64-509 12.5 mm Dia. SCHOTT N-WG280 Longpass Color Glass Filter 285nm

The 64-509 12.5 mm Dia. SCHOTT N-WG280 Longpass Color Glass Filter is a specialized optical component designed for applications requiring precise wavelength control. Sourced from Edmund Optics, this filter is a part of their extensive catalog, boasting a 12.5 mm diameter and a thickness of 3 mm.

The filter is a Longpass type, characterized by its ability to transmit wavelengths above a specified cut-on value while blocking those below. In this case, the cut-on wavelength is 285nm, making it ideal for applications where longer wavelengths need to be isolated or emphasized. The physical data indicates a cut-on wavelength of 285nm and a cut-off wavelength of 0nm, further emphasizing its Longpass properties.

The filter is made of SCHOTT N-WG280 material, a type of color glass known for its excellent optical properties. The material ID is listed as UVFS MAL-1965, providing a unique identifier for this specific type of glass.

The filter's coating is another crucial aspect, enhancing its performance and durability. Both the front and back surfaces of the filter are coated with EDM 64-509, a coating specifically designed for this filter. This coating aids in the filter's performance and longevity, ensuring it maintains its optical properties over time.

The filter's shape is described as a Thin Lens, indicating its optical properties are not solely determined by its surface but also by its internal structure. This shape adds another layer of complexity and functionality to the filter.