64-693 50 mm Dia. Traditional Coated OD 2.0 Longpass Filter; t=5mm 975nm

The 64-693 is a Longpass Filter, sourced from Edmund Optics, with a diameter of 50 mm and a thickness of 5 mm. This filter is designed for use in optical systems where the primary requirement is to transmit light with wavelengths longer than a specified value, while blocking shorter wavelengths.

The 64-693 filter features a cut-on wavelength of 975 nm, meaning it begins to transmit light at this wavelength and beyond. The cut-off wavelength, which is the point at which the filter starts to block light, is 0 nm for this particular model. This means it allows all wavelengths of light to pass through, making it a suitable choice for applications where a wide range of wavelengths need to be transmitted.

The filter is made from UVFS Mal-1965 material, a common choice for optical filters due to its excellent optical properties. It is coated on both the front and back surfaces with EDM 64-679, a coating type known for its durability and performance.

The filter's geometry is defined by its Thin Lens shape, which is often used in optical systems to minimize aberrations and improve image quality. This filter is in stock and available for immediate purchase through the provided weblink.