The FSQ-OD15 is a Neutral Density Filter from the renowned vendor MKS/Newport. This filter, with a catalog number FSQ-OD15, is available for purchase directly from their website, and it is currently in stock.
The filter is rectangular in shape, with a base shape that measures 50.8 x 50.8 mm. It has a thickness of 3 mm, making it a slim and compact option for your optical setup. The filter is made from UVFS Mal-1965, a material known for its optical properties.
The FSQ-OD15 features a New OD15 coating on both the front and back surfaces. This coating is designed to provide a consistent and uniform attenuation across the entire spectral range of 400-900nm. This makes it an ideal choice for applications that require a broad range of wavelengths to be filtered.
The filter's shape is classified as a Thin Lens, indicating that it has been designed to minimize optical aberrations and distortions. This is particularly beneficial in high-precision applications where optical quality is paramount.