ND2R13B Dia. 50 mm Unmounted Reflective ND Filter; Optical Density 1.3

The ND2R13B is a circular Neutral Density Filter with a diameter of 50 mm and a thickness of 2 mm, sourced from the reputable vendor Thorlabs. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an essential tool for various optical applications.

The filter's primary feature is its optical density of 1.3, which corresponds to a reduction factor of 4.18 in light intensity. This makes it suitable for managing high light levels, enabling precise control over exposure settings and preventing potential damage to sensitive optical components.

The ND2R13B filter boasts a coating of 'tho nd13' on both the front and back surfaces, enhancing its light reduction capabilities and ensuring consistent performance across a wide range of wavelengths. This coating also provides scratch resistance, contributing to the filter's durability and longevity.

The filter's geometry is shaped as a thin lens, optimized for minimal distortion and optimal light transmission. This, coupled with its unmounted design, allows for easy integration into existing optical systems or custom setups.

For more information, including pricing and availability, please refer to the provided weblink, which is currently valid and indicates the product is in stock.