AND-15C-40 15 mm Dia. Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

The AND-15C-40 is a Neutral Density Filter, specifically designed for use in the visible light spectrum, with a wavelength of 550nm. This filter is manufactured by OptoSigma, a renowned vendor in the optical industry, and is available for purchase through their website. The catalog number for this product is AND-15C-40.

This filter is circular in shape, with a diameter of 15mm and a thickness of 2mm, making it suitable for a wide range of optical applications. The filter is made from UVFS MAL-1965 optical glass, a material known for its high-quality light transmission properties.

The filter features absorptive neutral density coatings on both the front and back surfaces, denoted as 'opt and-40'. This coating is designed to reduce the intensity of light passing through the filter without altering its color balance. This is particularly useful in situations where excessive light might otherwise overwhelm the optical system, such as in high-powered laser applications or when capturing images in very bright environments.

The filter's shape is described as a Thin Lens, indicating that it has been designed to minimize optical aberrations and distortions. This is particularly important in precision optical applications where even minor distortions can significantly impact the quality of the final image.