Illuminating device of imaging system for 3D printing

Abstract

The utility model discloses a lighting device of an imaging system for 3D printing, and relates to the technical field of lighting devices. The device comprises an illumination housing, an illumination mechanism, a condensation cone device and a micro-mirror assembly. The lighting mechanism is installed in the lighting shell and comprises a lighting assembly, and the lighting assembly comprises an LED matrix composed of a plurality of small-power LED lamps. The condensation cone device comprises a condensation cone; the micro-mirror assembly is arranged on the bottom face of the lighting mechanism in a threaded mode, and the micro-mirror assembly comprises a DMD digital micro-mirror device. According to the utility model, by starting the LED matrix, light beams generated by the LED matrix are transmitted to the interior of the condensation cone, and the light beams subjected to light equalization processing by the condensation cone are transmitted to the DMD digital micromirror device and are projected through the DMD digital micromirror device, so that a single high-power LED light source is replaced by a small-particle low-power LED array; and the use of a single high-power ultraviolet LED light source is avoided, so that the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting devices, and in particular relates to a lighting device for an imaging system used for 3D printing. Background Art

[0002] With the development of technology in the field of optical processing, DMD can be used to complete the technology of visual digital information display, namely DLP technology. It is a display system that digitally processes the image signal and then projects the light. The light beam generated by the LED light source passes through a high-speed rotating color wheel, decomposes it into three primary colors or a single color, and projects it onto the DMD digital micromirror device. After reflection, the DMD digital micromirror device passes through the synthetic light path of the color separation or synthesis prism, and is projected through the projection lens group to form an image.

[0003] In the process of 3D printing imaging, a light beam needs to be emitted by a light source, and after light-averaging treatment, the processed light is projected onto a DMD digital micromirror device to achieve imaging. Existing light sources generally use a single high-power ultraviolet LED light source for irradiation, and the light beam it generates is then subjected to light-averaging treatment. However, a single high-power ultraviolet LED light source is difficult to purchase, has high cost, and cannot achieve high power. Utility Model Content

[0004] The purpose of the utility model is to provide an illumination device for an imaging system for 3D printing, which solves the problems in the above-mentioned background technology by arranging an LED matrix and a focusing cone component.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses an illumination device for an imaging system used for 3D printing, comprising an illumination housing, an illumination mechanism, a light-collecting cone device and a micromirror assembly; the illumination mechanism is installed inside the illumination housing, the illumination mechanism comprises an illumination assembly, the illumination assembly comprises an LED matrix composed of a plurality of low-power LED lamps, the LED matrix comprises a plurality of LED lamps connected in series or in parallel as required, and the LED matrix is ​​electrically connected to a common control terminal, the LED lamps are controlled and current is limited by a constant current source driver of the LED; the light-collecting cone device comprises a light-collecting cone; the micromirror assembly is threadedly arranged on the bottom surface of the illumination mechanism, and the micromirror assembly comprises an angle-adjustable DMD digital micromirror device.

[0007] The utility model is further configured that the lighting housing comprises a rotating cylinder, a plurality of spiral slideways are provided on the circumferential side of the rotating cylinder, and a transmission gear is fixedly connected to the upper surface of the lighting housing.

[0008] The utility model is further configured as follows: the lighting mechanism also includes a transmission assembly, the transmission assembly includes a transmission cylinder, a transmission base is fixedly connected to the upper surface of the transmission cylinder, a plurality of first connecting columns are fixedly connected to the lower surface of the transmission base, a rotating gear is rotatably connected to the lower end of the first connecting column, the rotating gear is meshed with the transmission gear, a plurality of limiting channels are opened on the circumferential side of the transmission cylinder, and the limiting channels are adapted to the corresponding spiral slide positions; the lighting assembly also includes a lighting installation disk coaxially slidably arranged inside the transmission cylinder, a wiring tube is fixedly installed on the upper surface of the lighting installation disk, and the LED matrix is ​​fixedly installed on the lower surface of the lighting installation disk.

[0009] The utility model is further configured as follows: a plurality of transmission columns are fixedly connected to the side surface of the focusing cone, the lighting mounting plate is fixedly connected to the upper surface of the transmission column, one side surface of the transmission column is tightly attached to the inner wall of the transmission cylinder, and a second connecting column is fixedly connected to the side surface of the transmission column close to the transmission cylinder; the second connecting column is slidably matched with the corresponding spiral slideway, the second connecting column is slidably matched with the corresponding limiting channel, and one end of the second connecting column is fixedly connected to the limiting disk.

[0010] The utility model is further configured that the micromirror assembly also includes a micromirror mounting disk, the upper surface of the micromirror mounting disk is fixedly connected with a threaded tube, the threaded tube is threadedly matched with the transmission cylinder, and the bottom surface of the rotating cylinder is tightly attached to the upper surface of the micromirror mounting disk; the micromirror mounting disk is coaxially provided with a mounting cavity, and the DMD digital micromirror device is rotatably arranged inside the mounting cavity.

[0011] The utility model has the following beneficial effects:

[0012] The utility model is provided with an LED matrix, a focusing cone assembly and a micromirror assembly. When the LED matrix is ​​started, the light source generated by the LED matrix is ​​transmitted to the focusing cone assembly. Under the action of the focusing cone, the LED light source is treated with uniform light. The light source after the uniform light treatment is then projected into the micromirror assembly and projected through the DMD digital micromirror device. Under the action of the focusing cone, the original single high-power LED is replaced with a small-particle, low-power LED array, so that the power loss of the device is reduced and power resources are saved. The utility model is provided with an illumination housing, an illumination mechanism and a focusing cone assembly. When the position of the focusing cone needs to be adjusted, the transmission gear is driven to rotate synchronously by rotating the rotating gear. Under the action of the spiral slide and the limit channel, the second connecting column drives the focusing cone to move synchronously, thereby adjusting the spacing between the focusing cone and the DMD digital micromirror device, so that the light beam transmitted to the DMD digital micromirror device is adjusted synchronously, thereby improving the adjustability of the device and realizing dynamic adjustment of the light intensity. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 The figure is a schematic diagram of the structure of an illumination device of an imaging system for 3D printing.

[0015] Figure 2 for Figure 1 Schematic diagram of the longitudinal cross-sectional structure.

[0016] Figure 3 It is a structural schematic diagram of the lighting housing in the utility model.

[0017] Figure 4 It is a structural schematic diagram of the lighting mechanism in the utility model;

[0018] Figure 5 for Figure 4 Schematic diagram of the longitudinal cross-sectional structure.

[0019] Figure 6 It is a structural schematic diagram of the focusing cone device in the utility model.

[0020] Figure 7 It is a structural schematic diagram of the micromirror assembly in the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1-lighting housing, 101-rotating cylinder, 102-spiral slide, 103-transmission gear, 2-lighting mechanism, 21-transmission assembly, 211-transmission cylinder, 212-transmission base, 213-first connecting column, 214-rotating gear, 215-limiting channel, 22-lighting assembly, 221-LED matrix, 222-lighting mounting plate, 223-wiring tube, 3-focusing cone, 301-focusing cone, 302-transmission column, 303-second connecting column, 304-limiting disk, 4-micromirror assembly, 401-DMD digital micromirror device, 402-micromirror mounting plate, 403-threaded tube, 404-mounting cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-7 The utility model is a lighting device for an imaging system for 3D printing, comprising a lighting housing 1, a lighting mechanism 2, a focusing cone device 3 and a micromirror assembly 4; the lighting mechanism 2 is installed inside the lighting housing 1, the lighting mechanism 2 comprises a lighting assembly 22, the lighting assembly 22 comprises an LED matrix 221 composed of a plurality of low-power LED lamps, the LED matrix 221 comprises a plurality of LED lamps connected in series or in parallel as required, and the LED matrix 221 is electrically connected to a common control terminal, the LED lamps are controlled and current is limited by a constant current source driver of the LED, so as to prevent damage caused by excessive current; the focusing cone device 3 comprises a focusing cone 301; the micromirror assembly 4 is threadedly arranged on the bottom surface of the lighting mechanism 2, and can be disassembled and installed as required, and the micromirror assembly 4 comprises an angle-adjustable DMD digital micromirror device 401.

[0025] In this embodiment of the present invention, the lighting housing 1 includes a rotating cylinder 101 , a plurality of spiral slideways 102 are provided on the side surface of the rotating cylinder 101 , and a transmission gear 103 is fixedly connected to the upper surface of the lighting housing 1 .

[0026] In the embodiment of the present invention, the lighting mechanism 2 further includes a transmission assembly 21, which includes a transmission cylinder 211. The outer wall of the transmission cylinder 211 is in close contact with the inner wall of the rotating cylinder 101. The upper surface of the transmission cylinder 211 is fixedly connected to a transmission base 212. The lower surface of the transmission base 212 is fixedly connected to a plurality of first connecting columns 213. The lower end of the first connecting column 213 is rotatably connected to a rotating gear 214. The rotating gear 214 is meshed with the transmission gear 103. Rotating any rotating gear 214 drives the transmission gear 103. 3 rotates synchronously, so that the lighting housing 1 rotates as a whole, a plurality of limiting channels 215 are opened on the side surface of the transmission cylinder 211, and the limiting channels 215 are adapted to the positions of the corresponding spiral slideways 102; the lighting assembly 22 also includes a lighting installation plate 222 coaxially slidably arranged inside the transmission cylinder 211, and a wiring tube 223 is fixedly installed on the upper surface of the lighting installation plate 222. The power supply is connected through the wiring tube 223 to provide power for the LED matrix 221, and the LED matrix 221 is fixedly installed on the lower surface of the lighting installation plate 222.

[0027] In this implementation case of the utility model, a plurality of transmission columns 302 are fixedly connected to the side surface of the focusing cone 301, and the lighting installation disk 222 is fixedly connected to the upper surface of the transmission column 302. The size of the upper surface of the focusing cone 301 is consistent with the size of the LED matrix 221 and is located directly below the LED matrix 221. One side of the transmission column 302 is in close contact with the inner wall of the transmission cylinder 211, and a second connecting column 303 is fixedly connected to the side surface of the transmission column 302 close to the transmission cylinder 211; the second connecting column 303 is slidably matched with the corresponding spiral slide 102, and the second connecting column 303 is slidably matched with the corresponding limiting channel 215. When the spiral slide 102 rotates, it drives the second connecting column 303 to move. At the same time, under the restriction of the limiting channel 215, the second connecting column 303 moves along the direction of the limiting channel 215, and one end of the second connecting column 303 is fixedly connected to the limiting disk 304.

[0028] In this implementation case of the utility model, the micromirror assembly 4 also includes a micromirror mounting disk 402, and a threaded tube 403 is fixedly connected to the upper surface of the micromirror mounting disk 402. The threaded tube 403 is threadedly matched with the transmission cylinder 211, and the bottom of the rotating cylinder 101 is close to the upper surface of the micromirror mounting disk 402; by rotating the micromirror assembly 4, the installation and disassembly of the micromirror assembly 4 are completed, and the micromirror mounting disk 402 is coaxially provided with an installation cavity 404, and the DMD digital micromirror device 401 is rotatably arranged inside the installation cavity 404, and the size of the DMD digital micromirror device 401 is consistent with the size of the lower surface of the focusing cone 301.

[0029] The working principle of this embodiment is as follows: the micromirror assembly 4 is installed on the bottom surface of the transmission cylinder 211 through the cooperation between the threaded tube 403 and the thread of the transmission cylinder 211. When the LED matrix 221 is started, the light beam generated by the LED light source is transmitted to the focusing cone 3. Through the action of the focusing cone 301, the light beam generated by the LED matrix 221 is subjected to light homogenization. The LED light beam after light homogenization continues to be transmitted to the DMD digital micromirror device 401, and then the LED light beam is selectively reflected and projected by adjusting the angle deflection of the DMD digital micromirror device 401.

[0030] When it is necessary to adjust the spacing between the focusing cone 301 and the DMD digital micromirror device 401, the rotating gear 214 is rotated, and under the meshing action of the rotating gear 214 and the transmission gear 103, the transmission gear 103 drives the rotating cylinder 101 to rotate synchronously; through the cooperation of the second connecting column 303 and the spiral slide 102, and the cooperation of the second connecting column 303 and the limiting channel 215, the second connecting column 303 drives the focusing cone 301 to move along the limiting channel 215, thereby realizing the adjustment of the spacing between the focusing cone 301 and the DMD digital micromirror device 401.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An illumination device for an imaging system for 3D printing, characterized in that: include: Lighting housing (1); A lighting mechanism (2), the lighting mechanism (2) being installed inside the lighting housing (1), the lighting mechanism (2) comprising a lighting assembly (22), the lighting assembly (22) comprising an LED matrix (221) consisting of a plurality of low-power LED lamps; A light-cone focusing device (3), the light-cone focusing device (3) comprising a light-cone focusing device (301); A micromirror assembly (4), wherein the micromirror assembly (4) is threadedly arranged on the bottom surface of the lighting mechanism (2), and the micromirror assembly (4) comprises a DMD digital micromirror device (401) that can be adjusted in angle.

2. The lighting device of the imaging system for 3D printing according to claim 1, characterized in that: The LED matrix (221) is composed of a plurality of LED lamps connected in series or in parallel as required, and the LED matrix (221) is electrically connected to a common control terminal. The LED lamps control and limit current through a constant current source driver of the LEDs.

3. The lighting device of the imaging system for 3D printing according to claim 1, characterized in that: The lighting housing (1) comprises a rotating cylinder (101), a plurality of spiral slideways (102) are provided on the circumferential side of the rotating cylinder (101), and a transmission gear (103) is fixedly connected to the upper surface of the lighting housing (1).

4. The lighting device of the imaging system for 3D printing according to claim 2, characterized in that: The lighting mechanism (2) further comprises a transmission assembly (21), wherein the transmission assembly (21) comprises a transmission cylinder (211), the upper surface of the transmission cylinder (211) being fixedly connected to a transmission base (212), the lower surface of the transmission base (212) being fixedly connected to a plurality of first connection columns (213), the lower ends of the first connection columns (213) being rotatably connected to a rotating gear (214), the rotating gear (214) being meshed with the transmission gear (103), and a plurality of limiting channels (215) being provided on the circumferential side surface of the transmission cylinder (211), the limiting channels (215) being adapted to the positions of corresponding spiral slideways (102).

5. The lighting device of the imaging system for 3D printing according to claim 3, characterized in that: The lighting assembly (22) further comprises a lighting installation plate (222) coaxially slidably arranged inside the driving cylinder (211), a wiring tube (223) being fixedly mounted on the upper surface of the lighting installation plate (222), and the LED matrix (221) being fixedly mounted on the lower surface of the lighting installation plate (222).

6. The lighting device of the imaging system for 3D printing according to claim 5, characterized in that: A plurality of transmission columns (302) are fixedly connected to the side surface of the focusing cone (301); the lighting installation plate (222) is fixedly connected to the upper surface of the transmission column (302); a side surface of the transmission column (302) is in close contact with the inner wall of the transmission cylinder (211); and a second connection column (303) is fixedly connected to the side surface of the transmission column (302) close to the transmission cylinder (211); The second connecting column (303) is slidably matched with the corresponding spiral slideway (102), the second connecting column (303) is slidably matched with the corresponding limiting channel (215), and one end of the second connecting column (303) is fixedly connected to the limiting disc (304).

7. The lighting device of the imaging system for 3D printing according to claim 5, characterized in that: The micromirror assembly (4) further comprises a micromirror mounting plate (402), the upper surface of the micromirror mounting plate (402) being fixedly connected to a threaded tube (403), the threaded tube (403) being threadably matched with the transmission cylinder (211), and the bottom surface of the rotating cylinder (101) being in close contact with the upper surface of the micromirror mounting plate (402); The micromirror mounting plate (402) is coaxially provided with a mounting cavity (404), and the DMD digital micromirror device (401) is rotatably arranged inside the mounting cavity (404).

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