12, the LCD display screen 12 has a pixel structure arranged in an array, and the light source 11 will form an array of image light beams after passing through the LCD display screen 12.

[0024] The lens module 20 comprises a plurality of cylindrical lenses 21 arranged in an array, the positions of the cylindrical lenses 21 corresponding to the pixel units 121 of the display screen light source 10, which can be one cylindrical lens 21 corresponding to one pixel unit 121, or one cylindrical lens 21 corresponding to a plurality of pixel units 121.

[0025] The cylindrical lenses 21 are independent of each other, one end face of the cylindrical lens 21 is an incident light face 211, and the other end face of the cylindrical lens 21 is an exit light face 212, and the refractive index of each cylindrical lens 21 gradually increases from the outer periphery 213 to the center O.

[0026] The outer periphery sides of the cylindrical lenses 21 are in close contact with each other, the exit light faces 212 are aligned on the same plane, and the incident light faces 211 are aligned on the same plane. In this embodiment, the incident light face 211 and the exit light face 212 are planes.

[0027] More specifically, the cylindrical lens 21 is a cylindrical lens or a polygonal lens. More specifically, the polygonal lens is a quadrilateral lens or a hexagonal lens, and the edges of two adjacent polygonal lenses are in close contact.

[0028] One unit light beam X or a plurality of unit light beams X will be incident on a cylindrical lens 21, and due to the gradually increasing refractive index of the cylindrical lens 21 from the outer periphery 213 to the center O, the light beam will curve in the cylindrical lens 21 and will be reflected at an appropriate radial thickness, the curved concave portion facing the center of the cylindrical lens 21, and then exiting from the exit light face 212. By controlling the degree of gradual change of the refractive index and the length of the cylindrical lens 21, the distance between the printing position and the exit light face 212 can be equal to the distance between the display screen light source 10 and the incident light face 211, a real image Y can be formed at the printing position of the tank 200, and the resin can be cured.

[0029] The display screen light source 10 can be spaced apart from the tank 200 to facilitate heat dissipation of the display screen light source 10. Moreover, the magnification ratio of the real image Y can be controlled so that the real image Y is controlled within a small magnification range (for example, 1:1 or 1:2, etc.) relative to the image light beam, so that the real image Y is not excessively enlarged to cause insufficient curing energy of the real image Y. The present application only needs to use an array of cylindrical lenses to achieve imaging.

[0030] In the specification and claims of the present application, the words "comprise / contain" and the words "have / including" and their variants are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0031] For the sake of clarity, some features of the present application are described in different embodiments, however, these features can also be described in a single embodiment. Conversely, some features of the present application are described in a single embodiment for the sake of brevity, however, these features can also be described in different embodiments, alone or in any suitable combination.

[0032] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A 3D printer light source module, characterized in that, include: A display screen light source, wherein the display screen light source has multiple pixel units arranged in an array; The lens module includes an array of multiple cylindrical lenses, the positions of which correspond to the pixel units of the display screen light source. The cylindrical lenses are independent of each other, one end face of each cylindrical lens is the light-incident surface, and the other end face of each cylindrical lens is the light-exit surface. The refractive index of each cylindrical lens gradually increases from the outer periphery to the center.

2. The 3D printer light source module according to claim 1, characterized in that, The light-incident surface and the light-exit surface are planar.

3. The 3D printer light source module according to claim 1, characterized in that, The cylindrical lens is either a cylindrical lens or a polygonal lens.

4. The 3D printer light source module according to claim 3, characterized in that, The polygonal lens is either a quadrilateral lens or a hexagonal lens.

5. A 3D printer, characterized in that, The 3D printer includes a 3D printer light source module as described in any one of claims 1-4 and a material tank, wherein the material tank and the light incident surface of the cylindrical lens are spaced apart.

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