NE530A In Stock

The NE530A by ThorLabs is an exceptional absorptive neutral density (ND) filter that offers an optical density (OD) of 3.0. This high-quality filter boasts a Ø1/2" diameter and can be easily mounted in SM05-threaded (0.535"-40) lens tubes. The filter's housing is expertly engraved with the part number and optical density, ensuring that the user can easily identify it at a glance. Designed to be highly versatile, the NE530A is directly compatible with a broad range of rigid construction optomechanical parts, including cage systems and lens tube accessories. This compatibility makes the NE530A an ideal choice for engineers and researchers who demand flexibility and convenience from their equipment.

The NE530A is constructed from specially chosen Schott glass with a spectrally flat absorption coefficient range of 400 - 650 nm within the visible light spectrum. To ensure accurate and repeatable results when doing quantitative measurements, it is necessary to perform calibration of the optical filter in the setup because of potential variations between different lots of optical glass. This ensures accurate and reliable results every time. Moreover, the NE530A features a user-friendly design that allows for easy removal of the mounted filter from its housing. The retaining ring that secures the filter to the mount can be easily unscrewed using a compatible spanner wrench, providing the user with the flexibility to customize a setup as desired.