NE202B 2 in x 2 in Absorptive ND Filter; Optical Density 0.2

The NE202B is a Neutral Density (ND) Filter, measuring 2 in x 2 in, sourced from the renowned optical component manufacturer, Thorlabs. This filter is designed with a rectangular base shape and constructed from the high-quality material, n-BK7 Schott. The ND filter is a crucial component in optical systems, used to reduce the intensity of light without altering its color composition, thus enabling precise control over the exposure levels in various applications.

The NE202B filter boasts an optical density of 0.2, which corresponds to a transmission factor of approximately 63.1%. This specific optical density is suitable for applications requiring a subtle reduction in light intensity. The filter's geometry includes a width of 50.8 mm, a height of 50.8 mm, and a thickness of 1.4 mm, ensuring a compact and robust design.

The NE202B filter features a Tho NE02A coating on both its front and back surfaces. This coating enhances the filter's performance by minimizing reflection and optimizing transmission, thereby reducing light loss and improving overall system efficiency. The filter's shape is classified as a Thin Lens, which indicates its capability to focus light and minimize optical aberrations.