NENIR502B Dia. 0.5 in NIR Absorptive ND Filter; OD 0.2

The NENIR502B is a Neutral Density (ND) Filter, specifically designed for use in the Near-Infrared (NIR) spectrum with a wavelength of 1550nm. This filter is manufactured by Thorlabs, a leading vendor in the optical components industry, and is available for purchase through their website. The catalog number for this product is NENIR502B.

This ND filter is circular in shape, with a diameter of 12.7mm and a thickness of 1.2mm, making it compatible with a wide range of optical systems. The filter is constructed from UVFS material, identified by the Mal-1965 material ID. This material is known for its excellent optical properties in the NIR spectrum.

The NENIR502B filter features a front and back coating of tho nenir02b. This coating is specifically designed to provide a high level of absorption in the NIR spectrum, resulting in a reduction of optical density (OD) by 0.2. This makes the filter ideal for applications where light intensity needs to be reduced without significantly altering the color balance of the light.

The filter's shape is described as thin lens, indicating that it has been designed to minimize optical aberrations and distortions. This is particularly important in high-precision optical systems where even minor distortions can significantly impact performance.