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Two-photon polymerization 3D (three dimensional) printer and printing method

A two-photon polymerization and 3D printer technology, applied in the field of 3D printing, can solve problems such as the inability to print submicron structures and the inability of 3D printing technology to meet processing requirements.

Active Publication Date: 2016-07-13
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

However, most of the current 3D printers are unable to print sub-micron structures. For common SLA and FDM technologies, the size of the printed workpiece is in the range above millimeters
For structures smaller than 1mm, conventional 3D printing technology cannot meet the processing requirements

Method used

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  • Two-photon polymerization 3D (three dimensional) printer and printing method
  • Two-photon polymerization 3D (three dimensional) printer and printing method

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] refer to figure 1 , in some embodiments, the two-photon polymerization 3D printer includes: femtosecond laser pulse system 100, control computer 200, CCD monitoring system 300, 3D precision slide table (submicron precision motion platform) 600, the motion control of 3D precision slide table System 500.

[0031] The femtosecond laser pulse system 100 has: a femtosecond laser 110 , an optical path switch 120 , an attenuator 130 , a beam expander 140 , a rotating mirror (mirror) 150 , and an objective lens 170 . The femtosecond laser 110 is used to generate 600-1000nm two-photon laser light. The laser passes through the optical path switch 120 , the attenuation sheet 130 , the beam expander 140 , the rotating mirror 150 and the objective lens 170 to focus the laser to a point to cross-link the photocurable resin. The optical path switch 120 and t...

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Abstract

The invention discloses a two-photon polymerization 3D (three dimensional) printer and a printing method.The two-photon polymerization 3D printer comprises a femtosecond laser pulse system, a submicron-precision motion platform, a CCD (charge coupled device) monitoring system and a control computer.The femtosecond laser pulse system comprises a femtosecond laser, an objective lens, an optical path switch and an attenuation plate, wherein the femtosecond laser is used for generating 600-1000nm two-photon laser, and the objective lens is used for converging and outputting the two-photon laser.The CCD monitoring system is connected with an optical path of the femtosecond laser pulse system through a dichroic mirror, and the control computer is respectively connected with the femtosecond laser, the optical path switch, a motion control system and the CCD monitoring system.The printing method includes: adjusting to determine a proper printing initial position through the CCD monitoring system; generating control codes of to-be-printed model slices; controlling the motion platform and the optical path switch through the control computer to realize two-photon polymerization printing; printing layer by layer; dissolving un-crosslinked photosensitive resin.By the two-photon polymerization 3D printer and the printing method, micro-nano printing precision can be realized.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a two-photon polymerization 3D printer and a printing method. Background technique [0002] 3D printing is a new processing and manufacturing technology. Compared with the traditional subtractive manufacturing mode, the 3D printing technology based on additive manufacturing has revolutionary significance. However, most of the current 3D printers are unable to print sub-micron structures. For the common SLA and FDM technologies, the size of the printed workpiece is in the range above millimeters. For structures smaller than 1mm, conventional 3D printing technology cannot meet the processing requirements. Contents of the invention [0003] The purpose of the present invention is to provide a two-photon polymerization 3D printer and printing method to meet the needs of micro-nano scale printing. [0004] Technical scheme of the present invention is as follows: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00B33Y10/00B33Y50/02
CPCB33Y10/00B33Y50/02
Inventor 李勃朱朋飞许国军王进周济
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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