Laser marking machines have traditionally faced limitations regarding their working area and depth due to constraints in laser focus. However, the introduction of 2.5D and 3D dynamic laser focusing technologies has addressed many of these issues, opening up new possibilities for laser marking applications.

2.5D Laser Focusing Technology

The 2.5D laser focusing galvanometer, also known as the behind-laser focusing system, features the F-Theta lens positioned beneath the X and Y axes inside the galvanometer head. Additionally, a Z-axis lens adjusts the focusing distance of the center point on the working surface. As the engraving depth changes, the Z-axis mirror makes slight adjustments to ensure the laser remains focused throughout the depth engraving process. In contrast, a standard 2D galvanometer head loses focus during depth engraving.

Typically, the aperture of a 2.5D galvanometer head is less than 20mm, and the laser working area is confined to less than 160mm by 160mm. This technology is particularly useful for applications requiring metal depth engraving, small hole drilling, and other precise tasks.

An example of this technology in action is the Betop BT-F3D60, a 60-watt laser engraver equipped with 2.5D laser controlling software. This system, along with its external mechanical components, is designed for deep engraving and cutting, making it ideal for jewelry processing.

3D Laser Focusing Technology

The 3D laser focusing galvanometer, also referred to as the in-advance dynamic laser focusing system, places the focusing lens on a Z-axis before the X and Y axes inside the galvanometer head. By dynamically coordinating the Z-axis with the focusing lens and the X and Y axes, the laser focus adjusts in real-time to different positions and heights during the marking process.

Unlike the traditional 2D galvanometer head, the 3D system is not limited by the F-Theta lens, providing more options for beam aperture and working areas. This technology is particularly effective for marking on curved surfaces and large area markings, significantly enhancing versatility and precision.

The advancements in 2.5D and 3D dynamic laser focusing technologies have revolutionized the capabilities of laser marking machines, allowing for more intricate and precise applications across various industries. These technologies represent a significant leap forward, offering enhanced performance and expanding the scope of what can be achieved with laser marking.

Betop Laser is a professional supplier of laser machines, offering a wide range of solutions to customers worldwide. If you need any advice or assistance with your laser marking needs, please contact us. Our team of experts is ready to help you find the perfect solution for your application.