39-377 50 mm Dia. Hard Coated OD 4.0 5nm Bandpass Filter; t=3.5 mm 515nm

The 39-377 is a Bandpass Filter with a diameter of 50 mm, sourced from the reputable optical vendor, Edmund Optics. This filter is specifically designed for use with a central wavelength (CWL) of 515 nm, making it ideal for applications that require precise wavelength selection within this range.

The filter is constructed with a hard coating on both the front and back surfaces, denoted as 'edm 39-331'. This coating enhances the filter's durability, making it resistant to wear and tear, a crucial factor for components subjected to frequent handling or harsh environments.

The geometry of the filter includes a diameter of 50 mm and a thickness of 3.5 mm. This thickness is often referred to as 't' in optical specifications. The filter's base shape is circular, a common form factor for optical elements due to its ease of integration into various systems.

The physical data of the filter specifies the cut-on wavelength as 512.5 nm and the cut-off wavelength as 517.5 nm. This narrow bandwidth of 5 nm ensures high spectral purity, a critical factor in many optical applications.

The filter's coating is designed to reflect or transmit light within a specific wavelength range while blocking other wavelengths. This makes it an essential component in many optical systems, including spectroscopy, fluorescence microscopy, and laser applications.