AND-25C-001 25 mm Dia. Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

The AND-25C-001 is a 25 mm diameter Optical Glass Neutral Density Filter, specifically designed for use in the visible light spectrum, between 400-700nm. This filter is an essential tool for managing light intensity in various optical systems, including cameras, microscopes, and telescopes, without altering the color balance.

This filter is produced by OptoSigma, a leading vendor in the optical industry, known for its high-quality, precision-engineered optical components. The filter is of the Absorptive Neutral Density type, meaning it reduces light intensity by absorbing a portion of the light that passes through it, rather than reflecting or scattering it.

The filter has a base shape of a circle, a standard geometry in optical systems due to its symmetry and ease of alignment. It has a thickness of 2mm, which is considered thin in the context of optical components, reducing the likelihood of vignetting and other optical aberrations.

The filter's coating is Opt AND-001 on both the front and back surfaces. This coating enhances the filter's performance by reducing surface reflections and improving transmission, thereby increasing the overall efficiency of the optical system.

The filter's shape is classified as a Thin Lens, indicating that it is designed to minimize optical aberrations and distortions, ensuring the highest quality images possible. The filter is unmounted, providing users with the flexibility to integrate it into their existing optical systems in a way that best suits their specific needs.