13-092 12.5 mm Dia. Hoya ND-0.3 Absorptive Neutral Density Filter; OD 3 425-675nm

The 13-092 is a 12.5 mm diameter Neutral Density Filter, sourced from the reputable optical vendor, Edmund Optics. This filter is specifically designed for use within the visible light spectrum, between 425-675nm, making it an ideal choice for applications that require light absorption and neutral density.

The filter boasts a base shape of a circle, a standard in optical systems due to its uniformity and ease of integration. It is constructed from UVFS Mal-1965 material, a common choice for its optical properties and durability. The filter's thickness is 3mm, providing a robust and stable platform for optical applications.

The 13-092 filter features absorptive coatings on both the front and back surfaces, identified as 'edm 13-092'. These coatings are designed to absorb light evenly across the spectrum, maintaining neutrality and preventing color casts. This is particularly important in applications such as photography, cinematography, and scientific research where color accuracy is paramount.

The filter's geometry is that of a thin lens, a design that minimizes optical aberrations and distortions. This is particularly beneficial in high-precision applications where image quality is critical.