47-265 12.5 mm Dia. N-BK7 45 deg Reflective Green Dichroic Filter; t=3 mm 520-800nm

The 47-265 is a 12.5 mm diameter Dichroic Filter with a 45 degree angle of incidence, designed for use within the 520-800nm wavelength range. This filter is sourced from the reputable optical vendor, Edmund Optics, and is available for purchase directly from their website.

The filter is constructed from N-BK7, a high-quality borosilicate glass manufactured by Schott AG, known for its excellent optical properties and durability. The filter's geometry includes a diameter of 12.5 mm and a thickness of 3 mm, making it suitable for a wide range of optical applications.

The dichroic coating on both the front and back surfaces of the filter is specifically designed to reflect the green portion of the spectrum at 535nm, while transmitting the remaining wavelengths. This coating is identified as 'edm 47-265' in the item data, and it is applied uniformly across the entire surface of the filter to ensure consistent performance.

The filter's shape is defined as a 'Thin Lens', indicating that it is designed to focus or disperse light, much like a traditional lens. However, the primary function of this filter is to selectively reflect and transmit light based on its wavelength, making it an essential component in many optical systems.