LONGER Research: LONGER Nano Pro 12W Field Lens Function Introduction

LONGER Research: LONGER Nano Pro 12W Field Lens Function Introduction

The field lens is a specially designed optical component widely used in laser engraving equipment to optimize laser beam performance. Its primary function is to ensure that the focal point remains on the same plane while reducing the spot size, thus enhancing engraving precision and quality. The field lens design in the LONGER Nano Pro 12W helps maintain a consistent laser focus across the engraving area, which is essential for achieving uniform, detailed engraving results, especially for high-precision and intricate projects.

At the core of the field lens function is its ability to focus the laser onto an extremely small point, a feature achieved through precise optical design. The spot size directly affects the level of detail in engraving, as a smaller spot size means more laser energy can be concentrated in a smaller area, producing finer engraving effects.

In laser systems, the spot size is determined by both the focal length and wavelength of the laser. According to optical principles, the diameter d of the focal spot can be roughly calculated using the following formula:  

The field lens is a specially designed optical component widely used in laser engraving equipment to optimize laser beam performance. Its primary function is to ensure that the focal point remains on the same plane while reducing the spot size, thus enhancing engraving precision and quality. The field lens design in the LONGER Nano Pro 12W  helps maintain a consistent laser focus across the engraving area, which is essential for achieving uniform, detailed engraving results, especially for high-precision and intricate projects.

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