13-171 25 mm Dia. Hoya ND-13 Absorptive Neutral Density Filter; OD 0.9 600-1050nm

The 13-171 25 mm Dia. Hoya ND-13 Absorptive Neutral Density Filter is a high-quality optical component designed for a wide range of applications. Sourced from the renowned vendor Edmund Optics, this filter is part of their extensive catalog of optical elements.

This filter is specifically designed as a Neutral Density Filter, which means it reduces the intensity of all wavelengths of light equally, providing a uniform attenuation without altering the color balance. The ND-13 designation indicates an Optical Density (OD) of 0.9, which corresponds to a transmission of 37%. This makes it ideal for applications where a significant reduction in light intensity is required without altering the color composition.

The filter features a circular shape with a diameter of 25 mm and a thickness of 2.5 mm, making it compatible with a wide range of optical systems. The material ID for this filter is UVFS MAL-1965, although the specific composition of the material is not provided in the item data.

The filter is coated on both the front and back surfaces with EDM 13-154, a coating type not specified in the item data. However, it can be inferred that this coating is designed to enhance the performance and durability of the filter.

The geometry of the filter is described as a Thin Lens, suggesting that it is designed to minimize optical aberrations and distortions. This is particularly important in applications where high-precision optical performance is required.

The filter is designed to operate at a wavelength of 588 nm, although its performance may vary depending on the specific wavelength of the light it is exposed to. The item data does not provide information on the filter's transmission curve or its performance at other wavelengths.