640DF10 6.35 mm Dia. Protected Coating; Bandpass Filter Protected Coating

The 640DF10 is a Bandpass Filter, a type of optical element that allows light within a specific wavelength range to pass through while blocking other wavelengths. This particular filter, sourced from Omega Optical, has a catalog number of 640DF10 and is available for purchase on their website.

The filter is circular in shape with a diameter of 6.35 mm and a thickness of 4.3 mm, making it suitable for various optical applications. It is designed with a Base Shape of UVFS MAL-1965, a material ID that provides specific optical properties.

The 640DF10 filter's primary function is to allow light with a central wavelength (CWL) of 640 nm to pass through. It is cut on at 635 nm and cut off at 645 nm, ensuring a narrow band of wavelengths can pass through. This precise wavelength selection is crucial in many optical systems, such as spectroscopy, fluorescence microscopy, and laser technology.

The filter's coating is another critical feature. Both the front and back of the filter are coated with OME 640DF10, a protected coating that enhances the filter's performance and durability. This coating helps to protect the filter from environmental factors and ensures optimal light transmission.

The filter's shape is described as a Thin Lens, indicating its potential use in focusing or diverging light paths. This feature adds to the filter's versatility, making it a valuable component in various optical systems.