405nm F-Theta scan lens is a high-precision focusing optical element specifically designed for UV laser scanning systems, widely used in precision laser processing, optical inspection, and additive manufacturing. Featuring a unique F-Theta optical design, it ensures uniform focused spot size across the entire flat scan field while maintaining a linear relationship between focal plane position and scan angle, greatly simplifying scanning control system algorithm design.

Key Advantages

This lens series is deeply optimized for the 405nm wavelength, utilizing high-quality fused silica optical materials with excellent thermal stability and high transmittance. This material is particularly suitable for short-pulse, high-energy-density ultrafast laser applications, effectively suppressing thermal lensing effects and ensuring stable focal position during high-power continuous processing.

The lenses feature 400-410nm dedicated anti-reflective coatings, achieving excellent energy transmission efficiency across the entire operating band. The optical system is optimized for diffraction-limited performance, delivering high-resolution imaging across the entire scan area to meet demanding precision processing requirements.

Product Specifications

The 405nm F-Theta scan lens series offers a wide range of specifications, with focal lengths from 100mm to 750mm and scan fields from 60×60mm to 520×520mm. Input beam diameters support 8-14mm, with M85×1 standard mounting threads for compatibility with mainstream galvo scanning systems.

Select large-format models support ultra-large scan fields up to 600×600mm with entrance pupil diameters reaching 30mm, suitable for large-area processing applications.

Typical Applications

The 405nm UV wavelength offers short wavelength and high photon energy, making it ideal for: high-precision additive manufacturing (3D printing), direct imaging of printed circuit boards (PCB), semiconductor wafer inspection, OLED display repair, high-density optical storage, and biomedical microscopy imaging – applications demanding extreme precision in high-end manufacturing.