3D Printer Lens Module for Ultra-Large Workpiece Printing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional 3D printers have slower printing speeds and lower efficiency, making it difficult to produce ultra-large scale workpieces.
Innovation Solution
A 3D printer system incorporating a lens module with specifically arranged meniscus lenses and a flat lens, optimized for long focal length and high refractive index, which improves printing efficiency by allowing for the production of larger workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional 3D printer with standard lens is used, then printing can be performed, but printing speed is slow and efficiency is low
Solution Approach 1:
The patent changes the optical parameters by using a lens module with specifically designed meniscus lenses having optimized radii of curvature (−200±5%, −100±5%, −80±5%, −150±5%, −100±5%, and −70±5%) and refractive indices. This parameter optimization enables the lens to focus laser beams more efficiently, increasing printing speed and productivity while reducing printing time
2Manufacturing precision
If conventional lens is used, then printing can be performed, but geometrical aberration is high and resolution is low
Solution Approach 1:
The patent employs a composite lens system consisting of multiple meniscus lenses with different refractive indices and Abbe numbers. The first meniscus lens has refractive index 1.62 and Abbe number 56, the second has refractive index 1.60 and Abbe number 45, and the third has refractive index 1.63 and Abbe number 55. This composite configuration compensates for geometrical aberrations and improves resolution
3Volume of moving object
If standard optical system is used, then printing can be performed, but workpiece size is limited
Solution Approach 1:
The patent extends the optical path length by using a lens module with extra-long focal length (2200 millimeters). This dimensional extension in the optical path enables the printing of ultra-large scale workpieces while maintaining focus precision, effectively increasing the printable volume
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves significant improvements in printing efficiency, enabling the creation of ultra-large scale workpieces with reduced geometrical aberration and increased resolution, facilitating the production of complex profiles and internal structures.
Implementation Method 1
a lens module mentioned above; wherein the laser, the beam expander, and the first vibrating mirror are coaxially arranged, the second vibrating mirror, the lens module, and the molding platform are successively and coaxially arranged
Implementation Method 2
The scanned liquid resin layer generates a photo-polymerization to solidify and form one cross-sectional layer of an element
Data Source
AI summary
A lens module (50) and a 3D printer (100) comprising same. The lens module comprises a first lens (L1), a second lens (L2) and a third lens (L3) sequentially and coaxially arranged in the transmission direction of incident light. The first lens, the second lens and the third lens are all meniscus lenses. The first lens comprises a first curved surface (S1) and a second curved surface (S2). The second lens comprises a third curved surface (S3) and a fourth curved surface (S4). The third lens comprises a fifth curved surface (S5) and a sixth curved surface (S6). The first to the sixth curved surfaces are sequentially arranged in the transmission direction of the incident light, and the curvature radii of the first to the sixth curved surfaces are sequentially −200±5%, −100±5%, −80±5%, −150±5%, −100±5% and −70±5% in a unit of millimeter. By means of the lens module, the printing efficiency of the 3D printer is high and it is convenient to carry out printing of ultra-large workpieces.