The Collimator 400 - 700 nm is an advanced optical component designed to enhance light collection efficiency with its high numerical aperture (NA) of 0.60. This feature ensures that the lens can capture and focus a significant amount of light, making it an ideal choice for various optical applications. The lens is equipped with a broadband visible anti-reflection (AR) coating, which significantly improves light transmission across the 400-700 nm range. This coating minimizes reflection losses, ensuring that the maximum amount of light passes through the lens.

One of the standout features of this lens is its aspheric design, which effectively reduces or nearly eliminates spherical aberration. This design choice negates the need for multiple lens elements, simplifying the optical system while maintaining high performance. The lens boasts a short effective focal length (EFL) of 4 mm, allowing for versatile working distances. This flexibility makes the lens suitable for a wide range of optical setups, particularly in laser applications.

While the Collimator 400 - 700 nm is versatile, it is particularly noted for its use in engraving applications, especially at the 450 nm wavelength. It is included with the PLH3D-6W-Series laser engravers, providing users with a reliable and efficient focusing solution. The lens is designed for easy maintenance; its surfaces can be cleaned with Isopropyl Alcohol (IPA) and an optical wipe if they become dirty during use. However, in environments with high levels of dust, smoke, or oil, it is advisable to have a spare lens on hand, as replacement may occasionally be necessary. Please note that the PLH3D-Series Focus Adjuster accessory is not compatible with this lens.