66-075 50 mm Dia. Hoya L-37 Longpass Color Glass Filter 370nm

The 66-075 50 mm Dia. Hoya L-37 Longpass Color Glass Filter is a high-quality optical component designed for use in a variety of applications. Sourced from the renowned optical vendor Edmund Optics, this filter boasts a 50 mm diameter and a thickness of 2.5 mm, making it suitable for use in systems that require precise optical alignment and stability.

This filter is a Longpass type, which means it allows light of longer wavelengths to pass through while blocking or attenuating light of shorter wavelengths. The specific cut-on wavelength for this filter is 370nm, making it ideal for use in applications where ultraviolet (UV) light needs to be filtered out. The cut-off wavelength is 0, indicating that it allows all wavelengths longer than 370nm to pass through.

The filter is made from UVFS Mal-1965, a material known for its excellent optical properties and durability. It features a Thin Lens shape, which helps to minimize optical aberrations and distortions, ensuring that the light passing through the filter remains accurately focused.

The front and back surfaces of the filter are coated with EDM 66-038, a coating that enhances the filter's performance and durability. This coating helps to reduce surface reflections, improving the overall transmission of light through the filter. It also provides protection against environmental factors, such as dust and moisture, helping to ensure the longevity of the filter.