NE2R05B Dia. 2 in Absorptive ND Filter; Optical Density 0.5

The NE2R05B is a Neutral Density Filter, designed and manufactured by Thorlabs, a leading vendor in the optical industry. This filter is characterized by its circular shape, with a diameter of 50.8 millimeters and a thickness of 0.9 millimeters, making it compatible with a wide range of optical systems.

The filter's primary function is to reduce the intensity of incident light without altering its color composition. This is achieved through the use of absorptive coatings, specifically the tho ne05a coating, which is applied to both the front and back surfaces of the filter. This coating provides an optical density of 0.5 at a wavelength of 633 nanometers, ensuring consistent and reliable light reduction.

The NE2R05B filter is made from n-bk7 schott, a high-quality optical glass known for its excellent transmittance and low auto-fluorescence. The filter's geometry is designed in the shape of a thin lens, which not only contributes to its lightweight nature but also minimizes optical aberrations.

The filter's current status is in stock, and it is available for purchase through the vendor's official website. For more detailed information, users are encouraged to visit the provided weblink.