14NDF-30-2 25.4 mm Dia. Unmounted Absorptive Neutral Density Filter; OD 0.5 400-700nm

This is the 14NDF-30-2, a 25.4 mm diameter unmounted absorptive neutral density filter, specifically designed for use in the 400-700nm wavelength range. The filter is sourced from Standa, a reputable vendor known for their high-quality optical elements.

The filter is of the Neutral Density type, which means it reduces the intensity of incident light without altering its color composition. This is achieved through a front and back coating of 'sta 14ndf-0.5', which provides an Optical Density (OD) of 0.5. This level of OD reduces the light intensity by a factor of 10^0.5, or approximately 31.62%.

The filter is circular in base shape and has a thickness of 3mm. It is made from UVFS Mal-1965 material, a common choice for neutral density filters due to its excellent optical properties. The filter's geometry, including its diameter and thickness, make it suitable for use in a variety of optical systems.

The filter's coating and shape are designed to mimic a thin lens, reducing potential aberrations and improving overall optical performance. The filter is unmounted, providing users with the flexibility to integrate it into their existing optical systems or mount it using their preferred method.

For more information about this filter, including its catalog number, vendor, and current availability, users can refer to the provided weblink.