Green Laser 3D Printing Achieves 15μm Spot Diameter—Precision Enhanced Again as ADDIREEN Secures Patent

On June 4, 2025, Panda3dp.com reported that ADDIREEN Additive has been granted a new patent related to green laser 3D printing, achieving a minimum laser spot diameter of just 15μm—ushering in a new level of printing precision.

Shenzhen ADDIREEN Technology Co., Ltd. was recently awarded a national invention patent titled “A Laser Optical System and the 3D Printing Equipment Containing It” (Patent No. ZL 2024 1 0741251.9). In response to the longstanding challenges of large spot diameters and limited resolution in laser 3D printing, ADDIREEN developed a high-power single-mode green laser and additive manufacturing system specifically designed for precision fabrication. The system achieves a minimum focused spot diameter of 15μm, representing a seamless integration of high output power and high resolution. This significantly elevates the upper performance limits of metal 3D printing in intricate structural applications, particularly in scenarios demanding exceptional form accuracy and material compatibility.

At present, 3D printing systems face a technical bottleneck when trying to reconcile high resolution with high power output. Addressing this pain point in the industry, ADDIREEN Additive’s team has introduced a high-power optical laser system capable of forming ultra-small focal spots, along with compatible 3D printing equipment. The system employs a single-mode green laser with a wavelength range of 500–550 nm, capable of producing spot diameters between 5–20μm—breaking through the conventional limitation where laser spot diameters typically exceed 30μm. Additionally, the beam quality (M²) is maintained between 1.0 and 1.4, ensuring excellent energy concentration and stable processing performance.

Proven through practical application, the 3D printing equipment built on this laser system delivers superior focus and heightened resolution in metal processing—providing robust support for the precision manufacturing of complex geometries. Moreover, the green wavelength spectrum enhances laser absorption in materials such as copper, tungsten, tantalum, gold, and silver—all of which are typically highly reflective, difficult to melt, or precious metals. This dramatically improves print stability and broadens the material applicability range, effectively resolving compatibility challenges inherent in traditional laser 3D printing.

The founding team at ADDIREEN Additive has deep expertise in laser systems and metal 3D printing equipment, with a long-standing focus on scaling and industrializing green laser additive manufacturing. Through continuous technological iteration and system-level optimization, the company has made significant advances in material versatility, printing efficiency, cost control, and post-processing. Looking ahead, ADDIREEN Additive is committed to building upon its core competencies with a global perspective in smart manufacturing, steadily progressing toward its vision of becoming a world-leading provider of laser additive manufacturing solutions.