14NDF-3-3 50.8 x 50.8 mm Unmounted Absorptive Neutral Density Filter; OD 1.5 400-700nm

This is a 14NDF-3-3 Neutral Density Filter, offered by Standa, a renowned vendor in the field of optical elements. The filter is unmounted, rectangular in shape, and has a base size of 50.8 x 50.8 mm, making it suitable for a wide range of optical applications.

The filter is designed with an Absorptive Neutral Density type, which is characterized by its ability to reduce the intensity of light without altering its color composition. This is particularly useful in situations where excessive light might cause issues such as overexposure or lens flare.

The filter's coating is another notable feature. Both the front and back surfaces are coated with Sta 14ndf-1.5, a coating that enhances the filter's performance and durability. This coating helps to maintain the filter's optical quality and ensures a consistent performance across the spectral range of 400-700nm.

The filter has a thickness of 3mm, which contributes to its structural integrity and overall robustness. This thickness also aids in minimizing optical distortions, ensuring that the light passing through the filter remains as close to its original state as possible.

In terms of geometry, the filter's width is 50.8mm, and its height is also 50.8mm. This size is often used in various optical systems due to its versatility and compatibility with many optical components.