AND-40S-40 40 x 40 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

OptoSigma's AND-40S-40 is a high-quality Neutral Density Filter, designed to minimize the intensity of light passing through the optical path without altering its color composition. This filter is specifically intended for use in the visible light spectrum, covering wavelengths from 400 to 700nm.

The filter is rectangular in shape, with dimensions of 40 x 40 mm, making it suitable for a wide range of optical applications. It boasts a thickness of 2mm, providing robustness and durability without compromising its optical performance. The filter is unmounted, offering users the flexibility to integrate it into their existing optical systems or mounts.

The filter's coating is another notable feature. Both the front and back surfaces are coated with the OptoSigma AND-40 coating, which enhances its light absorption capabilities and ensures consistent performance across different orientations. This coating also helps to protect the filter from environmental factors, further extending its lifespan.

The material ID for this filter is UVFS MAL-1965, providing a unique identifier for sourcing and replacement purposes. The filter is currently in stock and available for immediate purchase through the provided weblink.