13-111 25 mm Dia. Hoya ND-006 Absorptive Neutral Density Filter; OD 4 425-675nm

The 13-111 25 mm Dia. Hoya ND-006 Absorptive Neutral Density Filter is a high-quality optical component designed for applications that require precise light control. Sourced from the renowned optical vendor Edmund Optics, this filter is part of their extensive catalog and is available for purchase directly from their website.

This filter is specifically designed for the visible spectrum, with a central wavelength of 588nm. It features a circular geometry with a diameter of 25mm and a thickness of 2.85mm, making it compatible with a wide range of optical systems. The filter's Neutral Density (ND) design ensures consistent attenuation of light across the entire spectrum, providing a uniform optical density of 4.

The 13-111 filter is coated with EDM 13-094 on both the front and back surfaces. This coating enhances the filter's performance by reducing reflections and increasing transmission, thereby improving the overall efficiency of the optical system. The filter's shape is classified as a Thin Lens, indicating that it has been designed to minimize optical aberrations and distortions.