WO2016086376A1 - 3d打印机及其采用的镜头模组 - Google Patents

3d打印机及其采用的镜头模组 Download PDF

Info

Publication number
WO2016086376A1
WO2016086376A1 PCT/CN2014/092961 CN2014092961W WO2016086376A1 WO 2016086376 A1 WO2016086376 A1 WO 2016086376A1 CN 2014092961 W CN2014092961 W CN 2014092961W WO 2016086376 A1 WO2016086376 A1 WO 2016086376A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
curved surface
lens module
galvanometer
printer
Prior art date
Application number
PCT/CN2014/092961
Other languages
English (en)
French (fr)
Inventor
李家英
周朝明
孙博
高云峰
Original Assignee
大族激光科技产业集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大族激光科技产业集团股份有限公司 filed Critical 大族激光科技产业集团股份有限公司
Priority to PCT/CN2014/092961 priority Critical patent/WO2016086376A1/zh
Priority to DE112014007225.7T priority patent/DE112014007225B4/de
Priority to CN201480080208.7A priority patent/CN106660271B/zh
Priority to US15/517,944 priority patent/US10197798B2/en
Priority to JP2017514900A priority patent/JP6386662B2/ja
Publication of WO2016086376A1 publication Critical patent/WO2016086376A1/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
    • 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
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • 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
    • 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
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses

Definitions

  • the invention relates to a laser processing system, in particular to a 3D printer and a lens module therefor.
  • 3D printers can be used for a variety of objects, ranging from jewelry parts to large 3D houses.
  • the commonly used 3D printer uses a UV laser to scan the liquid photosensitive resin layer by layer under the control of a computer under the control of a computer.
  • the scanned liquid resin layer is photopolymerized to form a cross-section of the part. This is repeated step by layer until the entire part is manufactured.
  • the 3D printer controls the movement of the mirror and the lens module through a control mechanism, thereby manipulating the movement of the beam focus to achieve point-by-point printing.
  • such a 3D printer has a slow printing speed and low efficiency, making it difficult to print ultra-large parts.
  • a lens module includes a first lens, a second lens, and a third lens arranged in a coaxial manner along a transmission direction of incident light, wherein the first lens, the second lens, and the third lens are meniscus lenses,
  • the first lens includes a first curved surface and a second curved surface
  • the second lens includes a third curved surface and a fourth curved surface
  • the third lens includes a fifth curved surface and a sixth curved surface
  • the first to sixth curved surfaces Arranging sequentially along the transmission direction of the incident light, the curvature radii of the first to sixth curved surfaces are -200 ⁇ 5%, -100 ⁇ 5%, -80 ⁇ 5%, -150 ⁇ 5%, -100, respectively. ⁇ 5%, -70 ⁇ 5%, in millimeters.
  • the center thickness of the first to third lenses is 5 ⁇ 5%, 4 ⁇ 5%, and 3 ⁇ 5%, respectively, in millimeters.
  • the ratio of the refractive index to the Abbe number of the first lens is (1.62/56) ⁇ 5%
  • the ratio of the refractive index of the second lens to the Abbe number is (1.60/ 45) ⁇ 5%
  • the ratio of the refractive index of the third lens to the Abbe number is (1.63/55) ⁇ 5%.
  • the total length of the lens module is 30 mm, and the outer diameter of the lens module is less than or equal to 90 mm.
  • the lens module further includes a fourth lens disposed behind the third lens along a transmission direction of the incident light, and the fourth lens is a planar lens.
  • the fourth lens is a protective glass having a center thickness of 5 ⁇ 5% mm, and the ratio of the refractive index to the Abbe number of the fourth lens is (1.51/64) ⁇ 5%.
  • the lens module has a focal length of 2,200 mm, an entrance pupil diameter of 30 mm, and an operating wavelength of 1064 to 630 nm.
  • a 3D printer comprising: a laser arranged in sequence along a transmission direction of incident light, a beam expander mirror, a first galvanometer, a second galvanometer, a lens module as described above, and a forming station, the laser, the beam expander
  • the second galvanometer and the first galvanometer are disposed in parallel with each other, and the second galvanometer is sequentially disposed in line with the lens module and the molding station.
  • the 3D printer further includes a guide frame disposed adjacent to the molding table and a pulling member slidably disposed on the guide frame, the molding table is provided with a receiving groove, and the pulling member One end is movably disposed in the receiving groove of the forming table.
  • the lens module can obtain an ultra-long focal length, which greatly improves the printing efficiency of the 3D printer, and facilitates printing of very large workpieces.
  • FIG. 1 is a schematic structural view of a 3D printer in an embodiment
  • FIG. 2 is a schematic diagram of a lens module of the 3D printer shown in FIG. 1;
  • FIG. 3 is an aberration diagram of the lens module shown in FIG. 2;
  • Figure 5 is an astigmatism diagram of the lens module shown in Figure 2;
  • FIG. 6 is a distortion diagram of the lens module shown in FIG. 2.
  • FIG. 6 is a distortion diagram of the lens module shown in FIG. 2.
  • the direction of propagation of light in this specification is transmitted from the left to the right of the drawing.
  • the positive and negative of the radius of curvature is based on the intersection of the spherical center position of the curved surface and the main optical axis.
  • the spherical center of the curved surface is left at this point, and the radius of curvature is negative; otherwise, the spherical center of the curved surface is right at the point, then the curvature
  • the radius is positive.
  • the object on the left side of the lens is the object side
  • the image on the right side of the lens is the image side.
  • a positive lens refers to a lens whose center thickness is larger than the edge thickness
  • a negative lens refers to a lens whose center thickness is smaller than the edge thickness.
  • the 3D printer 100 in an embodiment includes a laser 10 , a beam expander 20 , a first galvanometer 30 , a second galvanometer 40 , a lens module 50 , and a molding device arranged in sequence along the transmission direction of incident light.
  • the 3D printer 100 further includes a guide frame 60 disposed adjacent to the molding table 55 and a pulling member 70 slidably disposed on the guide frame 60.
  • the laser 10 and the beam expander 20 are disposed in line with the first galvanometer 30, and the second galvanometer 40 and the first galvanometer 30 are disposed in parallel with each other.
  • the second galvanometer 40 is sequentially disposed in line with the lens module 50 and the molding table 55, and the molding table 55 is located above the lens module 50.
  • the molding table 55 is provided with a housing groove 551 in which a liquid coagulant for molding a workpiece is housed.
  • One end of the pulling member 70 is movably disposed in the receiving groove 551 of the forming table 55.
  • the first galvanometer 30 is an X galvanometer and the second galvanometer 40 is a Y galvanometer.
  • the lens module 50 has a total length of 30 mm and a maximum outer diameter of 90 mm.
  • the lens module 50 includes a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 which are sequentially arranged coaxially in the transmission direction of the incident light.
  • the first lens L1, the second lens L2, and the third lens L3 are all meniscus lenses, and the fourth lens L4 is a planar lens.
  • the first lens L1 includes a first curved surface S1 and a second curved surface S2
  • the second lens L2 includes a third curved surface S3 and a fourth curved surface S4
  • the third lens L3 includes a fifth curved surface S5 and a sixth curved surface S6
  • the fourth lens L4 includes
  • the seventh curved surface S7 and the eighth curved surface S8 each have two curved surfaces as the light incident surface and the light exit surface, and the first curved surface S1 to the eighth curved surface S8 are sequentially arranged along the transmission direction of the incident light.
  • the first curved surface S1, the second curved surface S2, the third curved surface S3, the fourth curved surface S4, the fifth curved surface S5, and the sixth curved surface S6 have the same bending direction, and protrude in the incident light direction (that is, toward the image side).
  • the seventh curved surface S7 and the eighth curved surface S8 are both planar.
  • the fourth lens L4 is a cover glass. It can be understood that the fourth lens L4 can be omitted.
  • the ratio of the refractive index of the first lens L1 to the Abbe number is 1.62/56.
  • the first curved surface S1 of the first lens L1 is convex toward the image side, and has a radius of curvature of -200 mm.
  • the second curved surface S2 is convex toward the image side, the radius of curvature is -100 mm, and the center thickness d1 of the first lens L1 (i.e., the thickness of the lens on the optical axis) is 5 mm.
  • Each of the above parameters of the first lens L1 has a tolerance range of 5%, that is, each parameter is allowed to vary within ⁇ 5%.
  • the ratio of the refractive index of the second lens L2 to the Abbe number is 1.60/45.
  • the third curved surface S3 of the second lens L2 is convex toward the image side, the radius of curvature is -80 mm, and the fourth curved surface S4 is convex toward the image side with a radius of curvature of -150 mm.
  • the center thickness d2 of the second lens L2 is 4 mm.
  • Each of the above parameters of the second lens L2 has a tolerance range of 5%.
  • the ratio of the refractive index of the third lens L3 to the Abbe number is 1.63/55.
  • the fifth curved surface S5 of the third lens L3 is convex toward the image side, the radius of curvature is -100 mm, and the sixth curved surface S6 is convex toward the image side with a radius of curvature of -70 mm.
  • the center thickness d3 of the third lens L3 is 5 mm.
  • Each of the above parameters of the third lens L3 has a tolerance range of 5%.
  • the ratio of the refractive index of the fourth lens L4 to the Abbe number is 1.51/64.
  • the seventh curved surface S7 of the fourth lens L4 and the eighth curved surface S8 have a radius of curvature of ⁇ .
  • the center thickness d4 of the fourth lens L4 is 3 mm.
  • Each of the above parameters of the fourth lens L4 has a tolerance range of 5%.
  • the optical parameters of the lens module 50 are: a focal length of 2200 mm, a pupil diameter of 30 mm, a field of view of 50 degrees, and an operating wavelength of 1064 to 630 nm.
  • the lens module 50 allows the size of the workpiece that can be processed by the 3D printer 100 to be greatly improved.
  • the experimental test results of the lens module 50 are shown in Figures 3-6.
  • FIG. 3 is a geometric aberration diagram of the lens module 50, in which DBJ represents the angle of view, the unit is degree; and IMA represents the imaging diameter of the image plane, in millimeters.
  • a scale length of 400 mm is shown in Figure 3. According to the diffuse spot shown in FIG. 3, it can be seen that the range of the focused spot of the lens module 50 is small, and the ideal resolution is achieved, and the geometric dispersion circle of all the fields of view is not more than 0.04 mm.
  • M.T.F modulation transfer function of the lens module 50.
  • TS represents the field of view in degrees.
  • FIG. 5 is an astigmatism diagram of the lens module 50 in the embodiment shown in FIG. 1.
  • the ordinate +Y in Fig. 5 indicates the size of the field of view, and the abscissa is in millimeters.
  • FIG. 6 is a distortion diagram of the lens module 50 in the embodiment shown in FIG. 1.
  • the ordinate +Y in Fig. 6 indicates the size of the field of view, and the abscissa unit is a percentage.
  • the chromatic aberration of the lens module 50 is within the focal depth range, so the system can use 1064 nm as the working wavelength and 630 nm (visible light) as the optical wavelength of the monitoring system. Of course, 630 nm can also be used as the wavelength of the working system and the monitoring system, and the aberrations are very ideal.
  • a laser beam is emitted from the laser 10, and reaches the first galvanometer 30 via the beam expander 20, and the first galvanometer 30 reflects the laser beam to the second galvanometer 40, second.
  • the galvanometer 40 reflects the laser beam to the lens module 50.
  • the laser beam passes through the lens module 50 to eliminate the chromatic aberration, and then reaches the forming table 55, so that the liquid coagulant in the receiving groove 551 is photo-cured, thereby forming a solidified layer of a predetermined shape on the pulling member 70.
  • the workpiece formed by printing contains a plurality of the cured layers.
  • the lens module 50 can obtain an ultra-long focal length, thereby improving the printing efficiency of the 3D printer 100, so as to facilitate printing of very large workpieces.
  • the lens module 50 also achieves the effect of achromatic, and the lens module 50 uses only four lenses, which greatly simplifies the variety of optical materials.
  • the laser beam can be along the X axis and Y.
  • the axis scans to achieve the deflection of the laser beam, so that the laser beam can move according to a preset trajectory, which also greatly increases the printing speed.
  • the 3D printer 100 can print not only complex shapes but also workpieces with complex structures inside.
  • the laser 10 of the 3D printer 100, the beam expander 20, the first galvanometer 30, the second galvanometer 40, and the lens module 50 can be disposed on the molding table.
  • the direction of transmission of the laser beam is substantially from top to bottom. It will be appreciated that the forming station 55 can also be of other shapes.
  • the guide frame 60 and the pulling member 70 can also be omitted.

Abstract

一种镜头模组（50）以及包括其的3D打印机（100）。所述镜头模组包括沿入射光的传输方向依次共轴排列的第一透镜（L1）、第二透镜（L2）及第三透镜（L3），所述第一透镜、第二透镜及第三透镜均为弯月形透镜，所述第一透镜包括第一曲面（S1）和第二曲面（S2），所述第二透镜包括第三曲面（S3）和第四曲面（S4），所述第三透镜包括第五曲面（S5）和第六曲面（S6），所述第一至第六曲面沿入射光的传输方向依次排布，所述第一曲面至第六曲面的曲率半径依次为-200±5%、-100±5%、-80±5%、-150±5%、-100±5%、-70±5%，单位为毫米。该镜头模组使得3D打印机的打印效率较高，便于实施超大型工件的打印。

Description

3D打印机及其采用的镜头模组
【技术领域】
本发明涉及一种激光加工系统，尤其涉及一种3D打印机及其采用的镜头模组。
【背景技术】
目前3D打印机可以各种物件，小到首饰零件，大到打印3D房屋。常用的3D打印机在计算机控制下，按预定形状零件的轮廓为轨迹，利用紫外激光对液态光敏树脂逐点逐层进行扫描，被扫描的液态树脂层产生光聚合反应固化形成零件的一个截面层，如此重复逐层扫面直到整个零件制造完毕。3D打印机通过控制机构来控制反射镜和镜头模组运动，进而操纵光束焦点的移动以实现逐点打印。然而，这种3D打印机的打印速度慢，效率较低，很难而实现超大型零部件的打印。
【发明内容】
基于此，有必要提供一种打印效率高的3D打印机及其采用的镜头模组。
一种镜头模组，包括沿入射光的传输方向依次共轴排列的第一透镜、第二透镜及第三透镜，所述第一透镜、第二透镜及第三透镜均为弯月形透镜，所述第一透镜包括第一曲面和第二曲面、所述第二透镜包括第三曲面和第四曲面、所述第三透镜包括第五曲面和第六曲面，所述第一至第六曲面沿入射光的传输方向依次排布，所述第一曲面至第六曲面的曲率半径依次为-200±5%、-100±5%、-80±5%、-150±5%、-100±5%、-70±5%，单位为毫米。
在其中一个实施例中，所述第一透镜至第三透镜的中心厚度依次为5±5%、4±5%、3±5%，单位为毫米。
在其中一个实施例中，所述第一透镜的折射率与阿贝数的比例为（1.62/56）±5%、所述第二透镜的折射率与阿贝数的比例均为（1.60/45）±5%，所述第三透镜的折射率与阿贝数的比例为（1.63/55）±5%。
在其中一个实施例中，所述镜头模组的总长度为30毫米，且所述镜头模组的外径小于或等于90毫米。
在其中一个实施例中，所述镜头模组还包括沿入射光的传输方向设置于所述第三透镜后的第四透镜，所述第四透镜为平面透镜。
在其中一个实施例中，所述第四透镜为保护玻璃，其中心厚度为5±5%毫米，所述第四透镜的折射率与阿贝数的比例为（1.51/64）±5%。
在其中一个实施例中，所述镜头模组的焦距为2200毫米，入瞳直径为30毫米，工作波长为1064~630纳米。
一种3D打印机，包括：沿入射光的传输方向依次设置的激光器、扩束镜、第一振镜、第二振镜、如上所述的镜头模组以及成型台，所述激光器、扩束镜与所述第一振镜共线设置，所述第二振镜与所述第一振镜相互平行设置，所述第二振镜与所述镜头模组及所述成型台依次共线设置。
在其中一个实施例中，所述3D打印机还包括邻近所述成型台设置的导向架以及滑动设置于所述导向架上的提拉件，所述成型台开设有收容槽，所述提拉件一端活动地设置于所述成型台的收容槽中。
由于镜头模组的三个透镜的排布及参数设计，可以使镜头模组获得超长焦距，极大地提高了3D打印机的打印效率，以便于实施超大型工件的打印。
【附图说明】
通过附图中所示的本发明的优选实施例的更具体说明，本发明的上述及其它目的、特征和优势将会变得更加清晰。在全部附图中相同的附图标记指示相同的部分，且并未刻意按实际尺寸等比例缩放绘制附图，重点在于示出本发明的主旨。
图1为一实施例中的3D打印机的结构示意图；
图2为图1所示3D打印机的镜头模组示意图；
图3为图2所示镜头模组的像差图；
图4为图2所示镜头模组的调制传递函数M.T.F图；
图5是图2所示镜头模组的像散图；
图6是图2所示镜头模组的畸变图。
【具体实施方式】
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本发明。但是本发明能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似改进，因此本发明不受下面公开的具体实施的限制。
需要说明的是，本说明书中光的传播方向是从附图的左边向右边传播。曲率半径的正负以曲面的球心位置与主光轴的交点为准，曲面的球心在该点以左，则曲率半径为负；反之，曲面的球心在该点以右，则曲率半径为正。另外，位于镜头左边的为物方，位于镜头右边的为像方。正透镜是指透镜的中心厚度大于比边缘厚度的透镜，负透镜是指透镜的中心厚度小于边缘厚的透镜。
请参阅图1，一实施例中的3D打印机100包括：沿入射光的传输方向依次设置的激光器10、扩束镜20、第一振镜30、第二振镜40、镜头模组50以及成型台55。3D打印机100还包括邻近成型台55设置的导向架60以及滑动设置于导向架60上的提拉件70。激光器10、扩束镜20与第一振镜30共线设置，第二振镜40与第一振镜30相互平行设置。第二振镜40与镜头模组50及成型台55依次共线设置，且成型台55位于镜头模组50的上方。在本实施方式中，成型台55开设有收容槽551，其内收容有用于成型工件的液体凝固剂。提拉件70一端活动地设置于成型台55的收容槽551中。第一振镜30为X振镜、第二振镜40为Y振镜。
请参阅图2，镜头模组50的总长度为30毫米，最大外径为90毫米。镜头模组50包括沿入射光的传输方向依次共轴排列的第一透镜L1、第二透镜L2、第三透镜L3及第四透镜L4。其中，第一透镜L1、第二透镜L2、第三透镜L3均为弯月型透镜，第四透镜L4为平面透镜。第一透镜L1包括第一曲面S1和第二曲面S2，第二透镜L2包括第三曲面S3和第四曲面S4，第三透镜L3包括第五曲面S5和第六曲面S6，第四透镜L4包括第七曲面S7和第八曲面S8，每个透镜的两个曲面分别作为光入射面和光出射面，第一曲面S1至第八曲面S8沿入射光的传输方向依次排布。第一曲面S1、第二曲面S2、第三曲面S3、第四曲面S4、第五曲面S5及第六曲面S6的弯曲方向相同，沿入射光方向(即朝像方)凸出。第七曲面S7与第八曲面S8均为平面。在本实施方式中，第四透镜L4为保护玻璃。可以理解，第四透镜L4可以省略。
第一透镜L1的折射率与阿贝数的比例为1.62/56。第一透镜L1的第一曲面S1向像方凸出，曲率半径为-200毫米。第二曲面S2向像方凸出，曲率半径为-100毫米，第一透镜L1的中心厚度d1（即透镜在光轴上的厚度）为5毫米。第一透镜L1的上述各参数均存在5%的公差范围，即允许各参数在±5%范围内变化。
第二透镜L2的折射率与阿贝数的比例为1.60/45。第二透镜L2的第三曲面S3向像方凸出，曲率半径为-80毫米，第四曲面S4向像方凸出，曲率半径为-150毫米。第二透镜L2的中心厚度d2为4毫米。第二透镜L2的上述各参数均存在5%的公差范围。
第三透镜L3的折射率与阿贝数的比例为1.63/55。第三透镜L3的第五曲面S5向像方凸出，曲率半径为-100毫米，第六曲面S6向像方凸出，曲率半径为-70毫米。第三透镜L3的中心厚度d3为5毫米。第三透镜L3的上述各参数均存在5%的公差范围。
第四透镜L4的折射率与阿贝数的比例为1.51/64。第四透镜L4的第七曲面S7与第八曲面S8的曲率半径均为∞。第四透镜L4的中心厚度d4为3毫米。第四透镜L4的上述各参数均存在5%的公差范围。
通过上述设计后，镜头模组50的光学参数为：焦距为2200毫米，入瞳直径为30毫米，视场为50度，工作波长为1064~630纳米。镜头模组50使得3D打印机100所能加工的工件尺寸得到了极大的得到提高。当工件为圆柱体时，工件的体积V=Ф*L (L为加工零件的长度)，其中直径Ф的最大值可达2米；当工件的截面为方形时，工件的体积V=S*L，其中面积S 的最大值可达1.4*1.4平方米。镜头模组50的实验测试效果如图3~6所示。
图3为镜头模组50的几何像差图，其中DBJ表示视角，单位为度；IMA表示像面的成像直径，单位为毫米。图3中示出了400毫米的标尺长度。根据图3所示的弥散斑可以看出镜头模组50的聚焦光斑的弥散范围较小，达到了理想的分辨率，全部视场的几何弥散圆都不大于0.04毫米。
图4为镜头模组50的调制传递函数(modulation transfer function，M.T.F)图，其中横坐标表示分辨率，单位为线对/毫米；TS表示视场，单位为度。当M.T.F为0.3时，还有7线对，相当于其分辨率约为0.07毫米，已达到了理想值。
图5为图1所示实施例中的镜头模组50的像散图。图5中的纵坐标+Y表示视场的大小，横坐标单位为毫米。图6为图1所示实施例中的镜头模组50的畸变图。图6中的纵坐标+Y表示视场的大小，横坐标单位为百分比。从图5~6中可看出，镜头模组50的色差已在焦深范围之内，因此系统可以用1064纳米为工作波长，630纳米(可见光)为监控系统的光学波长。当然，也可以用630纳米作为工作系统和监控系统的波长，其像差都非常理想。
请再次参阅图1，3D打印机100工作时，激光束从激光器10中发出，经由扩束镜20抵达第一振镜30，第一振镜30将激光束反射至第二振镜40，第二振镜40将激光束反射至镜头模组50。激光束经由镜头模组50消除色差后抵达成型台55，使收容槽551内的液体凝固剂感光固化，从而于提拉件70上形成预设形状的固化层。在此过程中，提拉件70持续向上提拉所述固化层，激光束使得液体凝固剂持续不断地于所述固化层上形成另一层固化层，从而最终完成工件的打印。打印形成的工件包含多个所述固化层。
由于镜头模组50的第一至第四透镜的排布及参数设计，可以使镜头模组50获得超长焦距，从而提高了3D打印机100的打印效率，以便于实施超大型工件的打印。同时，镜头模组50也实现了消色差的效果，且镜头模组50仅采用了四块透镜，极大地简化了光学材料的品种。
另外，由于3D打印机100采用了第一振镜30与第二振镜40使得激光束可沿X轴及Y 轴扫描以实现激光束的偏转，因而激光束可以按预设的轨迹运动，也极大地提高了打印速度。3D打印机100不但可以打印出各种复杂的外形，也可以打印内部具有复杂结构的工件。
可以理解，当成型台55中的液体凝固剂替换成固体时，3D打印机100的激光器10、扩束镜20、第一振镜30、第二振镜40、镜头模组50可以设置于成型台55的上方，使得激光束的传输方向为大致从上向下。可以理解，成型台55也可以为其他形状的结构。当3D打印机100为其他类型打印机时，导向架60以及提拉件70也可以省略。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (9)

  1. 一种镜头模组，其特征在于：包括沿入射光的传输方向依次共轴排列的第一透镜、第二透镜及第三透镜，所述第一透镜、第二透镜及第三透镜均为弯月形透镜，所述第一透镜包括第一曲面和第二曲面、所述第二透镜包括第三曲面和第四曲面、所述第三透镜包括第五曲面和第六曲面，所述第一至第六曲面沿入射光的传输方向依次排布，所述第一曲面至第六曲面的曲率半径依次为-200±5%、-100±5%、-80±5%、-150±5%、-100±5%、-70±5%，单位为毫米。
  2. 根据权利要求1所述的镜头模组，其特征在于，所述第一透镜至第三透镜的中心厚度依次为5±5%、4±5%、3±5%，单位为毫米。
  3. 根据权利要求1所述的镜头模组，其特征在于，所述第一透镜的折射率与阿贝数的比例为（1.62/56）±5%、所述第二透镜的折射率与阿贝数的比例均为（1.60/45）±5%，所述第三透镜的折射率与阿贝数的比例为（1.63/55）±5%。
  4. 根据权利要求1所述的镜头模组，其特征在于，所述镜头模组的总长度为30毫米，且所述镜头模组的外径小于或等于90毫米。
  5. 根据权利要求1所述的镜头模组，其特征在于，所述镜头模组还包括沿入射光的传输方向设置于所述第三透镜后的第四透镜，所述第四透镜为平面透镜。
  6. 根据权利要求5所述的镜头模组，其特征在于，所述第四透镜为保护玻璃，其中心厚度为5±5%毫米，所述第四透镜的折射率与阿贝数的比例为（1.51/64）±5%。
  7. 根据权利要求1所述的镜头模组，其特征在于，所述镜头模组的焦距为2200毫米，入瞳直径为30毫米，工作波长为1064~630纳米。
  8. 一种3D打印机，其特征在于，包括：沿入射光的传输方向依次设置的激光器、扩束镜、第一振镜、第二振镜、如权利要求1所述的镜头模组以及成型台，所述激光器、扩束镜与所述第一振镜共线设置，所述第二振镜与所述第一振镜相互平行设置，所述第二振镜与所述镜头模组及所述成型台依次共线设置。
  9. 根据权利要求8所述的3D打印机，其特征在于，所述3D打印机还包括邻近所述成型台设置的导向架以及滑动设置于所述导向架上的提拉件，所述成型台开设有收容槽，所述提拉件一端活动地设置于所述成型台的收容槽中。
PCT/CN2014/092961 2014-12-03 2014-12-03 3d打印机及其采用的镜头模组 WO2016086376A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/CN2014/092961 WO2016086376A1 (zh) 2014-12-03 2014-12-03 3d打印机及其采用的镜头模组
DE112014007225.7T DE112014007225B4 (de) 2014-12-03 2014-12-03 3D-Drucker und durch den Drucker verwendetes Linsenmodul
CN201480080208.7A CN106660271B (zh) 2014-12-03 2014-12-03 3d打印机及其采用的镜头模组
US15/517,944 US10197798B2 (en) 2014-12-03 2014-12-03 3D printer and lens module used by same
JP2017514900A JP6386662B2 (ja) 2014-12-03 2014-12-03 ３ｄプリンタおよびこれに用いられる鏡筒モジュール

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/092961 WO2016086376A1 (zh) 2014-12-03 2014-12-03 3d打印机及其采用的镜头模组

Publications (1)

Publication Number Publication Date
WO2016086376A1 true WO2016086376A1 (zh) 2016-06-09

Family

ID=56090823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/092961 WO2016086376A1 (zh) 2014-12-03 2014-12-03 3d打印机及其采用的镜头模组

Country Status (5)

Country Link
US (1) US10197798B2 (zh)
JP (1) JP6386662B2 (zh)
CN (1) CN106660271B (zh)
DE (1) DE112014007225B4 (zh)
WO (1) WO2016086376A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108169883A (zh) * 2017-12-27 2018-06-15 大族激光科技产业集团股份有限公司 一种用于大范围清洗的激光镜头及激光系统
JP2019514722A (ja) * 2016-12-23 2019-06-06 レイ カンパニー，リミテッド Ｌｃｄ方式３ｄプリンター

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040102531A (ko) * 2003-05-28 2004-12-08 학교법인 포항공과대학교 마이크로 광 조형 방법 및 장치
US20050057736A1 (en) * 2003-09-11 2005-03-17 Fuji Photo Film Co., Ltd. Method and apparatus for multiphoton-absorption exposure wherein exposure condition is changed with depth of convergence position
CN201235608Y (zh) * 2008-07-10 2009-05-13 华南理工大学 医用植入体蜡模的选区激光熔化快速成型装置
US20110310493A1 (en) * 2010-06-16 2011-12-22 Hyong Bae Park Photographic lens optical system
CN103341625A (zh) * 2013-07-10 2013-10-09 湖南航天工业总公司 一种金属零件的3d打印制造装置及方法
CN203622599U (zh) * 2013-11-28 2014-06-04 西安中科麦特电子技术设备有限公司 以陶瓷为原料的3d打印机
CN104029394A (zh) * 2014-06-24 2014-09-10 山东省科学院海洋仪器仪表研究所 一种提高激光扫描成像光固化快速成型效率的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070103639A1 (en) * 2003-07-11 2007-05-10 Koninklijke Philips Electronics N.V. Method of manufacturing a mould for producing an optical surface, a method of producing a contact lens and a device for use with these methods
CN101324697A (zh) * 2008-04-28 2008-12-17 深圳市大族激光科技股份有限公司 光学镜头
CN102262283B (zh) * 2010-05-31 2013-05-15 深圳市大族激光科技股份有限公司 一种紫外激光聚焦镜头、激光打标机及激光刻划机
CN103984078B (zh) * 2014-05-30 2016-07-27 大族激光科技产业集团股份有限公司 用于激光光斑与指示光光斑重合的f-theta光学镜头

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040102531A (ko) * 2003-05-28 2004-12-08 학교법인 포항공과대학교 마이크로 광 조형 방법 및 장치
US20050057736A1 (en) * 2003-09-11 2005-03-17 Fuji Photo Film Co., Ltd. Method and apparatus for multiphoton-absorption exposure wherein exposure condition is changed with depth of convergence position
CN201235608Y (zh) * 2008-07-10 2009-05-13 华南理工大学 医用植入体蜡模的选区激光熔化快速成型装置
US20110310493A1 (en) * 2010-06-16 2011-12-22 Hyong Bae Park Photographic lens optical system
CN103341625A (zh) * 2013-07-10 2013-10-09 湖南航天工业总公司 一种金属零件的3d打印制造装置及方法
CN203622599U (zh) * 2013-11-28 2014-06-04 西安中科麦特电子技术设备有限公司 以陶瓷为原料的3d打印机
CN104029394A (zh) * 2014-06-24 2014-09-10 山东省科学院海洋仪器仪表研究所 一种提高激光扫描成像光固化快速成型效率的方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019514722A (ja) * 2016-12-23 2019-06-06 レイ カンパニー，リミテッド Ｌｃｄ方式３ｄプリンター
CN108169883A (zh) * 2017-12-27 2018-06-15 大族激光科技产业集团股份有限公司 一种用于大范围清洗的激光镜头及激光系统

Also Published As

Publication number Publication date
DE112014007225T5 (de) 2017-08-24
DE112014007225B4 (de) 2022-02-24
US10197798B2 (en) 2019-02-05
JP2017533455A (ja) 2017-11-09
CN106660271B (zh) 2019-04-12
US20170307877A1 (en) 2017-10-26
JP6386662B2 (ja) 2018-09-05
CN106660271A (zh) 2017-05-10

Similar Documents

Publication Publication Date Title
CN104781716B (zh) 一种超紫外激光打标Fθ镜头及激光加工设备
CN108873289B (zh) 显微物镜光学系统及光学设备
WO2014012416A1 (zh) 一种红外激光变倍扩束系统及激光加工设备
KR20190057200A (ko) 접안 렌즈 및 헤드웨어 표시 장치
WO2016086376A1 (zh) 3d打印机及其采用的镜头模组
CN114488479A (zh) 一种大视场高分辨率前置光阑的工业镜头
CN104769474B (zh) 一种远红外激光加工用Fθ镜头及激光加工设备
WO2014067103A1 (zh) 一种近红外激光聚焦镜头及激光印刷设备
CN102902058B (zh) 连续变倍目镜
WO2016086377A1 (zh) 3d打印机、打印方法及镜头模组
WO2016041161A1 (zh) 远心光学镜头
WO2014012417A1 (zh) 一种绿光激光变倍扩束系统及激光加工设备
WO2014012415A1 (zh) 一种紫外激光变倍扩束系统及激光加工设备
CN101776790B (zh) 激光内雕聚焦光学镜头及其使用方法
CN206115032U (zh) 一种图像显示装置及头戴式显示设备
WO2016029414A1 (zh) 光学镜头
WO2016082172A1 (zh) 激光刻线用光学镜头
CN207301460U (zh) 一种实现激光扫描与同轴监控一体的高倍显微物镜光路系统
CN109445062A (zh) 三维动态调焦透镜组、光学镜头、激光加工设备及方法
CN218675673U (zh) 一种高轴向分辨率的线性色散物镜装置
WO2016082171A1 (zh) F-θ型光刻镜头
CN116381915A (zh) 一种远心平场镜头
CN110794553A (zh) 一种用于光谱成像的中继镜头
Kurmer et al. Optical Analysis of Lenslet Arrays
Kong et al. Eyewear-style three-dimensional endoscope derived from microstructured polymer fiber with the function of image transmission

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14907386

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017514900

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 15517944

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 112014007225

Country of ref document: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC

122 Ep: pct application non-entry in european phase

Ref document number: 14907386

Country of ref document: EP

Kind code of ref document: A1