FND-15C02-0.1 15 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

OptoSigma's FND-15C02-0.1 is a high-quality Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This unmounted filter boasts a circular shape with a 15mm diameter, making it suitable for a wide range of optical applications.

The filter is constructed from N-BK7 Schott, a renowned optical glass known for its excellent optical properties. This material ensures high light transmission and low dispersion, making it an ideal choice for precision optical systems. The filter's thickness is 2mm, providing robustness and stability while maintaining minimal optical distortion.

The FND-15C02-0.1 features a reflective neutral density coating on both the front and back surfaces, denoted as 'opt fnd-0-1'. This coating is designed to reduce the intensity of light passing through the filter without altering its color balance. The '0.1' denotes the filter's optical density, which corresponds to a reduction of approximately 10% in light intensity.

The filter's geometry is defined by its thin lens shape, which minimizes optical aberrations and ensures accurate light transmission. This, combined with its robust construction and high-quality coating, makes the FND-15C02-0.1 an excellent choice for various optical applications requiring neutral density filtration in the visible light spectrum.