The 53-705 Kodak Wratten 2 Neutral Density Color Filter is a rectangular, color glass filter with a size of 76.2 x 76.2 mm and a thickness of 0.1 mm. This filter is sourced from Edmund Optics and is available for purchase on their website, where it is currently in stock.
The filter is designed for use in the 400-700nm wavelength range, with an optical density (OD) of 1. The OD value indicates the degree of light reduction provided by the filter; in this case, a value of 1 means that the filter reduces light transmission by a factor of 10.
The filter's coating is another key feature. Both the front and back surfaces of the filter are coated with the EDM 53-705 coating, which is specifically designed for this type of filter. This coating helps to ensure optimal performance and longevity.
The filter's geometry is that of a thin lens, which is a type of lens that is characterized by a short focal length and a small thickness relative to its diameter. This makes the filter well-suited for use in a variety of optical systems.