48-527 12.5 mm Dia. Hoya ND-25 Absorptive Neutral Density (OD 0.6) Color Filter

The 48-527 is a 12.5 mm diameter Circular Color Glass Filter, specifically designed for absorptive neutral density applications. This filter, manufactured by Hoya, boasts a 2.5 mm thickness and is optimized for the visible light spectrum, covering wavelengths from 400 to 700 nm.

The filter's primary function is to reduce the intensity of incoming light without altering its color balance. This is achieved through the use of an absorptive coating, which has an Optical Density (OD) of 0.6. This OD value corresponds to a transmission factor of 25%, meaning that the filter allows 25% of the incident light to pass through while absorbing the remaining 75%.

The 48-527 filter features identical coatings on both the front and back surfaces, denoted as 'edm 48-527'. This symmetrical coating design ensures consistent performance, irrespective of the direction of light incidence. The filter's geometry, characterized by a diameter of 12.5 mm and a thickness of 2.5 mm, is designed to conform to the specifications of a Thin Lens.

This filter is available for purchase from Edmund Optics, and the provided weblink indicates that it is currently in stock. For more detailed information, users are encouraged to visit the vendor's website using the provided weblink.